MEMORANDUM. 
 
 This electrical handbook is one of a series 
 of ten similar handbooks prepared under the aus- 
 pices of the American Institute of Electrical 
 Engineers by the local Reception Committees in the 
 Cities of Boston, New York, Schenectady, Montreal, 
 Niagara Falls, Chicago, St. Louis, Pittsburg, Wash- 
 ington,, and Philadelphia. These are the stopping 
 places on tne circular to or o/^anized by the Institute 
 lor the reception and entertainment of its foreign guests 
 who visit the United States in connection with the 
 International Electrical Congress at St. Louis, Septem- 
 ber 12th to 17th, 1904. It is hoped in these hand- 
 books to present short historical sketches of the cities 
 visited and a rapid survey of the power plants and 
 important electrical industries along the route. 
 
 St. Louis. No. VV/V
 
 LOCAL RECEPTION GOMMIHEE 
 
 BOSTON MASS.
 
 THE ST. LOUIS 
 ELECTRICAL HANDBOOK
 
 THE ST. LOUIS 
 
 ELECTRICAL 
 HANDBOOK 
 
 Being a Guide for Visitors from Abroad 
 Attending the International Electri- 
 cal Congress, St. Louis, Mo. 
 September, 1904 
 
 Published under the auspices of 
 
 ^ The American Institute of 
 Electrical Engineers 
 1904
 
 Copyright 1904 by the 
 
 American Institute of Electrical Engineers 
 
 95 Liberty Street, Xew York 
 
 The Mason Press 
 Syracuse, New York
 
 CONIENTS 
 
 PAGE 
 
 The City of St. Louis 3 
 
 International Electrical Congress 17 
 
 St. Louis Exposition 43 
 
 Historical 45 
 
 The Grounds 50 
 
 Interesting Facts about the Exposition ... 57 
 
 Features of the Exposition 59 
 
 The Cascades 65 
 
 Illumination of the Exposition 70 
 
 Transportation within the Grounds .... 75 
 Intercommunication on the Grounds ... 81 
 
 Power of the Exposition 87 
 
 Power for Intramural Railway 89 
 
 Lighting and Power -92 
 
 Steam. Gas and Fuels Building 95 
 
 Arrangement of Electrical Exhibits in the Pal- 
 ace of Electricity 100 
 
 Special Exhibit .... 107 
 
 New Applications of Electric Motors Ex- 
 hibited 117 
 
 Foreign Electrical Exhibit - . 122 
 
 Argentine — Belgium 122 
 
 Brazil — Canada — Denmark — France . 123 
 
 Germany 129 
 
 Great Britain 131 
 
 Italy— Japan 133 
 
 Mexico — Portugal 135 
 
 Electric Railways 137 
 
 St. Louis Transit Company 139 
 
 The St. Louis and Sujjurban Railway 151 
 
 East St. Louis and Suburban Railway . . .155 
 
 Electric Lighting and Power Stations .... 163 
 
 The Union Electric Light and Power Company i6g
 
 via Contents 
 
 pac;e 
 
 The Ashley Street Plant 171 
 
 The Imperial Plant 194 
 
 Missouri Edison Station ""A" .... 201 
 Missouri Edison Station "'B'" . . . . 205 
 Present Distribution S\'stems .... 208 
 General Plan of Future Distribution . . 213 
 Direct-Current Series Arc Street Light- 
 ing 215 
 
 The Construction of Subways .... 218 
 Construction of Service Connections . 219 
 The Electric Plant of the Laclede Power 
 
 Company of St. Louis 227 
 
 The Electric Plant of the Laclede Gas 
 
 Light Compan}' 229 
 
 The Telephone in St. Louis 231 
 
 The Bell Telephone Company of Missouri . . 235 
 The Kinloch Telephone Company .... 247 
 
 Isolated Electrical Plants 253 
 
 Washington University 255 
 
 The Anheuser-Busch Brewery 260 
 
 The New Carleton Wholesale Building . . . 263 
 
 Electrical Manufacturing Plants . 267 
 
 The Wagner Electric Manufacturing Com- 
 pany 269 
 
 The Emerson Electric Manufacturing Com- 
 pany 275 
 
 The Moloney Electric Company 277 
 
 The Columbia Incandescent Lamp Company . 280 
 The U. S. Incandescent Lamp Company . . 284
 
 THE CITY OF ST. LOUIS
 
 77?^ City of St. Louis 
 
 ST. LOUIS is the fourth city of the United States in 
 population and manufactures, ranking after New 
 York, Chicago, and Philadelphia. Its estimated 
 population at the present time, based on the gov- 
 ernment census returns since 1840, is in the neighborhood 
 of 650,000. The city, by reason of its geographical loca- 
 tion, is the natural metropolis of the immense territory 
 of the Southwest, and its industrial development has gone 
 hand in hand with that of this important part of the coun- 
 try. The rapidly increasing settlement of this section, 
 due in part to the reclaiming of heretofore arid lands by 
 irrigation under government supervision, will, undoubt- 
 edly, act still further to mark the city as the Gateway of 
 the Southwest. 
 
 St. Louis is situated on the west bank of the Missis- 
 sippi River, about twenty miles below the mouth of the 
 Missouri River. It was founded on February 15, 1764, 
 by Pierre Ligueste Laclede as an Indian trading-post, 
 and was named in honor of Louis IX. of France. In the 
 following year the town was made the capital of Upper 
 Louisiana, under the governorship of Saii)t-Ange de 
 Rellerive, although the territory in which it was situated 
 had been ceded to Spain by the treaty concluded in Paris 
 in 1763. It remained under French control until No- 
 vember 2g. 1770, when the Spaniards, represented by Don 
 Pedro Pierras, took possession. In 1800, however, the 
 French again took possession, and retained it until shortly 
 after the consummation of the Louisiana Purchase under 
 President Jefferson. The formal transfer of the terri- 
 tory of Upper Louisiana took place in St. Louis on March 
 9, 1804. On November 9, 1809, the town was incorpo- 
 rated. 
 
 3
 
 The St. Louis
 
 Electrical Handbook 5 
 
 Since that time the development of the city has been 
 similar to that of other typically American municipalities. 
 For many years St. Louis was the headquarters of the 
 great fur trade of the Northwest, and was the starting 
 point of many of the exploring parties which were in- 
 strumental in opening up the vast territory west of the 
 Mississippi, notably the Lewis and Clark expedition and 
 that of Fremont. A city charter was granted in 1822. 
 ^lissouri having been admitted to the Union in 1820, after 
 much stormy congressional legislation due to the slavery 
 question. In 1848 the city was visited by a terrible epi- 
 demic of cholera, and m 1849 fire destroyed nearly the 
 whole of the business district and the public buildings, 
 embraced in the district between the river and what is 
 now Fourth street At the outbreak of the Civil War the 
 city was in. a turbulent condition, the sympathies of its 
 citizens being about equally divided between the North 
 and South, due to its position midway between the two 
 ^fictions; but the prompt action of Generals Nathaniel 
 Lyon and Frank P. Blair saved the city for the Union. 
 It was constantly occupied by troops and was a base of 
 supplies for the Federal army. The Western Sanitary 
 Commission had its headquarters here and a large mili- 
 tary hospital was also maintained. In 1875 the city was 
 separated from the county of St. Louis, the two now 
 having entirely independent governments. 
 
 At the present writing, the city covers an area of ap- 
 proximately sixty-two square miles, with a river front of 
 nineteen miles. In general plan it resembles a double 
 convex meni.scus, with the longer axis running north and 
 south, its eastern boundary being formed by a wide sweep 
 of the river. The principal business district occupies the 
 central eastern part of the city, the river front being given 
 up to factories, warehouses and railroad yards. The de- 
 pression of the Mill Creek Valley, running east and west 
 near the median line of the city, is used by the railroads 
 running to the south and southwest. The fine residence 
 district, for which St. Louis is particularly noted, is in 
 the western part of the city ; the great number and im- 
 posing appearance of the fine residences, the majority of
 
 6 T h c St. L o 11 i s 
 
 which are set in spacious grouncis, makes this section one 
 of which the citizens may well be proud. 
 
 There are 2^ public parks in the city, with an aggre- 
 gate area of 2,183 acres. Forest Park, part of which is 
 now occupied bj- the Louisiana Purchase Exposition, is 
 the largest, with an area of 1,374 acres, and with the ex- 
 ception of Fairmount Park in Philadelphia, is the largest 
 city park in the United States. Tower Grove Park and 
 the Missouri Botanical Garden, in the southwestern part 
 
 The Court House 
 
 of the city, were both presented to the city by the late Mr. 
 Henry Shaw. The ^Missouri Botanical Garden, famil- 
 iarly known as Shaw's Garden, is recognized as the finest 
 botanical garden in the country. 
 
 There is at present no system of boulevards connect- 
 ing the various parks, but tentative plans for that pur- 
 pose have been prepared by the Kingshighway Boulevard 
 Commission; the principal object of this commission is 
 to map out a scheme for the improvement of Kingshigh- 
 way and its extension in both directions to the river. 
 
 St. Louis has long been noted for the excellence of its 
 public school system, which includes three high schools
 
 Electrical Handbook 
 
 / 
 
 and 92 grade schools. I'he architectural beauty and the 
 hj'gienic appointments of all the more recent buildings 
 are worth}- of special mention. Higher education is pro- 
 vided bj' a number of institutions, of which Washington 
 University is the most important; a more detailed de- 
 scription of this University, which offers instruction in 
 all branches of learning except theology, will be found in 
 another part of this volume. Other institutions are : St. 
 Louis University (Roman Catholic, opened 1829) ; the 
 College of the Christian Brothers (Roman Catholic, 
 
 Residence Section — Portland PI.tcc 
 
 1849) ; Concordia Theological Seminary (Lutheran, 
 1839) ; Theological Seminary of the German Evangelical 
 Synod of North America (1850) ; the St. Louis College 
 (jf Physicians and Surgeons (1879) ; Homeopathic Med- 
 ical College of Missouri ; St. Louis College of Pharmacy, 
 and the St. Louis Training School for Nurses. There 
 are many scientific and technical organizations which 
 contribute to the advancement of learning and culture, of 
 which the St. Louis Academy of Science is widely known 
 for its valuable Transactions. 
 
 Before the advent of the railway, St. Louis was fa- 
 mous for its river traffic. The peculiar conditions en-
 
 8 T h c S t . L II i s 
 
 countered in navigating the Mississippi and Missouri 
 Rivers, due to a shallow and shifting channel obstructed 
 by sand-bars, brought about the evolution of a type of 
 steamboat altogether unique; and even to-day, when the 
 increased railway facilities have caused the river trade 
 to shrink to a comparatively small volume, the Missis- 
 sippi boats are objects of the greatest interest to stran- 
 gers. It now appears probable that river traffic will again 
 assume an important place in the development of the city, 
 due to the government plans for the construction and 
 maintenance of a deep-water channel from the Great 
 
 ^ 
 
 
 
 L'liiun >;,,tii III 
 
 Lakes to the Gulf of Mexico, via the Chicago Drainage 
 Canal and the Illinois River. At the present time, how- 
 ever, the commerce of the city is mainly handled by the 
 railroads. As a railroad centre St. Louis has a com- 
 manding position, twenty-four trunk lines terminating 
 here. All of them enter the Union Station, which is one 
 of the finest, and certainly the largest, railroad station 
 now in use in the United States. This station, and the 
 extensive terminal facilities connected with it, are con- 
 trolled by the Terminal Railroad Association of St. Louis. 
 This association controls the operation of the Eads and 
 Merchants' bridges over the Mississippi River, the for- 
 mer famous as the first steel arch bridge in the world. 
 It was designed and built by Captain James B. Eads, and 
 was finished in 1874 at a cost of $6,500,000. It is remark-
 
 Electrical Handbook p 
 
 able for the great number of difficult engineering prob- 
 lems met and solved for the first time by Captain Eads 
 and his associates. It was in the construction of this 
 bridge that pneumatic caissons for sinking foundations 
 to bed-rock were first used. 
 
 Local transportation facilities are furnished by two 
 independent systems of electric railways, both of which 
 operate surface lines only. They are the St. Louis Tran- 
 sit Company and the St. Louis and Suburban Railway 
 Company, detailed descriptions of which will be found 
 under another heading. It may be said here, however, 
 that since the installation of the additional equipment 
 ordered by these companies for handling the Exposition 
 traffic the service has aroused universally favorable com- 
 ment on account of its high efficiency. 
 
 ^lunicipal improvements are under the general super- 
 vision of the Board of Public Improvements, whose mem- 
 bers, appointed by the mayor, are the heads of the va- 
 rious branches of the public works, such as the water, 
 street, sewer, park, and harbor departments. 
 
 The city water supply is drawn from the Mississippi 
 river through an intake tower at the Chain of Rocks, 
 about eleven miles north of the Eads bridge, and is 
 pumped to a series of six settling basins, with a total 
 capacity of 170,000,000 gallons, by six compound, con- 
 densing, low-service engines with a combined capacity of 
 160,000,000 gallons per 24 hours. The basins are oper- 
 ated on the weir system of continuous sedimentation, 
 using sulphate of iron as a coagulant. The water is de- 
 livered through an ii-ft. masonry conduit, 3^ miles 
 long, to the Baden high-service station, whose engines 
 have a capacity of 80,000.000 gallons per 24 hours, thence 
 through a g-ft. conduit to the Bissell's Point high-service 
 station, which has a capacity of 110,000,000 gallons per 
 24 hours. The Baden station delivers water directly to 
 the mains at a pressure of 125 pounds, an overflow tower 
 being located at the Compton Hill reservoir; the latter is 
 in the southern part of the city and has a capacity of 
 60,000,000 gallons. The Bissell's Point station pumps to 
 two towers on a hill near by, and thence directly to the
 
 10 
 
 The St. Louis 
 
 mains. The distribution system consists of about 700 
 miles of pipe of various sizes, in connection with which 
 there are about 7,800 fire-phigs and 4,800 meters. 
 
 The city sewers of all sizes have a total length of 
 562.055 miles, whose total cost to date, including main- 
 tenance, has been $1,3,413,052.80. 
 
 The streets of the city aggregate 881 miles in length, 
 of which 468 miles are variously improved with macadam, 
 lelford. novaculite, asphalt, bituminous macadam, gran- 
 
 The Merchants JJridge 
 
 ite, vitrified brick, and wood blocks ; in addition, there 
 are 124 miles of paved alleys. During the past year 35.27 
 miles of streets and 5.33 miles of alleys were paved, and 
 it is probable that during the current year a still greater 
 mileage will be constructed. Improved streets are 
 sprinkled by contract, and maintenance is done partly by 
 contract and partly by the city itself. 
 
 Street and alley lighting is done by contract, electric- 
 ity, gas and naphtha being used as illuminants. The 
 total number of miles of streets lighted is 672. Arc 
 lighting is confined to the district east of Jefferson ave- 
 nue, where there are 1,000 arc lamps of the direct-current.
 
 Electrical Handbook 
 
 II 
 
 series, enclosed type, current being supplied from the 
 Tentli and St. Charles street plant of the Union Electric 
 Light and Power Company. The same company also 
 furnishes current for 8co 30 c-p. incandescent lamps. Gas 
 lighting is furnished for the residence districts by 14,000 
 mantle lamps at $6.81 per thousand hours. 250 Wehsbach 
 lam])s at $11 per thousand hours, and 1,400 gas lamps at 
 $37 P»-'i' lamp-year. Gas is furnished by the Laclede Gas 
 Light Company. In certain districts not piped for gas, 
 naphtha is used. 
 
 St. Louis being the metri)pi)lis of the .Mississippi Val- 
 ley, is deeply interested in all work concerned with the 
 improvement of the river and its tributaries. Here are 
 located the headquarters of the .Mississippi River Com- 
 mission, in charge of improvements from the mouth of 
 the Ohio River to the Head of Passes, near the Gulf of 
 Mexico, and of surveys, topographical, hydrographical and 
 hydrometrical, of the river from its head waters to the 
 Gulf. The United States Engineer Corps (of the .\rniy ) 
 has charge of all work between the head w^aters and the 
 mouth of the Ohio, and of the snag-boat service from St. 
 Louis to Xatchez. I'roni llii- mouth of the .Missouri to
 
 12 
 
 The St. Louis 
 
 that of the Ohio, the improvement consists of revetment 
 and contraction work, a low-water channel depth of eight 
 feet being maintained by hydraulic dredges. Examina- 
 tions, surveys, plans and estimates are now being made 
 by direction of Congress for a navigable waterway four- 
 teen feet deep from Lake Michigan via the Chicago 
 Drainage canal, the Illinois and Mississippi rivers to 
 St. Louis. This project is in charge of a board of army 
 engineers and the Mississippi River Commission. 
 
 Industrially, St. Louis has many claims to distinction. 
 Its proximity to the soft-coal fields of Illinois renders 
 fuel very cheap, thus making the city a natural manufac- 
 turing centre. It produces more smoking and plug to- 
 bacco than any other city in the world ; makes more 
 street and railway cars than any other city; is the world's 
 headquarters for the horse and mule trade, and has the 
 largest shoe factory. It has the largest drug house, 
 woodenware house, and hardware house in the United 
 States, is the greatest dry goods market west of the Alle- 
 ghenies, and leads in the manufacture of American-made
 
 Electrical Handbook ij 
 
 chemicals. One of its breweries has the largest output 
 in the country and is one of the most interesting sights 
 of the city. The Cupples station is the largest private 
 freight station in the world, and is a unique solution of 
 the problem of handling freight without the use of teams ; 
 in this station is the most extensive single system of ele- 
 vators in America ; the medium for transmission is a 
 special hydraulic oil of very high fire test, which retains 
 its fluidity at a temperature considerably below zero de- 
 grees fahr., and which is operated at a pressure of 750 
 pounds per square inch. 
 
 In conclusion, the places of special interest in the city, 
 aside from the Exposition, may be summarized as fol- 
 lows : The new grounds and buildings of Washington 
 University ; the central western residence district ; the 
 Missouri Botanical Garden, or Shaw's Garden ; the An- 
 heuser-Busch brewery; the Cupples station; the Eads 
 bridge, and the terminal plant of the Terminal Railroad 
 Association, in the immediate neighborhood of the Union 
 station.
 
 INTERNATIONAL ELECTRICAL 
 CONGRESS
 
 International Electrical Congress 
 
 Sei'tember 12-17, 1904 
 
 ELECTRICAL Congresses held in the past have 
 had an important influence for good on the 
 world's progress in the knowledge of electricity 
 and magnetism. It is confidently believed that 
 the International Electrical Congress of 1904, to be held 
 during the continuance of the Louisiana Purchase Expo- 
 sition at St. Louis, will yield results at least as valuable 
 as have any of the congresses preceding. 
 
 The last International Electrical Congress was held 
 in Paris in 1900, in connection with the Universal Expo- 
 sition. The one preceding that was held at Chicago in 
 1893 during the Columbian Exposition. The Interna- 
 tional Electrical Congress of 1904 is held under the aus- 
 pices and at the invitation of the Louisiana Purchase 
 Exposition. 
 
 It will comprise three distinct features : 
 
 1st. A Chamber of Delegates, appointed by the va- 
 rious governments, and essentially similar to the cham- 
 ber of government delegates at the International Elec- 
 trical Congresses of Chicago in 1893, and of Paris in 1900. 
 It would seem that sufficient material has been collected 
 since 1900, calling for international action, to warrant the 
 invitations extended to the various governments to ap- 
 point delegates, as they did to Chicago and Paris, to 
 attend the International Electrical Congress of St. Louis. 
 
 The delegates appointed up to August i, were as fol- 
 lows : Austro-Hungary, Prof. Charles Zipernovsky ; 
 Italy, Prof. Moise Ascoli, Prof. L. Lombardi, Ing. A. 
 IMaflfezzini ; Switzerland, Prof. Ferdinand Weber, Prof. 
 Francjois Louis Schule ; Norway and Sweden, Prof. G. 
 .Xrrhenius; Australian Colonics, John Hcsketh, Esq.; 
 Brazil. Scnor Jorge Ncwbcry ; India, J. C. Shields, Esq.; 
 
 17
 
 i8 
 
 The St. Louis
 
 Electrical Handbook iq 
 
 Mexico, Senor Rafael R. Arizpe ; United States, Prof. 
 H. S. Carhart, Dr. A. E. Kennelly, Prof. H. J. Ryan, 
 Prof. S. W. Stratton, Prof. Elihu Thomson. 
 
 jnd. The main body of the Congress, divided into 
 the following sections : 
 
 General Theory — Section A, Mathematical, Experi- 
 mental. 
 
 Applications — Section B, General Applications ; Sec- 
 tion C, Electrochemistry ; Section D, Electric Power 
 Transmission ; Section E, Electric Light and Distribu- 
 tion ; Section F, Electric Transportation; Section G, 
 Electric Communication; Section H, Electrotherapeu- 
 tics. 
 
 3rd. Conventions simultaneously held, in connection 
 with the Congress, by various electrical organizations in 
 the United States. It is proposed that each section of 
 the Congress may be able to hold its meeting under some 
 plan in conjunction with the organization or organiza- 
 tions devoted to the progress of the work selected by that 
 section. Steps were taken to enlist the support of the 
 various organizations, with a view to perfecting the de- 
 tails of co-operation in the work to be done. Prominent 
 among the organizations which will take part are : 
 
 The Institution of Electrical Engineers. Delegates — 
 Mr. R. Kaye Gray (pres.) ; Col. R. E. Crompton, C. B. ; 
 Prof. John Perry. F.R.S.; Dr. R. T. Glazebrook, F.R.S.; 
 Mr. H. E. Harrison, B. Sc, B. A.; Mr. W. Duddell. Hon. 
 Sec'y of Delegation. 
 
 La Societe Internationale des Electriciens. 
 
 Associazione Elettrotecnica Italiana. Delegates — 
 Prof. M. Ascoli (pres.) ; Prof. G. Grassi (vice-pres.) ; 
 Prof. L. Lombardi (vice-pres.) ; Ing. E. Jona 
 
 Oesterrichischcr Elcktrotechnischer Vercin. Dele- 
 gate — Dr. Heinrich Ritter von Kuh. 
 
 The Royal Society of Canada. Delegates — Prof. W. 
 Lash Miller, Prof. Howard T. Barnes. 
 
 The American Institute of Electrical luigincers, to 
 hold a simultaneous convention and joint sessions with 
 several sections. Delegates — Mr. Rali)h D. Mershon. 
 Prof. M. I. Pupin, Prof. C. P. Steinmctz.
 
 20 
 
 The St. L o II i .
 
 Electrical Handbook 21 
 
 The American Physical Society, to hold a simulta- 
 neous convention and joint session with Section A, 15th 
 September. Delegates — to be appointed. 
 
 The American Electrochemical Society, to hold a 
 simultaneous convention and joint sessions with Section 
 C, 13th and 15th September. Delegates — Prof. W. D. 
 Bancroft. Prof. H. S. Carhart (pres.). Dr. Louis Kahl- 
 enberg. 
 
 The National Electric Light x\ssociation. Delegates 
 — Mr. George Eastman, Mr. G. Ross Green, Dr. F. A. C. 
 Perrine. 
 
 The Association of Edison Illuminating Companies. 
 Delegates— :\Ir. W. C. L. Eglin, Mr. L. A. Ferguson, Mr. 
 Gerhard Goettling. 
 
 The International Association of ^Municipal Electri- 
 cians, to hold a simultaneous convention and joint meet- 
 ings with Section G. Delegates— ]\Ir. W. H. Bradt, Mr. 
 F. C. JNIason, Mr. Walter N. Petty. 
 
 The American Electro-Therapeutic Association, to 
 hold a simultaneous convention and joint meeting with 
 Section H, 15th September. Delegates — Dr. Russell 
 Herbert Boggs, Dr. Charles R. Dickson, Dr. James 
 Herdman. 
 
 The United States Navy Department has appointed 
 as Delegate to the Congress Lieutenant-Commander Jo- 
 seph L. Jayne. 
 
 The American Institute of Electrical Engineers ex- 
 tended an invitation to the Institution of Electrical En- 
 gineers of Great Britain to visit the L^nited States and to 
 hold a joint meeting in St. Louis in connection with the 
 International Electrical Congress. This invitation was 
 accepted by the Institution of Electrical Engineers, and a 
 large number of its members, many accompanied by 
 ladies, have signified their intention to be of the party. 
 
 The joint meeting of the British Institution and the 
 American Institute will be held on Wednesday, Septem- 
 ber 14. 
 
 The Department of State, at Washington, acting'upon 
 requests sent from the Congress Committee on Organiza- 
 tion and from tiic President of the .American Institute of
 
 22 
 
 The St. Louis
 
 Electrical II a n d book .? ? 
 
 Electrical Engineers, forwarded through the Department 
 of Commerce and Lahor and tlie Bureau of Standards, 
 instructed the diplomatic ofhcers of the United States 
 abroad to extend invitations to the various foreign gov- 
 ernments to appoint official delegates to the Congress. 
 These instructions were sent out on December 17, 1903. 
 The list of delegates invited was in accordance with the 
 lists of those allotted to the various countries at the Con- 
 gress in Chicago in 1893 and at the Congress in Paris in 
 1900. 
 
 The proceedings of the Chamljer of Delegates are to 
 be conducted in a manner essentially similar to the meet- 
 ings of the chambers of government delegates at the In- 
 ternational Congresses of 1893 and 1900. 
 
 The Connnittee of Organization of the Congress is as 
 follows : 
 
 President — Elihu 'i'homson. past-president of the 
 American Institute of Electrical Engineers. 
 
 J'iee-Prcsideuts — 'Sir. B. J. Arnold, president of the 
 American Institute of Electrical Engineers ; Prof. H. S. 
 Carhart, president of the American Electrochemical So- 
 ciety; Prof. W. E. Goldsborough, chief Department of 
 Electricity, Louisiana Purcha.se Exposition ; Mr. Charles 
 I*". Scott, past-president of the .American Institute of 
 Electrical Engineers ; Dr. S. W. Stratton, Director of the 
 National Bureau of Standards of the United States. 
 
 General Secretary — Dr. A. E. Kennelly, past-president 
 of the American Institute of Electrical Engineer,s. 
 
 Treasurer — Mr. W. D. Weaver, editor of the "Elec- 
 trical World and Engineer." 
 
 Advisory Committee — Mr. 15. .\. P>ehrend, Mr. C. S. 
 Bradley, Mr. J. J. Carty. Mr. .\. 11. Cowles, Dr. R B. 
 Crocker, past-president A. I. E. E. ; Dr. Louis Duncan, 
 past-president A. I. E. E. ; Mr. R. A. I^'essenden, Mr. W. 
 J. Hammer, Mr. Carl Hering, past-president A. I. E. E. ; 
 Dr. C. P. Matthews, Mr. K. B. Miller, Dr. W. J. Morton, 
 Dr. E. L. Nichols, Prof. R. B. Owens. Dr. 1'. A. C. Per- 
 rine, Dr. M. I. Pupin, ^Mr. H. L. Doherty. Prof. J. W. 
 Richards, past-president of the .American Electrochem- 
 ical Society; Prof. H. J. Ryan. Mr. William Stanley. Dr.
 
 24 
 
 The St. Louis
 
 Electrical Ha)idbook 
 
 ^D 
 
 C. P. Steinmetz, past-president A. I. E. E. ; Dr. L. B. 
 Stillwell, Air. Ralph D. Mershon, Mr. J. G. White, Mr. A. 
 J. Wurtz. 
 
 Invitations were extended to all persons who are in- 
 terested in electricity and its application to take part in 
 the Congress and to attend its meetings. 
 
 Nearly 2,000 acceptances were received up to August 
 I, ahout 1,400 subscriptions were in hand and about 1,300 
 membership certificates had been issued. 
 
 Special letters of invitation to the number of 350 were 
 issued on behalf of the Committee of Organization to 
 prominent electricians and electrical engineers, signed by 
 the president and general secretary of the committee, 
 requesting papers for the Congress in the various sec- 
 tions. Of these about an equal number each were sent 
 to foreign authors and to American authors. IMany ac- 
 ceptances have been received from both foreign and 
 American authors. A tentative limit of the number of 
 papers to be accepted was set by the committee at 150, but 
 a greater number than this were already promised early 
 in August. Of these, 103 papers were from Americans 
 and 63 from foreign authors. Sixty-four of these papers 
 were then in hand and were being printed in advance of 
 the meeting. 
 
 The proceedings of the Congress will be published in 
 several large volumes and a copy of each will be sent to 
 each member subscribing to the Congress More than 
 i,<Sco acceptances of membership had been received up to 
 the end of the first week in July. 
 
 Between September 12th and September 17th the 
 office of the secretary and of the treasurer will be at the 
 Coliseum, St. Louis, Mo. 
 
 The bureau oi information will be maintained in the 
 Coliseum during this time. 
 
 Delegates to the Congress of i()04 will arrive in St. 
 Louis from Chicago at noon on Sunday, September 11, 
 They will be received by Mr. W. V. N. Powelson. Mr. W. 
 A. Longman and the members of the St. Louis Reception 
 Committee. They will be taken to the newly-built Jef- 
 ferson Hotel, at Thirteenth street near Locust, where
 
 26 
 
 The St. Lou 
 
 rooms have been reserved and where most of the dele- 
 gates will stop, ihe Jefferson is one of the newest and 
 finest of St. Louis's hotels, and is situated only a block 
 from the Coliseum and Music Hall, where the meetings 
 of the sections will begin on the 12th. 
 
 On Sunday evening an informal reception will be held 
 at the Jefiferson Hotel, at which all the local engineers, 
 their wives, and the many engineers and others who are 
 visiting the World's Fair will be presented. 
 
 The .\ustrian Building 
 
 On Monday at 9.30 a. m. the opening ceremonies of 
 the Congress will be held in the Music Hall of the Coli- 
 seum, at Olive and Thirteenth streets. This will per- 
 haps be the last event of any note to take place in this 
 building, which has been the scene of many interesting 
 gatherings of national importance. The building is about 
 to be torn down to make room for a public library, the 
 foundation of which is a million dollar donation by Mr. 
 Andrew Carnegie. 
 
 It was in this building that the late Democratic Na- 
 tional Convention was held at which. Judge Alton B. 
 Parker was named as a candidate for election in Novem- 
 ber, 1904. to the Presidency of the United States, in oppo-
 
 Electrical Ha n d b o o k 2j 
 
 sition to President Theodore Roosevelt, the nominee of 
 the Republican party. 
 
 The building was erected for the St. Louis Exposition 
 of September. 1884. Ground was broken for it on Au- 
 gust 22, 1883. The building measures 438 feet in length 
 by 338 feet in width and it is 108 feet high. The Music 
 Hall is 2CX) feet long, 120 feet wide and 80 feet high. It 
 has a seating capacity of 4,000. During the recent Dem- 
 ocratic convention the Coliseum seated 12,400 persons. 
 
 After the opening ceremonies, the Congress will ad- 
 journ and the meetings of the eight sections will begin. 
 These meetings will be called to order at 11 a. m. They 
 will be held in the section rooms on the second floor of 
 the Coliseum. The meetings will adjourn at 1.30 p. m. 
 on IMonday, and on Tuesday, Thursday and Friday at i 
 p. m., so as to give time for the members to visit the Fair, 
 etc. 
 
 The eight sections, among which the work of the Con- 
 gress will be divided, and the officers of the sections are 
 as follows : 
 
 Section A — Subject: General Theory; Dr. E. L. 
 Nichols, Cornell University, chairman ; Prof. H. T. 
 Barnes, McGill University, secretary. 
 
 Section B — Subject: General Applications; Dr. C. P. 
 Steinmetz, Union College, chairman ; Dr. Samuel Shel- 
 don, Brooklyn, N. Y., secretary. 
 
 Section C — Subject: Electrochemistry; Prof. H. S. 
 Carhart, University of Michigan, chairman ; Mr. Carl 
 Hering, Philadelphia, Pa., secretary. 
 
 Section D — Subject : Electric Power Transmission ; 
 Mr. C. F. Scott, Pittsburg, Pa., chairman ; Dr. Louis Bell, 
 Boston, Mass., secretary. 
 
 Section E — Subject: Electric Light and Distribution; 
 Mr. J. W. Lieb. jr.. New York, chairman; Mr. Gano S. 
 Dunn, New York, secretary. 
 
 Section F — Subject: Electric Transportation; Dr. 
 Louis Duncan, Massachusetts Institute Technology, 
 chairman ; Mr. .\. H. .\rmstrong, Schenectady, X. Y.. 
 secretary. 
 
 Section G — Subject: Electric Conununication : Mr. F.
 
 28 The St. Louis 
 
 W. Jones, New York, chairman ; Mr. Bancroft Gherardi, 
 New York, secretary. 
 
 Section H — Subject: Electro-therapeutics; Dr. W. J. 
 Morton, New York, chairman ; Mr. W. J. Jenks, New 
 York, secretary. 
 
 The chairmen and secretaries (jf the various sections 
 are also honorary members of the Advisory Committee 
 of Organization. 
 
 The following are the preliminary programmes of the 
 different sections, giving the name of the author and the 
 title of his paper: 
 
 Scct!0)i A. — General Theory — Mathematical, Experi- 
 mental: Prof. Dr. Moise Ascoli, Systems of Electric 
 Units (A. E. L. paper) ; Prof. Dr. Paul Drude, Aletallic 
 Conduction from the Standpoint of Electronic Theory ; 
 Prof. Dr. W. Jaeger, Electrical Standards ; Prof. H. 
 Nagaoka, Magneto-Striction; Prof. J. S. Townsend, The 
 Theory of Ionization by Collision ; Prof. J. J. Thomson, 
 The Corpsucular Theory ; M. J. Violle, Secondary Stand- 
 ards of Light ; Prof. C. T. R. Wilson, F. R. S., Condensa- 
 tion Nuclei ; Prof. P. Zeeman, Recent Progress in Mag- 
 neto-Optics ; Dr. Carl Barus, Atmospheric Nuclei ; Prof. 
 Howard T. Barnes, The Mechanical Equivalent of Heat 
 as Determined b}- Electrical Means (Roy. Soc, Canada, 
 paper) ; Dr. L. A. Bauer, The State of Our Knowledge 
 Regarding the Earth's Magnetism and the Recent Re- 
 markable ^Magnetic Storms ; Prof. D. B. Brace, Magneto- 
 Optics ; Prof. H. S. Carhart and Prof. G. W. Patterson, 
 Jr., The Absolute Value of the Electromotive Force of 
 the Clark and Weston Cells ; Prof. C. D. Child, The Elec- 
 tric Arc ; Dr. K. E. Guthe, Coherer Action ; Dr. A. E. 
 Kennelly, The Alternating Current Theory of Transmis- 
 sion-Speed over Submarine Telegraph Cables ; Prof. E. 
 Percival Lewis, The Electrical Conductivity of Gases ; 
 Prof. E. Louis Alore, Electrostriction ; Prof. J. C. Mc- 
 Lennan, Radio-activity of Mineral Oils and Natural 
 Gases ; Prof. E. F. Nichols, The Unobtained- Wave- 
 Lengths between the Longest Thermal and the Shortest 
 Electric Waves yet Measured ; Prof. E. L. Nichols, 
 Standards of Light; Dr. H. Pender, The ^^lagnetic Effect
 
 Electrical Handbook 2<) 
 
 of Moving Charges; Prof. M. T. Pupin, Electrical Im- 
 pulses and Multiple Oscillators (A. I. E. E. paper) ; Dr. 
 E. B. Rosa and Mr. F. W. Grover, The Absolute ]\Ieas- 
 urement of Capacity and Inductance ; Prof. E. Ruther- 
 ford, Radioactive Change ; Prof. J. Trowbridge, Spectra 
 of Gases at High Temperatures ; Prof. A. G. Webster, 
 Report on Recent Developments in Electrical Theory ; 
 Prof. J. Zeleny, The Discharge from Points ; Dr. A. E. 
 Wolff, The So-called International Electric Units. 
 
 Section B. — General Al>l^lications: Prof. E. Arnold 
 and J. L. La Cour, The Commutation of D. C. and A. C. 
 Machines ; Dr. O. S. Bragstad, Theory and ^Method of 
 Operation of Repulsion Motors ; M. Andre Blondel, Cal- 
 culation and Tests of Alternators ; Col. R. E. Crompton, 
 Standardization of Dj^namo-Electric Machinery and Ap- 
 paratus; Profs. Drs. Elster and Geitel, Concerning Nat- 
 ural Radio-activity of the Atmosphere and the Earth; 
 Pterr Clarence Feldmann and Joseph Herzog, The Dis- 
 tribution of Voltage and Current in Closed Conducting 
 Networks ; M. Alexander Heyland, Recent Developments 
 in Compounded Alternators with Direct Excitation from 
 Alternating Currents; W. M. Mordey (title to be an- 
 nounced) ; M. A. Nodon, Rectifiers; Sir W. Preece, 
 Electricity in Ancient Egypt ; Prof. C. A. Adams, The 
 Leakage Reactance of Induction Motors ; Mr. C. Day, 
 Electric Motors in Shop Service ; ]\Ir. H. W. Fisher, 
 Sparking Distances Corresponding to Different Voltages ; 
 Prof. H. J. Ryan. The Design of Insulators;, Mr. D. B. 
 Rushmore, The Regulation of Alternators ; Prof. E. B. 
 Rosa. The Influence of Wave Shape upon Alternating- 
 Current Meter Indications; Dr. Clayton H. Sharp, The 
 Equipment of a Commercial Testing Laboratory; Prof. 
 H. B. Smith, Very High Voltage Transformers. 
 
 Section C. — Electrochemistry: Prof. Dr. S. Arrhe- 
 nius, Methods of Determining the Degree of Dissocia- 
 tion ; Geh. Reg. Prof. Dr. W. Borchers, Electrometal- 
 lurgy of Nickel; Sherard O. Cowper-Coles, Electrolytic 
 Methods for the Rapid Production of Copper Sheets and 
 Tubes; Dr. F. Dolezalck (subject to be announced) ; J. 
 Sigfried Edstrum, Electrical Extraction of Nitrogen from
 
 ?o The St. L o u is 
 
 the Air; Dr. H. Goldschmidt, Alumino-Thermics ; Prof. 
 Dr. F. Haber, Electrolytic Disturbances in the Earth ; Dr. 
 P. L. T. Herouh, Electrometalkirgy of Iron and Steel ; 
 Prof. Dr. Richard Lorenz, Electrolysis of Fused Salts; 
 Prof. Dr. W. Ostwald, Catalysis in Electrolysis; Mr. J. 
 Swinburne, Chlorine Smelting: Prof. W. D. Bancroft, 
 The Chemistry of Electroplating (A. E.-C. S. paper) ; 
 Mr. A. G. Betts and Dr. Edward F. Kern, The Lead 
 Voltameter; Prof. H. S. Carhart and Dr. C. A. Hulett, 
 The Preparation of Materials for Standard Cells and 
 their Construction (A. E.-C. S. paper) ; Thomas A. Edi- 
 son, Alkaline Batteries (by deputy) ; Dr. K. E. Guthe, 
 The Silver Voltameter; Mr. Carl Hering, The Units Em- 
 ployed in Electrochemistry ; Prof. L. Kahlenberg, The 
 Electrochemical Series of the Metals (A. E.-C. S. pa- 
 per) ; Prof. J. W. Richards, The Energy Absorbed in 
 Electrolysis ; Prof. T. W. Richards, The Relation of the 
 Theory of Compressible Atoms to Electrochemistry. 
 
 Section D. — Electric Pozcer Traiisinissioii : Sig. E. 
 Bignami, Electrical Transmission Plants in Switzerland; 
 H. M. Hobart, A Method of Designing Induction Mo- 
 tors ; Mons. Maurice Leblanc, Transmission of Alternat- 
 ing Currents over Lines Possessing Capacity ; Prof. G. 
 ^lengarini. Utilization of Hydraulic Powers in Italy; 
 Prof. F. G. Baum, High-Potential Long-Distance Trans- 
 mission and Control ; F. O. Blackwell, The Tower-Sys- 
 tem of Line Construction ; H. W. Buck, The Use of 
 Aluminum as an Electrical Conductor; V. G. Converse, 
 High-Tension Insulators ; M. H. Gerry, Jr., The Con- 
 .struction and Insulation of High Tension Transmission 
 Lines; J. F. Kelly and A. C. Bunker, Some Difficulties of 
 High Tension Transmission and Methods of ^^litigating 
 Them; L. M. Hancock. The Bay-Counties Transmission 
 System ; R. L. Hayward, Some Practical Experiences in 
 the Operation of Many Power Houses in Parallel ; P. M. 
 Lincoln, Transmission and Distribution Problems Pecul- 
 iar to the Single-Phase Railway System ; Ralph D. ^^ler- 
 shon, The Maximum Distance to which Power can be 
 Economically Transmitted (A. I. E. E. paper) ; P. N. 
 Nunn, Pioneer Work of the Telluride Power Company;
 
 /: I c c f r i c a I II a n d h o o h 5/ 
 
 J. S. Peck. The High Tension Transformer in Long-Dis- 
 tance Power Transmission ; Dr. F. A. C. Perrine, Amer- 
 ican Practice in High Tension Line Construction and 
 Operation (X. E. L. A. paper) ; Dr. C. P. Steinmetz, 
 Theory of the Single-Phase ]\Iotors (A. I. E. E. paper). 
 
 Section E. — Electric Light and Distribution: Prof. 
 Andre Blondel, Impregnated Arc-Light Carbons and 
 Lamps ; Herr Max Deri, Single-Phase ^Motors ; Herr E. 
 de Fodor, Rates for Electricity Supply ; Sig. Ing. E. Jona, 
 Insulating Materials in High-Tension Cables (A. E. I. 
 paper) ; Prof. W. Kubier, Upon a Means for Compensat- 
 ing the Series-Connection of Induction Motors; Prof. L. 
 Lombardi. Stroboscopic Observations of the Arc (A. E. 
 I. paper) ; H. F. Parshall, The Yorkshire and Lancashire 
 Electric Power Companies; Prof. Auguste Rateau, 
 Steam Turbines ; Herr Karl Roderbourg, The Prussian 
 System of Electric Train Lighting; Sig. Ing Guido Se- 
 nienza. Commercial Limits of Electric Transmission with 
 Special Reference to Lighting Service ; Dr. G. Stern, The 
 Applicability of the Alternating Current for Distribution 
 in Large Cities; Prof. S. P. Thompson (subject to be 
 announced) ; Dr. W. Wedding. ^leasurements of the 
 Energy of Light and Heat Radiation from Electric Light 
 Sources ; Arthur Wright. Recent Improvements in Elec- 
 trolytic Meters ; B. A. Behrend. The Testing of Alter- 
 nating-Current Generators ; Alexander Dow, The Con- 
 tinuous-Current Distributing Systems of American Cit- 
 ies ; George Eastman. Protection and Control pf Large 
 High-Tension Distribution Systems (N. E. L. A. paper) ; 
 W. C. L. Eglin. Rotary Converters and Motor Generators 
 in Connection with the Transformation of High-Tension 
 A. C. to Low-Tension Street Current (Assn. Ed. Illg. 
 Co.'s paper) ; W. L. R. Emmet, The Effect of Steam 
 Turbines on Central Station Practice ; Louis A. Fergu- 
 son, Underground Electrical Construction (Assn. Ed. 
 Illg. Co.'s paper) ; Gerhardt Goettling, Storage Batteries 
 (Assn. Ed. Illg. Co.'s paper) ; G. Ross Green. American 
 Meter Practice (N. E. L. A. paper) : Caryl D. Haskins. 
 Metering Efficiency on Customers' Premises ; Henry N. 
 Potter. Xernst Lani])s ; Dr. C. P. Steinmetz. Luminous
 
 ^2 The St. Louis 
 
 Electric Arcs ; Philip Torchio, Distributing Systems from 
 the Standpoint of Theory and Practice ; Herbert A. Wag- 
 ner, Electric Transmission and Distribution for Subur- 
 ban Towns from a General Power Station. 
 
 Section F. — Electric Transportation: Ernst Daniel- 
 son, Theory of the Compensated Repulsion Motor; Philip 
 Dawson, Electrification of British Railways ; Herr F. J. 
 Eichberg, Single-Phase Electric Railways ; Prof. Dr. F. 
 Niethammer, Alternating vs. Direct Current Traction; 
 Prof. Dr. Rasch, The Buffer Machine in Railway Service 
 and Its ]\Iost Suitable Control ; A. H. Armstrong, The 
 Electrification of Steam Lines ; B. J. Arnold, Electric 
 Railways ; Louis Duncan, General Review of Railway 
 Work ; J. B. Entz, The Storage Battery in Electric Rail- 
 way Service ; R. A. Parke, Braking High-Speed Trains ; 
 W. B. Potter. Electric Railways ; F. J. Sprague, The 
 History and Development of the Electric Railway; L. B. 
 Stillwell, Notes on the Electrical Equipment of the Wil- 
 kesbarre & Hazleton Ry. Co. ; H. G. Stott, Central Sta- 
 tion Economics and Operation; W. J. Wilgus, Equipping 
 the Central Terminal. 
 
 Section G. — Electric Communication: Senor Don 
 Julio Cevera Baviera, Electric Communications in Spain; 
 Dr. J. A. Fleming, F. R. S., The Present State of Wire- 
 less Telegraphy ; John Hesketh, A New Danger to Lead- 
 Covered Aerial Telephone Cables ; Herr Joseph Hollos, 
 Simultaneous Telegraphy and Telephony; Saitaro Oi, 
 Telegraphy and Telephony in Japan ; V. Poulsen, System 
 for Producing Continuous Electrical Oscillations ; M. G. 
 de la Touanne, Theory of Telephone Exchange Develop- 
 ment ; J. C. Barclay, Printing Telegraph Systems ; Dr. 
 Lee De Forest, Wireless Telegraph Receivers ; Patrick 
 B. Delany, Rapid Telegraphy; Franz J. Dommerque, The 
 Telephone Problem in Large Cities ; Reginald A. Fessen- 
 den. Wireless Telegraphy ; Hammond V. Hayes, Loaded 
 Telephone Lines in Practice; J. C. Kelsey, Features of 
 the Dunbar Two-Strand Common-Battery Systems ; Dr. 
 A. E. Kennelly, High-Frequency Telephone-Circuit 
 Tests ; Kempster B. Miller, Problem : Automatic vs. Man- 
 ual Telephone Exchange; Dr. Louis M- Potts, Printing
 
 Electrical Handbook ?j 
 
 Telegraphy; Col. Samuel Rcber, Military Use of the 
 Telephone, Telegraph and Cable ; Prof. George F. Sever, 
 Electrolysis of Underground Conductors ; L. W. Stanton, 
 Economical Features in Modern Telephone Engineering; 
 John Stone Stone, The Theory of Wireless Telegraphy. 
 
 Section H. — Electrotherapeutics: Prof. M. Benedikt, 
 A Contribution to the Radiodiagnostics of Diseases of 
 the Head and of the Brain; Dr. J. Bergonie (subject to 
 be announced) ; M. le Docteur G. O'Farrill, Some Im- 
 provements in Generator Apparatus of High-Frequency 
 Currents; Prof. S. Schatzky, The Ionic Theory as Bio- 
 logical Basis for the Therapeutic Action of Electricity; 
 Prof. S. Schatzk}-, Experimental Researches on the 
 Treatment of Tuberculosis by Constant Current ; Dr. J. 
 Riviere, Physico-Therapy of Neurasthenia; Dr. Carl 
 Beck, Recent Advances in Roentgen-Ray Science; Dr. G. 
 G. Burdick, Radiations in Therapeutics ; Dr. Margaret 
 A. Cleaves, The Nature of the Changes Established in 
 Living Tissue by the Action of Oxidizable Metals at the 
 Anode ; Dr. Charles R. Dickson, Some Observations 
 Upon the Treatment of Lupus Vulgaris by Phototherapy, 
 Radiotherapy, and otherwise (A. E. T. A. paper) ; Dr. 
 Emil H. Grubbe, X-Rays and Radio-Active Substances 
 as Therapeutic Agents ; Dr. T. Proctor Hall, The Prin- 
 ciples of Electrotherapeutics ; Dr. J. H. Kellogg, Electro- 
 therapeutics ; Prof. Jacques Loeb, The Control of Life 
 Phenomena Ijj' Electrolytes ; Dr. John Williams Langley, 
 The Purification of Water for Drinking by Electricity ; 
 Dr. G. Betton Massey, The Cataphoric Diffusion of Me- 
 tallic Ions in the Destructive Sterilization of Cancer and 
 Tuberculous Deposits ; Dr. W. J. Morton, Artificial Fluor- 
 escence of the Human Organism as a ]\Ieans of Treat- 
 ing Disease; Dr. C. S. Neiswangcr, Static Electricity in 
 Chronic Nephritis; Dr. Clarence E. Skinner, A Large 
 Fibro-Sarcoma Treated by X-Radiance; Dr. William 
 Benham Snow, Static Electricity in Therapeutics. 
 
 On Tuesday the section meetings will begin at g a. m., 
 and this also will be the rule for Thursday and Friday. 
 On Wednesday at lO a. m. the annual convention of the 
 American Institute of Electrical Engineers will be form-
 
 34 
 
 The St. Louis 
 
 alh- open at Festival Hall on the grounds of the Loui- 
 siana Purchase Exposition. 
 
 Festival Hall 
 
 Festival Hall, where this convention will be held, is 
 the great central figure piece of the Louisiana Purchase 
 Exposition. It has a dome nearly as large as that of St. 
 Peter's at Rome. It is ornate in treatment but chaste in 
 
 The Brazilian Pavilion 
 
 spirit. Its height is emphasized by the terrace imme- 
 diately in its front and by the wide basin at the foot of 
 the slope. It is on the main axis of the grand court and 
 faces toward the principal entrance to the grounds. A 
 monumental archway, 65 feet high, richly decorated, 
 forms the main entrance to the hall. Over the archway 
 is a sculptured group typifying "The Triumph of Music 
 and Art,'" by Philip .Martiny. "Music"' and "Dance" are 
 allegorically represented in groups flanking the entrance. 
 All the decorative details of the building are suggestive 
 of music and the drama. Lyres, harps, Greek masks and
 
 Electrical Handbook j 5 
 
 the names of composers of music are used both for orna- 
 mental effect and to express the festive ideas associated 
 with the structure. The main entrance is flanked on the 
 sides by colonnaded walls. The drum of the dome is 
 treated with a series of circular openings decorated archi- 
 tecturally in the same spirit as the rest of the building. 
 This may be said as to the panels into which the bell of 
 the dome is subdivided. This dome is 140 ft. in diam- 
 eter. That of St. Peter's at Rome is 144 ft. It is 400 ft. 
 from the ground to the highest point of St. Peter's dome, 
 while it is 250 ft. from the level of the grand court to the 
 top of the dome of Festival Hall. The diameter of the 
 building at its base is 192 ft. exclusive of the balustraded 
 terrace upon which it stands. The structure as a whole 
 covers more than two acres. 
 
 The auditorium is intended for the accommodation of 
 about 4,000 persons. It is arranged on the interior like 
 a theatre and finished like a permanent building. Its 
 many windows permit excellent lighting by day, and at 
 night the electric illumination both without and within is 
 a triumph of the electrician's skill. The architect of the 
 Hall of Festivals was Cass Gilbert of New York and St. 
 Paul. The design of the interior was prepared by Air. 
 Masqueray. 
 
 The plan of the central portion of the Exposition 
 grounds suggests the lines of a fan. The great exhibit 
 palaces are on avenues which radiate from a common 
 centre, and at this focal point, on the summit of a domi- 
 nating hill, stands the Hall of Festivals, in the centre of 
 a long, swinging colonnade, called the Colonnade of 
 States. This curved colonnade terminates at either end 
 in circular restaurant pavilions each 140 ft. high, sur- 
 mounted by domes and somewhat corresponding in ar- 
 chitectural treatment to Festival Hall. The colonnade, 
 which is 52 ft. high and over a quarter of a mile in length, 
 extends in semicircular form along the brow of a hill. 
 crowning the crest of a natural amphitheatre 70 ft. high. 
 In the rear of the colonnade and Festival Hall and par- 
 tially screened by them, though on a higher level, is the 
 Art Palace.
 
 36 
 
 The St. Louis 
 
 The face of the hillside is a lawn. Descending from 
 the front of Festival Hall and the restaurant pavilions 
 there are three cascades. The water which gushes forth 
 from the central fountain spreads into a stream 50 ft. 
 wide as it pours over the first fall of 25 ft. It widens out 
 still more as one fall succeeds another until it is a stream 
 152 ft. wide when the Cascades reach the basin at the 
 foot of the slope. 
 
 The total fall is 95 ft. and the length of the central 
 
 The Chinese Building 
 
 cascade is about 300 ft. All three cascades fall into a 
 cascade basin 300 ft. wide which reflects the picture above 
 it and at night aids in enhancing the beauty of the electric 
 illumination. Nearly 90,000 gallons of water per minute 
 are discharged into this basin from the three cascades 
 when they are in full operation. The slope between the 
 cascades and in front of Festival Hall and the Colonnade 
 of States is made into a formal garden, adorned with 
 flowers and shrubs. The design of the Cascades and 
 Colonnade of States and the restaurant pavilions, with 
 the approaches and surrounding gardens, is the work of
 
 Electrical Handbook 57 
 
 Emmanuel L. Masqueray, Chief of Design of the Expo- 
 sition. 
 
 The entire composition made up of the Cascade Gar- 
 dens, Festival Hall and the Colonnade of States has a 
 historic as well as an allegorical significance and is in- 
 tended to express the jubilation of a great nation over 
 the fact that the sway of liberty was extended by the 
 Louisiana Purchase from the Atlantic to the Pacific. 
 This idea is especially conveyed in the sculptural decora- 
 tions, which in a poetical manner portray the various 
 phases of the central theme. 
 
 From a distance the Fountain of Liberty, which stands 
 at the head of the central cascades, seems almost to form 
 a part of the archway by which entrance is afforded to 
 Festival Hall. Mr. Herman A. ]\lcXeil, who modeled the 
 statuary for these gardens, has succeeded in typifj'ing 
 in sculptural form the idea associated with such senti- 
 ments as Liberty, Patriotism, Freedom, Truth, Justice, 
 and Family. 
 
 The doorway of Festival Hall bears like a keystone 
 a composition by Charles J. Pike which suggests gaiety 
 and is composed of two flying figures supporting a lyre. 
 The groups entitled Music and Dance, on either side of 
 the entrance to the Hall of Festivals, present an inter- 
 esting contrast. Augustus Lukeman is the author of 
 Music. The group consists of five figures. In the upper 
 part of the composition is a figure of Orpheus playing 
 the lyre. Orpheus appears to be accompanying on his 
 lyre the voice of a beautiful woman who forms the fore- 
 most figure in the group and who represents vocal music 
 or opera. To her left is a female figure playing a Re- 
 naissance 'cello as an accompaniment to the voice. On 
 her right is a group of two figures. Pan playing the pipes 
 and a Bacchante playing a timbrel and leading a panther. 
 Opposite the group by Lukeman stands the compan- 
 ion group by Michel Tonetti, entitled Dance, which pre- 
 sents an admirable foil to the work of his fellow sculptor. 
 This group is full of life and movement and the figures 
 seem possessed by the fire of a joj^ous, unconstrained 
 spirit. .\ figure in the upper part of the group seems
 
 3S 
 
 T Ji c St. Louis 
 
 Joseph Henry 
 Palace of Electricity
 
 Electrical II a n d book 59 
 
 urging on the dancers and encouraging them to enjoy 
 life while it lasts. The various forms of the dance and 
 its national characteristics are represented by the differ- 
 ent figures. A faun dancing with a nymph, both being 
 strong-limbed and unconventional, present a contrast to 
 two other figures, a delicately proportioned girl and a 
 strong but finely cut man, portraying a more modern 
 type of dance. A girl in the centre of the group typifies 
 the grace of the dance. 
 
 The Colonnade of States, which closes the background 
 of this picture, is an effective portion of the composition 
 and affords opportunity for the use of statuary typifying 
 the twelve States and two territories formed from the 
 original Louisiana Purchase. Square pylons alternate 
 with the columns and the effect suggests somewhat the 
 majestic approach of St. Peter's at Rome. It may remind 
 some of the beautiful Peristyle at Chicago, while the 
 Cascade gardens with their sculpture may awaken a rec- 
 ollection of some famous European gardens. It is said 
 that the cascades at St. Cloud furnished the designer with 
 some suggestions. 
 
 The electrical illumination of the gardens. Cascades. 
 Colonnades, Festival Hall, the Cascade P)asin and the 
 I'"ountain increase the fairylike aspect of the scene at 
 night. 
 
 Around the central cascades, stairways descend on 
 both sides and swing away in opposite directions until 
 the level of the basin below is reached. Flanking the 
 waterways and between them and the stairways run a 
 series of groups of sculiiture which serve both to illus- 
 trate the theme and enhance the decorative effect of the 
 composition. The Fountain of Liberty, with its goddess 
 holding aloft a symbolic torch and its figures of Truth 
 and Justice, commands the scene from its lofty altitude. 
 From beneath springs the arch upon which the figures 
 rest which have for their ideals liberty. Truth and Jus- 
 tice. From the springing of the arch come forth men of 
 heroic proportions riding fish horses and on either side 
 heralds proclaim the advent of the goddess. .\t the base 
 of the arch and flanking the ramp which swings from its
 
 40 
 
 T Ji c St. L u i s 
 
 Benjamin Franklin 
 Palace of Electricity
 
 Electrical H a n d h o o h 41 
 
 sides are groups representing Patriotism and The Fam- 
 ily, these being at the foundation of the Anglo-Saxon 
 idea of liberty. Next beyond these groups, as one de- 
 scends to the Grand Basin, come two others, one repre- 
 senting the idea of Freedom and Physical Libert}- and 
 the other Liberty as it exists under the restraining insti- 
 tutions of civilization. A series of six groups of chil- 
 dren riding fishes add to the picturesque character of the 
 composition. 
 
 The side cascades, wJiose sculptural figures and 
 grt)ups are by Mr. Isadore Konti, are equal in impor- 
 tance to the central cascades. Mr. Konti's work for this 
 part of the Exposition is characteristicallj' decorative, 
 imaginative and graceful. 
 
 The side cascades are over 400 ft. in length and the 
 architect's plan provided for fifteen groups of sculpture 
 for each side. At the head of each cascade and in front 
 of the ornate pavilions which terminate the Colonnade 
 of States are fountains and the groups surmounting these 
 the sculptor calls respectively the Spirit of the Atlantic 
 and the Spirit of the Pacific. The fountain for the oppo- 
 site side is surmounted by a flying female figure with an 
 albatross, typifying the Spirit of the Pacific.
 
 ST. LOUIS EXPOSITION
 
 St. Loin's Exposition 
 
 HISTORICAL 
 
 THE Louisiana Purchase Exposition is the third 
 great international exhibition held in the L^nited 
 States, each illustrating a sentiment. Philadel- 
 phia in 1876 celebrated the centennial of the 
 Declaration of Independence ; Chicago in 1893 commem- 
 orated the four hundredth anniversary of the discovery 
 of America by Columbus ; while the third recognizes the 
 centenary of the acquisition, in 1803-1804, of the great 
 territory then known as Louisiana. Out of this territory 
 there have been formed twelve States and two Terri- 
 tories, — the State of Louisiana, which bears the original 
 name, and the eleven additional States of Arkansas, Col- 
 orado, Iowa, Kansas, Minnesota, Missouri, r^Iontana, Ne- 
 braska, North Dakota, South Dakota, and Wyoming, 
 Indian Territory and Oklahoma. 
 
 The annexation of Louisiana has been declared to be- 
 an event in national history ranking in importance next 
 to the signing of the Declaration of Independence and 
 the adoption of the Constitution, for it not only removed 
 a constantly recurring cause for petty disputes between 
 the United States and several European nations, but 
 also cleared the way by which the LTnion was to take its 
 course westward to the Pacific. 
 
 The historical events which lirought alxnit the acqui- 
 sition of this territory are interesting. Previous to the 
 Purchase, the settlers in Kentucky, Tennessee, and on 
 the upper Ohio were in more or less constant friction 
 with the Spanish settlements and hostile Indians along 
 the western border ; on several occasions open warfare 
 was avoided only by the diplomacy of President Wash- 
 ington and President Adams. In 1801 the Western peo- 
 ple were intensely excited by rumors that Spain had 
 
 45
 
 46 
 
 The St. Louis 
 
 secretly ceded Louisiana to France and that Napoleon, 
 then First Consul of the French Republic, was about to 
 take military possession of the land. President Jefiferson 
 appreciated that the time for action had come, and at 
 once opened negotiations with Napoleon for a peaceful 
 acquisition of the Louisiana tract. These negotiations 
 were consummated on April 30. 1803, by a treaty with 
 France, by which the United States acquired over 875.000 
 square miles of territory lying west of the Mississippi for 
 
 X-- --^ 
 
 the sum of $15,000,000. It is interesting to remember 
 that this sum is scarcely one-third the amount that has 
 been spent on the buildings and grounds of the Exposi- 
 tion that has been built to commemorate the centennial of 
 the treaty. 
 
 The popular demand for a celebration of the centen- 
 nial was first formulated at a meeting of the Missouri 
 Historical Society in September, 1898, at which a ways 
 and means committee consisting of fifty citizens- was ap- 
 pointed. In December, 1898, the Governor of Missouri 
 invited the Governors of all the Louisiana Purchase 
 States to send delegates to a convention, which finally
 
 Electrical H a n d b o o k 4/ 
 
 met in St. Louis in January, 1899. The movement met 
 with hearty response from all of the States directly inter- 
 ested. St. Louis, as the chief city of the Louisiana Pur- 
 chase States, was asked to take the lead in making plans 
 for a world's exposition that would eclipse any other 
 similar enterprise. More than $4,000,000 in private sub- 
 scriptions was immediate!}' raised, the city of St. Louis 
 voted a municipal subscription of $5,000,000, and the 
 State of ]\Iissouri appropriated $1,000,000 for this pur- 
 pose. 
 
 In June, 1900, Congress voted to provide $5,000,000 on 
 condition that the city of St. Louis would raise $10,000,- 
 000. On March 3, 1901, it having been represented in the 
 Senate that St. Louis had fulfilled this condition, an act 
 of Congress appropriated $5,000,000 to the Louisiana 
 Purchase Exposition; this act was sent to President Mc- 
 Kinlej' for approval and became a law. 
 
 The initial fund of $15,000,000 for tho exhibit build- 
 ings and grounds represents the amount given lOi years 
 ago for the Louisiana territory ; at this rate the cost of 
 the territory was somewhat less than $15 per square mile. 
 Congress also appropriated about $3,000,000 for exhibits, 
 and still more recently advanced, as a loan. $4,600,000, to 
 complete the work. The diflferent States have appro- 
 priated about $7,000,000 for the State exhibits (Missouri 
 appropriating $1,000,000), and foreign governments more 
 than $5,000,000. The Pike and its accessories represent 
 an investment of $5,000,000, while exhibitors have ex- 
 pended from $1 to $5 per square foot on the 128 alcres of 
 exhibits. 
 
 About as much time intervened for the spending of 
 this amount as had been consumed in raising it. A vast 
 amount of exploitation work had to be done, — obtaining 
 liberal participation by home and foreign governments, 
 securing the most attractive and representative exhibits 
 from all countries, in many instances requiring favorable 
 action by slow-moving legislatures and ministerial bodies. 
 The work was pushed forward with vigor and appro- 
 priate grounds, buildings, and other equipment were pro- 
 vided. This work was done so efficientlv that President
 
 48 
 
 The St. L ti i s
 
 ^^,,
 
 Electrical Hand b o o k 49 
 
 Francis, the executive officer of the Exposition, com- 
 mended it in pubhc. He said : — 
 
 "This universal Exposition is more than an exhibition 
 of products, or even of processes ; it is more than a con- 
 gregation of the grades of civiHzation, as represented by 
 all races from the primitive to the cultured; it is even 
 more than a symposium of the thought of the thrones, of 
 the student and the moralist. It is all of these com- 
 bined, and the toute ensemble forms a distinct entity 
 whose impress on the present and influence on the future 
 are deep and lasting. It will have a place in history 
 more conspicuous than its projectors ever conceived. 
 I'^or more than a generation to come it will be a marker 
 in the accomplishments and progress of man. So thor- 
 oughl}^ does it represent the world's civilization that if 
 all man's other works were by some unspeakable catas- 
 trophe blotted out, the records here established by the 
 assembled nations would afford all necessary standards 
 for the rebuilding of our entire civilization." 
 
 "By bringing together sections and peoples hitherto 
 remote and unacquainted, and thereby promoting mutual 
 respect, it is a distinct step toward establishing that uni- 
 versal peace for which all right-minded people arc striv- 
 ing." 
 
 The following comparison clearly brings out the enor- 
 mous growth of the Louisiana Purchase Exposition over 
 previous noteworthy expositions : — 
 
 
 
 
 Illumi- 
 
 
 
 
 .Area 
 
 nation 
 
 , 
 
 
 Size 
 
 under roof 
 
 Kk'Ctric 
 
 
 
 .\cres 
 
 .\cres 
 
 Lights 
 
 Cost 
 
 St. Louis, 1904. . . 
 
 T,263 
 
 300 
 
 210,000 
 
 $50,000,000 
 
 Chicago, 1893. . . . 
 
 633 
 
 194 
 
 102,000 
 
 28,000,000 
 
 Paris, I goo 
 
 336 
 
 117 
 
 76.7-'0 
 
 22,000,000 
 
 i^>ufFalo, igoi 
 
 300 
 
 15 
 
 
 6,000,000 
 
 Philadelphia. 1876 
 
 236 
 
 62 
 

 
 ^0 T h c St. L o 11 i s 
 
 THE GROUNDS 
 
 1"he site of the World's Fair is in the western part of 
 the city, aliout five miles west of the Mississippi River, 
 and contains, in a solid tract, 1,263.49 acres, that is ap- 
 proximately two miles east and west by one and one- 
 fourth miles north and south. Of this. 657 acres con- 
 sists of the western portion of Forest Park ( the largest 
 of the city parks), 545 acres west of the park is leased 
 from Washington University and other estates, and 61 
 acres north of the Park is leased for "The Pike." When 
 work was begun in December, igoi, this tract mainly 
 consisted of heavy rolling, forest-covered land, through 
 which meandered a sluggish, treacherous river known as 
 the Des Peres. There was from 75 to 125 feet variation 
 between the hills and sharp dales, while an artificial lake 
 occupied the sites of the ^Mining, Liberal Arts, and Man- 
 ufactures Buildings. To lower the hills and grade up 
 the valleys has required the moving of 2,000,000 cubic 
 yards of earth. The lake has been piled over and the 
 meandering River Des Peres has been confined within a 
 box flume 45 feet wide by 15 feet deep, over which is the 
 central promenade of the Exposition. While much of 
 the old virgin oak forest has had to be sacrificed, quite 
 large maples and elms have taken their place, as the 
 result of a new system of tree transplanting. Lagoons 
 114 miles long with 3^ to 5 feet depth of water encircle 
 the Electricity and Education Buildings and afford ac 
 cess by gondola and electric launches to the nine main 
 Iniildings that form the principal feature of the Exposi- 
 tion. These lagoons have an area of 750,000 square feet 
 and contain 20,000,000 gallons of water. 
 
 In order to avoid placing the main exhibit buildings 
 over the river channel, which pursued a tortuous route 
 through the site, a new channel was excavated and lined 
 with timber. This channel was made to traverse the 
 main streets between the buildings and shortened the 
 stream from 8,800 feet to a more direct route of 4.650 
 feet. 
 
 In addition to the main waterway of the River Des
 
 Electrical Ha ii d b o o k 
 
 5^ 
 
 Peres, which is about one mile long, twenty-five miles 
 of storm water drains have been constructed. 
 
 Numerous obstructions, in the way of trestle bridges, 
 short bends in the channel, etc., below the World's Fair 
 site in Forest Park, were removed in order to provide 
 sufficient area for storm water and to prevent overflow, 
 such as occurred in previous years. 
 
 A Trip on the Lagoons 
 
 All Storm water drains, including roof drains from 
 buildings, discharge into the main channel of the River 
 Des Peres, except downspouts from the east of the Alines 
 Building and from the Education and Electricity Build- 
 ings, the latter two-being situated on islands surrounded 
 by lagoons. 
 
 The lagoons are provided with eight feed pipes from 
 water mains of such capacity that the entire lake can be 
 filled in forty hours. 
 
 A filter plant at the southwest corner of the Mining 
 Building is designed to supply the loss from seepage and
 
 52 
 
 The St. Louis
 
 Electrical Handbook 
 
 53 
 
 evaporation and will be operated continuously during the 
 life of the Fair. 
 
 Arrowhead Lake, some 2,000 feet in length and vary- 
 ing in width from 100 feet to 250 feet, and 4 to 12 feet 
 deep, is used by water craft of the Philippine Village. 
 
 The Life Saving Lake, situated east of the Ceylon 
 Building, is used by the United States Govermiient 
 for life-saving exhibitions, the life-saving station being 
 situated at the east end of the lake. This lake is 480 feet 
 
 long, varies in width from 100 feet to 150 feet, and has a 
 depth of water of from 4 feet to 12 feet. It contains 
 about 3,600,000 gallons of water. 
 
 A system of overHows is installed, also a system of 
 end drains, so that the entire lake can be drained and 
 refilled with fri-sh water as often as required. 
 
 Smaller lakes are constinicted in the Philippine Res- 
 ervation, east of the Agriculture Building and LTnited 
 States Government Bird Cage, besides a number of small 
 lakes in the concessions district. 
 
 A system of sanitary sewers has been constructed to 
 discharge by gravity into two wells in the eastern end of
 
 54 
 
 The St. Louis 
 
 I'M ^T!t '
 
 E 1 c c t r i c a I H a n d h o o k ^j 
 
 the grounds, near the Mines Bnihling, from which sew- 
 age is pumped into the city sew^er mains, a distance of 
 3,650 feet, through a cast iron main. 
 
 Four electrically-driven centrifugal pumps of 18,000,- 
 000 gallons capacity have been installed for this service. 
 Two pumps are installed in each well and connected to 
 mains so that sewage can be pumped directly from the 
 main sewers or from the wells, as may be desired. One 
 or both wells can be cleaned while all four pumps are 
 running. 
 
 A handsome pavilion is erected over these wells, and 
 a room above the pumps is used as a motor room. 
 
 In addition to the cast iron main, the Exposition has 
 laid 62,000 feet of vitrified pipe mains for sanitary 
 sewers. This does not include pipe installed by the 
 various States, foreign governments and concessions, 
 which are required to install their own systems within 
 their grounds and connect them with the Exposition 
 mains. 
 
 A garbage crematory has been erected northwest of 
 the Philippine site, where combustible debris and gar- 
 bage are taken care of, the moist garbage being deposited 
 in cans at the buildings and removed at night. Com- 
 bustible street sweepings are also taken to the garbage 
 plant, being cared for in sacks made especially for this 
 purpose. 
 
 A total area of 5,800,000 square feet has been paved. 
 'I'his is covered with burnt ballast, gravel, macadam, as- 
 phalt and brick. Of this about 500,000 square feet have 
 been covered with brick, 800,000 square feet with asphalt 
 and the remainder with macadam, gravel and burnt 
 ballast. This area is equal to about 55 miles of road 25 
 feet wide.
 
 56 
 
 The St. Louis 
 
 i''^'^ ^ 
 
 
 
 % 

 
 Electrical Handbook j/ 
 
 INTERESTING FACTS ABOUT THE 
 lte<^TION 
 
 f-".^*% .' ■ ■ ■ ' '■'-Ij:. -,, 
 
 Opens April 30th. Closes December ist. 
 
 Forty-four states participate. 
 
 Fifty foreign countries exhibit. 
 
 Exposition cost $50,000,000. 
 
 Wireless telephone station in operation. 
 
 Speech transmitted via electric light rays. 
 
 Edison's personal exhibit of inventions. 
 
 Complete assemblage of the world's races. 
 
 The widest boiler plate ever rolled. 
 
 A practical shoe factory in operation. 
 
 Mining Gulch, twelve acres in extent. 
 
 Queen Victoria's Jubilee presents. 
 
 Philippine exhibit cost $1,000,000. 
 
 Airship tournament, $200,000 in prizes. 
 
 Largest organ, 140 stops, 10,000 pipes. 
 
 Clock dial 112 feet across, largest on earth. 
 
 Native Alaska buildings, real totem poles. 
 
 Ainu hunters and fishers, Japan aborigines. 
 
 Stadium, seating capacity 27,000 persons. 
 
 Revival Olympic games of ancient Greece. 
 
 Iron statue of Vulcan 50 feet high. 
 
 Historical exhibit of Baltimore and Ohio Railroad. 
 
 Locomotive tests throughout the season. 
 
 Liberty Bell in Pennsylvania Building. 
 
 Ice Plant, 300 tons capacity daily. 
 
 Giant Bird Cage, 300 feet long. , 
 
 Rose Garden, ten acres in area. 
 
 Full-sized miKh-l t". S. war^Iiip. 
 
 Decorative sculpture cost $500,000. 
 
 Model Indian school, one hundred pupils.
 
 5S 
 
 T li c St. Lou is
 
 Electrical Handbook 59 
 
 FEATURES OF THE EXPOSFnOX 
 
 The main picture of the Exposition centres around 
 Festival Hall, which is 200 feet high, at the head of the 
 Grand Basin, an architectural masterpiece by Cass Gil- 
 bert. From this pour the three cascades, with ninety- 
 four feet fall, into the Grand Basin. A curved colon- 
 nade flanks each side of Festival Hall, terminating in 
 a restaurant pavilion at each end, with heroic .statues, 
 symbolizing the fourteen States of the Louisiana Pur- 
 chase, occupying intervening alcoves. 
 
 The Art Building, which is 450 by 830 feet, is just 
 south of Festival Hall, and this will be- the permanent 
 monument of the Exposition. It is constructed of brick, 
 stone and terra cotta, at a cost of $1,000,000; designed 
 by Cass Gilbert of St. Paul. 
 
 Radiating from the front of Festival Hall, and on a 
 plane some sixty feet lower, are the following main 
 buildings of the Exposition : — 
 
 To the extreme right and marking the eastern end of 
 the grounds is the Government Building, 250 by 800 
 feet and costing $450,000. It is a dignified, classic struc- 
 ture, designed by J. Knox Taylor of Washington, in 
 which all the different departments of the government 
 are represented. Huge guns are shown on the adjacent 
 terraces. The Fisheries Building, covering an area of 
 135 by 135 feet, adjoins on the south. 
 
 The Mining and Metallurgy Building, which is 525 
 by 750 feet and cost $500,000, was designed by Theo. C. 
 Link of St. Louis on unique lines, with towering obelisks. 
 It fronts the Government Building, and its twenty-five 
 acres of outside working exhibits lie in the adjoining 
 gulch that runs at the base of the Plateau of States. 
 
 The Liberal Arts Building, which is 525 by 750 feet, 
 covering nine acres and costing $450,000, was designed 
 by Barnett, Haynes & Barnctt of St. Louis. It is in 
 front of the Mining Building, with an intervening 
 sunken garden. In this building are the civil engineer- 
 ing exhibits. 
 
 West of the .Mining Building, and surrounded by the
 
 6o 
 
 The St. Louis 

 
 Electrical Handbook 6i 
 
 lagoon, is the Education Building, which is 525 bj' 750 
 feet, costing $400,000. It is one of the purest and most 
 dignified designs in classic architecture on the grounds, 
 and was designed by Eames & Young of St. Louis. 
 
 The dimensions of the Manufactures Building are 
 525 by 1,200 feet, covering twelve acres. The building 
 cost $850,000. It lies between the Plaza of Orleans on 
 the east and the Grand, or Plaza of St. Louis, on the 
 west, has a most imposing entrance on the south side, 
 and was designed by Carrere & Hastings of New York. 
 
 Facing the west side of the Grand Basin, and sur- 
 rounded by the lagoon, is the Electricity Building, 525 
 by 750 feet, covering nine acres, costing $400,000, de- 
 signed by Walker & Kimball of Omaha. 
 
 West of the Electricity Building is ^lachinery liall, 
 525 by 1,100 feet, covering twelve acres, costing $600,000, 
 with its numerous towers, designed by Widmann, Walsh 
 & Boissellierc. Adjoining to the west is the boiler house, 
 a fire-proof structure covering two and one-half acres. 
 
 North of Machinery Hall, and fronting on the Pike, 
 is the Transportation Building, which is 525 by 1,300 feet, 
 covering fifteen acres, costing $700,000, designed by E. 
 L. Masqueray. This building forms the extreme western 
 end of the main group, or principal picture. 
 
 Fronting on the west side of Skinker Road are the 
 foreign government buildings, w'hile on a commanding 
 terrace are the dignified Tudor-Gothic granite buildings 
 of Washington University that have been leased for the 
 administration offices. As architectural studies of all 
 nationalities this group is most interesting. 
 
 South of the administration offices is the Forestry, 
 Fish and Game Building, 400 by 600 feet. Farther south. 
 on a rising slope, is the Agricultural Building, the largest 
 on the grounds, 500 by 1,600 feet, covering twenty acres 
 and costing $800,000. Adjoining it is the Horticultural 
 Building, 300 by 1,000 feet, costing $200,000, and the huge 
 Live Stock Pavilions, covering forty acres. 
 
 In the extreme western part of the grounds is the 
 Athletic Stadium, seating 27.000. and at Intramural Sta- 
 tion No. 7 is the Philippine exhibit, a most interesting
 
 62 
 
 The St. Louis 
 
 Sn TTWS^ 
 
 ^li '''^ ii ^
 
 Electrical Hand b o o k dj 
 
 and complete exhibit of our new colonies. It occupies 
 forty-two acres and cost over $i,ooo,coo. 
 
 The military camps, garbage crematory, barns, sto- 
 rage warehouses, etc., are in the southwestern corner of 
 the grounds. 
 
 In the southern part of the grounds is a renmant of 
 the fine old oak forest that covered the major portion of 
 the Exposition site three years ago. 
 
 In the southeastern portion of the Exposition is the 
 Plateau of States and the huge Inside Inn, 400 by 800, 
 accommodating 6,000 guests. The various State build- 
 ings present a variety of architectural studies and his- 
 toric reproductions, some of which are very attractive. 
 The State of Washington Building is noteworthy for the 
 eight Oregon pine timbers which enclose it. They meas- 
 ure 2 feet by 2 feet by no feet and are clear sticks of 
 timber. Opposite is the Aviary, or "Bird Cage," a huge 
 cage 300 feet long, occupied by a rich collection of birds. 
 
 Conspicuous by their height, and affording a fine 
 view of the Exposition and St. Louis, are the Observa- 
 tory Tower, 300 feet high, in the northeastern corner of 
 the grounds, and the Ferris Wheel, 250 feet in diameter, 
 on the Skinker Road, adjoining the boiler house in the 
 western part. 
 
 Fronting 4,000 feet along the north side of the grounds 
 and extending 2,000 feet along the Skinker Road is The 
 Pike, with its concessions and amusements. The Pike 
 in St. Louis is what the Midway was at the Columbian 
 Exposition in Chicago, only more so. Its dominating 
 spirit is appropriately indicated by the group of statuary 
 placed at its entrance, which represents a company of 
 cowboys "shooting up" a Western town. Here are 
 grouped in the widest profusion circuses, shows, delu- 
 sions, mechanical effects and fakes, constituting a world 
 of its own. Here are also gathered representatives of 
 nations and peoples from every corner of the inhabited 
 globe. It is safe to say that here the visitor will be sep- 
 arated from more of his money than he will care to com- 
 pute at the end of a week's visit, but it is also safe to say 
 that with the feeling of sadness at the flattened pocket-
 
 64 
 
 The St. Louis
 
 Electrical Hand b o o k 6j 
 
 book will come the cheerful recollection that he has re- 
 ceived his money's worth. 
 
 The Tyrolean Alps, at the main or Lindell entrance, 
 is especially noteworthy in its faithful and beautiful re- 
 production of an Alpine village. Among the other 
 amusement features to be found on the Pike may be 
 mentioned the following: "Irish Village," "Under and 
 Over the Sea," "Streets of Seville," "Hunting in the 
 Ozarks," "Hagenbeck's Animals," "Mysterious Asia," 
 "r^Ioorish Palace," "Fair Japan," "Hereafter," "Glass- 
 weaving," "Paris," "Ancient Rome," "Creation," "Palais 
 du Costumes," "Infant Incubator," "Indian Congress and 
 Wild West Show," "Siberian Railroad," "Deep Sea 
 Divers," "Cairo," "Chinese Village," "Constantinople," 
 "Esquimaux and Laplanders," "]\Iagic Whirlpool," "Clifif 
 Dwellers," "Battle Abbey," "Naval Exhibit," "Jim Key," 
 an educated horse ; "Old Plantation," "Galveston Flood," 
 "Hale's Fire Fighters," "New York to the North Pole," 
 "Jerusalem," "Observation Wheel," "Miniature Rail- 
 way," "Poultry Farm," "Transvaal Spectacle," "Colo- 
 rado Gold Mine," "Shoot the Chutes," "Scenic Railway" 
 and "Temple of Mirth." 
 
 THE CASCADES 
 
 The Cascades descending the gentle slope between the 
 Festival Hall and the Grand Basin form the leading 
 monumental feature of the Exposition, and must be seen 
 to be appreciated in all their beauty. The water for their 
 use is pumped from the Grand Basin and it is expected 
 that the lagoons will be kept fresh by the circulation thus 
 produced in them, as well as by aeration in its frequently- 
 broken fall down the steps. At the top of the hill in 
 front of Festival Hall and at each of the pagodas, there 
 is a fountain, that in the centre being the largest. 
 
 The width of the central cascade at the top is about 
 40 ft., which increases to 160 ft. at the foot. There is a 
 total descent of about 90 ft., including a sheer fall of 21 
 ft. into the basin. The cascade is made of three sheets 
 of water separated by two curved division walls. Wide
 
 66 
 
 The St. L u ! s 
 
 West Founlain, i he Cascades
 
 Electrical H a n d b o o k 6/ 
 
 curved promenades witli series of shallow steps border 
 both of its sides. The two side cascades resemble it in 
 general features, but are much smaller and have only 
 single sheets of water about i8 ft. wide at the top and 50 
 ft. at the foot. They are also bordered on each side by 
 low steps, which, unlike those of the central cascade, are 
 carried by a bridge across the lower part of the fall. Be- 
 yond this bridge there is a wide curved basin in which the 
 water comes to rest before it passes through an under- 
 ground conduit to an elliptical basin about 60 ft. long on 
 the opposite side of the main promenade. From this 
 basin the water flows through a concealed outlet into the 
 Grand Basin. The central cascade is designed for a flow 
 of 5i,coo gal. per minute; provision is made for eighteen 
 i^-in. jets and ten i-in. jets, which are delivered to it 
 from the sides and bases. The two side cascades are 
 each designed for about half the central flow. The water 
 from the lagoons returns through a wooden flume in the 
 Grand Basin to the pump room under the platform of the 
 east cascade, where the hj^draulic and the electric plants 
 are installed. There are three Worthington centrifugal 
 pumps, 1 1 1/2 ft. high, with 40-in. suction and 36-in. dis- 
 charge pipes. They are operated by 25-cycle, three- 
 phase Westinghouse induction motors of 2,000 h.p. capac- 
 ity, which are said to be the largest of that kind yet built. 
 The pumps discharge into a ioo,ooo-gaI. steel tank hav- 
 ing an air cushion maintained bj^ a special air pump at 
 a pressure of about 60 pounds per square inch to provide 
 a uniform flow and force the water to the upi)er lountain. 
 Provision is made for draining each of the basins in the 
 fountains and cascades, if necessary, and for draining the 
 Grand Basin and lagoons through outfalls to the water- 
 way if desirable. 
 
 When the Cascades pumping plant was designed, it 
 was estimated that it would have a capacity of 90,000 gal. 
 a minute. As a matter of fact the actual flow of water 
 has never been measured, but the important fact remains 
 that the capacitj- of the plant is 5,400,000 gal. an hour, 
 said to be twice the total consuni])tion of water by tiie 
 city of St. Louis.
 
 68 
 
 The St. Louis 
 
 The induction motors are direct connected to the 
 Worthington centrifugal pumps and each unit may work 
 independently. The motors are remarkable for their 
 high efficiency and for the high voltage at which they 
 operate. They are wound for three-phase, 6,600 volts, 
 3,000 alternations, corresponding to a synchronous speed 
 of 375 rev. per min.. the actual speed being about 365 
 revolutions. The primary winding consists of machine- 
 wound heavy insulated coils put into half closed slots in 
 
 Electric Fountain, Tyrolean Alps 
 
 the laminations. The secondary is also phase-wound, 
 but for a- lower voltage, the ends of the winding going to 
 three collector rings, and from them to the starting rheo- 
 stat. 
 
 ^Motors of such capacity must be started with great 
 care if the generating plant is not to be affected. In this 
 case, the pumps are kept ready for work and filled with 
 water, being connected to the city water mains in order 
 that they might be filled at any time should they in some 
 way be emptied. As the Cascades run ever}- day and in 
 the evening at regular hours, the attendants at the West-
 
 Electrical Handbook 
 
 6q 
 
 inghouse Exposition service plant in [Machinery Hall 
 know the time of starting the motors, keep the voltage 
 at abont 4.500, and after the motors have been started the 
 voltage on the generators is graduallj- raised to 6,600. 
 The starting rheostat consists of many grid-tj-pe resist- 
 ances placed on shelves where they are well ventilated. 
 They are pnt into circuit by means of large oil-immersed 
 controllers operated by hand. These controllers, because 
 of the exceptional size of the motors, have an unusually 
 large number of steps. The starting has been done since 
 
 IW 
 
 m 
 
 
 r^ 
 
 Missouri State Building i 
 
 the opening of the Exposition without accident.'^, and is 
 performed very smoothly, the starting current being 
 raised up gradual!)" from about one-half of the normal 
 current. 
 
 The switchl)oard is provided with high tension oil- 
 immersed automatic circuit-breakers, and with Westing- 
 house ammeters and voltmeters for each phase. Inte- 
 grating and indicating wattmeters are provided at the 
 outgoing ends of the cables at the main switchboard of 
 the generating plant in Machinery Hall. The motors 
 operate under cxcei)tii)nally heavy conditions in a very
 
 / The St. L o II i s 
 
 humid place witli a floor at the level of the lagoons. To 
 protect the motors against moisture it has been consid- 
 ered necessary to circulate direct current through the 
 windings during a considerable part of the time when 
 they are out of service. 
 
 TLLUMIX.\TIOX OF THE EXPOSITION 
 
 The spectacular effects which make one exposition 
 more notable than its predecessor are due largely to elec- 
 tric lighting. Electrical engineers have learned much 
 
 Plaza at St. Louis by Xiglit 
 
 about illuminating effects from expositions, for nowhere 
 else are presented the problems of brilliantly lighting 
 such great areas, both indoors and out. After much dis- 
 cussion and experiment it has been decided that the most 
 satisfactory way of illuminating grounds and buildings 
 is by the use of incandescent lamps alone. By spacing 
 the lamps at short intervals the effect is a line of light 
 marking each architectural outline. Inside the buildings 
 the conditions are wholly different, for the. light must 
 be such that visitors can examine minute details and read 
 inscriptions anywhere. Arc lights of high candle-power 
 with suitable reflectors give the best results. The success
 
 Electrical Ha ii d hook 
 
 71 
 
 of the illuniinatioii is due in large measure to the efforts 
 of Henry Rustin. formerly chief electrical and mechan- 
 ical engineer of the Exposition. 
 
 The magnitude of the lighting scheme at St. Louis is 
 most impressive, for the grounds, a mile wide and two 
 miles in length, must be made conspicuous by the illumi- 
 nations at night. To make this illumination brilliant and 
 impressive, efforts were concentrated at the architec- 
 tural centre of the Exposition ; this includes the struc- 
 tures surrounding the Cascade gardens, the Grand Basin 
 
 riic Lagoon by Xiylit 
 
 and the Plaza of St. Louis, Festival Hall, and the Colon- 
 nade of States. Upon these are distributed 20,oco incan- 
 descent lamps. This portion of the lighting scheme is 
 partially experimental, efforts being made to get combi- 
 nations of color that will give various rainbow effects. 
 On the inside of tlie pillars forming the Colonnade are 
 vertical lines of lamps, each unit consisting of three 
 incandescent lights, the first having a clear bulb, the sec- 
 ond a ruby, and the third an emerald tint. This enables 
 many color effects to be obtained, as all the lights of one 
 color can be turned on or any combination of them can
 
 J 2 The St. L I) u I s 
 
 be blended. This is obtained I)y arranging the colored 
 lamps upon different circuits. 
 
 The current supply is from a three-phase system, sep- 
 arate feeders extending to each color of light with a com- 
 mon neutral for all three. Water rheostats are arranged 
 in each circuit so that the effect of the lights gradually 
 increasing in brilliancy up to full power can be obtained. 
 With these different combinations set programs are ar- 
 ranged for the edification of the evening visitors. 
 
 For the decorative lighting, incandescent lamps of 
 small candle-power are most effective from both an 
 economic and a spectacular standpoint. No arc lamps 
 for decorative lighting have been used at the Exposition, 
 for the contrast between the white light of the arc and 
 the red of the incandescent is not pleasing. As may be 
 noted from the illustration, the eastern fagade of the 
 Electricity Building is exceedingly beautiful with every 
 outline marked with rows of incandescent lamps. About 
 12.000 lamps have been placed each on the Palaces of 
 Education and Electricity, about 20,oco on Machinery 
 Hall. 17,000 on Varied Industries Building, and 10.000 
 upon Transportation Building. Incandescent lamps of 
 8 c-p. have been used almost without exception. About 
 a half million incandescent lamps will be used during the 
 entire season for exterior illumination. 
 
 Search-lights are stationed on the roofs of the prin- 
 cipal buildings and will play from one interesting feature 
 to another. At the present time the largest search-light 
 in the world surmounts the dome of the Women's Maga- 
 zine Building; the great beam of light from it is conspic- 
 uous over all the grounds and the city of St. Louis. 
 
 The arc-lighting plant is used to light the interior of 
 the buildings, the seven miles of stockade enclosing the 
 grounds, and the Pike. Two thousand arc lamps were 
 needed to carry out this plan. After carefully consider- 
 ing the requirements it was decided to adopt the series 
 alternating-current enclosed arc lamp system operating at 
 60 cycles and 2,300 volts. The current supply is from a 
 6oo-kw. alternator direct connected to a Willans type of 
 engine operating at 277 rev. per min. The regulating
 
 Electrical Handbook j^ 
 
 device of series alternating system is a constant-current 
 transformer having its primary winding connected di- 
 rectly to the 2,300 volt alternator. These transformers 
 are cooled by a natural draft of air which is directed by a 
 light casing that also protects the moving parts. 
 
 he Pike" 
 
 The installation in Machinery Hall consists of eight- 
 een transformers of this type, each with a capacity of 62 
 kw. ; each transformer supplies 100 arc lamps taking a 
 constant current of 6.6 amperes. Each transformer is 
 provided with a switchboard panel equipped with the 
 necessary controlling and measuring apparatus. All
 
 74 
 
 The St. Lou 
 
 wires of every description are under ground, and these 
 are carried in conduits of pump log-ducts which are 
 simply boarded in the trenches, except under the lagoons, 
 where they are enclosed in cement. The lighting mains 
 consist of lead-covered cables. 
 
 All the arc lamps used on the E.xposition grounds are 
 of the series alternating-current type. This lamp oper- 
 ates on the differential principle with shunt and series 
 magnets which move two laminated armatures connected 
 
 Palace of Electricity Illuminated 
 
 through a lever to a carbon clutch. The shunt and series 
 magnets work in opposition and tend to oppose any 
 change in the arc pressure. By means of a sliding weight 
 adjustment for the impressed pressure can be made; this 
 helps the series magnet to strike the arc at the proper 
 pressure. A small starting resistance is provided, and a 
 mechanical cut-out is arranged to operate in case of open 
 circuit in the lamp. Vibrations of the armature core due 
 to the alternating current are absorbed by a small leaf 
 spring in each armature. Each of these lamps take 6.6 
 amperes at /2 volts, or 430 watts.
 
 E I c c t r i c a 1 H a n d b o o k /j 
 
 TRAXSPORTATIOX WITHIX THE GROUNDS 
 
 New problems of transportation arise as the inter- 
 national expositions grow in extent ; these have been met 
 at St. Louis in several ways. The first and most impor- 
 tant means of transportation about the grounds is by the 
 Intramural railway, a double-track, overhead-trolley, 
 electric railway running around the edge of the main 
 Exposition enclosure and designed to give visitors a 
 convenient means of reaching every section of the Expo- 
 sition grounds. For a considerable portion of its route 
 the Intramural skirts the enclosure of. the Exposition. 
 Two miles of its course are directly through the heart of 
 one of the most interesting portions of the grounds, and 
 for about one mile it runs through the fine oak forest of 
 Forest Park. The total length measured as single track 
 is 12.^6 miles, in addition to which there is 0.75 mile of 
 storage track for Intramural cars. The length of single 
 track trestle is 1.19 miles. The road runs partly on the 
 surface and partly on trestle work, following the topog- 
 raph}^ of the grounds. The right of way is fenced, and 
 stops are made only at regular stations. Its terminals 
 are located inside the grounds, respectively east and west 
 of the Lindell or main entrance, these being about 600 ft. 
 apart, leaving a broad avenue between, so that the 
 road does not deface the fine central view of the "main 
 picture." The <:eniiinal stations of the road are simple 
 dead-end stations, each containing two stub tracks, so 
 that cars may arrive and depart without conflict. There 
 are 17 stations on the Intramural route, consisting of 
 covered platforms with turnstile exits; the same platform 
 is used for loading and unloading. Tickets are sold at 
 the stations and passcngor> pay their fare before enter- 
 ing, passing to the loading platforms through turnstiles. 
 Wherever there are hills along the route the stations 
 have been placed at the top, so that the passengers are 
 saved ranch of the fatigue of climbing hills. 
 
 In the operation of the road it is the intention to give 
 frequent service rather than to run cars at high speed. 
 It is believed that visitors will use the Intramural as a
 
 76 
 
 / 
 
 T Ji c St. Lou 
 
 I s 
 
 means of obtaining a general, or as it were, a sky-line 
 survey of the Exposition as a whole, and will desire to 
 travel at a rate of speed sufficiently slow to enable them 
 to enjoy each building and special feature along the 
 route. It is also believed that visitors will find a trip 
 around the Intrannn\'il a pleasant means of resting from 
 the fatigue of walking through the buildings and grounds. 
 For these reasons cars will be run on a five-minute head- 
 Ava\\ or less, and will require about 42 minutes to make 
 
 Thf 1 ntraniural Car- 
 
 the circuit from terminal to terminal. \\'hen traffic is 
 comparatively light, cars will be run singly, but when 
 travel is heavy they will be operated in two or three-car 
 trains, as the traffic may require. The fare from any 
 station to any other station is 10 cents. 
 
 The rails are 65 lb. A. S. C. E. standard T-section. 
 The road is standard-gauge and cinder ballasted. Cen- 
 tre-pole construction was adopted except where the road 
 runs through the woodland. There are 51 closed cars 
 and seven 14-bench open cars, it being the intention to 
 use the open cars only on days of very heavy traffic. The 
 cars measure 34 ft. over body, with 5-ft. platforms, mak-
 
 E I e c f r i c a I H a ii d b o o k JJ 
 
 ing 44 ft. over all. Eacli car has seating capacity for 52 
 passengers. The closed cars are fitted with necessary 
 train control apparatus with four motors to each car. 
 Both platforms are vestibuled and are protected b\- fold- 
 ing gates. There are no car steps, as the loading and 
 imloading platforms at the stations are built to come flush 
 with the car platforms. 
 
 Repair and storage shops for the Intramural cars 
 have lieen built in the extreme southwest corner of the 
 grounds. The shops are temporary in character and are 
 fitted with pits and the small tools required for making 
 light repairs. No heavy repair work will be attempted. 
 Power for the Intramural road is supplied from a group 
 of 600-volt generating units of accepted railway types 
 located in Machinery Hall. 
 
 A trip which is even more enjoyable and instructive 
 is one on an electric automobile through the main thor- 
 oughfares of the Exposition. This is the first exposi- 
 tion at which such a service has been rendered. The 
 generous patronage received indicates that it meets an 
 actual want. The regular route covers the centre of the 
 Exposition and a visit to each of the exhibit palaces. At 
 intervals a stop is made and the chauffeur describes the 
 various points of interest. A fare of 25 cents is charged. 
 If the visitor wishes the exclusive use of a vehicle he 
 can hire a cab or brougham at a rate of $4 per hour and 
 take his friends to any part of the grounds. There is but 
 one forbidden roadway, which is between the Louisiana 
 Purchase Monument and the Grand Basin ; over this no 
 vehicles can pass. The company also has a number of 
 large automobiles running from the princijjal hotels in 
 the city into the Exposition grounds. The fare for this 
 ride is 50 cents. Arrangements are also made to meet 
 parties or delegations at the trains and convey them to 
 the grounds or to the Inside Inn. A special gate into the 
 grounds is provided for the automobiles. The automo- 
 bile service begins at 8 a. m. and continues until i o'clock 
 at night. In order to reduce the fire hazard, all gasoline 
 automobiles are excluded from the grounds, which leaves, 
 the field exclusively to storage-battery vehicles.
 
 78 
 
 The St. Lo 
 
 U 1 s 
 
 The Automobile Company lias made an excellent rec- 
 ord, as not one accident of any kind has occurred with 
 their vehicles. This is due largely to a rigid system of 
 inspection to keep the automobiles in good condition, and 
 to the careful instruction of all its operators. Each can- 
 didate must be an experienced chauffeur and before tak- 
 ing charge of a vehicle is tutored by an inspector with 
 reference to the care and operation of the automobile and 
 also regarding the facts and figures about the Exposition 
 which will be of interest to his passengers. There is no 
 prescribed speed regulation, because fast driving would 
 
 Seeing the Fair by Automobile 
 
 defeat the purpose of the trip, which is to give the pas- 
 sengers a chance to comprehend the beautiful surround- 
 ings. The automobiles seldom if ever exceed eight miles 
 an hour. 
 
 The company has built a garage and charging station 
 at the east end of the ^lodel Cit}^ and near the De Forest 
 Tower. Three 50-h.p. gas engines are belted to iio-volt 
 generators to supply the current. The leads extend to 
 the charging plugs along one side of the building where 
 fifty-five batteries can be charged at a time. Another 
 charging station is downtown at the corner of Thirteenth 
 and Locust streets. There are two batteries for each
 
 Electrical Hand b o o k jq 
 
 automobile so that each can be kept in continuous service, 
 one battery being charged while the other is in service. 
 The batter}' is carried beneath the bodj' of the automo- 
 bile and when it is released the vehicle is run over a lift 
 which is level with the floor. .\ wheel truck is pushed 
 over the lift and under the battery. It is raised to receive 
 the battery and when lowered is moved to a charging 
 plug. There are four of these lifts, operated hy Ingersol- 
 Sargant oil pumps driven by electric motors. Six bat- 
 teries can be removed and replaced every ten minutes. 
 The charging generators are kept at i lo volts and the 
 current charge to each battery is regulated h\ a rheostat. 
 As there is an attendant at the generators and at the bat- 
 teries all the time, no automatic over-charge or release is 
 employed. The batteries receive charges once a day. 
 which is sufficient for a 25-mile run. Once a week each 
 battery is discharged under the observation of an expert 
 and readings are taken every five minutes. Any neces- 
 sary repairs or renewals are made at this time. When 
 fully charged the density of the electrolyte is kept at 1,300, 
 which falls to about 1,250 at end of normal discharge. 
 The plates for these batteries are shipped direct from 
 the supply house and assembled and the connections 
 burned together at the station. Wooden separators are 
 employed, as they seem to give better results than rul)bor. 
 All batteries have 42 Exide cells, with from nine to nine- 
 teen W. V. plates, depending upon the size of the vehicle. 
 The motors operate at eighty volts and twenty to thirty- 
 five ampere capacit\-. with series-parallel control. 
 
 After a circuit of the grounds in an automobile has 
 been made during the day, the visitor will find great 
 pleasure in a launch trip about the lagoons during the 
 evening. The most beautiful effect imaginable is during 
 the illumination when the myriad lights on the buildings 
 are reflected in the waters of the Grand Basiin and la- 
 goons. A journey of two and one-half miles can be 
 made through the Grand Basin, across the base of the 
 Cascades, around the palaces of Electricity, Education, 
 and past the Machinery. Varied Industries. Manufac- 
 tures. Mining, and German Buildings. During the day-
 
 T he St. L o II i s 
 
 time the launches are covered witli awnings, in the even- 
 ing the awnings are removed. The Launch and Gondola 
 Concession Companj' has 31 electric, 5 gasoline launches 
 and 15 gondolas. The gasoline launches are made in 
 fantastic designs representing swans, peacocks, dragons, 
 etc. The gondolas are imported direct from Venice and 
 the singing Venetian gondoliers who accompany them 
 have been selected both for their voice and skill with the 
 oars. The launches are 30 feet in length and seven beam 
 and draw thirty inches of water when loaded. About 40 
 
 Charging Station, Electric Launches 
 
 passengers can be carried. The fare for the trip is 25 
 cents. The electric boats travel at the rate of four and 
 one-half miles per hour and make the circuit in about a 
 half hour. 
 
 The launches are equipped with Willard storage bat- 
 teries. Each contains 44 cells of 140 ampere-hour capac- 
 ity, the positive plates having the new tj^pe envelope, 
 which gives excellent results by preventing to a great 
 extent the shedding of active material. E^ch battery 
 is divided into two parts and by means of a series paral- 
 lel controller gives three speeds forward and two on 
 reverse. The motors are of 2 horse power, compound
 
 E I c c t r i c a I H a ii d book 8i 
 
 wound, four-pole, with hall thrust and axle bearings. On 
 account of the slack water and the lagoons being shel- 
 tered from the winds a boat will run one hundred miles 
 on a charge. At present they are in service from five to 
 six hours a day. 
 
 TXTERCOMMUXICATIOX OX THE GROUXDS 
 
 The best examples ever shown of temporary installa- 
 tions of telegraph, telephone and fire alarm systems are 
 those throughout the World's Fair grounds. The latest 
 and most modern equipment is used, and the whole in- 
 stallation would be a credit to any city. This result has 
 been through the combined efforts of the electrical man- 
 ufacturers, the operating telephone and telegraph com- 
 panies and the World's Fair officials. The central sta- 
 tions and most of the apparatus are located in the Elec- 
 tricity Building, where the exhibit and commercial fea- 
 tures can be combined to best advantage. 
 
 The rate of improvement in telephone apparatus to 
 the layman's mind is judged by his daily contact with the 
 receiver and transmitter. He has no conception of the 
 many engineering difficulties overcome until he has the 
 opportunity to inspect a central exchange and the ap- 
 paratus therein. X"o better opportunity will be afforded 
 for this than a visit to the operating telephone exchanges 
 in the Electricity Building. 
 
 Telephones are freely distributed for the use of both 
 exhibitors and the public, and, by means of the connec- 
 tion through the St. Louis exchanges, one can converse 
 from one exhibit to another, to any building on the Fair 
 grounds, to any place in the city or as far east as the 
 Atlantic and west to the Rocky Mountains. Telegrams, 
 cablegrams and even aerograms can l)c sent from the 
 telegraph stations within the building to any part of the 
 world. Although these facilities are in universal use, 
 yet but very few understand the operations necessary to 
 give such service, so that the diflferent operating com- 
 panies have demonstrators to explain the workings of 
 the apparatus and systems.
 
 6"-' 
 
 T h c St. L o u i 
 
 The Exposition grounds are tlireaded with under- 
 ground cables, connecting the separate departments of 
 the Exposition, the greater portion of the exhibitors and 
 most of the State and foreign buildings. The independ- 
 ent telephone service is handled b}^ the Kinloch Company 
 through the exchange of the Kellogg Switchboard and 
 Supply Company, which is exhibiting a full lamp, full 
 nuiltiple, common battery board of i.2CO lines, but equip- 
 ped for an ultimate capacity of 3.600 lines. Current is 
 supplied by a power plant and its complement of bat- 
 teries and generators on the floor of the exhibit. The 
 
 «F" 
 
 Kinloch Telephone Central, Palace of Electricity 
 
 cables, terminals, relays and distributing frames are sub- 
 ject to inspection. 
 
 Besides the exchange switchboard, there is an 1,800- 
 line section of switchboard which is an exact duplicate 
 of the sections of those at Buflfalo, Cleveland and Los 
 Angeles, three of the largest installations, all of which 
 are in successful operation. Each piece of apparatus 
 used in the construction of telephones and switchboards 
 is shown in the minutest detail. All the several styles of 
 telephones have been erected and their uses, made plain. 
 r^Iachines for insulating copper wire are in full operation 
 with skilled mechanics in attendance. A visit and care-
 
 Electrical H a n d h o o k 8^ 
 
 ful inspection of the Kellogg exhil)it is of interest for 
 everyone. 
 
 The American Telephone & Telegraph Company oc- 
 cupies 3.C0O square feet adjoining the Western Electric 
 Company in the Electricity Building. Here is located 
 the complete equipment of a standard Bell exchange in 
 active operation. Service is rendered to all subscribers 
 on the Exposition grounds, and connection is made to all 
 exchanges in the United States reached by long-distance 
 lines. The switchboard has an ultimate capacity of 9.600 
 lines, 9,600 multiple jacks and 600 trunks, but the Expo- 
 sition service requires only 1.500 lines, which are brought 
 into the exchange through an extensive underground 
 plant. There are nine operating positions, the one in the 
 west end handling all incoming calls from other offices of 
 the St. Louis exchange and from long-distance points, 
 while the others answer the calls of subscribers connected 
 with this board, each operator being capable of handling 
 a maximum of sixty lines. When a subscriber makes a 
 call a small electric lamp is lighted near the lower part 
 of the board. Associated with each lamp is an answer- 
 ing jack by means of which the operator plugs in on the 
 subscriber's line and takes the call. Just above the small 
 electric lamps are the jacks for trunk lines to outlying 
 exchanges. Through these trunk lines the operators 
 complete connection with parties called for by subscrib- 
 ers connected with the exchange. In the upper portion 
 of the board are the multiple jacks by means of which 
 parties calling for subscribers connected with this ex- 
 change are placed in communication with them. At the 
 left of the board and on the same platform is a complete 
 power plant, including a motor-generator charging set, 
 storage battery, ringing generator and power board: also 
 a line relay rack and an intermediate distributing board. 
 In addition to the contract stations about the grounds, 
 there are a large number of slot-pay stations at conven- 
 ient locations in the buildings, where any visitor can 
 secure local and long-distance connections at the regular 
 rates. Besides a corps of operators at the exchange, 
 there are several demonstrators who explain to visitors
 
 <S'7 
 
 The St. Louis 
 
 tlic operations and telephone connections. The exchange 
 and exhibit is under the direction of Air. Henry W. 
 Pope. 
 
 The Automatic Electric Company combines with its 
 exhibit a service throughout the Electricity Building. 
 At convenient locations in the building and throughout 
 the offices of the department are located automatic tele- 
 phones. By this means the chief and superintendents 
 can keep in close communication with the stenographers, 
 assistants, clerks, ianitors and guards. 
 
 The Bell Telephone E.xchange, Palace of l-'.lrctiuit> 
 
 The exhibit includes two complete working automatic 
 exchanges of 10,000 type, each with 100 stations installed. 
 These two exchanges, now giving service throughout the 
 Electricity Building, are connected together by a system 
 of trunks, similar to that generally used in manual tele- 
 phone practice to connect branch exchanges to each 
 other and to the main exchange. The selection of 
 trunks, however, is done automatically, and not through 
 human agency, as is the case in manually-operated switch- 
 boards where a call originating in one exchange must 
 pass through the hands of two operators to secure con- 
 nection with a telephone in another; a method which, 
 since the number asked for must be repeated by the
 
 Electric a I H a it d b u o k 8f, 
 
 original to the secondary operator, of necessity- consumes 
 time. This method has the added disadvantages that it 
 offers double opportunity for errors to occur, and re- 
 quires that the subscriber's memf)ry be burdened by the 
 use of names prefixed to the numbers to designate va- 
 rious exchanges. The automatic system requires the use 
 of no name prefixes, and the subscriber need not be 
 aware that he is calling through more than one exchange, 
 since the director}- contains only numerical designations. 
 In all cases three or four rotations of the calling dial will 
 secure instantaneous and direct communication with the 
 telephone desired. 
 
 'J'he telephones exhibited are of three types, the wall, 
 the desk and the pedestal. This last may be used as a 
 substitute for a desk telephone. It is movable, like the 
 latter. l)ut instead of resting on the subscriber's desk it 
 stands beside it at his elbow. All of these telephones are 
 fitted with the regulation calling dial, a circular metal 
 piece, on whose periphery are ten finger holes numbered 
 from I to o. This dial is fixed on an axis at its centre, 
 and as the finger is placed consecutively in the holes 
 corresponding to the digits of the numbers desired, and 
 the dial turned once for each digit, electrical impulses are 
 conveyed to the switches at the central office, setting 
 them in operation and bringing through them the proper 
 connections. 
 
 A toll lioard of ten stations is also in service, demon- 
 strating the manner in which toll connections are given 
 to users of automatic telephones. The rest of the appa- 
 ratus disi)layed is of the same general character as that 
 which may be seen in connection with any ui)-to-date 
 telei)hone exchange, save the "tell-tale' board. This is 
 simply a device for the instantaneous location of trouble. 
 wherever it may arise, and consists of a number of lanqis 
 mounted on a slate slab together with a magneto bell. 
 In case of trouble tliis magneto liell rings, calling the 
 attention of the attendant, and a lamp glows, by the 
 position of which on the board, the location of the trouble 
 can be inst.antaneously ascertained and pronii)tl\' recti- 
 fied.
 
 86 
 
 The St. Louis 
 
 The Western Union 'J'elegraph Company's main 
 World's Fair office in the Electricity Building represents 
 a model, up-to-date working telegraph office. There are 
 three light oak sextette tables equipped with quadruplex, 
 duplex, repeaters, automatic Wheatstones, etc. There is 
 also a ticker service supplying New York stock quota- 
 tions and New York. Chicago and St. Louis grain reports. 
 Twenty-two wires leading from this office to the main 
 down-town office give direct connection with the larger 
 cities. Branch offices on the grounds are located at the 
 Inside Inn. New York State. Missouri State, Govern- 
 
 The Automatic I elephone Switchboard 
 
 ment, Mines and Metallurgy. Manufactures. Agricultural, 
 Admini-Stration, and Press Buildings, The Stadium. Phil- 
 ippine Village and in the Siberian R. R. Station on the 
 "Pike." These offices are connected with the Electricity 
 Building by loops, and placed on the different through 
 circuits. Add to these the three offices of the Asso- 
 ciated Press and the four commission houses in the 
 grounds, and it is apparent that visitors to the Fair 
 command telegraph facilities unexcelled. 
 
 A large globe above the main office of the Postal 
 Telegraph-Cable Company shows how. with its Pacific 
 and Atlantic cable connections, the company circles the
 
 Electrical Ha n d b o o k 8/ 
 
 earth. The equipment of this office is modern in every 
 particular and shows the standard types of apparatus 
 adopted by the Postal Company. At the rear of the 
 space there are six Holtzer-Cabot motor-generators, each 
 giving twenty-five amperes and forty volts for supplying 
 power. There is also a complete switchboard with all 
 the instruments and switches for regulation. Three 
 quadruplex sets are in operation. On the tables are bas- 
 ket resonators and typewriting machines. 
 
 The branch offices work through the common and 
 polar sides of these sets with the St. Louis offices, thus 
 making substantially two wires of every single one be- 
 tween the Fair and the city. 
 
 Branch offices throughout the grounds are located at 
 the Administration Building, Press Building, Inside Inn, 
 New York State Building, Manufactures, Mines and 
 Metallurgy, The Pike, Illinois State Building, the Agri- 
 cultural Palace, the Philippine Reservation and the Gov- 
 ernment Building. In this way visitors are accommo- 
 dated anywhere on the grounds. 
 
 Besides this, a money order department has been 
 established, and visitors who become unexpectedly 
 "broke" have found this service very convenient. 
 
 POWER FOR THE EXPOSITION 
 
 With the exception of a few isolated plants built for 
 private use by some of the individual concessionaires, all 
 the power required in the entire enclosure constituting 
 the Louisiana Purchase Exposition for lighting, pump- 
 ing and the operation of various motors, including the 
 Intramural Railway, is developed in Machinery Hall and 
 its annex, the Steam, Gas and Fuels Building. The 
 generating apparatus, although all housed in ]ilachinery 
 Hall, is divided into two separate power plants. One is 
 known as the Exhibitor's power plant, and is made up 
 entirely of apparatus entered as exhibits by more than 
 ninety engineering firms, including many of the leading 
 manufacturing concerns of the United States as well as 
 several from foreign countries. The total generating
 
 S8 
 
 The St. L oil i . 
 
 
 a> 0) ^ 
 ai i; o 
 
 S = 3 
 32 = 
 
 OS = 
 
 S - 
 
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 1-3 
 
 § 
 
 1 
 1 : 
 
 1 ' 
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 « 
 
 
 
 
 
 i 
 
 
 ^
 
 Electrical H a n d b o o k 8g 
 
 capacity of the Exhibitors" power plant amounts to 
 40,oco h.p.. with an output of about J5.OCO kw. of elec- 
 trical energy at normal load. 
 
 In addition to the plant supplied by exhibitors, there 
 is the Exposition power plant, made up of machinery 
 leased by the Exposition Company as a service plant for 
 furnishing power during the pre-Exposition period as 
 well as during the time the Fair is open. The Exposi- 
 tion power plant, which was furnished by the Westing- 
 house Companies, has a capacity of 8,000 kw. The 
 commanding size of the four large electrical generating 
 units, each of 2,000-kw. capacity, appeals to practically 
 all visitors to the Fair. These generators operate at 
 a speed of 83^ revolutions per minute and deliver a 
 25-cycle current at 6.600 volts. It is interesting to note 
 the advantage in floor space economy of direct-connected 
 generators. The space occupied by the smallest of the 
 belt-driven generating units at the Chicago exposition 
 was about 65 by 2~ feet, and the units at St. Louis, which 
 arc almost three times the capacity, are direct driven and 
 the over-all space occupied by each, including the 36 and 
 75 ''}■ 54-inch Westinghouse-Corliss vertical cross-com- 
 pound engines, is only about 55 by 15 feet and 2>-^2 feet 
 in height, the flywheel being 23 feet in diameter. 
 
 The total space devoted to the service electric plant 
 in Machinery Hall, with the exciter units, condensers, 
 cooling towers and 35-panel switchboard, is i6,26o square 
 feet. The entire plant was designed and equipped by 
 Westinghouse. Church, Kerr & Co.. and all the motive 
 power apparatus was furnished by the Westinghouse 
 Machine Company. 
 
 Power for I.\tr.\mlr.\i. K.\m.w.\v 
 
 The Intramural Railway plant constitutes one of the 
 systems of the Exhibitors' jiower plant. The generating 
 units for the Intramural are divided into two groups. 
 'i"he first consists of three steam engines and a water 
 wheel, each driving 550-volt, direct-current generators 
 furnished by the Crocker-Wheeler Company. The four
 
 pc 
 
 The St. Louis
 
 Electrical Ha n d b o o k Qi 
 
 generating units in question were furnished by the fol- 
 lowing exhibitors : — 
 
 The Lane & Bodley Company exhibits a 900-h.p. 
 cross-compound engine, with cylinders 20 and 40 inches 
 by 54-inch stroke, direct connected to a 600-kw. generator 
 making 85 rev. per min. 
 
 A 750-h.p. single-cylinder ]\Iurray-Corliss engine, 
 with 26-inch cylinder and 48-inch stroke, was furnished 
 by the Murray Iron Works, this being direct connected 
 to a 500-kw. generator operating at 100 rev. per min. 
 
 The other engine of the group is from the Harrisburg 
 Foundry and Machine Works. It is the Fleming type, 
 four-valve, tandem-compound, with cylinders 15 and 
 4oy2 inches with 26-inch stroke, with a reheater between 
 the high and low pressure cylinders, and running at 150 
 rev. per min. This engine is direct connected to a 400- 
 kw. generator. 
 
 A unique feature of this installation is a tangential 
 water wheel exhibited by the Abner Doble Company of 
 San Francisco. This wheel develops 160 h.p. at 700 rev. 
 per min. and is direct connected to a loo-kw. generator. 
 Water for driving the wheel is furnished at a pressure 
 of 300 pounds per square inch, by a triple expansion con- 
 densing pump from the Jeansville Iron Works. 
 
 The second group of the Intramural plant consists of 
 a 1,400-h.p. cross-compound Buckeye engine with cyl- 
 inders 26^ and 50 inches and 4S-inch stroke, direct con- 
 nected to a 900-kw. generator operating at 100 rev. per 
 min., together with two Brown-Corliss vertical cross- 
 compound engines, with cylinders 18 and 36 inches and 
 36-inch stroke, running at 135 rev. per min., each direct 
 connected to a 500-kw\ generator. All the generators of 
 this group were also furnished by the Crocker-Wheeler 
 Company. 
 
 The Wheeler Condenser and Engineering Company 
 furnished for this group an Admiralty type of surface 
 condenser with pumps complete. This condenser also 
 takes care of tiit e\haus<: steam from a Greenwald 600- 
 h.p. cross-compound engine, which is direct connected 
 to a Fort Wayne Electric Works 400-kw., 250-volt, direct-
 
 p^ T h c S f . L o u i s 
 
 current generator used on lighting load. The Green- 
 wald engine has cylinders i8 and 36 inches and 42-inch 
 stroke, and operates at 100 rev. per min. The Walker 
 Electric Company of Philadelphia furnished the complete 
 switchboard installation for the entire system. 
 
 The generation of power for the Intramural involves 
 no special engineering features except those arising from 
 the fact that power is secured from so many different 
 classes of units. The switchboard is a typical railway 
 board with the usual machine and feeder panels. Direct 
 current is generated at 550-575 volts and passes out over 
 aerial feeders. Inasmuch as the power plant is approxi- 
 mately in the centre of the Intramural line, which takes 
 the form of an irregular circular belt, the problem of 
 feeder distribution was a comparatively simple one, the 
 chief requirement being to provide sufficient carrying 
 capacity in copper for the heavy traffic anticipated. 
 
 Lighting and Power 
 
 The largest individual unit forms part of a three- 
 phase, 25-cycle, 6,600-volt system situated in the central 
 block of r^Iachinery Hall. This consists of an Allis- 
 Chalmers 5,000-h.p. vertical and horizontal compound 
 engine, direct connected to a Bullock 3,500-kw. alter- 
 nator: the engine is of the Manhattan type with hori- 
 zontal high pressure cylinder and vertical low pressure 
 cylinder, both working on the same crank ; the cylinders 
 are 44 and 94 inches in diameter, stroke 60-inch and rev. 
 per min. 75. The exhaust steam is taken care of by a 
 barometric tube condenser furnished by the Alberger 
 Condenser Company. A vertical All)erger engine drives 
 both the vacuum and circulating pumps, the latter being 
 a rotary pump made by the Connersville Blower Com- 
 pany. That part of the water required for boiler feed is 
 delivered to the cold wells by a De Laval motor-driven 
 centrifugal pump. 
 
 A. L. Ide & Sons installed a 300-h.p. Ideal engine, 
 direct connected to a Bullock 200-kw., 250-volt, direct- 
 current generator, part ol the current produced being
 
 Electrical Ha ii </ b o o k 
 
 93 
 
 used for exciting tlie 3.500-k\v. alternator, the remainder 
 passing through a Bullock balancer and being used for 
 driving the variable speed motors of machine tools 
 shown by various exhibitors in Machinery Hall. 
 
 The next system is one delivering a three-phase. 25- 
 cycle, 6,600-volt current. It consists of a 1.500-h.p. 
 Rateau turbine direct connected to a Bullock i,ooo-k\v. 
 alternator making 1,500 rev. per min., and a 2,250-h.p. 
 vertical cross-compound engine with cylinders 34 and 68 
 inches by 54 inches direct connected to a National Elec- 
 
 \\ illan>-.St;in1ey I 'nit for .\rc I.ightiiiK 
 
 trie i,5C0-kw. alternator operating at S^ rev. per min. 
 Both the turbine and vertical engine are exhibited by the 
 Hooven-Owens-Rent.schler Company of Hamilton, Ohio. 
 The Stilwell-Bierce & Smith-Vaile Company of Day- 
 ton. ()lii<), furnished two condensers with pumps; one 
 for the turbine, designed to maintain a vacuum of 28 
 inches, and the other, for vertical engine, to carry a 
 vacuum of 26 inches. 
 
 In connection with the arc lighting system there is a 
 comj)lete installation consisting of boilers, engines, con- 
 denser and pmnps from the Societe .-Knonyme des Etab- 
 lisscments Delaunay P>elle\ille, of Paris, with a generator
 
 -p^ T h c S t . L o 11 { s 
 
 from the Societe I'Eclairage Electrique, also of Paris; a 
 complete installation of engine, condenser, pumps and 
 generator from the Societe Alsacienne de Construction 
 Mecaniques, of Mulhouse, Germany, and Belfort, France; 
 also a complete engine installation made hy the engineer- 
 ing firm of C. H. Bradley Jr. & Co.. of Pittsburg, 'ilie 
 Belleville exhibit consists of three marine type boilers of 
 500 h.p. each, a 1,500-h.p. engine, a condensor com- 
 plete with pumps, and a i,ooo-kw., 2,400-volt, three- 
 phase, 50-cycle alternator. The ^Nlulhouse engine is of 
 the horizontal tandem-compound type, with cylinders 
 600 mm. and 1. 100 mm. in diameter and stroke 1.300 mm., 
 developing i.ooo h.p. at 94 rev. per min. The generator 
 from the Belfort branch of the same company is of 700 
 kw. capacit)% and delivers a 2,300-volt, three-phase. 50- 
 cycle current. 
 
 The Bradley installation consists of a i.ooo-h.p. 
 Willans central valve engine, direct connected to a Stan- 
 ley 600-kw., three-phase. 6o-cycIe, 2,300-volt alternator; 
 a 50-h.p. Willans engine direct connected to a Northern 
 Electric 30-kw., iio-volt, direct-current generator; a 
 Worthington surface condenser with Worthington cir- 
 culating pump driven by a Northern Electric 25-h.p. 
 motor, and a Blake twin air pump. 
 
 The General Electric Company is exhibiting a 2,000- 
 kw. Curtis turbo set complete, the condenser and pumps 
 ])eing supplied by H. R. Worthington of New York. 
 This turbine will operate at 750 rev. per min. and has a 
 capacity for short periods of 100 per cent, overload; the 
 current delivered will be three-phase. 25-cycle, 6,600 
 volts. 
 
 Greenwood & Batley. of Leeds. England, are exhibit- 
 ing a De Laval turbine of 225 h.p.. operating generators 
 nf 150 kw. capacity, 500-volt. direct current. The gen- 
 erators are four-pole type, two in number. 
 
 The Bufifalo Forge Company is operating a 175-h.p. 
 horizontal tandem-compound engine, direct connected to 
 a Stanley 132-kw.. 2.400-volt, two-phase, 60-cycle alter- 
 nator, for which the Northern Electrical ^^lanufacturing 
 Company furnished the exciting set.
 
 Electrical Handbook g^ 
 
 The Skinner Engine Company furnished a 200-h.p. 
 engine, direct connected to a Warren i50-k\v.. 2,300- 
 volt, single-phase, 6o-cycle alternator, the Wagner Elec- 
 tric Manufacturing Company providing the exciting set. 
 The American Engine Company has a 200-h.p. engine, 
 direct connected to a i25-k\v., iio-volt, direct-current 
 generator of its own make. Above the power plant are 
 two electric cranes for erecting and dismantling the ma- 
 chinery. The Shaw Electric Crane Company installed 
 a 60-ton electric traveling crane, and Pawling & Har- 
 nischfeger a 50-ton electric traveling crane, with lo-ton 
 auxiliary hoist. 
 
 Ste.\m, G.\s .\nd Fuels Buildixg 
 
 A separate fireproof building is provided for the in- 
 stallation of boilers, gas generating plants, briquette ma- 
 chinerj' and other apparatus for use in connection with 
 boilers and fuels. Steam is furnished to the contract 
 jilant by sixteen Babcock & Wilcox boilers, set in two 
 groups of eight units each. Each grou.j) is provided with 
 a short steel stack and induced draft i)roduced by twelve- 
 bladed steel plate fans fourteen feet in diameter and six 
 feet wide, two fans to each stack, direct connected to 
 small horizontal Buffalo Forge Company engines. The 
 plant has its own boiler-feed pumps, which take the 
 water fmm the city mains through a large Cochrane 
 ()])en heater and senfl it tn tlu- boilers. The Babcock & 
 Wilcox boilers have a total heating surface of 5,028 
 square feet, and are served by Roney stokers. The me- 
 chanical draft system is controlled by a regulating valve 
 which varies the speed of the fan to meet the fluctuations 
 of pressure. 
 
 There are four cooling towers, each consisting of a 
 rectangular brick stack 52 feet in height, containing ten 
 tiers of wooden gratings, occupying 20 feet of the height. 
 A space of i2'/4 feet below the gratings provides for the 
 fans, and a space of 20 feet above the gratings conveys 
 the vapor above the roofs of the adjacent buildings. 
 Draft is supplied to each tower by four 120-inch Seymour
 
 ■96 
 
 T li c St. L o H is 
 
 fans, arranged in two ])airs. each driven by a single 
 shaft. All sixteen fans are belted to a jackshaft with a 
 Neptune waterproof belt. The jackshaft is carried by 
 brackets attached to the building wall and driven by an 
 i8 and 20 by 16-inch Westinghouse standard coni])ound 
 engine, the strain of the main belt being taken up by a 
 structural steel tower built independent of the main wall. 
 Injection water for the condensers and water for the 
 cooling towers is handled by a battery of three 24-inch 
 Worthington turbine centrifugal pumps, one being 
 
 
 Constant Cm rent Transformers 
 
 normally used for the two condensers and one for the 
 towers, while the third is held in reserve. These pumps 
 are driven by 18 and 30 by 16-inch Westinghouse en- 
 gines and operate under a head of 43 feet, including 
 suction. Each unit has a capacity of 17,000 gallons per 
 minute. The governors may be adjusted while the en- 
 gines are running, by means of hand-wheels at the ends 
 of the engine shafts, so that the water circulated may be 
 proportioned to the load. The Exhibitors' boiler plant 
 has a rated capacity of more than 15,000 Rh.p., this 
 being provided by a number of different varieties, but all 
 of the water-tube type, ihe largest installation is that
 
 Electrical Ha ii d b o o I: 
 
 97 
 
 made bj- the Aultman & Taylor Machinery Co., which 
 furnished sixteen horizontal and three vertical Cahall 
 boilers with a total rating of over 8.000 h.p. The hori- 
 zontal boilers are installed in batteries of two each ; two 
 of these batteries are designed for a steam pressure of 
 225 pounds per square inch and supply steam for the 
 operation of the turbines, the steam being delivered at 
 throttles with pressure of 185 pounds. The remaining 
 boilers carry .steam at 175 pounds per square inch, this 
 
 •~ i itmirt ii ft i 
 
 ^ 
 
 600 h.p. Steam Turbine 
 
 being delivered to engines in Machinery Hail at 150 
 pounds. 
 
 The Aultman & Taylor Company i)rovided chain- 
 grate stokers in connection with all Cahall boilers. The 
 Heine Safety Boiler Company has an installation con- 
 sisting of eight 400-h.p. Heine boilers, for which the 
 Green Engineering Company provided the mechanical 
 stokers. 'J"he boilers provided by the Belleville Com- 
 pany of Paris, to furnish steam for the Belleville engine, 
 are three in number, of the Belleville marine type. J. & 
 A. Niclausse, of Paris, are exhi1)iting two of their ma- 
 rine boilers, each of about 400 h.p. Tlu' Buffalo Forge
 
 98 
 
 The St. Louis 
 
 Company furnished a complete induced draft installation 
 for all the last mentioned boiler exhibits. 
 
 The Clonbrock Steam Boiler Company provided two 
 Climax boilers, marine type, one of 300 and the other of 
 
 Entrance to Service Plant 
 
 250 h.p. ; the Dusseldorf-Ratinger-Rohrenkesselfabrik 
 (formerly Durr & Co.), of Dusseldorf, Germany, a 500- 
 h.p. marine type boiler; and the Schuette-Kessel-Kon- 
 sortium, of Geestemuende, German3% a 500-h.p. Conti 
 marine boiler.
 
 Electrical Handbook 
 
 99
 
 loo The St. Lou is 
 
 ARRANGEMENT OF ELECTRICAL EXHIBFrS IN 
 THE PALACE OF ELEC'iRICITY 
 
 The exhibits in the Palace of Electricity have been 
 secured and arranged under the direction of W. E. 
 Goldsborough, chief of the Electrical Department. 
 
 The accompanying ground plan indicates the manner 
 in which the aisles and sections have been laid out in 
 the building. All the exhibit space is on the ground 
 floor, with ample head room ; in fact, over the centre 
 sections the roof is eighty feet above the floor. Over 
 blocks I and 2 is a gallery 22 feet wide by 250 feet 
 in length, which is divided and furnished as offices 
 for the department, jury, committee and the Exposi- 
 tion Electricity Club rooms. Beneath the gallery are 
 the main offices of the Postal and Western Union Tele- 
 graph companies, through which the news is sent from 
 the exposition, and also the booths of the technical press. 
 High-speed telegraph systems are shown in operation by 
 Patrick B. Delany and Walter P. Phillips, while a trans- 
 mitting typewriter applied to telegraph work is exhibited 
 by Charles E. Yetman. The Gray telautograph, or writ- 
 ing telegraph, reproducing at a distance drawings or 
 writings, also exhibited here, is a very ingenious appli- 
 cation of electricit}' to the transmission of intelligence. 
 
 A fine collection of electrotherapeutic exhibits occu- 
 pies the eastern end of block 4. Near the centre of this 
 block is located the substation that contains the trans- 
 formers, switchboards and rotarj' converters through 
 which the high potential alternating current is received 
 from the service power plant and transformed to a lower 
 voltage or converted into direct current for distribution 
 through the building. This machinery was furnished 
 largely by the General Electric and Westinghouse Elec- 
 tric and Manufacturing companies. Adjoining the sta- 
 tion the latter company has one of the largest exhibits in 
 the building, embracing varied types of electrical machin- 
 ery and apparatus. Across aisle B are the electric rail- 
 way trucks and locomotives of Burnham, Williams & Co. 
 Along the north side of block 3 the Standard I'ndcr-
 
 Electrical Handbook 
 
 lOI 
 
 ground Cable Company and the McRoy Clay Works have 
 installed a model conduit system, such as is used in the 
 best city construction, showing the method of placing 
 cables in conduits. A vcr} conspicuous object is a 
 Burdett-Rovvntree electric dumb waiter running from the 
 floor to the roof above the block. Its operation is auto- 
 matic, starting or stopping in response to a push button. 
 Over blocks 3 to 17, along the west side of the build- 
 ing, is the craneway with a span of 57 feet sVi inches. 
 
 Turbo-tienerator Rotor 
 
 Upon this is a four-motor, 30-ton electric traveling crane, 
 furnished by Pawling & Harnischfeger. A 20-h.p., 
 220-volt motor gives a horizontal speed of 250 feet per 
 minute; an 8-h.p. motor gives a trolley transverse speed 
 of 150 feet. The main hoist is equipped with a 30-h.p. 
 motor with a speed of 25 feet, and the auxiliary hoist 
 with a 15-h.p. motor, and has a travel of from 30 to go 
 feet per minute. The crane has pmved very serviceable 
 in the installation of exhibits, and will be used in hand- 
 ling heavy machinery when exhibits are dismantled. 
 With one exception the heavy exhibits arc installed 
 under or adjf)ining the craneway. 
 
 In the northwest quarter of the building are several
 
 J 0.2 T h e S t . L u i s 
 
 displays of electric-railway equipment. The Westing- 
 house single-phase railway system and the electric air- 
 brake apparatus of the National Electric Company are 
 shown. 
 
 Block 9 is equally divided between the Fort Wayne 
 Electric Works and the Wagner Electric Manufacturing 
 Company, both having working exhibits. The Fort 
 Wayne display consists of a line of direct-current ma- 
 chiner\'. transformers, fan motors, wattmeters and a 
 series arc-light system. The Wagner space contains a 
 variety of single-phase alternating current power-motors 
 running under different conditions ; motor-generator sets 
 charging a storage battery, static transformers and indi- 
 cating switchboard instruments. 
 
 The remaining space adjoining the court is occupied 
 by the Bullock Electric Company, and contains one of 
 the notable machinery exhibits. Power at 6,6oo volts 
 alternating is received and transformed to 340 volts for 
 a rotary converter to supply 500 volts direct current for 
 operating street railway apparatus. Other motor-gen- 
 erators and balancing sets furnish current for the multi- 
 voltage system, as applied to speed control of machine 
 tools. 
 
 In section 14 the Northern Electrical Manufacturing 
 Company has a most complete demonstration of the 
 adaptation of the electric motor to many forms of indus- 
 trial machines. In this exhibit the manufacturing of 
 motor parts is carried on to show the convenience and 
 increased efficiency of motor drive for tools. 
 
 All of block 17, under the craneway, is taken up by 
 the Western Electric Company. Near its centre is a 
 large lOO-kw. motor-generator set, which, with a com- 
 pensator, furnishes no and 220-volt direct current 
 throughout the exhibit. There are several direct-con- 
 nected marine sets, transformers and regulating appa- 
 ratus. On the opposite side is a series alternating arc 
 light equipment with ornamental lamps and stands. 
 
 There are two collective exhibits, one supervised by 
 the Wesco Supply Company of St. Louis, in block 8, and 
 another by the Ewing-]\Ierkle Company of St. Louis in
 
 Electrical Handbook 
 
 103 
 
 block 14. In the former a large Warren synchronous 
 motor drives a Triumph generator supplying power for 
 the motors and apparatus in operation. In the second 
 exhibit the Commercial Electric Company has a number 
 of direct-current motors of from i^ to 35 li.p., and a 
 30-k\v., three-bearing generator, direct connected to a 
 gas engine, furnishes power to these items. 
 
 The western entrance embraces two large spaces, 
 \\hich are occupied by iuii(|ue exhibits. Morris & Palt- 
 
 Historical Collection of Incandescent Lamps 
 
 ridge show stereopticons, lanterns, projectors and auto- 
 matic electric curtain-hoists in operation. O])posite is 
 the electroplating exhibit of the Jlall Gold and Silver 
 Plating Works. The different processes of plating and 
 finishing of plated wares are shown in a most attractive 
 manner. 
 
 The Mould Storage Battery and Gould Coupler Com- 
 l)anies h;i\e a fine combination exhibit in section 16, 
 which will include motor-generator sets and rotary trans- 
 formers, arranged so that many ingenious applications of 
 l)atterics to different lines of work can be illustrated. 
 An interesting item is a motor-(lri\ en unipolar dynamo,
 
 104 
 
 The St. L u is 
 
 charging two immense cells at from 3,000 to 5,000 am- 
 peres at about five volts. 
 
 The northern half of block 16 is devoted to the ar- 
 tistic exhibit of Japan, 'iliis electrical apparatus was 
 designed and made by Japanese, most of whom received 
 their education and training in this country. 
 
 The Italian space, occupying block 18, is especially 
 worthy of notice on account of the scientific and elec- 
 trical measuring instruments it contains. 
 
 A model central station storage liattery plant, in a 
 
 Edison Historical Exhibit 
 
 fire and acid-proof enclosure, is shown by the Electric 
 Storage Battery Company. A conspicuous feature is an 
 immense map of the United States, showing the location 
 of between 1,600 and 1,700 plants installed by this com- 
 pany, the railway, lighting, telephone and isolated instal- 
 lations being indicated by dififerent colored lamps. 
 
 In section 19, three 75-foot towers by the De Forest 
 Wireless Telegraph Company support the antennae from 
 which wireless messages are sent and received from 
 other stations in the building and to the large station in 
 the Model City. Within the same block is the exhibit of 
 the American Electric and Novelty Manufacturing Com-
 
 Electrical Hand b o o k 
 
 ^05 
 
 pany, the booth being conspicuous from the Hghting 
 effects of 600 colored lamps. 
 
 Two telephone operating exchanges are located in the 
 south side of the building, both enclosed by handsome 
 booth';. I'hat ]iart of block 17 not covered by the crane 
 is occujjied by the exchange of the American Telephone 
 
 lllltchi^oll \\ 11 ele>> I'clcljliouc, Cuiiit I'alacc of I'llectricily 
 
 and Telegraph Company. 'I'his connects with the local 
 and long-distance lines of the Bell Company, so that 
 there is direct communication from the building to all 
 parts of the grounds and city and all points reached by 
 telephone lines. In block 24, the exchange of the Kel- 
 logg Switchboard and Sui)])ly Company gives a similar
 
 io6 
 
 The St. Louis 
 
 service through its connection with the Kinloch sj'stem 
 of St. Louis. Recent developments in automatic and 
 semi-automatic telephone systems are shown in a thor- 
 ough manner by the Automatic Electric and the Faller 
 Automatic Telephone Exchange companies, and an in- 
 structive historical collection of telephone apparatus is 
 shown by H. F. Wasson in block 25. 
 
 The Hutchison Acoustic Company exhibits the 
 "dcousticon" and "massacon," giving daily exhibitions 
 of deaf mutes being made to hear and taught to speak 
 
 10,000 h.p. Generator and Oil lireak Switches 
 
 through their instrumentality. M. R. Hutchison also 
 demonstrates a wonderful adaptation of the wireless tele- 
 phone. Around the court of the Electricity Building is 
 a circuit of wires connected to a booth in block 21. Be- 
 fore a telephone transmitter in the booth music will l)c 
 played. In the court no sound of this is heard until a 
 pocket telephone receiver, without an}' wire connection, 
 is placed to the ear, and then the music becomes audible. 
 At any point in the court music can be heard by the aid 
 of the receiver. 
 
 Two beautiful booths in block 25 are those of the 
 Holophane Glass Company and the Weston Electric In- 
 strument Company, the latter showing a full line of
 
 Electrical Handbook lo/ 
 
 standardized electrical instruments. The brilliant illu- 
 mination of the Holophane exhibit is most conspicuous, 
 as I, GOO incandescent lamps cover the exterior and inte- 
 rior of the handsome structure. 
 
 The laboratories of the National Bureau of Standards, 
 covering a space of 2;^ by 200 feet, contain over $50,000 
 worth of instruments for testing every kind of electrical 
 machine and apparatus. About twenty Government ex- 
 perts are connected with the laboratories to conduct tests 
 and investigations. No preceding exposition has ever 
 had such facilities for making complete records or for 
 assisting the juries in making their awards. 
 
 The largest individual exhibit is that of the General 
 Electric Company, embracing block 28, and covering a. 
 quarter of an acre of floor space. The great variety of- 
 electrical apparatus manufactured by this company is 
 shown in operation. The Edison exhibits are in blocks 
 26 and 27, and include the iron-nickel storage battery and 
 a historical collection of great merit. 
 
 SPECIAL EXHIBITS 
 
 The special exhibits showing the great progress since 
 the Columbian Exposition are chiefly in the Palace of 
 Electricity, where they are classified under five groups : 
 machines for generating and using electricity, electro- 
 chemistry, electric lighting, telegraphy and telephony 
 and the various other applications of electricity. The 
 large generators, direct connected to engines, are placed 
 in the Palace of Machinery on account of the proximity 
 to the boiler house. Among the prime movers the Cur- 
 tis steam turbine with an electric generator designed in 
 connection therewith represents a recent development. 
 The General Electric Company exhibits a 3,000-h.p. 
 turbo-alternator unit consisting of a Curtis steam tur- 
 bine direct connected to an alternating current generator. 
 'I'he condenser for the turbine is in the base of the ma- 
 chine and thus the entire outfit occupies the smallest pos- 
 sible amount of floor si)acc, not more than ordinarily 
 required for a generator. In power station e(|uipment
 
 f()8 The S f . L o It is 
 
 Soo,ooo-Volt Transformer
 
 Electrical H a ii d h o o h lop 
 
 the exhibits consist of very comprehensive lines of 
 switchboards, with instruments and switches of types 
 which are all of recent development. This is especially 
 true of the oil break switches, which will safely break a 
 circuit of 60,000 volts. 
 
 The distribution of power over long distances is one 
 of the most important fields of usefulness for electricity. 
 Jo do this economically very high potential currents are 
 necessary. While ten years ago 10,000 volts was consid- 
 ered excessive, to-day lines of 50,000 volts potential are 
 in commercial service. Even this is not the limit, for 
 experiments arc still being carried on and some of the 
 most fruitful will doubtless be those at the World's Fair. 
 
 C. H. Thordarson has in operation a transformer 
 which raises the potential from 120 to 500.000 volts. It 
 has a regulator in the primary circuit which gives a sec- 
 ondary potential from zero to 504,000 volts. A series of 
 alternating current induction experiments are being 
 made with 60 and i20-c\'cle current. The transformer 
 has a maximum capacity of 20 kw. and is primarily in- 
 tended for testing and laboratorj' purposes. 
 
 The successful production of a single-phase alternat- 
 ing current motor constitutes one of the most important 
 electrical developments of the past two years. The pos- 
 sibilities for the application of electricity to broader 
 fields of railway service opened up by this achievement 
 are not easily realized. The Westinghouse exhibit will 
 contain two such motors mounted and in operation on a 
 truck, with induction regulators, a large auto trans- 
 former, air operated switches, a master controller, and 
 the usual air brake cciuipment. 
 
 'i'he single-phase railway system, as illustrated in the 
 Westinghouse exhibit, is not revolutionary, but simply 
 an improvement over the old. I'or example : — With an 
 existing direct current .system it is possible to use the 
 same generators and the same line and transformers, 
 changing only the e(|uipment of the cars. Moreover, 
 cars e(iuip])ed with alternating current motors can be 
 operated over districts in which the cars are operated 
 with direct current motors.
 
 no 
 
 The St. L H i s 
 
 The mercury arc rectifier is shown in operation. In 
 the General Electric exhibit it is receiving an alternating 
 current which is converted into a direct current driving 
 a 714-h.p. motor. 
 
 One of the features of the lighting exhibits is the 
 display of Cooper-Hewitt mercury vapor lamps in the 
 Palace of Electricity. About two dozen tubes are used 
 for the illumination of the Westinghouse exhibit service 
 plant and for a special demonstration in the Westing- 
 house auditorium. Over the auditorium \\<v]i is a mer- 
 
 \\ c.-.liiiy:liiju>c-rai>uiis .-^tcaiii Turbine 
 
 cury vapor tube eight feet long ; and in the Palace of 
 Electricity, in the Westinghouse exhibit, is a tube of 
 similar size. The Cooper-Hewitt lamp is used by the 
 Official Photographic Company for portrait work in its 
 booths on the Plaza, by the Official Pass photographers 
 for all pass portraits taken on the grounds and in the 
 postal photo booths in the Tyrolean Alps. In the West- 
 inghouse auditorium three exhibitions are given daily of 
 an interesting series of biograph and mutoscope pictures 
 of scenes in and around the Westinghouse works in 
 Pittsburg, in which are included the first interior moving 
 pictures ever taken. These pictures were obtained by
 
 Electrical Handbook iii 
 
 means of the Cooper-Hewitt lamp and are the most 
 striking demonstrations that have j'et been made of the 
 lamp's actinic efficiency. By its use it was possible to 
 take pictures at a speed of 900 a minute, or 15 a second, 
 in the blackest forge rooms and foundries. 
 
 It is asserted that actual tests have shown this lamp 
 to be less fatiguing to the eyes than any other artificial 
 light ; that it is the most economical light, and that its 
 absoluteh' even illumination makes it particularly pleas- 
 ing to draftsmen, machinists and stenographers, and in 
 all places where the question of color does not come into 
 consideration. The Cooper-Hewitt lamp is simple in 
 construction, with no mechanism to get out of order and 
 no carbons to trim or replace. The lamps are shown on 
 exhibition as designed for use for general illumination, 
 photography and photo-engraving, with simple printing 
 outfits for photographers. In many of the Pike shows 
 the lamps are used for illumination in places where their 
 peculiar greenish light affords entertainment and amuse- 
 ment. 
 
 The General Electric Company also exhibits mercury 
 vapor arc lamps, which are here shown for the first time 
 in any exposition ; also a new arc lamp, using magnetite 
 instead of carbon. This lamp has a very marked in- 
 crease in efficiency over the carbon burning lamps, and 
 is especially suitable for street lighting. It is also worthy 
 of note that the entire system of arc lighting used by the 
 Exposition has lx?en developed since the World's Fair 
 at Chicago. This is known as the series alternating 
 street lighting .system, using enclosed arc lamps for 
 lighting the interior of the buildings, the outlying parts 
 of the grounds and the Pike. 
 
 The first public exhibition of Nernst lamps in any 
 considerable number was at the Pan-American Exposi- 
 tion in 1901. To-day the new lamp is an important fea- 
 ture in the lighting of the Exposition. The most impor- 
 tant installation of Nernst lamps is in the Fine Arts 
 Building, where over 6,000 glowers are used. For this 
 purpose the pure white light of the Nernst lamp has ef- 
 fectively solved the problem of the illumination of the
 
 112 
 
 T h c St. L o II I s 
 
 works of art. The Westinghousc exhibits in the Palaces 
 of Electricity, Machinery and Transportation are all 
 brilliantly lighted by the Nernst lamp, and special dem- 
 onstrations of its strength are given daily in the West- 
 inghouse auditorium by comparison with incandescent 
 light globes. The handsome Illinois State Building is 
 lighted by Nernst lamps and the National Cash Register 
 Company uses them in its various exhibits. 
 
 The peculiar advantages claimed for the Nernst 
 lamps may be summarized briefly as high efficiency. 
 
 Xernst and Cooper-IIewitt Lamps 
 
 beautiful quality and perfect distribution of light, absence 
 of shadows of the lamp itself, its steadiness, and the fact 
 that the glassware is removable for cleaning, as there is 
 no vacuum. It is but slightly affected in candle power 
 by variations in the line voltage and is free from notice- 
 able pulsations, even on alternating circuits of low fre- 
 quency. 
 
 The exhibit of the Cnited States Incandescent Lamp 
 Company is located in the southwest corner of the build- 
 ing. In the space occupied by this company can be seen 
 the various steps and processes in the manufacture of an 
 incandescent lamp, 'i'hese are carried on in such a man-
 
 E I c c t r i col H a ii d b o o k 
 
 1^3 
 
 ner that, starting with tlie squirting of the filament, one 
 can see, by walking entirely around the exhibit, each step 
 in the proper order. 
 
 The De Forest Wireless Telegraph Company has ex- 
 tensive exhibits in the Electricity and Government Build- 
 ings, including a 300-ft. tower and a 250-ft. mast for 
 sending commercial messages to Springfield and Chicago. 
 E.xhibits are also made by Marconi and Ducretet. 
 
 The exhibit of a radiophone transmitting and receiv- 
 ing station, made jointly by the American Telephone and 
 
 Westinghouse Theatre Lighted by Xernst Lamps 
 
 Telegraph Company and the General Electric Company, 
 is proving one of the most attractive exhibits in the Pal- 
 ace of Electricity. The radiophone is a combination of 
 an arc light, reflectors, and a selenium cell. By these 
 means speech is transmitted to distant points without the 
 use of wires or other such intervening medium, the trans- 
 lation taking place by a beam of light furnished by the 
 arc. and projected in a slender beam by a parabolic re- 
 flector. 
 
 In the court of the Electricity Building the Electra 
 Water Purifier Company is exhibiting the Kune process 
 of purifying water by electricity, for commercial pur-
 
 114 
 
 T he St. L II i 
 
 poses. The electric purifier has a capacity of 500 gallons 
 of purified water per hour, the power consumption being 
 15 amperes at 15 volts. 
 
 On the map of the grounds, between pages 48-49, the 
 
 numerals indicatr sniiu- iirincipal jjoints of engineering 
 
 The Radiophone I^eceiving Station 
 
 interest. No. i locates Festival Hall, which has the larg- 
 est dome in the world, 144.50 feet in diameter; top of 
 dome 274 feet above the Grand Basin. In the audito- 
 rium of Festival Hall concerts of all descriptions will be 
 given during the Eposition. No. 2 shows the Cascade 
 pumping station, which is located under the east cascade 
 and contains three 2.000-h.p. induction motors, direct
 
 E I c c t r i c a I II a ii d b o o k 
 
 115 
 
 connected to centrifugal pumps, each set having a capac- 
 ity of 30,000 gal. a minute, working against a head of 100 
 feet. No. 3 indicates the power plant. Machinery Hall, 
 which includes excellent examples of every kind of prime 
 mover connected to generators of all types. The largest 
 item is the Bullock-Allis-Chalmers 3,500-kw. engine- 
 generator. The Steam, Gas and Fuels Building is lo- 
 cated by No. 4. This building, constructed of cinder 
 concrete, contains a large installation of Babcock & 
 Wilcox boilers, in addition to a large number of other 
 
 The I'irst I^lectric Locomotive 
 
 boilers, both foreign ;uid domestic, (las generating aj)- 
 paratus is also being exhibited in tlu' west end. 
 
 No. 3 shows the \)v l'"oresl wireless telegraph ma.st, 
 which forms a i)art of the high-i)ower, long distance 
 transmitting and receiving station of the De Forest 
 Wireless Telegraph Companj'. It consists of a single 
 mast 2CO feet high, with a 50-foot outrigger at the top, 
 from which hang the aerial wires. The Ferris Wheel 
 (No. 6) was the mechanical wonder of the World's Co- 
 lumbian Exposition of 1H93. No. 7 locates the German 
 outdoor railway exhibit, which consists of several thou- 
 sand feet of track, etpiipped with operating, signaling.
 
 ii6 
 
 The St. L o II i . 
 
 and block devices in use on the government railroads of 
 Germany. 
 
 Pennsylvania locomotive testing laboratory (No. 8) 
 is equipped for working tests on locomotives of any size 
 or type. A most comprehensive series of tests will be 
 made during the Exposition. The locomotive drivers are 
 supported by wheels attached to water brakes, while the 
 
 Wireless Telegraph Tower 
 
 drawbar pull is measured by a delicate yet very powerful 
 dynamometer. Outdoor mining exhibit (No. 9), in the 
 gulch south of the ]\Iines and Metallurgy Building, 
 shows working mines, stamp mills, concentrators, etc. 
 
 De Forest observation tower (No. 10) is a steel struc- 
 ture 300 feet high. In addition to being equipped with 
 a complete De Forest wireless telegraph installation, it is 
 provided with electric express elevators, by means of 
 which visitors can ascend to the platform at the top, from 
 which a view of the Exposition and St. Louis can be
 
 Electrical Ha n d b o o k 117 
 
 obtained. No. 11 locates the general offices of the Elec- 
 trical Department, also offices of the telegraph companies 
 and technical press. The electric raihvaj- test track (No. 
 12) is a stretch of track located north of the Transpor- 
 tation and \'aried Industries Buildings, equipped for 
 making tests upon electric railway equipment of both 
 direct and alternating type. 
 
 NEW APPLICATIONS OF ELECTRIC MOTORS 
 ENHIBITED 
 
 The use of electric motors for all power purposes has 
 expanded so rapidly that it has been difficult even for 
 those directly interested to keep in touch with the latest 
 developments. The ingenious application'^ of motors to 
 tools and machinery resulted mainly from the efforts of 
 electrical engineers and manufacturers, and, until re- 
 cently, this has been done without the co-operation of 
 tool makers. Objections were raised to changing designs 
 and patterns so that the motors might be most advan- 
 tageously placed for driving purposes. Later with chain. 
 gear or direct connection, the driving power was so in- 
 creased that the machinery had to be altered and 
 strengthened, and in this way the motors have become 
 more nearly an integral part of the tools. In the Elec- 
 tricity Building the electrical manufacturers are exhib- 
 iting the most recent adaptation of their motors to tools 
 and machines. Wherever power is required, whether it 
 be for a sewing machine or for pumps taking 2,000 h.p., 
 the motors have been perfectly designed for their work. 
 In fact, it might be said the display of electrical appa- 
 ratus is in all parts of the Exposition ; for the work, 
 whether in the exhibit palaces, the mining gulch, the 
 cascades or on the Pike, is done by means of electric 
 motors. The widening adaptation of electric motors to 
 every kind of tool developed such varying condi- 
 tion.s that the electrical engineer had to make the motor 
 a mo.st versatile machine. Examples of machine tools 
 driven by electric motors may be found in the local shops 
 of any industrial centre, but a number of new ideas in
 
 /7c 
 
 The St. L 
 
 motor drive have been recently developed, and advan- 
 tage has been taken of the World's Fair to show inge- 
 nious adaptations of motive power. 
 
 The line of motor-driven machine tools exhibited by 
 James Clark Jr. & Company represents a new departure 
 in the application of motors to machine tool drive. In- 
 stead of attaching a motor to a machine through a com- 
 bination of belts, gearing or speed boxes, a special va- 
 riable speed motor is embodied in the design of the 
 
 De Forest Wireless Telegraph .\pparatus 
 
 machine itself. The symmetrical appearance and ease 
 of operation fully demonstrates the advanced step in 
 machine tool design taken hy the makers of these ma- 
 chines. The location of the driving motor on the head 
 of a radial drill allows the power to be applied direct to 
 the spindle without loss ; it is simple and compact as can 
 be made and all parts needing attention are accessible for 
 examination and adjustment. The motor frame is cast 
 into the head of the machine and is directly geared to the 
 spindle. It has a multipolar field, iron clad armature, 
 self-feeding carbon brushes and self-oiling bearings. It 
 is made with two commutators in order to get a wide
 
 Electrical H a it d b o o k up 
 
 speed regulation with high efficiency on any speed. The 
 motor has nine speeds, which, in connection with the back 
 gears, give eighteen spindle speeds, from 14 to 250 rev. 
 per niin. in geometrical progression. 
 
 A small electric breast drill is another product of this 
 company. The tool is designed for drilling many small 
 holes in large pieces, replacing hand or small pneumatic 
 drills. Power can be applied wherever there is an in- 
 candescent lamp socket. There are two sizes wound 
 either for no or 220 volt-^, direct current. No. i will 
 drill holes in iron up to -'s inch diameter and requires % 
 h.p. The drill weighs fifteen pounds. No. 2 takes one- 
 si.xth h.p., weighs twenty-two pounds and will drill a hole 
 ^4 inch in diameter. All of these motor drills are in full 
 operation in the southwest corner of the Electricity 
 Building. 
 
 In the past the planer has been one of the least effi- 
 cient metal working tools. With the belt drive only a 
 single cutting speed has been provided, this speed in 
 general being too low for cutting cast iron at maximum 
 efficiency and too high for cutting steel without very 
 rapid depreciation of the tool. With the motor drive in 
 connection with clutches, this condition has been relieved 
 somewhat by the introduction of change gears between 
 the clutch, which imparts the cutting motion, and the 
 driving shaft of the planer, thus rendering available two 
 or three cutting speeds. This arrangement, however, is 
 more or less complicated and expensive, requires consid- 
 erable time for adjustment of the gears, and in general 
 does not provide a sufficient range of cutting speeds. 
 
 The Electric Controller and Supply Company has 
 developed a direct-connected motor drive which gives a 
 number of cutting speeds, and these are instantly avail- 
 able by a simple operation of the controller. By this 
 means the cutting speed may be instantly and accurately 
 adjusted for securing ma.ximum cutting efficiencj' with 
 any material which is to be worked. The planer is direct 
 driven by a variable speed motor without the use of belts 
 or clutches, the motor being, wherever possible, directly 
 coupled to the cross shaft of the planer. By means of
 
 120 The St. Louis 
 
 a reversing switch, operated by dogs adjustably mounted 
 on the platen of the planer, and an automatic controller, 
 the motion of the driving motor is reversed at either end 
 of the stroke. An operating controller is provided, by 
 means of which the speed of the motor, in the cutting 
 direction, may be accurately regulated. The automatic 
 controller is so arranged that on the cutting motion, at 
 each stroke, the table on the planer will 1)e automatically 
 accelerated to a speed determined liy the operating con- 
 troller, and, on the return, the table will in general be 
 accelerated to maximum speed, as it is, of course, desir- 
 able that the table be returned as rapidly as possible on 
 the idle stroke. 
 
 Where desirable, however, as in the case of planers 
 which cut in both directions, the controller may be so ar- 
 ranged that the speed in either direction may be varied 
 at will. The operation of the controller is such that the 
 driving motor will reverse and accelerate the platen of 
 the planer just as rapidly as is consistent with the power 
 of the motor. The maximum current which can flow to 
 the motor is absolutely limited, so that there is no spark- 
 ing or undue mechanical straining at the instant of re- 
 versal. The platen may be reversed by hand through the 
 operation of a shifter attached to the reversing switch. 
 When the shifter is brought to the central position, the 
 platen is instantly stopped. The operating controller is 
 provided with a notched dial which plainly shows the 
 cutting speed, and the automatic controller requires no 
 attention whatever from the operator. 
 
 In the exhibit space of the Electric Controller and 
 Supply Company a Pond planer is driven by a West- 
 inghouse motor, and shows the operation of cutting iron 
 and steel surfaces. 
 
 The ever-increasing magnitude of the power plants, 
 now being constructed, requires steam" and water valves 
 of large proportions, too big to be operated conveniently 
 by hand. Hydraulic, pneumatic and steam-operated 
 valves have by experience been proven unsatisfactory for 
 all purposes and pressures, but with the steadily increas- 
 ing application of electricity to all kinds of machinery, a
 
 Electrical Handbook 121 
 
 large demand has arisen for valves to be operated by 
 electric motors. 
 
 The merits of the electric motor as a means of sup- 
 plying power for a multitude of purposes have led the 
 Chapman Valve Manufacturing Company to adopt this 
 method of operating valves and sluice-gates. This de- 
 velopment practically solves the problem of the rapid 
 handling of large gate-valves, under ordinary conditions 
 and especially in cases of emergency. 
 
 In the designing of such apparatus, the conditions 
 governing the application of the electric motor to the 
 valves were found to differ entirely from the application 
 to all other machinery, inasmuch as the travel is, of 
 course, limited to the size of the valve opening. The 
 problem presented was overcome by the use of a motor 
 especially adapted for the purpose and a lost motion 
 device enabling it to attain practically a run-away speed, 
 as it is series wound. Valves of this class are especially 
 suited for water, steam and oil lines, and for low pres- 
 sure work, such as exhaust and condenser piping, pump- 
 suctions and discharge sewerage, and irrigation systems. 
 They are also extensively used on the receiver piping of 
 compound and triple-expansion engines, and are rapidly 
 coming into use as throttle valves on steam turbine units. 
 If emergency closing or opening is desired it is only nec- 
 essary to push any one of the numerous buttons, located 
 at different points. The valve will close, and automatic- 
 ally cut off the current. This apparatus may be seen in 
 operation at the General Electric Company's exhibit. 
 Space 28, Palace of Electricity. 
 
 The single-phase motors of the Wagner Electric 
 Company are filling a field which has been hitherto un- 
 occupied, for they can be used in places where a supply 
 of either single or polyphase current is available. This 
 motor is applicable except where frequent starting and 
 stopping or where wide speed variation is desired. It is 
 of the induction type and can be operated upon a single- 
 phase alternating current circuit, or upon one phase of a 
 polypliase circuit. A single pair of wires furnishes power 
 to this motor, and if the voltage is to be reduced but one
 
 122 The St. Louis 
 
 transformer is used. No starting box or any other aux- 
 iliary device is required. The attendant simply closes 
 the main line switch, and the motor takes care of itself. 
 This one feature alone is of great convenience, as the 
 switch may be located at any desired point, however dis- 
 tant from the motor, and the same satisfactory starting 
 results be secured. For hydraulic work, the circuit may 
 be opened and closed by an automatic float or pressure 
 switch. While running up to speed, the armature con- 
 nections are such as to place the commutator in service, 
 it being short-circuited through the brushes bearing upon 
 it. On attaining full speed, the automatic governor 
 comes into play, short-circuiting every commutator bar 
 and simultaneously lifting off the carbon brushes. When 
 it is very essential to hold down the starting current, an 
 ordinary rheostat may be used to cut down the pressure 
 at starting. It is possible for these motors to be wound 
 to provide any degree of starting torque necessary. 
 Where the conditions of starting are particularly severe, 
 calling for as much as 50 to 75 per cent, in excess of full 
 load torque, such torque can be provided by special 
 winding without affecting the full load running efficiency 
 of the motor. The motors are being used very success- 
 fully for pumping w'ork. linotype machines, constant 
 speed shop drive, blowers, church organs, and like serv- 
 ice. Among other applications shown in the Electricity 
 Building is one with the motor geared to a triplex pump 
 with water tank and a float for automatically starting and 
 stopping. 
 
 FOREIGN ELECTRICAL EXHIBITS 
 Argentine 
 This country has a small exhibit in the Electricity 
 Building. This exhibit includes telegraph instruments, 
 carbon and lightning-arresters ; there are also maps and 
 diagrams showing the development of the telephone 
 and telegraph systems. 
 
 Belgium 
 In the Belgium national pavilion are some very
 
 Electrical Ha n d b a o k 12^ 
 
 artistic electroliers, storage-batteries, telephone and 
 telegraph apparatus, and many photographs of elec- 
 trical works in that industrial country. 
 
 Brazil 
 
 Brazil's exhibit is devoted largely to the telegraph 
 and fire-alarm systems used by the Brazilian govern- 
 ment. Insulators, and telegraph and telephone ap- 
 ])aratus are also exhibited. 
 
 Can.\da 
 
 The Ontario Power Co. of Niagara Falls has a 
 [mn model of the great electrohydraulic plant uciw 
 building on the Canadian side of the falls. 
 
 DeNiMAKK 
 
 The principal exhibit from Denmark consists of 
 primary batteries. An extensive display will be 
 made by Hellesens ICnke & V. Ludvigsen of Copen- 
 hagen. 
 
 France 
 
 France occupies an area of approximately- 25,000 
 square feet, just east of the main entrance to the 
 Palace of Flectricity. this being the largest section 
 allotted to a foreign country. 
 
 In response to the request for representative ma- 
 chines for use in the Exhibitors' Power Plant, France 
 contributes two generating sets, second in size onlj- 
 to the Allis-Chalmers-Bullock 3,500-kw. unit. These 
 two machines are the finest types of two widely- 
 different classes of luiropean jiractice. one being a 
 low speed horizontal set somewhat similar to .Ameri- 
 can machines of this size, while the high-speed ver- 
 tical machine is an excellent sample of a type re- 
 cently developed abrf>ad. but as yet unknown in 
 large sizes in this country. 
 
 The fornur. l)uiU by the Societe Alsacienne de 
 Constructions Mecani<iues, con.;ists of a 3-phase al- 
 ternator, constructed at the shops in Belfort. France; 
 this machine is direct connected tf> a horizontal tan-
 
 124 
 
 T h c S t . L o 11 is 
 
 deni engine, 1)uilt at tlie Mulhcnisc shops (Alsace) of 
 the same company. This engine is rated 1,000 h.p. 
 at 94 rev. per min. The steam pressure is 150 lb. per 
 square inch. The generator is of the fly-wheel 
 revolving-field type, generating 3-phase current at 
 2,300 volts, 50 cycles. 
 
 The second set has been contributed by tlie So- 
 ciete Delatmaj'-Helleville and the Societe I'Eclairage 
 IClectrique, of which the former are the engine build- 
 ers, the latter constructing the generator. The en- 
 gine is a triple-expansion vertical high-speed ma- 
 
 General Electric Exhibit 
 
 chine, rated at 1,500-h.p., normal speed 330 rev. per 
 min., and taking steam at the comparatively high 
 pressure of 250 pounds per square inch. A charac- 
 teristic feature of the engine is the system of forc- 
 ing oil circulation through the shaft and bearings by 
 means of a geared pump. 
 
 In addition to its exhibit in the power-plant the 
 Societe Alsacienne de Constructions Mecaniques 
 shows different types of machines of different sizes in 
 the Palace of Electricity, among which the most 
 noticeable, perhaps, is a type of multiple-speed alter- 
 nating-current motor. The patents for this machine
 
 E I c c t r i c a I H a n </ h o o k 12 j 
 
 are owned by this comiiany. An alternating-current 
 booster and other machines for special purposes are 
 shown. 
 
 The Societe Gramme, which has stood preemi- 
 nent among the electrical manufacturers since the 
 very earliest days in history, makes one of the most 
 interesting and valuable exhibits. This company is 
 now building the most modern types of generators. 
 As a special feature of its historical exhibit, this 
 company shows the first dynamo built in Europe by 
 Zenobc Gramme, in 1869. The evidution of the gen- 
 erator from this first crude machine to the latest 
 types is also shown by a carefully-arranged series. 
 The exhibit includes several of the companj^'s latest 
 multi-speed direct-current motors, as well as a new 
 and improved magneto, designed for automobile use. 
 
 Electric cables and wires are exhibited by the 
 Cie des Trefileries du Havre, Francois & Grellon, 
 Societe des Telephones, Geoffroy & Delore, as well 
 as Gramont and the Societe Francaise des Cables 
 Elect Berthoud Borel, which manufactures the so- 
 called peripheral cables. 
 
 Special carbons for dynamo brushes, batteries, 
 microphones, etc., are exhibited by J. .\. Berne: the 
 Conipagnie Francaise de Charbons pour 1" Elect ricite. 
 which also makes a fine display of carbons for light- 
 ing purposes. 
 
 Dynamo brushes and brush-holder mechanisms 
 are exhibited by Mr. Bourdreaux, who w-ill also show 
 a patented safety-nut which is meeting with great 
 success in electrical and mechanical construction 
 abroad. 
 
 The Dolter system of surface contact for electric 
 railways is exhibited, contact-pieces being shtnvn as- 
 sembled and in sections. A sample model illustrates 
 the working of this ingenious system. Among the 
 new and genuine inventions shown should be men- 
 tioned an ingenious fuse, which is renewed by press- 
 ing a button. This has been tested under adverse
 
 126 
 
 The St. L o II i s 
 
 circumstances with satisfactory results. A new form 
 of permanent wire connector is also shown. 
 
 The electrochemical display consists largely of 
 primary and secondary batteries. Several new 
 French types of the latter deserve the attention of 
 engineers. Provision will be made for tests on these 
 batteries. At least two are shown for which very 
 broad claims are made. 
 
 The arc-lamp section includes standard devices 
 and novelties. Among these the most recent and 
 
 California State Building 
 
 interesting creation is the Blondel tlame lamp, whicli 
 is meeting with great success in France. The excel- 
 lent regulation obtained from the regular commercial 
 types exhibited by Bardon, Vigreux & Brillie and 
 others may be somewhat of a revelation to those un- 
 accustomed to the niceties of the regulation which 
 prevails in French arc lighting. 
 
 The most effective demonstration of French taste 
 in artistic lighting is offered by the magnificent dis- 
 play of bronzes and brasses shown by Milde, Guinier 
 & Boulanger, who are famed the world over for
 
 Electrical Handbook i2'j 
 
 artistic electroliers and fixtures. A striking and 
 spectacular display is made by Paz & Silva, the well- 
 known pioneers in the line of signs and other meth- 
 ods of decorative lighting. Weissmann has recently 
 brought out the so-called "electric pearl" system of 
 lighting, which is very artistic. 
 
 It is to be regretted that no projectors arc ex- 
 hibited. However, drawings and photographs of tin: 
 best works of Henry Lepaute make an attractive ex- 
 hibit; he also shows a line of electric clocks. The 
 Compagnie Generale de Electricite, one of the largest 
 manufacturers of French incandescent lamps and 
 electric supplies of all kinds, insulators, etc., make;- 
 a ciimplete and interesting display. Another well- 
 known exhibitor of suppilies, possessing equal a'- 
 tractiveness, is the Appareillage Grivolas. 
 
 Parville and the Societe de Folembray exhibit in- 
 sulators for both high and low-pressure, telephone 
 and telegraph work. The French government, whicli 
 controls the telephone and telegraph system of 
 France, makes a display of the apparatus in common 
 use, among which the Baudot and Picard are well 
 known types. A number of others which have been 
 officially adopted by the French government, w'll 
 demonstrate the excellent qualities of the French ap- 
 paratus. A. Darras, who also manufactures ap- 
 paratus for the government, exhibits telephone ap- 
 paratus and several relays for special purposes, while 
 the Societe Indie des Telephones, which supplies 
 nearly 90 per cent, of the telephones used in France, 
 exhibits a quantity of its apparatus. 
 
 The Ducretet physical electrical apparatus and 
 space-telegraph sets will attract considerable atten- 
 tion, especially as the list will be in working order. 
 
 I'rance will ai)pear at licr best in the scctiou 
 wliicli inchides electrical measuring instruments, as 
 tile i)r<)ductions of Depres d'Arsonval and Carpen- 
 tier & Richard are of world-wide reputation. The 
 Richard exhibit is especially broad-guage. as measur- 
 ing apparatus 'A all classes demonstrative of his in-
 
 1 21 
 
 The St. L 
 
 O II I s 
 
 ventive genius will he shown. Chanvin, Arnoux, 
 Rene are equally w^ell-known manufacturers of port- 
 ahle instruments, indicating such high quality that 
 the}' may be seen in a number of installations in this 
 country. The French exhibit would not be com- 
 plete without the Blondel oscillograph; one of these 
 direct from the laboratory of Blondel will be shown 
 in use in his exhibit. 
 
 Pennsylvania State Building 
 
 The Sartiaux Mors signalling system, now in use 
 on the Northern Railway of France, together with 
 the Rochefort system of telegraphy, will be exhibited 
 by the Societe Mors. A special type of transformer 
 for high-pressure, high-frecjuency work, together 
 with wireless apparatus, will be shown by the same 
 Rochefort, who has brought out some interesting 
 types of apparatus. Mr. Ancel will exhibit systems 
 of space telegraphy and telephony, and will also 
 show striking applications of radium. All together, 
 there will be nearly lOO exhibitors in the French 
 section.
 
 Electrical Handbook i^p 
 
 Germany 
 
 The section allotted to German}^ has been largelj^ 
 devoted to electrochemistry. An exhibit has been 
 developed with characteristic attention to detail that 
 shows the progress which German chemistry and 
 electrochemistry have made in the last 150 years. 
 The arrangement of the exhibit is made with a view 
 to comparison, for in walking from one end to the 
 other one can trace the development of one of the 
 most important sciences, which has, since the era 
 oi electrical research, passed from the laboratory 
 stage to a commercial basis. To-day the field of 
 electrochemistry is one of the most important from 
 the commercial viewpoint as well as from that of 
 the scientist and electrician. 
 
 A fact worthy of note is that the exhibit contains 
 nothing but purely German inventions and products. 
 This portion of the exhibit was made without any 
 idea of commercial gain, but simply from an educa- 
 tional and scientific standpoint. 
 
 Entering the German pavilion from the south, one 
 finds at his right the laboratory of an alchemist of 
 the fifteenth century. This laboratory is equipped 
 with relics loaned by the "Germanischcn IMuseiim," 
 in Nuremberg, Germany. In tlie next room the 
 development of inorganic chemistry begins. The 
 most important exhibits are by Professor Hempel 
 of the Technical High School of Dresden and Pro- 
 fessor Bunte of Carlsruhe, who show some very 
 fine apparatus for analyses of gases. The Royal 
 Prussian Porcelain Works of Berlin contributes a 
 very fine collection of ap])aratus for chemical !al)()ra- 
 tories, electrochemical purposes, and the electrical 
 industries. In the same section are shown the sample 
 apparatus of Schott-Genossen, Jena. 
 
 There are also installed some work benches for 
 qualitative and (|uantitative analyses, put up accord- 
 ing to the specifications of the First Chemical Insti- 
 tute in Berlin. On one of these tables, which is nine 
 feet long, is shown the develo])ment of apjiaratus for
 
 /?0 
 
 The St. L o II i s 
 
 measuring the density of vapors, according t(j Pro- 
 fessor Viktor Meyer, who shows original apparatus 
 of high value. Another table shows a series of ap- 
 paratus for ineasuring molecular weights. 
 
 In the section for pyrochcmistry a very interest- 
 ing collectiiin of chemical apparatus is shown, which 
 are made from platinum and quartz; these are the 
 first appliances ever made out of quartz. 
 
 A section which will interest every electrical en- 
 gineer contains the apparatus for the demonstration 
 
 New York State Building 
 
 of the welding process of Theodore Goldschmidt of 
 Essen. Schmidt & Haensch of Berlin exhibit a col- 
 lection of apparatus for spectral analyses. There are 
 also shown some original compositions leading to 
 the discovery of germanium made by Clemens 
 Winkel. 
 
 There follows a section of apparatus for the in- 
 vestigation of steel and iron, and a dark room for 
 demonstrating the properties of radioactive sub- 
 stances. 
 
 Siemens & Halske exhibit modern apparatus for 
 the manufacture of ozone by electricity. As th.is
 
 Electrical Handbook i^i 
 
 application of electricity is one of the very latest, 
 it will be of great interest to see the results which 
 have been attained by this prominent German firm. 
 
 On the right side of the entrance, just opposite 
 the laboratory of the alchmist, is shown a reproduc- 
 tion of the laboratory of the well-known chemist. 
 Professor Liebig, for analj'tical chemistrj^ as he used 
 it in 1835 at the University of Giessen. In viewing 
 this laboratory the visitor is struck by the simplicity 
 of the equipment; it is astonishing how this man 
 could accomplish things of such great scientific value 
 with such a primitively-equipped laboratory. 
 
 Hugo Bremer of Neheim exhibits his new sys- 
 tem of arc-lamps — the so-called Bremer lamps — the 
 patents of which have been acquired by the West- 
 inghouse Electric & Mfg. Company, Pittsburg. In 
 these lamps a special kind of carbon is used. These 
 carbons are impregnated with chemicals, ]ia\ing the 
 effect of increasing very largely the amount of light 
 produced b}- these lamps. The lamps are much 
 more efficient than the ordinary arc-lamp, the current 
 consumed being about 50 per cent. less. Thi^ light 
 has also a peculiar color, which is more agreeable 
 to the eye than the white-blue light of the enclosed 
 arc-lamps. Mr. Bremer has built up a new system 
 of arc-lamps, which have given very satisfactory 
 service in Europe. 
 
 Great Britain 
 
 With the exception of dynamo clectric' machinery, 
 the British exhibit consists of apparatus used in al- 
 most every branch of the industry, exhibited by 
 varifuis makers to illustrate in a measure the ad- 
 vance made in recent years in testing, measuring, 
 calibrating, and recording electric ])lienoinena both 
 in the laboratory and in actual work. 
 
 The space allotted to Great Britain, comprising 
 seven thousand square feet, to the right of the main 
 entrance of the Palace of Electricity, is fronted by 
 imposing and dignified facjades. Nearly all of the
 
 1^2 T h c St. L o II i s 
 
 instruments exhibited have been tested at and have 
 received certificates from the National Physical Lab- 
 oratory and the laboratories of Lord Kelvin and Dr. 
 Muirhead, tlie latter dealing especially with sub- 
 marine-telegraph instruments. The General Post 
 Office exhibits a set of instruments illustrating the 
 progress made in the transmission of telegraphic 
 messages from 1883 to the present time. 
 
 An interesting working exhibit is a model of F. B. 
 Behr's mono-railway, a high-speed car authorized by 
 act of Parliament for the railway between Manches- 
 ter and Liverpool, a distance of 70 miles. This car 
 is designed to run at a speed of no miles an hour; 
 the entire distance will be covered without a stop; 
 the road is practically straight, the sharpest curves 
 having a radius of 1,500 feet. 
 
 The Consolidated Electrical Company makes a 
 fine display of switchboard apparatus. Messrs. 
 Sherard and Cowper-Coles exhibit samples of elec- 
 trochemically made reflectors and copper tubes, and 
 also samples of electroplating. Various lamps, 
 X-ray and high-frequency apparatus, will be ex- 
 hibited by A. C. Cossor, while Muirhead & Co. show 
 an extensive line of submarine telegraph apparatus 
 with the latest Kelvin syphon recorders. The Cam- 
 bridge Scientific Instrument Company has a repre- 
 sentative exhibit consisting of oscillographs, and va- 
 rious electric recorders for laboratory use. Poten- 
 tiometer sets, accurate to a remarkable degree, are 
 exhibited by R. C. Crompton & Co. Elliott Brothers 
 have a line exhibit of switchboard instruments of all 
 kinds and types, while Nalder Brothers and Everett 
 & Edgecumb also exhibit on the same line. The 
 India Rubber and Gutta Percha Company, whicli is 
 known all over the world for its cable work, is show- 
 ing an e.xtensive collection. This company has sup- 
 plied cables for various American and other cable 
 companies. Mr. Darton exhibits a lo-in. induction 
 coil, one of the finest instruments of its kind shown 
 in the Electricity Building. Lord Kelvin and James
 
 Electrical Ha it d b o a k jj ? 
 
 White, whose reputation is world-wide, exhibit a 
 typical line, wdiich covers all of the linest instruments 
 they manufacture. Nalder Brothers and P. Paul are 
 showing some extremel}^ accurate testing and labora- 
 tory instruments, while the Synchronome Company 
 has a full line of its electricallj'-operated clocks. 
 
 Italy 
 
 A notable part of the Italian exhibit is a historical 
 collection of the early apparatus made by Volta, Pa- 
 cinotti. Belli, and Farraris. The indicating, record- 
 ing, and integrating instruments made by Olivetti 
 & Co. of Milan are perhaps, the best of this kind. 
 Wires and cables exhibited bj- Pirelli of Milan, car- 
 bons by the Societa Italiana deU'Flectrocarbonium, 
 of Rome. occup3' the remainder of the space. Photo- 
 graphs and diagrams of typical central stations and 
 electric installations illustrate the progress made by 
 electricity' in Itah'. 
 
 Japan 
 
 While Jajjan has been represented at previous ex- 
 l)ositions in the Department of Electricity, the St. 
 Louis Exposition is the first one in which it has 
 shown electrical machinery of Japanese design and 
 construction. Its exhibit, located in the southwest 
 corner of the Palace of Electricity, contains several 
 articles quite advanced in design and w'orkmanship. 
 
 Probably the greatest interest will be attracted 
 by the 150,000-volt testing transformer, designed by 
 Mr. lijima and built at the Shibaura Engineering 
 Works in Tokio. This same company will also ex- 
 hibit a direct-current generator. While this is not 
 of large size, still it shows that the Japanese are 
 actually and successfully taking up the building of 
 generators and similar classes of machinery. 
 
 The largest exhibitor is the Oki Company of 
 Tokio, its exhibit including a Morse ink writer, a 
 double-current key, several Tervi! telei)hone trans- 
 mitters, a transmitter designed by Iwata, desk tele-
 
 134 
 
 T li c St. Louis 
 
 On the Lagoon
 
 Electrical Handbook 755 
 
 phones, self-restoring annunciators, and switch- 
 boards. This company also makes cables for vari- 
 ous uses, and wires for use in telephone work. It 
 will show single- and double-core telephone cables, 
 three- and five-core cables and subscriber's receiving 
 cords. Its exhibit of electrical instruments will in- 
 clude a Wheatstone bridge, tangent galvanometer, 
 differential, and astatic galvanometer, etc. 
 
 Tanaka & Co. of Tokio will show electromedical 
 instrunu-nts. The Japan Electrical Association of 
 Tokio exhibits a talkie showing the status of elec- 
 trical industry in Japan, while the Kioto City Coun- 
 cil sends plans and ])hotographs of a canal route 
 with water-power electric plan. Several models of 
 hydraulic electric power station in lyo, as well as 
 ])hotographs of the same installation, will lie ex- 
 hibited by Saiga Tokichi. 
 
 AIemco 
 
 The Mexican display consists largely of photo- 
 graphs and plans of the water-power plants, electric 
 railwaj's, and the telephone and telegraph systems 
 throughout the country. 
 
 PORTl'G.VL 
 
 Virgilio ^Mackado, of Lisbon, exhibits a case of 
 books which he has written upon different electrical 
 subjects.
 
 ELECTRIC RAILWAYS
 
 St. Loin's Trdiisit Company 
 
 Historical 
 
 THE first horse railway in the city of St. Louis was 
 l)nilt in tlie year 1859 on Olive street between 
 h'onrth and Seventeenth streets. Between 1859 
 and 1870 man}- horse railway lines were con- 
 structed in different parts of the city. The first cable 
 railway was built in 1885 and opened for traffic in 1886. 
 It is now the St. Louis & Suburban Railway, and, at the 
 time of its construction, terminated at Vandeventer and 
 Franklin avenues, connecting at that point with the nar- 
 row gauge steam line which ran out a distance of eight- 
 een miles through Cabanne and Normandy to Florissant. 
 In the years between 1886 and 1890 the Olive street. 
 Franklin avenue and Broadway lines were equipped to 
 operate by cal)le power. Experiments with electric 
 power were begun in 1887. when the Julien Electric Com- 
 pany of New York built a storage battery car which ran 
 spasmodically on Washington avenue. In 1888 the Short 
 Electric Railway Company installed an experimental line 
 on South Broadway for the St. Louis Railroad Company. 
 The first cxperinunts made by this company were at- 
 tempts to operate cars in series, using a Brush arc-light 
 dynamo to furnish jiower. This method was abandoned 
 and the multiple system was experimented with. No 
 practicable result.s were reached and the experiments 
 were abandoned in 1890, when the St. Louis Railroad 
 Company converted this line into a cable road. The first 
 permits to use the overhead trolley system in St. Louis 
 were granted in April, 1889, and authorized its use on 
 Chouteau avenue west of Jefferson, on Finney avenue 
 west of Vandeventer and also on the California avenue 
 division .south of Chouteau avenue. It was not until 
 April, 1890, that permission was granted by the city au- 
 
 139
 
 140 
 
 The St. Louis 
 
 tlioritics for tlicse lines to l)e extended into the business 
 portion of the city. In Marcli. 1S90. the tirst electric 
 cars in the city were commercially operated by the over- 
 head trolley, and between 1890 and 1S96 all of the exist- 
 ing horse railways were electrically equipped. The cable 
 roads began changing their lines to electric railways in 
 1895 and the last of them were changed in 1900, making 
 the entire traction system of the city overhead trolley. 
 
 Up to 1899 there were ten independent operating com- 
 panies in the city. In that year all of the city transpor- 
 
 Standard Car 
 
 tation companies were consolidated into two, one the St. 
 Louis Transit Company and the other the St. Louis & 
 Suburban Railway, which is the present condition. 
 
 The traction development in St. Louis has been par- 
 ticularly interesting from a historical point of view, as it 
 was here that manj^ of the problems of heavy city electric 
 transportation were first worked out. This was due 
 partly to the fact that St. Louis was early in the electric 
 railway field, and partly because of the keen competition 
 for business between the various independent railroad 
 companies. The early experiments with the storage bat- 
 tery and the series system have already been mentioned. 
 It was here that the first development of the double truck
 
 Electrical Ha n d b o o k 
 
 141 
 
 car for city use took place, and it was here that the first 
 direct-coupled generators for railway power plants were 
 installed in the Cass avenue plant in 1893. St. Louis was 
 the first to use 60-ft. rails for track, and the first city to 
 use cast-welded joints. 
 
 General Lay-Out 
 
 The various lines of the city may be roughly divided 
 into trunk lines radiating from the business portion of 
 the city as a centre, and cross-town lines wdiich intersect 
 
 \..Ttlieni I 
 
 the trunk lines at right angles. As transfers are freely 
 granted, this makes an admirable system for the trans- 
 portation of passengers from one point in the city to an- 
 other for one fare. ihe layout is complicated by the 
 fact that the streets are not always parallel, and contain 
 frequent oflf-sets on account of the various additions 
 which have been made to the city from time to time. 
 Many of the principal streets have followed the general 
 lines of the country roads, whose location was deter- 
 mined by the topography of the ground. The city is 
 hilly and well drained, many of the streets having grades 
 of 6 and 7 j)er cent.
 
 1/^2 
 
 The St. Louis 
 
 Track 
 
 The original horse-car track was built with Hat rails 
 laid on wooden stringers, the girder rail coming into use 
 just before the time of the electric developments. For a 
 long time the standard rail was 7 in. high with a step 
 head, but within the last year quite a good deal of grooved 
 rail 7 in. and 9 in. in height has been laid. Considerable 
 track, especially old track, has been cast-welded. 
 
 Cars 
 
 The original cars used on the electric railways were 
 single truck, closed body, aljout 18 ft. or 20 ft. in length, 
 
 Interior of Compressed Air Station 
 
 with two-motor equipments. The advantages of the 
 large double-truck car were early discovered, however, 
 and all the cars now in service are of this type. Some of 
 these have been made by splicing together two of the 
 single-truck cars. The latest type is a double-truck car 
 with a body 33 ft. in length by 9 ft. in width, supplied 
 with cross seats seating forty-eight people. The cars are 
 run single ended, with a small platform for the motor- 
 man on the front end and a large platform 7 ft. in length
 
 Electrical Handbook 
 
 143 
 
 on the rear end. They are equipped with four 40-h.p. 
 motors and weigh about 40,000 lb. empty. All of the 
 cars belonging to the St. Louis Transit Company are now 
 being equipped with air brakes operating on the storage 
 system. An electric-driven air compressor station is 
 established on each line or at junctions where several 
 lines terminate or intersect. These air compre^^sors fur- 
 nish air at 300 lb. pressure. Each car is equipped with 
 two tanks, one a reservoir tank holding air at 300 lb. 
 
 rii I'owcr Station 
 
 pressure, connected by means of a reducing valve to a 
 service tank holding air at 45 lb., at which pressure it is 
 used in the air cvlindcrs. 
 
 Power Plants 
 
 Both direct and alternating current is used. The di- 
 rect current is furnished from four plants belonging to 
 the Transit Company, and the alternating current partly 
 from a plant belonging to the company and partly by a 
 lighting company. The alternating current is transmit- 
 ted at 6,600 volts and 25 cycles to substations whose out-
 
 144 
 
 The St. L 
 
 It I s 
 
 put is 6oo-volt direct current. Both overhead and un- 
 derground feeders are used in the alternating current 
 distribution. The underground feeders are triplex, 
 paper covered and lead armored. One of the substations 
 is equipped with a large storage battery. The general 
 policy of the railway company is toward an increased 
 use of alternating distribution. The equipment of the 
 plants and substations is as follows : 
 
 Central Station, Park and Vandcvcntcr avenues. 
 Engines: Three 20 and 40 by 30-in. tandem-com- 
 pound, non-condensing Porter-Allen engines, 150 rev. 
 
 Central Substation 
 
 per min., direct connected to 600-kw. generators. Four 
 36 and 70 by 60-in. cross-compound Fulton Iron Works 
 condensing engines, 75 rev. per min., direct connected to 
 2,2S0-kw. Westinghouse generators. Two 2>" and 62 by 
 60-in. Fulton Iron Works cross-compound condensing 
 engines, 75 rev. per min., direct connected to 1,500-kw. 
 Westinghouse generators. 
 
 Boilers: Sixteen 400-h.p. O'Brien water-tube boilers, 
 equipped with Green traveling chain grate stokers and
 
 Elect)- i c a I H a ii d b o o I: 
 
 145 
 
 Hoppes purifiers. All heaters in this station are of the 
 Excelsior type. Eight 325-h.p. Stirling boilers. Six 400- 
 h.p. Stirling boilers, equipped with Hawley down-draft 
 
 dJj 
 
 Section — Central Substation 
 
 furnace and Ho])pes purifiers. Coal and ashes handled 
 by McCaslin conveyor. 
 
 Condensers: Two Worthingtnn jet condensers. 
 Twelve cooling towers. Two i -million, duplex, triple-
 
 146 
 
 The St. L o II 
 
 expansion Epping-Carpentcr pumps, 
 pumps. Three dry-vacuum pumps. 
 
 Six centrifugal 
 
 A'orthcni Station. Broad7\.'a\' and .Salishttry streets. 
 
 Engines: Two 36 and 70 by 60-in. cross-compound 
 condensing engines, built by Fulton Iron Works, 75 rev. 
 per min., direct connected to 2,250-kw. G. E. generators. 
 Two 28 and 56 by 60-in. cross-compound condensing en- 
 
 Intt-rior Central Substation 
 
 gines, 75 rev. per niiu.. 1)iiilt ])y I'ulton Iron Works, direct 
 connected to i.2CO-k\v. ihrce-phase G. E. generators, 6,600 
 volts, 25 cycles. 
 
 Boilers: Sixteen 400-h.p. O'Brien water-tube boil- 
 ers, equipped with Green traveling chain grate stokers. 
 Hoppes purifiers and Excelsior open heaters. 
 
 Condensers: Two Wheeler surface condensers, 10,- 
 000 sq. ft. cooling surface, with two Conover air pumps 
 and two Knowles circulating pumps ; also four cooling 
 towers on roof of building; coal and ashes are handled 
 by McCaslin conveyor. Epping-Carpenter feed pumps.
 
 Electrical Hand b o o k 
 
 147
 
 148 
 
 The St. L 
 
 Gcycr Arcnuc Station. Jcifcrson and Gcycr avenues. 
 
 Engines: One 36 by 48-in. Allis engine, direct con- 
 nected to 800-kw. G. E. generator. One 28 by 54-in. 
 Hamilton Corliss, belted to 500-k\v. Westinghouse gen- 
 erator. One 36 by 60-in. Allis twin, direct connected to 
 1,500-kw. G. E. generator. Two 22 by 60-in. Porter- 
 Allen engines, direct connected to 400-kw. G. E. gen- 
 erators. One 38 by 60-in. Allis engine, direct connected 
 to 1,050-kw. G. E. generator. One 36 by 60-in. Rankin- 
 Fritch, direct connected to 8oo-kw. G. E. generator. One 
 
 Central Suhstatiun 
 
 22 by 42-in. Allis twin, direct connected to 6oo-kw. West- 
 ern Electric booster. 
 
 Boilers: Seven 500-h.p. Heine. Four 300-h.p. Bab- 
 cock and Wilcox. Two 250-h.p. O'Brien. Nine 250-h.p. 
 Heine. Twelve of these boilers are equipped with down- 
 draft furnaces and the remainder are straight fired ; feed 
 water heaters are of the Cochrane type and switchboard 
 of the G. E. type. 
 
 Cass Avenue Station, Spring avenue and N. Market street. 
 
 Engines: Three 34 by 60-in. Allis engines, 94 rev. per 
 min., direct connected to G. E. 800-kw. generators. One 
 18 Ijy 36-in. Allis, 150 rev. per min., direct connected to 
 150-kw. G. E. generator. 
 
 Boilers: Sixteen 200-h.p. tulndar boilers with Haw-
 
 Electrical Handbook 
 
 N9 
 
 ley down-draft furnaces. One old type link-belt ash 
 conveyor. 
 
 Central Substation, ijii Locust street. 
 One 3,ooo-k\v. Electric Storage Battery Company sto- 
 rage battery. Seven i,ooo-kw. General Electric rotaries. 
 Two 252-k\v. General Electric boosters and complete 
 
 (. uniprcsscil .\ii' St:ili<'ii 
 
 direct-current and altcrnalinii-current switchboards with 
 transformers, etc., of General h'Jcctric type. 
 
 Delmar Substation, neliiiar and DeBalivierc avenues. 
 Four 6oo-kw. and one i,ooo-kw. rotary converters, 
 with necessary alternating-current and direct-current 
 switchboards, transformers, etc., of G. E. type. 
 
 Rki'.mk Shops 
 At Park and V'andeventer avenues are located the 
 shops for the rejjairs of trucks, motors and electric equip-
 
 1^0 The St. L u i 3 
 
 ment, and at Jefferson avenue and Gravois road the shops 
 for car repairs. The company does all of its own repair- 
 ing, and at the Park avenue shops there is quite an ex- 
 tensive installation of machinery and appliances for gen- 
 eral repairs and also for the manufacture of the double 
 truck with which the company is equipping its new cars. 
 
 The following are the .statistics of operation of the 
 St. Louis Transit Company for the year ending Decem- 
 ber 31, 1903 : 
 
 Gross earnings from operation $7,259,460 
 
 Total number of passengers carried 210.238,108 
 
 Total car miles run 32,535,626 
 
 Total miles of track 358.65 
 
 Miles of public highway occupied 185.38 
 
 Miles of right of way occupied 22.61 
 
 Percentage of revenue passengers using • 
 
 transfers 40.2^
 
 The St. Louis and Suburban Railway 
 
 THE St. Loi'is and Suburban Railway had its 
 origin in the Central Railroad Company, organ- 
 ized in July, 1872. The road at that time was 
 defined as five miles long, extending from a point 
 150 feet north of Olive street at Grand avenue. Nothing 
 was done towards the actual construction of tliis road, 
 and in August of the same 3'ear the name was changed to 
 the St. Louis and I'lorissant Railroad and built to Kien- 
 lan avenue. A year later the line was extended fifteen 
 miles to what w'as then called St. Ferdinand, now Floris- 
 sant. This road was Iniilt narrow gauge, and steam cars 
 were operated upon it until i<S82, at which time it was 
 sold to the St. Louis, Crevecoeur and St. Charles Rail- 
 road Companj-, which road owned and o])erated it until 
 1884, when it was sold to the St. Louis Cable and West- 
 ern. 
 
 The St. Louis Cable and Western was the first street 
 car company to operate a car line in the city of St. Louis 
 by other motive power than horses. The St. Louis Cable 
 and Western held a franchise authorizing it to build an 
 underground cable railway from Sixth and Locust to 
 Vandeventer and .Morgan streets. In 1891 the St. Louis 
 and Suburban purchased the rights and properties of the 
 combined roads and converted them from steam and 
 cable to electric. Since 1891 the St. Louis, Brentwood 
 and Clayton Railroad, the St. Louis and Meramec River 
 Railroad, and the Brentwood, Kirkwood and Forest Park 
 Raihva\' have been built and added to the Suburban Rail- 
 way system. .\ few extensions have been built in the 
 county and some cross-town lines added in later years. 
 
 As the original company, now part of the Suburban 
 system, operated under a steam railroad charter and 
 owiu'd its right of way, the present company operates its 
 
 151
 
 15^ 
 
 The St. Lou 
 
 1 s 
 
 cars for the most part over private right of way. There 
 is but one line to the business portion of the city, and all 
 other divisions run into this main line at various junc- 
 tons west of Vandeventer avenue. 
 
 The original cable track was a small girder-rail laid 
 on iron yokes, and the narrow gauge was a 35-lb. iron 
 T-rail laid on wood ties. In converting the cable line to 
 electric, it was necessary to remove the iron yokes and 
 cable conduit, and for a long period the rails consisted of 
 girder rails 5 in. high set on chairs and laid on wood ties,
 
 OSob-3t/}T/OA^ O Fo\^£/?-ST-/R-rioN
 
 Electrical Handbook 
 
 153 
 
 but within the last j-ear all the lines on city streets have 
 been reconstructed with girder rail 9 in. high, or with 
 girder rail 6 in. high. The rails on the right of way were 
 40- and 35-lb. T-rail ; these have been removed and 
 standard 80-lb. T-rail laid within the city limits. In the 
 count}- on private right of way 60-lb. standard T-rail is 
 used, with the exception of ten miles where the old orig- 
 inal 35-lb. T is still in use. 
 
 Power Pl.\nt 
 
 The system has but one plant at which power is gen- 
 erated. Both direct and alternating current are used. 
 
 Standard Car 
 
 This power plant is located at De Hodiamont on the 
 Wabash Railroad, and is equipped as follows : 
 
 Boiler Plant: Fifteen O'Brien safety water-tube 
 boilers with a rated capacity of 550 h.p. each, Jones un- 
 derfeed stokers, and coal- and ash-handling machinery. 
 
 Pozi'cr Plant: Two 32 in. by 60 in. simple Hamilton- 
 Corliss engines, 80 rev. per min., direct connected to 800- 
 kw. direct-current generators; one 31 in. by 72 in. simple 
 Hamilton-Corliss engine, 68 rev. per min., belted to two 
 300-kw. direct-current generators ; two 30 in. by 50 in. 
 by 60 in. compound Aliis-Chalmcrs engines, 75 rev. per 
 min., direct connected to 1,200-kw. alternating-current 
 generators ; one 30 in. by 56 in. by 60 in. compound Ful- 
 ton Iron Works engine, 75 rev. per min., direct connected 
 to 1,200-kw. alternating-current generators; one 30 in. by 
 48 in. simple Allis-Chalmcrs engine, 80 rev. per min., 
 direct connected to 800-kw. direct-current generator.
 
 1^4 T he St. L o n i s 
 
 Sixteenth Street Transforming Station: Three 600- 
 kw. rotary transformers. 
 
 Brentzi'ood Transforming Station: Two 6oo-k\v. ro- 
 tary transformers. 
 
 The direct current is used for the Hnes in the vicinity 
 of the power station and is distributed l)y overhead feed- 
 ers. The alternating current is transmitted at 6,600 volts 
 and 25 cycles to the above named substations, whose out- 
 put is 550 volts direct current. 
 
 Cars 
 
 But two types of cars are used on the system ; they 
 are known as large and small cars. Both types are 
 equipped with the St. Louis Car Company's No. 47 truck. 
 The large cars are 46 ft. 8 in. long over all, 9 ft. 2 in. 
 wide, weight 48,000 lb., with a seating capacity of 52 pas- 
 sengers. These cars are equipped with four General 
 Electric No. 67 motors or four Westinghou.se No. 49 
 motors and air-brakes. The small cars are 38 ft. long 
 over all, 9 ft. 1.5 in. wide, weight 34,000 lb., with a seat- 
 ing capacity of 40 passengers. These cars are equipped 
 with four Westinghouse No. 49 motors or two General 
 Electric No. 57 motors and air-brakes. The repair and 
 paint shops for motors, cars, truck and electrical equip- 
 ment are located at De Hodiamont. 
 
 The following are the statistics of operation of the 
 St. Louis and Suburban Railway Company for the year 
 ending December 31. 1903: 
 
 Gross earnings from operation $963,806.96 
 
 Total number of passengers carried 19.931,178 
 
 Total car-miles run 5oi5o36 
 
 Total miles of track 95 
 
 Miles of public highway occupied 46.5 
 
 Miles of right of way occupied 48.5 
 
 Percentage of transfers 12.1%
 
 East St, Louis Q^ Suburban Railway 
 
 Ax important factor in the wonderful growth 
 of East St. Louis has been the electric rail- 
 way system which had its beginning in 1890. 
 This system has extended steadily, not only 
 to all parts of the city, but also to the surrounding 
 towns. The East St. Louis & Suburban Railway 
 Co. now controls and operates the ft)llowing lines, 
 which were formerly independent: 
 
 1. The East St. Louis Electric Railway Co., which 
 began operating its cars in East St. Louis in 1890, 
 with current furnished from its own pow-er station. 
 
 2. The St. Louis & East St. Louis Electric Rail- 
 wa}- Co., which began operating across the Eads 
 bridge in 1890. This company had its o»\-n power 
 station at the east pier of the bridge. 
 
 3. The St. Louis & Belleville Electric Railway 
 Co., built in 1896 and 1897. This company operates 
 over a private right of way between East St. Louis 
 and Belleville. It also owned the lines in Belleville. 
 Its power station was located on the bluflfs, one mile 
 east of Edgemont. This line is now operated as a 
 coal road with electric locomotives. 
 
 4. The ICast St. Louis & Suburban R'ailwa}- Co., 
 which in 1897 constructed its double-track road be- 
 tween East St. Louis and Belleville along the Belle- 
 ville Turnpike. Its power station was situated at 
 Edgemont. 
 
 5. The Collinsville, Caseyville & East St. Louis 
 Electric Railway Co., which built its line in 1899, 
 between Collinsville and Edgemont. This line was 
 supplied with power by the St. Louis & Belleville 
 Electric Railway Co. 
 
 6. The Mississii)pi Valle\' Traction Co., which
 
 156 
 
 T li c S t . Lou is 
 
 built a line from East St. Louis to Collinsville in 
 1901; this was later extended from Collinsville to 
 Edwardsville. Its power station was located one 
 mile west of Cc^llinsville. 
 
 7. The St. Louis, O'Fallon & Lebanon Electric 
 Railroad Co., which in 1903 built a line from Edge- 
 mont to O'Fallon and Lebanon. It is supplied with 
 power from a sub-station. Its road-bed, trestles, 
 and bridges were constructed with a view of sup- 
 
 Power House 
 porting heavy freight traffic. The ma.\imum grade 
 is 1.5 per cent, compensated for curvature. The 
 maximum curvature is 10 degrees. The bridge over 
 Silver Creek is a deck-plate girder, and that over the 
 Baltimore & Ohio Southwestern Railroad, near 
 O'Fallon, is a through plate girder bridge. 
 
 8. Subsequently, the property of the Citizens 
 Electric Light & Power Co., including power house, 
 was acquired. 
 
 At the present time the entire sj'stem of the East 
 St. Louis & Suburban Railwav Co. includes iiT miles
 
 E I c c t r i c a I H a n d b o o k i^/ 
 
 of track. One branch of the suburban line extends 
 east from East St. Louis to Edgemont, another 
 branch runs northeast to Collinsville, while a north 
 and south line between Edgemont and Collinsville 
 completes a triangular loop. From Edgemont a 
 l)ranch extends southeast to Belleville, another 
 branch runs from French Village, just north of Edge- 
 mont, east to Lebanon and a third branch extends 
 from Collinsville north to Edwardsville. 
 
 Belleville, a city of about 20,000 people, is the 
 center of a rich coal and agricultural region. Its 
 manufactures now cover a wide range of products 
 which contribute largely to the business of the rail- 
 way. This city has been the county seat of St. Clair 
 county since 1814 and was the home of three of the 
 governors of the state of Illinois. 
 
 Collinsville is a progressive city of about 7,000 
 population and is growing rapidly. It lies in a large 
 coal-mining district and contains numerous manufac- 
 turing industries. O'Fallon is now a thriving town 
 and illustrates the value of an electric railway to 
 a small community, as since the advent of electric 
 cars the growth in jm >pnlatinn and amount of build- 
 ing has been marked. The dial mines at this place 
 constitute one of its Icadiiii; industries. Leijauon 
 has a population of 3,000, and forms the present 
 eastern terminus of the line. 
 
 Edwardsville is the northern terminus of the line 
 and is a rapidly-growing city. It is a place of much 
 historical interest, being the home of Governor Ed- 
 wards, the first territorial governf)r of Illinois, for 
 whom the place was named. 
 
 In order to generate power for the various prcjp- 
 erties to the best advantage, a power station was 
 erected in i^ast St. Louis, with sub-stat'ions properly 
 distrilmted; the live smaller stations used before the 
 consolidation were ahauiloned. 'i'lu- new power sta- 
 tion is located l)etween the two belt railroads, and 
 on tlie electric lines to Belleville. Fuel is received 
 over tj-.e com])any's coal road, wliich is here con-
 
 I5S 
 
 The St. L o II i s 
 
 nected with Ixith hell railroads, and which in turn 
 connect with all steam roads entering ICast St. 
 Louis. 
 
 The dimensions oi the power station, which is a 
 brick structure, are 207 ft. 6 in. by 1 15 ft. The founda- 
 tion walls are of concrete, resting on piles. All 
 engine and boiler foundations, built also of concrete, 
 are on piles. Steel roof-trusses carry the gravel 
 roof and the coal-bunkers above the boilers. The 
 greater portion of the current generated at this sta- 
 
 Interior of Power House 
 
 tion is used in the city railway service of East St. 
 Louis, with a centre of distribution a little more 
 than a mile distant. 
 
 The low cf)St cti coal and the absence of a cheap 
 water supply made the use of simple non-condensing 
 engines necessary. The coal used is nut, pea, and 
 slack, w'hich is handled from the mines in the com- 
 pany's bottom-dump cars. These discharge their 
 contents into a steel hopper over the conveyor. This 
 conveyor is of the overlapping bucket type, with 
 18 by 24 in. buckets, delivering the coal to steel 
 bunkers htdding two car-loads each, over the boilers. 
 The ash is taken from the pits beneath the boilers 
 by the same conveyor, and emptied into a hopper
 
 Electrical Handbook i ^o 
 
 overhead, from which it is discharged into the coal 
 cars by gravity. 
 
 The boiler mom contains live i.ooo-h.p. batteries 
 of Heine water-tube boilers. In order to obtain 
 enough grate surface, owing to the grade of coal 
 used, it was necessary to set two 250-h.p. boilers 
 side bj' side to form each half of the battery, instead 
 of using the single 500-h.p. units. Demand for large 
 grate-surface prompted the construction for this 
 plant of the first traveling link-grates 12 ft. in width. 
 
 The engine-room, which is served by a 35ton 
 crane, contains five engines direct connected to their 
 generators, three motor-generat(ir sets, one syn- 
 chronous converter, besides one motor-driven and 
 two steam-driven exciters. The direct current at 
 550 volts, sui^plying the city trolley lines, is fur- 
 nished b}- a i,()00-kw. generator, driven by a twin 
 Corliss engine, having cylinders 34 in. in diameter 
 by 60 in. stroke, and hj- two 4_'5-kw. generators, each 
 direct connected to a 22 bj' 42 in. Corliss engine. 
 The 300-kw. sj-nchronous converter also stands ready 
 to convert 13.200-volt alternating current into 550- 
 volt direct current, on demand. 
 
 The current for the suburban lines is generated at 
 13,200 volts having 25 cycles. Two 750-kw., 3- 
 phase revolving-field alternators supply this current. 
 Each alternator is keyed to the shaft of a Corliss 
 engine, running at 94 rev. per niin. The alternators 
 are operated in parallel witlmut ditVicult}-. 
 
 The blue Vermont marble switchboards occupy 
 the south end of the engine room. The lower board 
 is used for the 550-volt direct-current railway and 
 for the control of the 13,200-volt, 25-cycle alternating 
 current. The alternating currtMit is distributed to 
 the three sul)-stations now in operation through oil 
 switches. Behind each of these oil switches the 
 line may be again opened by means of knife switches. 
 This double-switch arrangement was carried out 
 through the whole of the 13,200-volt system. 
 
 The upper switchboard is set on a gallery sup-
 
 i6o 
 
 The St. L 11 is 
 
 ported by a 36-in. plate girder. It is used for the 
 centred of the 2,300-volt lighting current, the arc 
 circuits and 550-volt direct-current power circuits. 
 
 The sub-stations are located as shown on the 
 accompanying map. Those near Maryville and 
 O'Fallon each contain two 200-kw. synchronous con- 
 verters, and seven 75-kw. oil-cooled transformers, 
 with reserve space for another set. The sub-station 
 on the bluffs east of Edgemont contains at present 
 two 300-kw. synchronous converters with 125-kw. 
 oil-cooled transformers. It also has reserve space. 
 
 Switchboard 
 
 The arc and incandescent lighting for East St. 
 Louis is done from the main power station by means 
 of motor-generator sets. As this lighting load is 
 comparatively small it is handled by taking 550-vo!t 
 current from the railway bus-bars and changing it 
 to 2,300-volt, 60-cycle alternating current, by means 
 of motor-generator sets. There are two of these 
 sets in the station, governed by a Tyrrill regulator, 
 each being of 420-kw. capacity. The 550-volt oower 
 circuit is changed from grounded to metallic circuit 
 in the same way, through the medium of a 300-kw. 
 set. The arc lighting is done through three 100- 
 light constant-current transformers. 
 
 The bare high pressure lines and insulated sub-
 
 Electrical Handbook 
 
 i6i 
 
 urban ked-wires are of aluminum on glass insulators. 
 White cedar poles are used throughout. The trolley 
 wire is mainly of the No. oo figure 8 type, hung from 
 brackets on suburban lines, and No. oo round in East 
 St. Louis. 
 
 A feature of interest in connection with the sys- 
 tem of the East St. Louis & Suburban Railway Co. 
 is its telephone system which covers the whole of the 
 city and suburban lines. Arrangements are made 
 
 Substation 
 
 for attaching portable telephones to the poles at 
 about every i,6oo ft. ICach suburban car carries its 
 own portable telephone as well as a pole list, so 
 that in case of accident communication can be quick- 
 ly iuid with shops or the superintendent. Tlie tcle- 
 ])lione list contains the names aiul numbers for botli 
 tlu- ])ri\ate line, the I'.ell teleplioiu-s, and tlie Kin- 
 loch telei)honc> of tlu- various offices and stations 
 on llir road and of tlie company's physicians which 
 are to be called in case of accident. The poles on 
 all the sidjurban divisions are consecutively num- 
 bered and on the back of the telephone list is given 
 the number of each jjole to which telephones maj'
 
 l62 
 
 The St. Louis 
 
 be attached. Ry means of this system a car on 
 any part of the lines can immediately communicate 
 with all of the shops, stations, and ofifices of the 
 company. 
 
 The cars in the city service seat 36, passengers. 
 They are of the closed type, with 26 ft. bodies, each 
 having two G. E. No. 67 motors on Brill trucks. 
 Twelve bench open cars are in service during the 
 summer. 
 
 Interurban Car 
 
 The suburban cars are supplied with four G. E. 
 No. •,/ motors, and are equipped with air-brakes. 
 They have a seating capacity for 60 people. The 
 bodies are 40 ft. long and platforms are 5 ft. wide. 
 These are mounted on St. Louis Car Co.'s No. 2^ B 
 trucks. 
 
 The freight traffic on the line Ijetween East St. 
 Louis and Belleville is handled by two 50-ton elec- 
 tric locomotives, each equipped with four i6o-h.p. 
 motors and air-brakes.
 
 ELECTRIC LIGHTING AND 
 POWER STATIONS
 
 Electt^ic Lighting and Power Stations 
 
 THE beginning of electric lighting in the cit.v of St. 
 Louis was in the fall of 1878. when Carl Heisler, 
 electrical engineer, brought from Paris two 
 small Gramme dynamos. One of these was the 
 generator, the other its exciter. The generator had a 
 stationary armature and revolving field, and produced 
 alternating current. This apparatus was erected by ^Ir. 
 Heisler. assisted by Mr. William Wurdack, at P'aust's 
 Restaurant at the corner of Broadway and Elm street. 
 
 A small boiler and engine were set up to drive this 
 apparatus, but as these were insufficient for the purpose 
 the service furnished was intermittent and unsatisfac- 
 tory. The plant, however, was run for several months. 
 The lamps consisted of JablochkofF candles, there being 
 twelve candles set on three stands, with four candles con- 
 nected to each. 
 
 When this service proved unsatisfactory, the Gramme 
 machine was replaced by a Hochhausen arc machine. An 
 arc-light was suspended at the corner of Broadway and 
 Elm street, and the first street lighting in this city began. 
 On account of its novelty, this arc-light attracted great 
 crowds, who assembled to watch its operation. The arc- 
 light was of foreign manufacture and was imported by 
 Mr. Adolphus Busch. who was associated with Mr. Faust 
 in this first plant. After operating this lamp for several 
 weeks for street lighting, the little plant was moved and 
 set up in the old Polytechnic Building, corner of Seventh 
 and Market streets. The lamp was hung in the library 
 and was operated at this place for a much longer period. 
 The operation of the lamp was crude and uncertain and 
 it was found necessary to attach a string to the upper 
 carbon, carry it over a pulley and have a small boy sta- 
 tioned always within reach to pull the carbons apart when 
 
 16.:;
 
 i66 T he St. L o II i s 
 
 ihey came together and the lamp mechanism failed to 
 separate them agani and strike the arc. 
 
 Following this first attempt at electric lighting, the 
 Brush Company of Cleveland, Ohio, established an elec- 
 tric lighting plant at the southwest corner of Seventh 
 and Walnut streets. This plant consisted of six Brush 
 arc dynamos driven by two Watertown high-speed en- 
 gines. The lamps consisted of both single carbon and 
 double carbon lamps of the Brush type. There were also 
 some incandescent lamps run in series with the arc-lamps 
 on the Brush multiple-series system. The output of this 
 plant was used for commercial lighting only. 
 
 After the establishment of this Brush plant followed 
 the organization of the St. Louis Illuminating Company 
 by Carl Heisler in 1884. This plant was located at Third 
 and Gratiot streets and consisted of eight Heisler, 5-am- 
 pere alternating-current generators, driven by Fitchburg, 
 Buckeye, and Russell engines. The first four-valve type 
 of engine manufactured by the Russell Company was 
 installed in this plant. These dynamos each had a ca- 
 pacity of 550 thirty candle-power incandescent lamps, 
 which w>:re used for commercial lighting. 
 
 In the year 1889 the Missouri Electric Light & Power 
 Companj' was organized by Guido Pantaleoni. The 
 plant, built under the supervision of Mr. Herbert A. 
 Wagner, electrical engineer, was started in August, 1889, 
 and comprises the plant known at the present time as 
 Station A of the Union Electric Light & Power Com- 
 pany. This plant started with a capacity of 10.000 six- 
 teen candle-power lamps, which increased to 20,000 at the 
 end of the first six months. From this promising begin- 
 ning the success of electric lighting in this citj' was as- 
 sured. 
 
 About the time that the Missouri Electric Light & 
 Power Company was organized, the Municipal Electric 
 Light & Power Company was formed to carry out the 
 city lighting contract that had been awarded to Charles 
 Sutter. In 1893 the Edison Illumijiating Company of 
 St. Louis was organized and acquired the property of 
 the ^lunicipal Electric Light and Power Company.
 
 Electrical Handbook i6j 
 
 This company was operated as an independent light- 
 ing company until 1897, ^vhen the Missouri-Edison 
 Electric Company was organized for the purpose of con- 
 solidating the electric lighting and power interests of 
 the city. This new company absorbed the Missouri 
 Electric Light & Power Company, the Municipal Electric 
 Light & Power Company, and the St. Louis Electric 
 Light & Power Company, the latter being a smaller or- 
 ganization which had built up considerable business in 
 tlie supply of commercial series arc lighting and electric 
 power with 220-volt direct current. The plants of these 
 three companies in 1893 comprised the following equip- 
 ment • 
 
 The ^lissouri Electric Light & Power Company, 4,100 
 h.p. of steam engines and 40,000 16 c-p lamp capacity in 
 generators. 
 
 The Edison Illuminating Company of St. Louis had 
 a total capacity of 4,800 h.p. in engines and 12,000 16 c-p. 
 capacity in alternating-current generators and 4,500 arc 
 lamp capacity in arc machines ; also 28o-kw'. capacity in 
 500-volt power generators. 
 
 The St. Louis Electric Light & Power Company had 
 an engine capacitj- of 1,100 h.p., alternating-current gen- 
 erator capacity of 3,600 16 c-p. lamps and 420 lamp capac- 
 ity in arc-lighting machines ; also power generators of a 
 total capacity of 440 kw. 
 
 The latter station was operated only for a short pe- 
 riod after the consolidation until arrangements could be 
 made for transferring its load to larger stations. 
 
 In 1897 the Imperial Electric Light, Heat & Power 
 Company was organized to operate under a franchise 
 obtained covering the new underground district of the 
 city. This plant was designed for serving the under- 
 ground district, which comprises the principal business 
 part of the city. The plant was located approximately 
 in the centre of the underground district, at Tenth and 
 St. Charles streets, and the 220-440 volt direct-current 
 system of distribution was adopted. This ])lant was ab- 
 sorbed aI)out a year ago by the Union Electric Light &
 
 i68 T Ji c St. L o u i s 
 
 Power Compau}-, and is now known as their Imperial 
 Plant. 
 
 The development of the electric lighting and power 
 business in St. Louis has been similar to that in other 
 American cities where smaller plants have been consoli- 
 dated and larger ones rebuilt to replace them. In some 
 respects, however, pioneer work has been done in this 
 city by the engineers in charge of the designing of these 
 properties. In 1893 the Edison Illuminating Company of 
 St. Louis was operating the largest series arc lighting 
 station in the world. This system was afterwards 
 changed by Herbert A. Wagner to a series alternating- 
 current system by making slight changes in the arc- 
 lamps themselves, and connecting them through a regu- 
 lator and a step-up transformer, giving variable second- 
 ary so that the current could be maintained constant by 
 the switchboard attendant. By changing over the entire 
 system in this way, the small arc-light machines were 
 replaced and all of the arc-lamps operated from the large 
 alternating-current units. 
 
 When, in 1897, the city ordinances required all wires 
 throughout the business district to be put underground, 
 the Missouri-Edison Electric Company put down a com- 
 plete network of underground mains operating at 1 10-220 
 volts, on a three-wire alternating-current system, fed by 
 large transformers placed in manholes at street intersec- 
 tions. These transformers were supplied at 1,100 volts 
 pressure through duplex underground cables. This was 
 the largest single-phase underground distribution at- 
 tempted in this country and attracted a great deal of 
 attention on account of the original lines on w'hich it was 
 laid out. Its practicability and efficiency have been 
 proved by its successful operation. 
 
 The plant of the Imperial Company was also the first 
 attempt in this country to install a high-pressure 220-440 
 direct-current system on an extensive scale. The growth 
 in output from this plant, as shown in a later article, has 
 demonstrated the practical engineering and commercial 
 success of this design.
 
 world's *v^fR (
 
 The Union Electric Light and 
 Company 
 
 THE Uxiox Electric Light and Power Company 
 was incorporated in 1903, being a combination 
 into one company of the ^lissouri-Edison Com- 
 pany, the Imperial Electric Light, Heat and 
 Power Company, the Seckner Contracting Company and 
 the Citizens' Electric Light and Power Company. 
 Through its ownership of the physical property and 
 franchise rights of these companies, the Union Company 
 acquired all the principal generating stations, together 
 with nearly all the underground conduit used for electric 
 light and power purposes in the city of St. Louis. At 
 the present time the Lfnion Company owns and is oper- 
 ating four generating stations as follows : 
 
 'Jhe Ashley Street jilant at Ashley street and the Mis- 
 sissippi river ; 
 
 Tlic Imperial plant at Tenth and St. Charles streets, 
 The Missouri-Edison Station "A" at Twentieth and 
 Locust streets. 
 
 The Missouri-Edison Station '"P." at Xineteenth and 
 Gratiot streets. 
 
 The Ashley Street plant is not yet fully completed, 
 there being installed ready for operation but 12,000 kw. 
 of engine-driven generating capacity. There remain to 
 be installed two 2,000-kw. and four 5,000-kw. turbine 
 units of the Curtiss type. Before January i, 1905, there 
 will be installed 36,000 kw. at the Ashley Street plant, 
 24,000 of which will be turbine driven. 
 
 The combined capacity of the Imperial and the Mis- 
 souri-Edison plants, which arc older, is 11,000 kw. It is 
 the intention to convert such of these plants as are suit- 
 ably located into substations, operating the steam ma- 
 chiiury during the winter peak only. 
 169
 
 lyo 
 
 The St. L 
 
 ^
 
 Electrical H a ii d b o o k lyi 
 
 'Ihe Union Company will furnish to tlie St. Louis 
 Transit Company from its Ashley Street plant eighteen 
 hours per day. 9,000 k\v. of 6,600-volt, 3-phase, 25- 
 cycle energy. In addition to this business the Union 
 Company has at present a connected load as follows : 
 
 Direct-current motors 9.300 h.p. 
 
 Alternating-current motors 1,000 " 
 
 Alternating-current arc-lamps 3.500 
 
 Direct-current arc-lamp'-- 4.100 
 
 Series direct-current arcs, city lighting 1,000 
 
 Incandescent lamps in 16 c-p. equivalent. .. . 590,000 
 
 The Union Company has fully covered all the terri- 
 tory within the city limits with either its underground or 
 its overhead systems of distrilnition. The extent and 
 character of its distributing circuits are as follows: 
 
 I'XDERCROUND 
 
 Trench feet conduit 490,085 feet 
 
 Duct feet conduit 2,tS63,i33 " 
 
 Laterals 154,616 " 
 
 Cables 250 miles 
 
 OVERHE.M) 
 
 Poles 10,000 
 
 Overhead wire 550 miles 
 
 THE ASHLEY STREET PLANT 
 
 The BciLDixG 
 
 The new central station of the Union Electric Light 
 and Power Company known as the Ashley Street plant, 
 is situated on the west bank of the Mississippi river at 
 the foot of Ashley street, aljout half a mile from the 
 centre of the business district. The building consists of 
 an engine room 319 feet lo1ig, 78 feet wide, and 84 feet 
 high, adjoining a bf>iler room 31Q feet long, 96 feet wide, 
 and 117 feet high, the boiler room being on the river side 
 and the length of the building being parallel to the river. 
 The foundations of tlu' building are of concrete, resting 
 in every instance ujion the solid mck, which is of a hard 
 white limestone form.'ition. The concrete foundations.
 
 172 
 
 T li c St. Louis 
 
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 Electrical Handbook 
 
 173- 
 
 where the foundation walls are high, are strengthened by 
 steel framing. The foundation wall for the boiler room 
 on the river side is 60 feet high and 32^ feet long, and its 
 base rests upon the solid rock at a depth of 10 feet below 
 the low-water stage, a depth of 48 feet below the high- 
 water stage' and a depth of 25 feet below the average 
 stage of the [Mississippi river. 
 
 The superstructure is of brick, terra cotta, and steel 
 construction, the steel resting on top of the foundation 
 walls. The building is most ornate both externally and 
 
 internally. The exterior is largely of terra cotta and the 
 form of architecture is Roman. The general impression 
 is a series of Ionic pilasters joined by round Roman 
 arches and surmounted by a cornice all in terra cotta. 
 The remainder of the external surface is of gray St. 
 Louis pressed brick. 
 
 The interior of the engine room is of white enamel 
 pressed brick except at the engine-room floor, where for 
 a height of 12 feet the white enamel brick is replaced by 
 a brick of brown enamel. The insides of the boiler- 
 room walls are faced with gray pressed brick. The en- 
 gines rest on concrete foundations 24 feet high resting on 
 the solid rock.
 
 174 
 
 The St. L u i .
 
 Electrical Handbook 1/3 
 
 The switchboard is located at the south end of the 
 building and is contained on five galleries. The columns 
 and the fronts of these galleries are in white enameled 
 terra cotta and conform in general architectural design 
 to the exterior of the building. Adjoining the engine 
 room is an annex six stories high, 58 feet long, and 14 
 feet wide. The basement of this annex contains the oil- 
 filtering tanks and the mezzanine floor the exciter sto- 
 rage-battery. The upper four floors contain the offices, 
 shower and tub bathrooms, wash-basins, lockers, closets, 
 etc.. for the use of the operating force. 
 
 The boiler room structure has a basement 20 feet 
 high, two boiler rooms one over the other, 24 feet and 18 
 feet high respectively, and above this a io,oco ton coal 
 bunker 42 feet high surmounted by a roof in the form of 
 a series of monitors joined by portions of flat concrete 
 roof. 
 
 Adjoining the northeast corner of the boiler room on 
 the river side is a coal- and ash-handling tower ;i;i feet 
 square and 93 feet high from the top of the building 
 foundation to the track for the revolving hoist tower. 
 The coal tower is built of steel and brick, and corre- 
 sponds to the main building in architectural treatment. 
 The railroad switches pass through arched openings on 
 the level of the foundations. 
 
 The floors, roofs, coal-bunkers, and ash-bins are con- 
 structed of concrete arches on I-beams, using the Roeb- 
 ling system of !=teel reinforcement. 
 
 Engines: There are installed five engines built by 
 the Allis-Chalmers Company, direct connected to 
 3-phase. 25-cj'cle, alternating-current generators built by 
 the Westinghouse Electric and Manufacturing Company. 
 There are two 1.500-kw. units and three 3.000-kw. units. 
 The engines are of the vertical Reynolds-Corliss type 
 with steam and exhaust valves placed in the cylinder 
 heads. The generators are mounted between the two 
 cylinders and adjacent to large fly-wheels, the weight of 
 the fly-wheels being 155.000 pounds for the i.5CO-kw. 
 units and 310.000 pounds for the 3.ocio-kw. units. The 
 principal dimensions of the engines arc as follows :
 
 ij6 The St. L o n is 
 
 3,000 kw. 1,500 kw. 
 
 High-pressure cylinder .... 46 in. diani. 32 in. diam. 
 
 Low-pressure cylinder 94 in. " (14 in. 
 
 Stroke 60 in. 60 in. 
 
 Revolutions per minute .... 75 75 
 
 Steam pressure i8o lb. 180 lb. 
 
 Each engine is provided with a receiver between the 
 high- and low-pressure cylinders, having a volume of 1.5 
 times the low-pressure cylinder. The cylinders are not 
 jacketed and there is no reheating in the receivers. The 
 bed-plates are of vertical pattern cast with oil receptacles. 
 The bearings are water jacketed and babbitt lined. The 
 cross-head slides are also water jacketed. The frames 
 are of the circular "sweep up"' type and bored to form 
 cross-head guides. The galleries are of cast iron, brack- 
 eted and carried by the main frame having brass hand- 
 rails with polished steel stanchions. 
 
 For the 3.000-kw. engines the cross-head and crank- 
 pins are 14 in. by 14 in. The crank-shaft is 37 in. in 
 diameter, hollow and made of open-hearth steel, fluid- 
 compressed, oil-tempered, hydraulically-forged. The 
 cranks are counterbalanced. The connecting-rods are of 
 open-hearth steel with bolted-strap crank ends. The 
 pistons are fitted with bull-rings which cover the entire 
 face. The piston-rods are secured to the cross-heads by 
 thread and jamb nuts for equalizing clearance spaces. 
 An auxiliary governor is provided and controls a but- 
 terfly throttle-valve. When the engine speed reaches the 
 predetermined maximum the auxiliary governor trips the 
 butterfly valve and shuts off steam. The engines are 
 designed for the generators to run in parallel and regu- 
 late within 2% from no load to 5o7c overload. The 
 normal load for these engines is considered 4,600 i.h.p., 
 but the engines arc built to carry continuously a load of 
 7,000 i.h.p. 
 
 The 1,500-kw. units are similar in all respects to the 
 3,oco-kw. units, but of reduced dimensions, and the shafts 
 are solid. The engines are provided with permanent 
 indicator motions. The weight of the larger engine is 
 1,200,000 pounds and the smaller engine 600,000 pounds.
 
 /{ I c c t r i c a I H a ii d b o o k lyy 
 
 The floor space reciuired for the 3,oco-k\v. units is 31 feet 
 ))\- 46 feet and for the i.5C'0-k\v. units 25 feet by 38.5 feet, 
 riie five engine-units, aggregating u.ooo k\v., with 
 their condensing apparatus and exciters, occupy a floor 
 space in the engine room 204 feet l)y 78 feet. Two 2,000- 
 k\v. turbines have been installed in part of this area and 
 occupy, with their au.xiliary apparatus, a floor space of 
 17 feet by 20 feet each, just east of the 1,500-kw. engine 
 units. 
 
 Boilers: There are installed at the present time 2(i 
 intcrnally-th-ed boilers of the marine type, and contracts 
 have been awarded for 2 additional boilers of this type 
 and 40 additional boilers of the water.-tube type. The 
 marine boilers are ii ft. 6 in. in diameter and 24 ft. over 
 all. Each boiler contains two 44-in. and one 50-in. cor- 
 rugated suspension-type furnace 7 ft. 6 in. long. These 
 furnaces terminate at the rear into a combustion cham- 
 ber. Leading from this chamber there is a bank of fire- 
 tubes each 3.5 in. in diameter and 1 1 ft. long. The tubes 
 are spaced 4.73 in. on centers. The total number of 
 tubes to each boiler is 408, of which 70 are used as stay- 
 tubes. Each furnace is provided with an automatic 
 stoker of the Jones underfeed tyiie. These stokers are 
 capable of l)urning in each boiler a minimum of 2.800 lb. 
 of coal i)er hour tuider a 2 oz. air jjressure ; and when 
 coal in this amount is burned each boiler evaporates 
 2i,oco lb. of water jier hour from and at 212 degrees fahr. 
 
 These underfeed stokers require forced draft, the air 
 being blown from opposite sides directly into the coal in 
 a horizontal jet. induced draft is also used to keej) up 
 the circulation of ga.ses through the long economizer 
 pas.sages. 
 
 I'^our 9 ft. 6 in. diameter fans driven by single-cylinder 
 engines form the forced-draught equii)ment for the first 
 installation of 26 boilers. The furnaces of the upper- 
 deck boilers are to be su]ii)lied 1)\' individual niotor- 
 dri\'en blower^. Two 13 ft. (i in. fans drivi-n 1)_\- double 
 cylinder simple engines are used for induceil draft on 
 the economizer lines. 
 
 rif>iii_ii: All steam ])i])ing ;ni(l lii,uh-i)ri ssure water
 
 178 
 
 7" // c St. L 11 is 
 
 piping is of boiler tubing, with semi-steel flanges of the 
 tongue-and-groove type shrunk on and riveted. The 
 joints are packed with sheet-rubber gaskets. '!"hc circu- 
 lating-water piping and the main exhaust-header are of 
 riveted-plate piping, with cast flanges riveted on. The 
 central feature of the steam piping is the 24-in. steam- 
 header adjacent to the dividing wall between engine and 
 boiler-rooms and e(|ual in length to the space occupied 
 bj' the 26 marine boilers. The boilers are connected in 
 
 Marine lioiler— .\shley Street Plant 
 
 pairs, one on either side of the central alley running the 
 entire length of the boiler room. Each pair of boilers 
 discharges steam through goose-neck bends into a com- 
 mon pipe parallel to the axis of the boiler and which 
 enters the steam-header opposite the pair of boilers, there 
 being a connection into the steam-header for each pair. 
 
 Opposite each engine a connection is taken ofif from 
 the steam-header which, after passing through a steam 
 separator, goes to the engines. The exhaust-pipe from 
 each engine has a connection to the condenser and to the 
 atmospheric exhaust-header which runs along the engine- 
 room wall in the basement on the side opposite the steam-
 
 Electrical H a n d b o o k i/g 
 
 header. An auxiliary steam-header for supplying the 
 auxiliary machinery runs underneath the hoiler-room 
 floor and has a connection erected to each boiler. 
 
 The high-pressure piping for the additional boiler 
 equipment is to be extra-heavy pipe with special extra- 
 heavy screwed flanges. The low-pressure piping is to 
 be standard weight with standard fittings. The atmos- 
 pheric exhaust-pipes are to be spiral riveted. 
 
 The plans for the steam piping, feed-water piping, 
 etc., for the additional equipment of 40 boilers, have not 
 been entirely completed at this writing. 
 
 Condensing System: The five engine-units are 
 equipped with Wheeler surface condensers each contain- 
 ing ii.oco square feet of condensing surface for the 
 3,000-kw. units and 5,500 square feet for the 1,500-kw. 
 units. Each condenser has a bucket air-pump driven by 
 a vertical simple engine. The two 2,000-kw. turbine 
 units are equipped with Wheeler condensers, each having 
 8.000 square feet condensing surface, suspended by means 
 of car-spring hangers from the floor-beams under the 
 turbines. Each of these condensers has a motor-driven 
 Edwards air-pump. The four 5,ooo-k\v. turbine units 
 are each equipped with a 20,000 sq. ft. Worthington sur- 
 face condenser. Each of these has a rotative steam dry- 
 vacuum pump and a motor-driven centrifugal wet- 
 vacuum pump. The air pumps all discharge into a large 
 hot well, from which the water is pumped into Hoppes 
 open heaters. 
 
 Condensing water is supplied by five large centrifugal 
 pumps, three having ,^0 in. and two 45 in. discharge open- 
 ings. The three 30 in. pumps, which were a part of the 
 original installation, are located in the boiler-room base- 
 ment. They are driven by four-valve, vertical, throt- 
 tling engines. These pumps supply the engine-units and 
 the 2,000-kw. turbines. The two 45-in. ])umps which are 
 to be located in the engine-room will supply the 5,000- 
 kw. turbine condensers. Each of these is driven by an 
 18 in. by 38 in. by 42 in. steeple-compound Corliss con- 
 densing engine. The i)ump impellers arc designed to act 
 as fly-wheels for the engines and are mounted on the
 
 i8o 
 
 T he St. L o II
 
 Electrical Ha n d b o o k 
 
 i8i 
 
 engine-shafts. Each of the 45-in. pumps ha^ a capacitj' 
 of 70,000,000 gal. of water per day against a head of 40 
 ft. running at ico rev. per min. 
 
 An idea of the piping of the circulating suction- 
 supply and discharge-pipes may be gained from the 
 sketch. Fig. i. It will be seen from this diagram that 
 all of the pumps take their suction from two steel and 
 concrete chambers located deep down in the foundation 
 of the coal-tower. Plan and elevation sections of these 
 chambers are shown in Figs. 2 and 3. These chambers 
 each have a reinforced steel-plate screen well opening out 
 
 i— 
 
 I^X-. 
 
 jv" "V^^ ■ 
 
 ! i 
 
 
 
 
 at the top of the foundation. Each of these steel wells 
 has two screens which may be used at the level of either 
 of the two gates, and may be raised to the top for clean- 
 ing. It is proposed to use the upper sluice gate at times 
 of high water to avoid drawing in the mud and sand 
 which is carried in suspension in greater quantities at 
 the lower levels. 
 
 The ends of the suction ])ipes are five feet below the 
 low-water line: the centres of the pumps are 13 feet 
 above low water; the highest point in the circulating 
 pipe-lines is 40 feet above, and the ends of the discharge 
 pipes are 6 feet below this line, so that at times of ex- 
 treme low water the pumps have to work against a head 
 fif f)nlv about ten feet more than the friction head after
 
 l82 
 
 The St. Louis 
 
 the siphon has been estabhshed. It will be noted on the 
 plan Fig. i that there is a 30'-in. by-pass from the dis- 
 charge-header to each suction-chamber. These are to 
 be used for clearing the chambers of rubbish or ice. 
 
 Oiling System : A gravity oiling system is used. Oil 
 is supplied to the engine-i)earings from three storage 
 tanks which are set on a platform between the engine- 
 room trusses 50 feet above the engine-shafts. Two tanks 
 
 are for engine-oil and one for cylinder-oil. Engine-oi3 
 runs by gravity from these tanks to pressure oil-cups 
 located on the bearings, and the cylinder-oil runs by 
 gravity to Richardson oil-pumps located on the high- and 
 low-pressure cylinder of each engine. After the engine- 
 oil has gone through the bearings of each engine it re- 
 turns by gravity to two Turner oil-filters. These 
 filters are situated in the basement of the engine-room 
 annex. After the oil passes through the filters it runs 
 into a reservoir, from which small steam-pumps supply
 
 Electrical Ha ii d book i8^ 
 
 the tanks located on the engine-room roof-trusses. Both 
 cylinder- and engine-oils are pumped from the basement 
 to the supply tanks and each tank is supplied with an 
 overtlow which runs back to the storage tanks. The 
 overflow connections are arranged so that it will be vis- 
 ible at a glance if the supply tanks on the engine-room 
 trusses are receiving the required quantity of oil to feed 
 the systems. Both cylinder- and engine-oil are run from 
 the supply tanks on the engine-room trusses to the three 
 30-in. centrifugal circulating pump engines and six fan 
 engines located in the boiler-room basement. As these 
 engines are located below the filter tanks, the waste-oil 
 is returned to the filters by a 1.5 in. motor-driven cen- 
 trifugal pump which is arranged to pump automatically. 
 
 Coal- and Ash-Handling Al^f^aratus: As shown in 
 Figs. 4 and 5, the plant is designed to have a railroad 
 track run alongside the boiler-room at the river side. 
 Coal may be brought to the plant by rail or by barge. At 
 the northeast corner of the boiler-room a coal- and ash- 
 tower is designed to be built over the railroad. The 
 upper part of the tower rests on a turntable and is capa- 
 ble of revolving in either direction. This part of the 
 tower contains all the turning, hoisting, and cracking 
 apparatus, these being steam-driven. The revolving 
 tower is equipped with a 50-foot boom and the hoisting 
 of coal is accomplished by a two-rope grab-bucket. 
 
 'i'he vertical hoist of the coal is 107 feet and the bucket 
 makes three round trips per minute, taking 1,500 lb. of 
 coal per trip. The coal is thrown from the bucket into 
 a hopper and passes b%- gravity into two crackers, and 
 from the crackers by gravity into a lower hopper, from 
 which the coal passes through valves into automatic side- 
 dumping four-ton cable cars. The cable for these cars 
 is engine-driven. The cars pass from the coal-tower 
 down one side of the 10,000 ton overhead coal-bunker 
 and back on the other side, making the circuit hack to the 
 tower and automaticallj' dropping the coal at whatever 
 point desired. The gauge of the cable road is 20.5 
 inches. 
 
 From the overhead bunker the coal is fed bv down-
 
 184 The St. Louis 
 
 spouts directly into the nicclianical stokers, uhicli are of 
 the Jones underfeed type. Each furnace is provided 
 with an individual spout. 
 
 From each furnace ash-spouts descend into an ash- 
 hopper, there heing an ash-hopper for each pair of boil- 
 ers installed. These hoppers are immediately under the 
 lower boiler-room floor and are fitted with ash-valves at 
 the bottom, through which the ashes pass into ash cars 
 running on an industrial railway in the basement. These 
 cars run to two elevators at the northeast corner of the 
 basement and are elevated to the level of the top of the 
 ash-tank which forms the lower part of the coal-tower, 
 and are run from the elevator over the ash-tank and 
 dumped into it. The ashes from this tank pass through 
 valves by gravity into the empty coal cars or out into 
 barges. 
 
 Snwkc-Stacks: For the 26 boilers alreadj- installed 
 2 brick stacks have been provided, resting on concrete 
 foundations carried down to bed rock. These stacks are 
 14 fcei mside diameter at the top and 200 feet high above 
 the foundation. 
 
 The balance of the Iioilers which remain to be deliv- 
 ered under contract and which were not contemplated in 
 the original design of the boiler room, will be provided 
 with metal stacks, ten in all. each 10 feet in diameter and 
 140 feet high above the grates of the upper-deck boilers. 
 
 Economizers: Two large sets of economizers of the 
 Green type are provided, one set for each 13 boilers of 
 the original installation. Each set consists of nine banks 
 of 20 sections, each section having fourteen 12-foot tubes. 
 Each set is guaranteed to raise 170.000 lb. of water per 
 hour 130 degrees fahr. with flue-gases entering at 500 
 degrees fahr. and water entering at ico to no degrees 
 fahr. 
 
 Traveling Crane: The engine-room is equipped with 
 a large traveling crane supported by a girder on each 
 side of the engine-room attached by brackets to the steel 
 colnmns of the engine-room walls. The crane sweeps 
 the entire space covered by engines, generators, and aux- 
 iliary apparatus. Tt has four motors operated by alter-
 
 Electrical Handbook i8=, 
 
 nating current at 200 volts, 25 cycles. It has a capacity of 
 50 tons with a speed of 10 feet per minute at the main 
 hoist, and a capacity of 10 tons with a speed of 30 feet 
 per minute at the auxiliary hoist. The bridge travel is 
 2C0 ft. per minute and the trolley travel 100 ft. per min- 
 ute. The maximum travel of the hook is 76 ft., the span 
 76 ft. and the weight 130.OCO 11). 
 
 Engine-Driven Generators: '1-hese are standard 
 Westinghouse apparatus with three-phase. 2^ cycle, 6.6co 
 volts stationary armature with the revolving field fed at 
 ICO volts direct current. The armature frame is so 
 mounted as to permit motion in a horizontal direction 
 sutlicicnt to uncover the field poles. 
 
 I'ollowing IS a tal)le showing the guarantees for the 
 performance of these machines: 
 
 1,500 kw. 3,000 kvv. 
 
 Excitation at full load : 
 
 100% power-factor. . 200 amperes at 260 amperes at 
 100 volts 100 volts 
 
 Regulation, no load Xo 
 full load : 
 100% power-factor. . 8% 8% 
 
 Efficiency. 100% power- 
 factor : 
 
 Yi load 91-5 94-25 
 
 Va load 94- 95-5 
 
 Full load 95- 95-5 
 
 Temperature rise, 90- 
 100% power-factor : 
 
 Full load 24 hrs 40 cent. 40 cent. 
 
 25% overload 24 hrs. 50 " 50 " 
 
 50% overload i hr. . 60 " 60 " 
 
 Steam '/'iirhi)ies: I he .\^hley Street i)lant will con- 
 tain four 5,cco-kw. and two 2,000-kw. turbine units of 
 the vertical Curtis tyjie. both turbine and generator being 
 built by the General Electric Comi)any. 
 
 As stated al)ove, the 2.000-kw. units are placed in the 
 south end of the engine-room opposite the 1,500-kw. 
 engine-unit ■<. The four 5,oco-kw. turbines are to be
 
 I'So 
 
 T he St. L o 11 i s 
 
 placed in the north end of the engine-room, and, togetlier 
 with their condensing apparatus and air-pumps, will oc- 
 cupy a floor space 90 ft. bj- 54 ft. as compared with 204 ft. 
 by 78 ft. for i2,oco kw. of engine-driven capacity. 
 
 Szcitchboard: 'ihe switchboard is built to accommo- 
 date eleven generating units, consisting of three 3,000-kw. 
 
 Fig. ;— .Switchboard — Ashley Street Plant 
 
 and two 1.500-kw. engine-type W'estinghouse generators, 
 four 5,oco-k\v. and two 2,oco-kw. Curtis turbine units, 
 with all auxiliary and exciting apparatus and 31 high- 
 pressure feeders. 
 
 The switchboard apparatus occupies a series of gal- 
 leries across the south end of the engine-room. There 
 are five of these, designated as mezzanine floor, first 
 (engine-room) floor, second, third, and fourth floors.
 
 Electrical Handbook 18/ 
 
 All galleries, with the exception of the first floor, have 
 railings on the side facing the engine-room. 
 
 The generator oil-switches and generator bus-bars, 
 together with all generator and feeder-control apparatus,, 
 are located on the fourth floor. On the third floor are 
 located the generator disconnecting switches and the 
 main bus-bars. The second floor contains the feeder 
 hook selector-switches and the non-automatic feeder oil- 
 switches ; also the generator field-rheostats. The first 
 floor contains the automatic feeder oil-switches and the 
 auxiliarj- low-pressure control panels. On the mezza- 
 nine floor are located the auxiliary transformers, bus- 
 bars, oil switches, and secondary switches. This ar- 
 rangement can be readily followed out by consulting 
 Fig. 6, which shows a cross-secti(in through the switch- 
 board galleries. 
 
 The switchboard apparatus and instruments are of the 
 Westinghouse make. The oil-switch and bus-bar cham- 
 bers are built of gray pressed brick with Alberene stone 
 barriers. On the two upper galleries the selector and 
 generator cables are carried in a system of brick and 
 slate ducts covered !)}• a false floor of slate plates. The 
 instrument and control wires are enclosed in iron-pipe 
 conduit throughout. 
 
 On the fourth floor the generator instrument posts 
 are located in the line of the railing and serve as stanch- 
 ions for the railings. Each generator instrument post 
 carries a power-factor meter, two alternatmg-current 
 ammeters, an indicating wattmeter and a field ammeter. 
 The .station post, which occupies a central position, con- 
 tains three voltmeters, one for each set of bus-bars and 
 one for the generator, two synchroscopes and a direct- 
 current voltmeter. 
 
 The generator control pedestals are set just back of 
 the instrument posts and in line with tluni. so that the 
 operator can see generator and instruments when work- 
 ing the control-switches. These control pedestals, which 
 are 16 in. square and 4 ft. 10 in. high, are constructed of 
 cast iron and marble and each has mounted on it the 
 following a]iparatus:
 
 i88 The St. Louis 
 
 Three oil-switch controllers, 
 
 Field-switch controller. 
 
 Field-rheostat controller. 
 
 Voltmeter receptacle. 
 
 Synchronizing receptacle. 
 
 Signal switch. 
 
 Seven telltale and signal lamps. 
 A view of the instrument posts and control pedestals is 
 shown in the cut P^ig. 7. 
 
 Back of and facing the control pedestals is a blue 
 Vermont switchboard, 44 ft. long, on which is mounted 
 the control apparatus and instruments for 31 high-pres- 
 sure feeders, generator wattmeters and station ground- 
 detectors. Each feeder has one ammeter, a power-factor 
 meter, an integrating wattmeter, two oil-switch controll- 
 ers, two mechanical switch indicators, two indicating 
 lamps and a time-limit relay. 
 
 Referring to diagram Fig. 8. it will be seen that the 
 generator cables lead first through the main oil-switch to 
 the generator bus-bar and thence through selector oil- 
 switches and disconnecting switches to one of the two 
 sets of main bus-bars. The main generator switch is 
 first closed and the machine is synchronized over one of 
 the selector switches. An electrical interlocking connec- 
 tion makes it impossible to operate the selector switch 
 other than the one over which it is being synchronized. 
 
 The bus-bar selection for a feeder is made by means 
 of interlocking hook-switches. From these the feeder 
 passes through a non-automatic oil-switch on the second 
 floor, then through an automatic oil-switch on the first 
 floor and out underground under the mezzanine floor. 
 These oil-switches and generator switches are Type C 
 size. 
 
 One set of selector and feeder switches is used to 
 supply the auxiliary high-pressure bus-bars which are 
 located on the mezzanine floor. To these bars two sets 
 of three loo-kw. transformers are connected through 
 Type E oil-switches, for supplying current to the auxil- 
 iary alternating-current low-pressure bus-bars at 2CO 
 volts.
 
 7: I c c t r i c a I H a ii d b o a k 
 
 i8g 
 
 The auxiliary and exciter switcliboanl which is lo- 
 cated at the front of tlie first-floor arallerv facing the 
 
 mmmmmm 
 
 ■ OI?0t"-S-Grc-.T10.V-TMROtK;M-S>VN/IXCM-8eV\RD- 
 
 • ,'<iJ*,\-.TL-^ ■ OT- pcy-v/w -r- 
 
 engine-room is hnilt of bine W'rmont niarhie jianels and 
 is 41 ft. long. 
 
 On the east panels of this switchboard arc mounted 
 the alternating-current JOO-volt switches and instru- 
 ments, sui)|)lying current fur the exciter motors, crane,
 
 igo The St. Louis 
 
 and other auxiliary apparatU'^. 'Die west end is devoted 
 to the exciters, battery, direct-current lighting and con- 
 trol circuits, and on the last six panels are mounted the 
 electrically-operated field switches for the generators. 
 One cable is led from each of the field switches up to the 
 second floor to the electrically-controlled field rheostat. 
 The five rheostats for the engine-driven generators are 
 of the standard Westinghouse make and the six turbine 
 generator rheostats are standard General Electric. 
 
 Tn addition to the two loo-kw. engine-driven exciter 
 units there are two lOO-kw. Westinghouse exciters direct 
 connected to induction motors. An Electric Storage 
 Battery Company battery of "8 cells, type G 39, is used 
 on the exciter l)us-l)ars. This battery is connected di- 
 rectly across the bus-bars with an end-cell switch and is 
 •charged by means of a Western Electric shunt booster 
 driven by a iJ5-volt direct-current motor. 
 
 The exciter bus-bars, which also supply current for 
 station lighting and for the electrically-operated valves, 
 are operated at a pressure of 125 volts. There are six 
 high-pressure and se\'en low-pressure valves operated by 
 direct-current motors. 
 
 The auxiliary apparatus in addition to the two exciter 
 units which is to I)e driven by 3-phase 200-volt induc- 
 tion motors are : the 50-ton crane described, with the 
 mechanical equipment ; two lo-li.p. motors driving the 
 scrapers on the Green economizers ; two 30-h.p. motors 
 driving Edwards triplex air pumps for the condensers of 
 the 2,000-kw. turbines ; tw(~i 30-h.p. motors driving 10 in. 
 centrifugal sump pumps; four 15-h.p. motors driving 
 Worthington centrifugal air-pumps for the condensers 
 of the 5,000-kw. turbines, and a number of smaller mo- 
 tors, driving pumps, tools, etc. 
 
 The building is lighted throughout l)y incandescent 
 lamps placed in rows along the galleries and relieved by 
 clusters on the pilasters. 
 
 The cables leading from the generators to the switch- 
 board are rubber-insulated and have lead sheaths up to 
 the points where they go under the false floors. All the 
 high-pressure wiring about the switchboard structure
 
 Electrical Handbook 
 
 IQI
 
 1(^2 The St. Louis 
 
 and under the false floors is rnbber-covcred, protected 
 with tire-proiit hraid. The high-pressure cables from the 
 four smaller generators are three-conductor ; those from 
 the seven large machines are single-conductor. The 
 cables from the engine-driven units arc carried out to the 
 west side of the engine-room through ducts built into 
 the engine foundations. They then enter a vitrified con- 
 duit run which is built on the mezzanine floor along the 
 west wall and swings over to the switchboard gallery col- 
 umns in a long radius curve suspended from the floor- 
 beams above. The cables for the 5,COO-kw. turbine units 
 and for the storage-battery occupy the lower ducts of 
 this run. The generator leads leave this conduit at the 
 columns and run up to the fourth gallery in deep flutings 
 made in the backs of the terra cotta which encases the 
 columns. 
 
 The cables from the exciter units and the 2,000-kw. 
 turbines which are located on the east side of the engine- 
 room are pulled into a vertical row of vitrified ducts laid 
 along the face of the east wall covered by a brick wains- 
 coting. 
 
 Ihe low pressure au.xiliary cables are all lead covered 
 and are carried on hangers made of oak and channel- 
 irons up to the points where they enter the vitrified con- 
 duit runs. 
 
 The main feeder-caliles are carried from the floor- 
 tubes under the oil-switches on glass insulators mounted 
 on lines of special oak cross-arms suspended from the 
 floor-beams of the first floor. At the south wall these 
 cables pass into the brass bells of the three-conductor, 
 lead-covered, outgoing feeder-cables. These cables are 
 carried down the wall on iron supports through the mez- 
 zanine floor and are then carried horizontally to the 
 ducts leading out to the manholes. The accompanying 
 sketch. I-^ig. g. shows the method of fanning out the cables 
 on the south wall under the first floor and the arrange- 
 ment of manholes and conduits which has been adopted 
 to lead the feeders out from the plant. These cables are 
 carried out in two groups, which are kept in separate
 
 Electrical Handbook 
 
 193 
 
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 lij^ T h c St. L (> II is 
 
 diict-runs and in separate manholes after leaving the 
 plant. 
 
 The two manholes at the south end of the plant and 
 fonr others in the immediate vicinity, which are sub- 
 merged at times by extreme high water, are made water- 
 proof and are provided with water-tight inner covers. 
 These manholes are connected by a system of drains to 
 a sump which has a 6-in. suction-pipe leading to a pump 
 in the plant. 
 
 Exciters: Four loo-kw. exciter sets have been pro- 
 vided, two of them driven by 25-cycle, 3-phase, 200- 
 volt induction motors, and two by single-cylinder, ver- 
 tical Buckeye engines. These units deliver current to 
 the exciter bus-bars at 125 volts. 
 
 THE IMPERIAL PLANT 
 
 Building 
 
 The plant is located at the southeast corner of Tenth 
 and St. Charles streets, on a lot having a frontage of 
 235 ft. on St. Charles street by 85 ft. 2.3 in. on Tenth 
 street and 98 feet on the east line. An exterior view of 
 the building is shown in Fig. i. Fig. 2 gives a sec- 
 tional view of the building, and Fig. 3 a plan of the 
 engine and dynamo room. 
 
 The main building is of dark red brick, three stories 
 high above the basement and of the same dimensions as 
 the lot above the street level. The second story is omit- 
 ted everywhere except over the main office, thus giving a 
 clear height in the engine and boiler rooms of 30 ft. The 
 third story, which is 15 ft. high, is devoted to store rooms, 
 testing department, etc. The entire structure is fire- 
 proof. All floors are of cinder concrete carried on cor- 
 rugated iron arches sprung between I beams. The roof 
 is of book tile with composition gravel covering. En- 
 gine and boiler rooms extend the entire length of the 
 building, and are separated by a division wall having fire 
 doors at all openings. Beneath the engine room are the 
 storage batteries, extending partly under the sidewalk. 
 Beneath the boiler room is space for coal storage, ash
 
 Electrical II a ii d b o o k 
 
 195 
 
 handling, and the location of condensing apparatus and 
 piping. Ihe floor of the engine room is laid with hex- 
 agonal tile, and the walls for 6 ft. above the floor are 
 wainscoted with marble. On part of the lot just east of 
 the brick building is erected a temporary building of 
 wood and corrugated iron sheltering a 1,500-kw. West- 
 inghouse unit and the city arc lighting plant. 
 
 Boilers: There are four 445 h.p. and eight 360 h.p. 
 
 t.... i <:»■>' Suiiu.\ ui rt- 
 
 Heine boilers. Each boiler has a guaranteed efficiency 
 of 70 per cent, of the calorific value of the coal at any 
 load between rating and 20 per cent, above. This is 
 equivalent to evaporating 7.JI pounds of water per pound 
 of Mount Olive Illinois nut coal of 10,600 B.t.u. The 
 boilers are designed for a working pressure of 175 pounds 
 per square inch, and were tested under a hydrostatic 
 pressure of 250 jxhukN. I'lu- entrainnient is guaranteed
 
 1(^6 
 
 The St. Louis 
 
 to be less than i per cent, at rating, and not more than 
 1.5 per cent, at one-third above rating. 
 
 Chimneys: The boilers are served by three steel 
 stacks, two 7 ft. and one 8 ft. inside diameter, 140 ft. high 
 above street level. They are self-supporting and un- 
 lined. The bases are supported upon and rigidly bolted 
 to massive brick foundations 14 ft. deep, and which are 
 solid except for the ash-car passage which extends 
 through them. 
 
 Coal and Asli Handling: Coal is dumped from wag- 
 ons through openings in the alley wall of the boiler room 
 on the floor directlv in front of the boilers, which are 
 
 Enaime Rooh 
 
 fired by hand. The ash handling plant is of simple and 
 economical design, and consists of a system of cars, 
 tracks, elevator and overhead ash-bins. The cinders and 
 ash from the lower grates drop directly into a metallic 
 ash-hopper under each boiler. Running east and west 
 immediately under these hoppers there is a narrow gauge 
 track. The ash is dumped from these hoppers into small 
 cars, which are pushed by hand along the track to an 
 elevator, on which the cars are raised. The ash is then 
 dumped into an overhead ash-bin, from which it runs by 
 gravity into the wagons in the alley. 
 
 Steam Engines: There are two engines (Fig 6) of
 
 Electrical Handbook ipy 
 
 the Williams vertical two-cylinder, cross-compound, con- 
 densing, automatic cut-off pattern, built by William Tod 
 & Co. of Youngstown, Ohio, and designed for direct con- 
 nection to the dynamos by means of the "Arnold Sys- 
 tem." The east engine. No. i, is of 750 i.h.p., and is de- 
 signed for driving one 500-k\v. generator. Engine No. 
 2 has double the capacity, and is similar in design to No. 
 I. Both are designed to run at 150 rev. per min. 
 
 Their dimensions are : 
 
 Engine No. i — Cylinders, 18 in. and 40 in. by 30 in. 
 
 Engine No. 2 — Cylinders, 26 in. and 57 in. by 30 in. 
 
 A 1.500 h.p. engine, designed and built by the Lake 
 Erie Engineering Works, Buffalo, N. Y., has been in- 
 stalled, direct connected to two 500-kw. generators. Di- 
 mensions of cylinders. 23 in. and 48 in. by 36 in. ; speed, 
 120 rev. per min. 
 
 Another 2,250 h.p. cross-compound horizontal engine, 
 built by the Fulton Iron Works of this city, has been 
 installed for operating a i. 500-kw. Westinghouse gen- 
 erator. Dimensions of cylinders, 34 in. and 56 in. by 
 54 in. ; speed, 80 rev. per min. 
 
 Condensers, Ptitnps and Cooling Toicer: The con- 
 densing plant consists of one Worthington surface con- 
 denser, one Worthington cooling tower, two air pumps 
 and two circulating pumps of the rotary type. The rated 
 capacity of the plant is 33,750 lb. of steam per hour, but it 
 will take care of overloads up to 49,500 lb. per hour with 
 but slight reduction in vacuum. It is guaranteed to pro- 
 duce a vacuum of not less than 22 in. at above rating and 
 under the worst conditions of service ; 25 in. under fair 
 and average conditions, and 26 in. under the best. The 
 condenser has 34,000 square feet of brass tube cooling 
 surface. 
 
 The cooling tower, located on the roof, is 18 ft. in 
 diameter, 29 ft. high and its filling or cooling surface is 
 composed of galvanized iron pipe cylinders. It has du- 
 l)!icatc fans located on opposite ends of the same shaft 
 drawing air into the tower. These fans are driven by a 
 belted motor in pent house on top of the building. 
 
 There are two air pumps, one of sufficient capacity to
 
 /p<§ The St. Louis 
 
 handle the water for the 1,500 h.p. engine, and the other 
 of sufficient capacity for 750 h.p. engine, and two inde- 
 pendent rotary circulating pumps of the same capacities. 
 These pumps are driven by direct-geared motors, so de- 
 signed that the speed may be varied at least S3 i-3 P"-''' 
 cent. 
 
 It will be noted from the capacity of condensing appa- 
 ratus installed that a large part of the plant is now run- 
 ning non-condensing. 
 
 Power Traiisiiiissioii System: The two Williams en- 
 gines and three generators are connected by means of 
 the Arnold system of power transmission (see Fig. 6). 
 consisting of quills and internal shafts with double bear- 
 ings, connected by magnetic clutclies. The arrangement 
 was intended to make it possible to drive any one, two or 
 all three of the 500-kw. generators, and either one or both 
 of the boosters, from the large engine in case of accident 
 to the small engine. Two generators and one booster 
 may also be handled by the small engine in case of acci- 
 dent to the large one. 
 
 The generators are connected to the engines by means 
 of magnetic couplings, so arranged that either interme- 
 diate generator of booster may be disconnected from one 
 engine and connected to the other while all are in motion. 
 When it is desired to start up a generator, it is brought 
 up to speed as a motor and then connected to the engine 
 by the magnetic clutches. 
 
 Pipe Work: The entire high pressure system is de- 
 signed to operate under a working pressure of 175 pounds 
 per square inch, and was tested to 250 pounds hydro- 
 static pressure. All fittings are extra heavy. All pipe 
 above three inches in diameter has flanged couplings and 
 fittings. All valves on live steam pipes and on 
 the feed water connections under boiler pressure are 
 bronze seated. All valves above 10 inches in diameter 
 are by-passed. The cylinder jackets, reheaters, sepa- 
 rators, steam headers and the entire pipe system is 
 drained by means of the Holley system. There is a com- 
 bined hot well and oil filter located between the con- 
 denser and boiler feed pumps. All the pipes are cov-
 
 Electrical Handbook ipp 
 
 ered with magnesia. Each engine has a Cochran sepa- 
 rating receiver located near the main throttle valve. Oil 
 extractors are located between exhaust pipe and con- 
 densers. A suitable blow-off tank is provided and con- 
 nected to boiler furnaces, oil extractors and other hot- 
 water drains, with suitable discharge to catch-basin, 
 which in turn overflows to sewer. 
 
 Ciciicrators and Boosters: There are three 500-volt, 
 constant potential, electric generators, built by the Sie- 
 mens & Halskc r'lectric Compan\- of America, of the 
 internal iron-clad armature type. L'hey are designed spe- 
 cially to suit the system of power transmission adopted. 
 The field frames of the generators may be slid parallel 
 with the shaft a sufficient distance for reaching the arma- 
 ture for repairs. The capacity of each generator is 500 
 kw. at 5J5 volts when operated at 150 rev. per min. 
 
 There are two separately excited shunt-wound boost- 
 ers, each of 50 kw. capacity at 150 rev. per min., and 
 capable of carrying 500 amperes and delivering any volt- 
 age from zero to 130 volts. The boosters are of the same 
 general con.struction and design as the generators, except 
 that the field frames are divided vertically. There are 
 also two 30-kw. Western Electric boosters direct con- 
 nected to a soo-volt motor. 
 
 There are two 500-kw., 500-volt Siemens & Halske 
 generators operating at 120 rev. per min. and driven by 
 the Erie engine. These dynamos are similar in design 
 to those already described except that their rating is more 
 liberal and they have greater overload capacities. The 
 generator driven by the Fulton engine is a shunt wound 
 1. 500-kw., 500-volt Westinghouse machine, designed to 
 run at 80 rev. per min. 
 
 Rotary Converters: There are two 500-kw. West- 
 inghouse rotary converters which deliver direct current 
 at 500 volts to the main bus-bars, running in parallel with 
 the steam driven generators. These rotaries are supplied 
 with 3-phase, i5-cycle current at 6,600 volts from the 
 Ashley Street plant. This voltage is stepped down 
 through three 187-kw. air-cooled transformers for each
 
 200 The Si. L o II i s 
 
 machine. Two 50-k\v. induction regulators and two 
 blowers are installed in connection with this apparatus. 
 
 C"//_v Lighting Station: In the temporary building 
 east of the main engine room are installed six sets of 
 series arc lighting apparatus. Each set consists of a 200 
 h.p., 500-volt Western Electric Company motor driving 
 two no-light 6.8 ampere Western Electric Company 
 series, direct-current, arc lighting machines. 
 
 S%i.'itchhoard: The switchboard at the Imperial plant 
 is divided into five separate parts ; the main board, the 
 auxiliary board, the arc motor board, series arc lighting 
 board, and the 6,600-volt alternating-current board. 
 
 The main board is provided with two sets of bus- 
 bars for the 250-500 volt direct current distribution. It 
 consists of twenty panels of two-inch black enameled 
 slate as follows : Four panels for the rotary converters ; 
 six panels for the generators ; two booster panels ; two 
 battery panels, and six feeder panels. 
 
 The auxiliary board contains switches and apparatus 
 for operating the auxiliary motors. (In this connection 
 it might be stated that the plant was designed to have all 
 pumping apparatus motor driven, but, with the exception 
 of the air pumps and cooling tower, all of this apparatus 
 has been replaced with steam driven apparatus.) 
 
 The arc motor board consists of three marble panels 
 containing apparatus and instruments for starting and 
 controlling the six 200 h.p. Western Electric Company 
 motors. 
 
 The series arc lighting switchboard consists of three 
 marble panels containing instruments and plug and cord 
 switches for twelve series arc lighting machines and 
 twelve city lighting circuits. 
 
 The 6,600-volt switchboard consists of three panels 
 having the necessary oil switches and instruments for 
 one 2,000-kw. incoming feeder and for the two sets of 
 air cooled transformers for tw^o 500-kw. Westinghouse 
 rotaries. 
 
 Storage Battery: There are 296 cells of the Electric 
 Storage Battery Company's accumulators, each contain- 
 ing fourteen positive ]\Ianchester-type plates and fifteen
 
 E I c c t r i c a I H a n d b o o k 201 
 
 negative chloride plates. These are contained in lead- 
 lined wooden tanks which are supported on large porce- 
 lain insulators. The capacity of this battery is 2,000 am- 
 pere hours at a discharge rate of 250 amperes, and it is 
 capable of maintaining a niaxinnun discharge rate of 
 i,coo amperes for one hour. It is guaranteed to give a 
 discharge of 500 kw. for one hour without a drop in 
 pressure below 1.7 volts per cell. 
 
 The battery as mentioned above is located in the base- 
 ment, partly under the engine room, partly under the 
 sidewalk. 
 
 The growth of this plant is indicated by the ma.ximum 
 output as given below, for the end of the first, second, 
 and fifth year of its operation. The following tabulation 
 gives also the average output for 24 hours and the load 
 factor, or the percentage that the average output is to the 
 ma.ximum : 
 
 
 Average 
 
 Maximum 
 
 Load 
 Factor 
 
 T.o.-id 1st year.. 
 
 2,200 amperes 
 
 5,600 amperes 
 
 40% 
 
 Ijiad 2(1 year. . 
 
 6.350 
 
 13,000 " 
 
 50% 
 
 Load 5th year.. 
 
 11,000 " 
 
 21,000 " 
 
 52% 
 
 MISSOURI EDISON ST.ATION "A" 
 
 This station was the one originally built by the ^lis- 
 souri I'^lectric Light & Power Company, 'ihe building is. 
 135 ft. by 155 ft., being divided longitudinally into two 
 rooms, one 152 ft. by 63 ft., containing engine and gen- 
 erator plant and switchboard; the other, 152 ft. by 67 ft., 
 CDUtainiug the boiler i)laut. The construction is of brick 
 and stone, with ircm and slate roof. The building is one 
 story, and 35 feel high. 
 
 The generating apparatus of this station consists of 
 three 1,200 h.p. three-cylinder compdiuid engines, built by 
 the Lake Erie luigineering Works, direct coupled to 
 three (Sco-kw. alternating-current generators, built by 
 tlic Westiughduse I'.kelric and .Manufacturing Com- 
 pany; one 20 in. and 36 in. by 18 in. Westinghouse com- 
 pound engine direct connected to a Westinghouse dy-
 
 2o2 The St. Louis 
 
 namo, i.ioo volts, 136 amperes, 212 rev. per min. ; 
 three 120 li.p. Westinghouse compound engines direct 
 connected to two 75-k\v. Westinghouse 125- volt direct- 
 current generators and one ioo-k\v. General Electric 125- 
 volt direct-current generator, all three being used for 
 exciters. The steam is generated by fourteen 208 h.p. 
 and four 235 h.p. Babcock & Wilcox boilers. 
 
 Generators: The 8oo-kw. generators are designed 
 to operate at 180 rev. per min. and deliver current at a 
 pressure of from 1,100 to 1,300 volts at a frequency of 60 
 cycles. They are of the stationary field type, being sim- 
 ilar in design to the modern direct-current railway gen- 
 erator of large size, the commutator, of course, 1)eing re- 
 placed by collector rings. The winding is so designed 
 that these machines may be used either single-phase or 
 two-phase as desired, the entire amount of copper being 
 utilized in circuit when operated in either way. The rat- 
 ing of these generators is based on their single-phase 
 capacity, but a large margin for overload was provided 
 in their design, and they are regularly operated for sev- 
 eral hours per day during the winter months at an output 
 of 1,200 kw. each. With this load the rise in temperature 
 of all parts of the machines is hardly appreciable. 
 
 The armatures are ten feet in diameter and weigh 
 about 80,000 pounds, providing ample fly-wheel capacity 
 within themselves without any additional wheel. The 
 mechanical features of each of these generators are so 
 arranged that the entire field frame may be moved in a 
 direction longitudinally with the shaft, by means of suit- 
 able screws, to a position where the armature is com- 
 pletely uncovered for inspection and repairs and where 
 field coils may he removed from the pole pieces with ease. 
 
 Engines: 1 he engines, being provided with three 
 cylinders, distribute the power through three cranks 
 placed at angles of 120 degrees. 
 
 The regulation of the engines is effected by governors 
 of the shaft type, but of special design. Connected to the 
 rocker arm operating the high pressure admission valves 
 on each engine is a double acting air compression cylin- 
 der. This acts as an inertia balance to arrest the motion
 
 ]^ I c c f r 1 c a I Handbook 20^ 
 
 of the valve at the end of each stroke, storing up energy, 
 which is dehvered to the valve again on beginning the 
 new stroke. The two ends of this compression cylinder 
 are connected to each other through a by-pass pipe and 
 hand valve, by means of which the amount of compres- 
 sion can be controlled at will. The effect of this inertia 
 balance is to relieve the governor of a great deal of the 
 pressure which would be thrown upon it at certain por- 
 tions of each revolution. By varying the amount of re- 
 lief to the governor afforded in this way, by means of the 
 by-pass valve, the speed of the engine may be varied 
 between 5 and 10 per cent. 
 
 Exciters: The exciters are of the type of direct- 
 coupled, direct-current, multipolar generators l)uilt by 
 the Westinghouse and General Electric companies. Each 
 is of a capacity sufficient to e.xcite the fields of all the 
 generators in the station, two relays, or spare generators, 
 therefore, being ready at all times in case of accident. 
 
 Boilers and Smokestacks: The boilers are of the 
 Babcock & Wilcox type, and are operated at 150 lb. pres- 
 sure. The furnaces are designed for hand-firing. 
 
 The products of combustion are led through under- 
 ground flues to two steel smokestacks, one 150 ft. high 
 by ID ft. in diameter, and the other 135 ft. high by 8 ft. in 
 diameter. These stacks are bolted at the base to con- 
 crete foundations. 
 
 Szvitchboard: The switchboard is built of white Ital- 
 ian marble and is 58 ft. long and 16 ft. high. It is 
 constructed with two floors at different levels^ and a lib- 
 eral basement is provided for cables, rheostats and feeder 
 regulators. The upper portion of the board provides 
 room for 56 feeders and the lower portion will accommo- 
 date all the apparatus for regulating and controlling six 
 generators. The lio.nrd is so designed that all generators 
 are oi)erate(l independently and the feeders grouped at 
 will on any generator desired. The utmost flexibility of 
 operation is thereby provided for. The feeders may be 
 switched at will from any one of the generator busses to 
 any other, without interrupting the current for more 
 than a fraetion;tl ])art of a second.
 
 204 The St. L o II i s 
 
 Each feeder is provided, in addition to its switch, witli 
 an ammeter, voltmeter and potential regulator. Each 
 potential regulator consists of a regulating transformer, 
 which is made by means of suitable sw'itching devices to 
 add more or less of its secondary potential to that of the 
 feeder. Each regulator is hung under and supported by 
 the upper floor of the switchboard and is provided with a 
 switch dial controlled by a wheel on the front of the 
 board within reach from the main station floor. By 
 means of these switch dials the pressure of each feeder 
 may be independently raised or lowered iS per cent., 
 making a total possible independent variation of 36 per 
 cent. 
 
 The entire regulation of both feeders and generators 
 is accomplished from the main floor of the engine room, 
 the second floor of the switchboard being used only when 
 feeder switches are to be thrown. A gallery is provided 
 at a third level along the rear of the switchboard, from 
 which feeder fuses, lightning arresters, ammeters, and 
 voltmeters are accessible. 
 
 In addition to an indicating wattmeter, each generator 
 is provided with a Thomson recording wattmeter, and 
 by means of these recording wattmeters the entire station 
 output is recorded. No feeder is operated nor regulation 
 attempted without the use of pressure wires. All the 
 indicating instruments were made by the Wagner Elec- 
 tric ^lanufacturing Company and are of their horizontal 
 scale illuminated dial type, made dead beat by the use of 
 oil in which their mechanism moves and is retarded by 
 suitable aluminum vanes. 
 
 This switchboard was constructed from the designs of 
 the lighting company's engineers. The greater part of 
 the current used for alternating-current incandescent 
 lighting, constant potential arc lighting and alternating- 
 current motors is distributed through this switchboard. 
 Tie lines of large capacity connect the switchboard of 
 this station with that of station "B." 
 
 Opening from the basement under the switchboard 
 and extending at a still lower level is the main cable ter- 
 minal vault or tunnel through which all cables are led
 
 Electrical H a ii d b o o k 20^ 
 
 troiii the underground conduits to the switchboard. This 
 vault is 50 ft. long. 9 ft. wide and 7.5 ft. high. Along its 
 side are arranged adjustable cable racks, by which all 
 cables are supported and carried to their proper position 
 on other racks provided under the switchboard, which in 
 turn carry them to their respective panels. 
 
 ^IISSOURI EDISON STATION "B" 
 
 This station was originally built I)y the Municipal 
 Electric Light and Power Company. Since the property 
 was acquired by the Edison Illuminating Company, both 
 the building and steam apparatus have been almost en- 
 tirely remodeled and a very large amount of new ma- 
 chinery has been installed. The main building, contain- 
 ing the engine room, is 105 ft. long by 96 ft. wide, and 
 was originally constructed with four stories. Most of 
 the second floor, which contained shafting and clutch 
 pulleys has been removed, thereby increasing the height 
 of the engine room to -'8.5 ft. Across the street from 
 this building is another, 108 ft. long by 57 ft. wide, con- 
 taining the boiler plant. The extreme height of this 
 building is 60 ft. In this are placed sixteen 350 h.p. 
 Heine water tube boilers. The floor of this boiler room is 
 23 ft. below the street level, and connecting it with the 
 engine room across the street is a large room excavated 
 under the street, with floor at the same level as the boiler 
 room proper. This room is 50 ft. long by 50 ft. wide 
 and in it are located the heaters and the main .steam and 
 exhaust pipe lines running from the boiler room to the 
 basement of the engine room. The street above is sup- 
 ported by iron columns and I-beams. 
 
 In the engine room are located one 2,000 h.p. cross- 
 compound 1 laniiit()n-Ci)rli>s engine, directly connected to 
 a i,300-k\v. single -phase generator l)uilt by the General 
 Electric Company; one 1.2CO h.]). cross-compound Ham- 
 ilton-Corliss engine, directly connected to an 800-kw. 
 alternating-current generator built by the General Elec- 
 tric Company; one 1.2CK) h.p. simple Hamilton-Corliss
 
 2o6 The St. Louis 
 
 engine, direct connected to an 8oo-kw. (ieneral Electric 
 alternating-current generator; one 750 h.p. simple Ham- 
 ilton-Corliss engine, direct connected to a 500-k\v., 500- 
 volt, direct-current General Electric generator; two 300 
 h.p. Westinghouse compound engines belted to two 200- 
 kw., 500-volt, direct-current generators. Three 125 h.p. 
 Westinghouse compound engines direct connected to 
 three loo-kw., 125-volt. direct-current General Electric 
 generators used for exciters are also located on the en- 
 gine room floor. 
 
 Along one wall of the engine room, 18 ft. from the 
 floor, is the main switchl)oard, supported from the wall 
 and partly hung from the girders overhead. The fourth 
 floor is used for repair shops and storage. 
 
 Steam Piping: All of the steam piping in this station 
 is placed under the main floor in suitable basement pas- 
 sages between the engine foundations. A duplicate steam 
 pipe system provides each engine with a double steam 
 connection. 
 
 Boilers: The boilers are placed in batteries of four 
 boilers each and are connected by steel flues, lined with 
 fire brick, to a single steel smokestack. The furnaces are 
 all arranged for hand firing. 
 
 Smol^estaclc: The smokestack is of steel construc- 
 tion, lined with fire brick to a point 60 ft. above the fur- 
 nace grates. It is 13 ft. in diameter and 204 ft. high. 
 The base is bolted to massive foundations surrounded 
 with concrete, covering it to a depth of about 6 ft. This 
 smokestack successfully withstood the severe tornado 
 which visited St. Louis about seven years ago, although 
 it was well inside of the edge of the path of the storm, 
 and most of the buildings surrounding it were unroofed 
 and more or less completely demolished. A massive 
 brick smokestack at a street railway power house, less 
 than half a mile distant, was lifted bodily from its foun- 
 dations by this same storm and dropped a shapeless pile 
 of bricks within 20 feet of its former location. 
 
 Coal Handling: Above the boilers a large coal-bin is 
 built, occupying the entire width and length of the build- 
 ing. This bin is constructed of steel, supported on I-
 
 E I c c f r i c a I H a ii d b o o k 2oy 
 
 beams and columns, the sides being sufficiently inclined 
 to deliver the coal to a central position, from whence it 
 descends through iron chutes to the l)oiler room floor. 
 Coal is delivered to this storage bin from wagons in the 
 alley running along the other side of the Iniilding. The 
 ash is elevated by conveyors to overhead bins, whence it 
 can be dumped into cars. 
 
 Electrical Generators: The alternating-current gen- 
 erators in this station at the time of their construction 
 were the largest alternating-current generators ever 
 built, and the largest in output, with the exception of the 
 generators at Niagara Falls, which, however, run at 
 much higher speed. Their capacity, when operated 
 single-phase, is i,ooo kw. 
 
 In addition to the single-phase winding, another 
 winding was provided in which current is generated dif- 
 fering in phase 90 degrees from the main winding. This 
 quarter-phase winding can be connected so that the gen- 
 erators may be operated on the so-called monocyclic sys- 
 tem. The generators are now operated at 1,200 volts on 
 single-phase only, as the company has adopted the single- 
 phase system as most suitable for its general distribution 
 of current for light and power. 
 
 The armatures of these generators are constructed 
 without polar projections, the copper bars forming the 
 winding being embedded in slots. They are 16 ft. in di- 
 ameter and weigh 100,000 lb. each. There are 80 field 
 poles and the shaft is 11 in. in diameter, this enormous 
 mass being provided to take the place of the fly- 
 wheel and to give the engines a very uniform angular 
 velocity. A large margin for overloading was allowed 
 in the design of these machines. The frequency adopted 
 by the company for its entire system is 60 cycles, and the 
 armatures revolve at go rev. per min. 
 
 Located near these generators are three loo-kw. ex- 
 citer generators, directly connected to compound engines. 
 These exciter generators are of the General Electric type 
 of multipolar direct-current dynamos and deliver current 
 at a pressure of 125 volts. 
 
 Sicilclihoard : .\s in station "A," the main switch-
 
 2o8 The St. Louis 
 
 board is so located along one of the walls of the engine 
 room that it forms a gallery above the engines and gen- 
 erators. From its floor every part of the engine room 
 can be seen and signals exchanged between engine tend- 
 ers and switchboard operatives. 
 
 The switchboard is constructed of white Italian 
 marble, mounted in panels on an iron framework. The 
 flooring is all made of black slate, as in the switchboard 
 at station "A." The central part of the board is occupied 
 by switches, regulating devices and instruments for the 
 alternating-current generators and exciters ; on either 
 side are the feeder panels containing the necessary 
 switches, regulating devices, and instruments for each 
 feeder. Beyond these feeder panels, at one end of the 
 board, are located the switches, devices, and instruments 
 necessarj' for controlling all the 500-volt generators and 
 feeders. Each alternating-current feeder takes up a 
 space on the switchboard panels i ft. in width and 6.5 ft. 
 in height. 
 
 Presext Distributiox Systems 
 
 Alternating Current: The present underground al- 
 ternating current distribution system of the Union Elec- 
 tric Light & Power Company, supplied from the Mis- 
 souri-Edison plants, consists of 1.150-volt primary feed- 
 ers with pressure wires, feeding transformers which are 
 located in the manholes. All manholes in the joint sub- 
 way were constructed with square covers in order to 
 admit of the installation and removal of these transform- 
 ers. The underground transformers are all oil-cooled 
 and are rated at no kw. each, each transformer being 
 supplied by an 1.150-volt primary feeder of 150,000 cir. 
 mils cross section. The secondaries of these transform- 
 ers are connected by three 1,000,000 cir. mils lead-covered 
 cables to the bus-bars of large cast iron junction boxes, 
 also situated in the manholes; these junction boxes sup- 
 plying three-wire secondary cables and Edison tubing. 
 This system is very complete, and has service on prac- 
 tically every street in the underground district. The 
 pressure wires for the feeders in this system are con-
 
 Electrical Ha it d b o o k 2op 
 
 nected to the bus-bars in the junction boxes, so that 
 transformer drop is included with feeder drop, and 
 standard pressure can be maintained at the junction 
 boxes b}' means of booster transformers located in the 
 station on each feeder. These feeders are fused in the 
 station, and the secondary feeders from the transformers 
 to the bus-bars in the junction box are also fused, so that 
 in the event of trouble on either feeder or transformer 
 otiicr transformers on the system are protected. The 
 neutral of the secondary- system is not fused and is 
 grounded. The outside wires within any section are all 
 connected into a network through fuses in the junction 
 boxes. The feeders are supplied from single-phase ma- 
 chines. Under this system the underground district is 
 divided up into a number of sections, so that any one 
 section will at no time exceed the safe load of its gener- 
 ator. The Missouri-Edison alternating equipment was 
 the first large installation of its kind in the United States. 
 Due to angular variation in speed, it has never been 
 found practicable to run the generators in parallel. 
 
 This same general system is used for the supply of 
 alternating current outside of the underground district. 
 The entire city is generally well covered with a sj'stem of 
 1.150-volt mains, except that portion lying north of Cass 
 and Easton avenues. The mains are divided up into 
 separate networks, each of which is supplied at the most 
 advantageous point by a feeder ; pressure wires being 
 taken back from the feeder end at primary pressure. In 
 districts where the customers are located sufficiently 
 close together to make it profital)lc. the primary mains 
 are paralleled by three-wire secondary mains, which are 
 sui)plicd at intervals by transformers hung on the poles. 
 The transformers vary in size from 5 to 25 kw. Before 
 transformers are installed, the probable maximum and 
 average loads are carefully calculated, and the calcula- 
 tions arc later checked by installing a Wright discount 
 meter on the primary nf tiie transfdrnuT. Readings are 
 taken of these discount meters three or four times a year, 
 as the seasons change. Ihis enables the size transformer 
 to be installed on any particular secondary to be very
 
 210 The St. Louis 
 
 accurately gauged. The labor of reading these discount 
 meters is performed by emergency men on Sundays or at 
 other times when the weather is good and their services 
 are not required at their regular duties. 
 
 The pressure on overhead feeders is maintained at 
 standard at feeder end by means of the pressure wires, 
 which are led back to the station, and by booster trans- 
 formers installed in the station. 
 
 Feeders are connected to the network of the mains at 
 the feeding point through single-pole knife switches in- 
 stalled on the pole. Protection against dead short-cir- 
 cuits or grounds is obtained by fusing feeders in the 
 station. Each main branch of the network is controlled 
 by single-pole switches installed on the poles, so that in 
 the event of trouble on a network the trouble-man by 
 going to the feeder end can tell at once whether trouble 
 is on the feeder or on the network, and by opening the 
 switches installed on the branches can locate the branch 
 in trouble. This allows the greater portion of the circuit 
 to be kept in operation while trouble is being located and 
 remedied. These circuits are all single-phase, and derive 
 their power from single-phase machines, which are not 
 operated in parallel for the reasons above mentioned. 
 When the load increases or decreases, feeders are trans- 
 ferred from one bus to another by means of oil transfer 
 switches and plug selector switches, each generator hav- 
 ing a separate bus. 
 
 Direct Current: The direct-current distribution sys- 
 tem of the Union Electric Light & Power Company is 
 a three-wire Edison system, operating at a pressure of 
 235-470 volts at the feeder ends. This system also quite 
 completely covers the underground district and very gen- 
 erally covers a section outside of the underground dis- 
 trict at a radius of from 2.25 to 3 miles from the Tenth 
 and St. Charles streets, or Imperial station. The entire 
 system is a network, practically without fuses up to the 
 customers' installation. This system was also the first 
 large high voltage three-wire system in the United 
 States. In the underground district, this system consists 
 of three conductor lead-covered main cables joined to-
 
 Electrical H a n d b o o k 211 
 
 gether at intersecting points through cast iron junction 
 boxes located in the manholes. Copper catches are used 
 in these junction boxes having a cross section sufficiently 
 large that a cable in trouble will generally burn itself 
 clear before melting the catch. Feeders are connected to 
 the junction boxes through catches of such a cross sec- 
 tion that they will not melt out under any circumstances ; 
 trouble on feeders being cleared entirely by burning. 
 The neutral in the main cables is the same size as the 
 outside wires. The mains vary in size from No. 2 B.&S. 
 to 250,000 cir. mils. Feeders are 500,000 cir. mils and 
 1,500,000 cir. mils, having neutrals of 000 B.&S. and 500,- 
 000 cir. mils respectively. Two 500,000 cir. mils feeders 
 are made up with a 000 B.&S. neutral into a three-con- 
 ductor cable, having pressure wires in the interstices. 
 The 1,500,000 cir. mils feeders are single conductor and 
 are supplied with a separate three-conductor pressure 
 cable. In the underground district, most of the feeders 
 are 1.500,000 cir. mils and are not supplied with separate 
 neutrals leading back to the station, the feeder neutral 
 system being a network of 500,000 cir. mils single-con- 
 ductor cables. Rubber insulation has been used exclu- 
 sively for the three-conductor main cables, and both 
 rubber and paper have been used with equal satisfaction 
 for the feeders. 
 
 The Imperial station being located within the under- 
 ground district, feeders reaching out into the overhead 
 district are carried underground for a portion of the dis- 
 tance. These feeders are carried through conduit to the 
 limit of the underground district and there led up the 
 side of a terminal pole, on which is located the terminal 
 head and lightning arresters. Five hundred thousand 
 cir. mils weather-proof wire is used U) continue feeders 
 in the overhead district. 'I'hese feeders are cut into the 
 network of mains, at the most advantageous points, sol- 
 idly, and have neither catches or fuses in circuits. The 
 pressure wires arc carried on the same insulators that 
 carry the feeder cables. 
 
 The Imperial station being located in almost the exact 
 centre of its load, enables it to distribute current over
 
 212 The St. Louis 
 
 this large area with two sets of bus-bars, at the same time 
 maintaining very close regulation ; the regulation within 
 the underground district being at all times within 2 per 
 cent, above or below standard pressure, and on all the 
 feeders reaching out into the overhead district, the varia- 
 tion at no time exceeding 5 per cent, and being generally 
 within 3 per cent. The regulation on this system is 
 aided by a storage battery having a capacity of 500 kw. 
 hours at the one-hour rate, battery being located in the 
 Imperial station. 
 
 On account of the generalh- untried condition of high- 
 voltage lighting apparatus, it was considered advisable 
 when this sy.stem was first put in operation, about six 
 years ago, to connect all customers two-wire, balancing 
 one customer against another. This practice was con- 
 tinued for two or three years, when three-wire connec- 
 tions were adopted to aid in keeping the load balanced. 
 Newly W'ired buildings, or buildings in which the wiring 
 is thoroughly overhauled and put in good order, are con- 
 nected three-wire throughout, the same as on any three- 
 wire system. Considerable trouble was experienced in 
 the beginning in obtaining incandescent lamps which 
 would not short-circuit or explode and burn up the socket 
 and cord. This trouble has been almost entirely elim- 
 inated, instances of lamps short-circuiting at the present 
 time being extremely rare. Difficulty was also at first 
 experienced in obtaining arc lamps which gave a satis- 
 factory white light and at the same time did not consume 
 an abnormal amount of current. The first lamps in- 
 stalled were 2^^-ampere lamps using J/^-inch carbons. 
 These lamps drew an arc an inch and three-quarters long 
 and produced a very unpleasant light. Lamps consuming 
 y/i amperes and with the length of arc somewhat short- 
 ened, using Yz-'inch. carbons, were soon substituted, and 
 gave perfect satisfaction to the customer, but were ineffi- 
 cient. These lamps were later rebuilt to use ^-inch car- 
 bons and the current reduced to 2^ amperes, this lamp 
 now being the standard single burning direct. current arc 
 lamp of the company. Lamps burning two in series and 
 taking from 5 to 5^2 amperes have been installed in large
 
 Electrical Handbook 21^ 
 
 numbers wherever the number of lamps taken by a cus- 
 tomer warranted using lamps of this character. These 
 lamps, of course, are just as efficient as d.\\y direct-cur- 
 rent, low-voltage lamp. 
 
 With new customers formerly supplied from a low- 
 voltage system it has generally been found that the only 
 changes necessary in order to fit the installation for 235- 
 470 volts has been to change cut-outs, switches and sock- 
 ets. At first thought this would appear to be a heavy 
 expense for a company to incur. It has been found, 
 however, that the labor cost of doing this work was sur- 
 prisingly low, due to keeping a force of men thoroughly 
 familiar with the requirements and expert in making the 
 changes. 
 
 Almost every conceivable class of service has been 
 connected to the direct-current lines; installations having 
 a connected kilowatt capacity as high as 600 being at 
 present supplied. 
 
 It was feared in the beginning that fires might be 
 started by introducing the higher voltage on old wiring. 
 Experience has shown, however, that fires which can be 
 traced to the introduction of this voltage into buildings 
 are extremely rare, and that where such has been the 
 case a fire would probably have resulted had any other 
 system been installed. The reason for this is probably 
 due to the fact that a slight ground or short-circuit is 
 immediately developed and the fuses blown on the high- 
 voltage system, smouldering or slow burning grounds 
 being unknown. The neutral of the entire system is 
 well grounded in the station. 
 
 General Pl.\n of Futike Distribl'tion 
 
 The consolidation of the Citizens' Electric Lighting 
 & Power Company, the Imperial Electric Light, Heat & 
 Power Company, and the Missouri-Edison Electric Com- 
 pany into the Union Electric Light & Power Company 
 gives the latter company three separate and distinct dis- 
 tribution systems, at present supplied from the Missouri- 
 Edison stations and the Imperial station. These distri- 
 bution systems will be rearranged so that the new Ashley
 
 214 The St. Louis 
 
 Street plant of the Union Company may supply current 
 to them through substations advantageously. In the un- 
 derground district the three-wire secondary alternating- 
 current mains of the Missouri-Edison Company parallel 
 the three-wire direct-current mains of the Imperial Com- 
 pany. The cross section of copper installed in these 
 mains within the underground district is more than suf- 
 ficient to supply the district at 125-250 volts direct cur- 
 rent. The feeders used by the Imperial Company for its 
 direct-current system are admirably adapted for rear- 
 rangement, to be supplied from additional substations 
 and from two of the old generating stations which are to 
 be converted into substations. The 500-volt motors now 
 being supplied from the 500-volt power distribution sys- 
 tem of the Missouri-Edison Company and from the 
 three-wire system of the Imperial Company will be 
 changed to 250 volts as rapidly as seems expedient. 
 Motors which are not changed over will be supplied from 
 the Missouri-Edison two-wire 500-volt mains, which will 
 be left intact. The operation of the present steam gen- 
 erating equipment in stations A and B of the Missouri- 
 Edison Company will be discontinued, and Station A 
 will be converted into a substation to be supplied with 
 current from the new Ashley Street plant. The gener- 
 ating equipment in the Imperial station will probably be 
 changed over to a lower voltage and held in reserve and 
 to assist at the peak. Three additional substations, two 
 located down-town close to Broadway and one about one- 
 half mile west of the present underground district, will 
 be built and will be supplied with current from the new 
 Ashley Street plant. The two new down-town substa- 
 tions will be equipped with motor generators, and will 
 transform current from the Ashley Street plant into 250- 
 volt current for the low tension direct-current system. 
 The substation to be located at Station A will contain 
 rotary transforming apparatus for the low tension direct 
 current and frequency changers to supply current to the 
 present alternating-current underground distribution sys- 
 tem until it is changed over, and to such overhead lines 
 as can conveniently be brought into this station. The
 
 Electrical Ha n d b o o k 21 ^ 
 
 new substation located west of the underground district 
 will at first contain only alternating-current transforming 
 apparatus and will be used as a distribution station for 
 current supplied to the sections of the city outside of the 
 underground district. The direct-current low tension 
 distribution system will be practically confined to the 
 present underground district, and the present 1,150-volt 
 alternating-current distribution system overhead will be 
 changed to 2.300 volts. Conduits are already laid and 
 cables installed for the transmission lines from the new 
 Ashley Street plant to all of the substations above men- 
 tioned. 
 
 In addition to the substations of the Union Company, 
 the new Ashley Street plant will also supply current to 
 street railway substations of the St. Louis Transit Com- 
 pany, located at Delmar and De Baliviere avenues and 
 Seventeenth and Locust streets, which are already con- 
 structed and in partial operation. 
 
 Direct-Current Series Arc Street Lighting 
 
 In addition to the other sy.stems which are now in 
 operation in the joint subway, there is a constant current, 
 series, direct-current arc system supplying street lights. 
 In this system single-conductor No. 8 rubber and lead- 
 covered calile is used, except in those cases where circuits 
 are carried from the station through the underground 
 district to supply lamps outside of the underground dis- 
 trict, in which case twelve-conductor rubber and lead- 
 covered cable is used. This cable is led to a terminal 
 l)ole and thence t(j a lerniiiial head and bo.^ from which 
 the wires are led to lightning arresters and circuits 
 placed on cross-arms. Each underground circuit consists 
 of from 105 to 108 lamps, each taking 4S0 watts at the arc 
 at 6.8 amperes. In the underground district connections 
 arc made to the lamps from manholes to iron arc-lamp 
 poles erected at the corners of the streets by means of 
 laying an iron pii>e between the manhole and the hollow 
 base of the jjok-. I'wo single-cimductor cables are drawn 
 through tliis pipe and terminate in hard rubber bushings 
 about iX in. above the ground. Connection between the
 
 2l6 
 
 The S f . L o u is 
 
 lead-covered cable and a flexible duplex cable leading up 
 tbrough the pole is made in this hard rubljer 1)ushing, 
 which is filled with paraffine. This flexible duplex cable 
 is led up through the pole to a point about lO ft. from the 
 ground, where it leaves the pole through a rain-drip cast- 
 
 City Street Lamp :in'l Iron I'dK 
 
 ing and wood bushing and is carried up to the lamp. 
 The lamp is supported on a flexible galvanized iron rope 
 leading over pulleys in the mast-arm and the pole to a 
 windlass in the base. Short-circuiting switches located 
 in the base of the poles were tried at first, but were aban- 
 doned on account of insulation trouble, lamp, changing 
 being effected at present by placing jumpers across the 
 wires just below the lamp. The lamps are insulated from
 
 Electrical Handbook 2iy 
 
 the ground by a special insulated hanger, which is located 
 between a short cross-arm and a hook on the end of the 
 rope. This cross-arm holds the wires while the lamp is 
 being changed. When this system was first put in opera- 
 tion great trouble was experienced from static potential 
 on the lines, especially on the underground circuits. Va- 
 rious schemes were tried to eliminate this static poten- 
 tial. The method finally adopted, and which is entirely 
 successful, was as follows : Each lamp was equipped 
 with two small carbon blocks separated by a thin piece of 
 perforated mica held in position by two clips insulated 
 from each other and connected to the terminals of the 
 lamp. At the station end of the circuits a rotating switch 
 driven by a small motor was installed, which alternately 
 connects each side of the circuit to the ungrounded pole 
 of a Leyden jar condenser. Static potential from the 
 circuit is used to charge this condenser, and the rotating 
 switch, after charging the condenser, short-circuits it be- 
 fore connecting the next circuit. It has been found that 
 by discharging each circuit through the condenser two of 
 three times a minute, all static potential can be removed 
 from the lines. The function of the carbon blocks in- 
 stalled in the lamps is to transmit the static potential that 
 accumulates in a particular lamp, or series of lamps, 
 through the various lamps and back to the static arrester 
 installed in the station. It was feared, when this scheme 
 for eliminating static potential was first adopted, that the 
 carbon blocks would short-circuit the lamps. This has 
 been the case in rare instances, but in general it has been 
 found that the carbon blocks do not require attention 
 before the lamp requires changing for general overhaul- 
 ing. 
 
 While the arc circuits are not in use in daylight hours, 
 each circuit is connected to a 235-volt direct-current 
 lighting circuit through test lamps in such a manner that 
 open circuits, grounds, and live crosses can be imme- 
 diately detected by the switchboard operator. This sys- 
 tem of continuous test has been of great value in giving 
 immediate notice of trouble, so that the remedy could be 
 applied before the schedule time for starting the lights.
 
 2i8 The St. Louis 
 
 The Construction of Subways 
 
 Prior to iSg8, practically all wires in St. Louis were 
 carried on poles. In i8y8 all wires in a district about 
 seven-eighths of a mile wide and one and three-fourths 
 miles long, in the central portion of the city, were placed 
 underground, in accordance with an ordinance known as 
 the Keyes bill, which was passed in 1896. This ordi- 
 nance directed that wires of companies supplying current 
 for electric light or power should be on one side of the 
 street, and designated this the high-tension subway. The 
 opposite side was reserved for conduits of companies 
 using wire for the transmission of messages; subways of 
 these companies were called low-tension subways. The 
 ordinance required companies using wires classed as 
 high tension to place their conduits in the same trench 
 and to occupy the same manholes. This created a joint 
 subway, which contains quite a variety of distributing 
 systems. 
 
 The construction of high-tension subways in St. Louis 
 has been about equally divided between vitrified clay, 
 multi-duct conduit of the ]\IcRoy type, laid with three 
 inches of concrete surrounding the conduit, and cement- 
 lined, iron pipe conduit furnished by the National Con- 
 duit and Cable Company, laid with i in. of concrete 
 between ducts and 3 in. of concrete on each side of a 
 conduit section. 
 
 The joint high-tension subway was constructed en- 
 tirely of the latter type of conduit. All conduits have 
 been laid to drain to manholes, and the manholes, when- 
 ever possible, have been connected to sewers. 
 
 The manholes of the joint high-tension subway are 
 constructed of hard red brick laid on a concrete founda- 
 tion, with walls 13 in. thick. The tops of the manholes 
 are arched brick supported by I-beams which carry the 
 cover frame. These manholes are ventilated by a grat- 
 ing cast in the cover. In some of the individual systems 
 it has been found necessary to ventilate manholes by 
 drilling i-in. holes through the covers. 
 
 In the individual conduit laid by the Citizens' Electric
 
 Electrical Handbook 21^ 
 
 Lighting and Power Company and the Union Electric 
 Light and Power Company, AIcRoy multi-duct section 
 has been used throughout, laid with 3 in. of concrete 
 surrounding the conduit. The manholes are constructed 
 of vitrified brick laid on a foundation of concrete, with 
 walls 13 in. thick. Where manholes are less than 5 ft. 
 square, the walls are racked at the top and the cast-iron 
 cover frame forms the roof of the manhole. Where 
 manholes are larger than 5 ft. square, concrete tops sup- 
 ported by I-beams carrying the cover frames have been 
 adopted. Round cast-steel covers 30 in. in diameter have 
 been used on this work throughout. 
 
 In the manholes of the joint high-tension subway 
 ca.st-iron cable racks are bolted to the walls at conven- 
 ient places. In the individual manholes of the Citizens' 
 and Union companies i-in. iron pipes have been laid in 
 the vitrified brick walls, in which cast-iron pins are in- 
 serted carrying wooden spools on which to rack the 
 cables. 
 
 Protection from Manhole Fires: Cables are pro- 
 tected from manhole fires by being wrapped with 3-16 
 Sisal rope, the turns of rope being about 14, in. apart. 
 The cable wrapping is then covered with Portland ce- 
 ment mortar, mixed one part cement to one part sand. 
 It has been found that this covering resists any ordinary 
 manhole fire, and as long as the cable is not moved it is 
 practically indestructible. Where it is necessary to move 
 the cable a part of the cement covering cracks ofif. This, 
 however, can be replaced at very small expense. 
 
 C()X.ST1<LC'TI()N OF SeKVIC K CoNNECTIOXS 
 
 Underground : Except for about 42,000 feet of Edi- 
 son tubing, the underground mains consist of three- 
 conductor, lead-covered cables. The service connections 
 from Edison tubing are taken off in the usual way. The 
 Edison tubing, however, is laid in only a few of the most 
 important streets, and is at present useil entirely in con- 
 nection with the underground three-wire secondary al- 
 ternating-current distribution system. The joint subway 
 was constructed with large manholes at street intersec-
 
 220 The St. Louis 
 
 tions in which there was ample room for transformers 
 and junction boxes of the various companies. Between 
 manholes at street and alley intersections, at intervals of 
 from 30 ft. to 75 ft., 3 by 3 service connection boxes 
 or handholes w-ere constructed to include the first, or 
 possibly the second, row of ducts in the conduit. Main 
 cables are drawn through ducts entering these service 
 boxes or handholes and service connections are made by 
 laying a 3-in. pipe between the service box and the cus- 
 tomer's basement. Through this iron pipe a lead-cov- 
 ered cable is drawn and is joined to the main service 
 cable by means of a cast-iron box filled with an insulating 
 compound. As a large proportion of the service connec- 
 tion pipes or laterals were installed W'hen the subway was 
 constructed, this method of taking ofif service connections 
 from the distribution system had the advantage of avoid- 
 ing, to a large extent, tearing up the streets and alleys, 
 and has the further advantage that if trouble occurs on 
 the service connection cable or on the main cable, it is 
 not necessary to take up the street to repair the damage, 
 as the cable can be drawn out and a new one drawn in 
 between the service box and the customer's premises or 
 between the service box and the manhole. 
 
 The cast-iron service connection boxes referred to 
 above are constructed \vith three or more outlets, two 
 outlets always being used for the main cable, which 
 passes straight through the box. The box is turtle- 
 shaped and divided through the middle, the joint being 
 ground, and the box being provided with bolts and lugs 
 for holding it together after being placed in position 
 around the cables. A brass plug is provided on one side, 
 through which an insulating compound is inserted. A 
 tight joint between the lead sheath of the cable and the 
 box is obtained by wrapping friction tape around the 
 cable to the required thickness. 
 
 The service connection cable terminates in the cus- 
 tomer's basement at a fusible knife switch, which is 
 usually located on the meter board. The- customer's 
 wiring is brought to this switch, the meter loop being 
 installed by the customer.
 
 Electrical Ha )i d b o u k 321 
 
 Ovcrlicad : Overhead construction in St. Louis is 
 fairly well standardized, eight-pin lo-ft. cross-arms being 
 used almost exclusively. The standard cross-arms of the 
 Union Electric Light and Power Company are made 10 ft. 
 over all. bored for VA-m. pins. Pole pins are 40 in. 
 centre to centre, and balance of pins 12 in. on centres. 
 Galvanized braces and bolts are used throughout. 
 
 In the portions of the city where overhead wires are 
 still permitted, the city authorities have endeavored, as 
 far as possible, to reserve one side of the street for poles 
 of electric light and power companies, the other side for 
 telephone and telegraph companies. This rule, however, 
 has not been adhered to in all cases. Tt is generally cus- 
 tomary in St. Louis for the electric light and power com- 
 panies and the telephone companies to exchange space 
 on their poles, in most cases charging a nominal rental 
 of 60 cents per annum per cross-arm attached. 
 
 The telephone companies gain their poles 18 in. centre 
 to centre. This brings the cross-arms so close together 
 that it has been necessary to adopt some other method 
 beisdes that of buck-arming, or taking the wires directly 
 from pins where service connections are taken from over- 
 head lines. A cross-arm from which a service connec- 
 tion is to be taken is supplied with two or three-point 
 spreaders, as the case may require, which carry the 
 service wires across the arm to the extreme end. from 
 which point good clearance can be obtained. The ab- 
 sence of buck-arming, or wires leading from pins, greatly 
 improves the appearance of line work, in addition to 
 making the poles safer for the men to climb. 
 
 Recent High-Tcnsion Overhead Construction: Six- 
 thousand-six-hundred-volt, 3-phase, 25-cycle power trans- 
 mission lines having a cross section of 211,000 cir. mils 
 have l)een constructed for the transmission of power 
 generated in the new Ashley Street plant of the Union 
 Electric Light and Power Company. 
 
 Four overhead circuits, each about four miles long, 
 were constructed for the purpose of supplying current to 
 the Delmar substation of the St. Louis Transit Company
 
 222 
 
 The S f . L o n i s 
 
 and to the World's Fair. Jhese circuits are extensions 
 of underground circuits, each about three miles long, 
 and begin at Garrison and Franklin avenue and end at 
 De Baliviere and De Giverville avenues. For about one- 
 half of the distance they are constructed on three sepa- 
 
 erminal Poles— (iarrison and Franklin .Avenues 
 
 rate pole lines running through more or less crooked 
 alleys, which made it necessary to adopt a peculiar type 
 of construction in order to hold the corners and to pre- 
 vent the entire run giving way in case a corner pole 
 should fail. The spans on these lines are -exceedingly 
 long for this class of work, varying from no to 150 ft. 
 The lines were constructed on telephone poles, telephone
 
 Electrical Handbook 
 
 --J 
 
 wires having been lowered down to provide space in the 
 top gains for the transmission lines. Triangular con- 
 struction was adopted wherever it was possible to obtain 
 the necessary clearance for wires. 
 
 The wires are strung on standard yellow pine cross- 
 arms, with pin holes so arranged as to provide ample 
 space for a man to climb the poles without coming in 
 contact with the lines — the pole pins being 45 in. on 
 centres. Standard iJ/S-in. locust pins and triple petticoat 
 glass insulators are used, except at corner and terminal 
 poles, where iVS-in. drop-forged pins with glass insu- 
 lators are used. Where the angle made by a corner is 
 more than 135 degrees, double arms with iron pins and 
 glass insulators are used. On each side of the corner 
 pole, terminal pole construction was adopted, so that in 
 the event the corner pole should fail the wares would 
 simply slack off between the corner pole and the first 
 pole on each side. 
 
 Terminal pole construction consists of double cross- 
 arms mortised to receive four-pin oak buck-arms each 
 55 in. long with pins u and 22 in. on centres. The oak 
 arms are also mortised to fit the yellow pine double 
 arms, and are further held securely in place by a 5^-in. 
 galvanized bolt through each arm. Drop-forged iron 
 pins and triple petticoat glass insulators are used, to 
 which the occo wire is attached by means of No. 4 B. & S. 
 solid ties soldered to the 0000 wire. The terminal pole is 
 held in position against the strain of the wires by ^-in. 
 galvanized stranded guys attached to eye-bolts passing 
 through the double cross-arms; the guys either being led 
 back to an anchored guy-stub, or to other poles in the 
 run. If the terminal pole is at the end of an underground 
 line, the underground cable is led up the side of the pole 
 to a point about 12 ft. above the ground through a 3V2-in. 
 pipe. Above this i)oint it is cleated to the side of the 
 pole and terminates in an end-bell under a wooden hood 
 above the double cross-arms on which the overhead 
 transmission line terminates. The wires from the end- 
 bell to the transmission line are led out through the open 
 bottom of the hood, over the end bell, the opening being
 
 22/^ 
 
 The St. Louis 
 
 sufficiently large to provide proper clearance. Above 
 this hood are erected the lightning arresters, line connec- 
 tion to which is taken off about 6 or 8 ft. out in the span 
 and ahead of the reactance coil which is inserted between 
 this connection and the cable terminals, 'i'he reactance 
 
 
 Corner Construction — Lake and Mcl'herson .\venues 
 
 coil is made by twisting the coco conductor fifteen times 
 around a split wood bushing ij/ in. in diameter, which is 
 placed over the line just ahead of where it is attached to 
 the pins on the oak buck-arms. The general construc- 
 tion is well shown in the illustration, though the pole 
 from which the photograph was taken is not complete, 
 no platforms having been provided for the men to work 
 on. Platforms are provided so that there is plenty of
 
 E I c c t r i c a I H a n d b u u k 
 
 -\') 
 
 room for a man to work on one circuit on one side of the 
 pole with the other circuit in operation, without heing in 
 any danger of coming in contact with live wires. Each 
 terminal pole provides space for two circuits. When a 
 line consists of more than two circuits, additional ter- 
 minal poles have to be provided for each pair of circuits. 
 Where a right-angle corner is turned, as shown in 
 the illustration, a type of construction has been adopted 
 
 ^msr- 
 
 Tfrminal 1 
 
 which effectually keeps the lines in position, at the same 
 time relieving the insulators of undue strain, and pre- 
 venting the line coming down in the event of an insu- 
 lator or pin breaking. The small extension arms shown 
 in the illustration are sections of oak arms 22^2 in. long 
 bored for two VA-m. drop-forged iron pins 12. in. on 
 centres and furnished with wrought-iron device securely 
 bolted to the oak. Before being bolted to the oak this 
 device is passed through an eye-Ixilt which extends 
 through the double arm. .After the wire is in i)osition 
 and has been drawn uji tu grade. No. 4 solid copper ties 
 are soldered to the conductor around each glass insu- 
 lator, after which the nut on the eye-bolt is screwed up 
 so as to relieve the strain between the insulators on the
 
 226 The St. Louis 
 
 double cross-arms and the insulators on the oak exten- 
 sion arm. 
 
 The corner poles shown in the illustration are 50-ft. 
 poles with 7-in. top, set 8 ft. in the ground, and with 
 gains 18 in. centre to centre. 
 
 The lines on which the above described construction 
 has been adopted were built during the past year and 
 have withstood a number of verj- severe storms and have 
 not yet caused any trouble nor required any repairs. 
 
 All guys used on this class of work are double insu- 
 lated with mica strain insulators insulating the guys in 
 such a manner as to protect linemen working on either 
 pole to which the guy is attached.
 
 The Electric Plant of the Laclede 
 Power Company of St. Louis 
 
 THIS cnnipany started its inisincss in 1890, 
 supph-ing- pnwor to small consumers located 
 in the central part of the city. It adopted 
 the 500-volt, direct-current system of distri- 
 bution, and operated twenty-four hours per day. It 
 supplied power only, until Maj', 1900, when it com- 
 pleted a new and modern power house and began 
 serving light as well as power. To accomplish this 
 result, chloride-accumulators were installed in a sidi- 
 station in the centre of its business district, making 
 a neutral wire with a pressure midway between the 
 pressures of the conductors of the two-wire 500-volt 
 power system. A third wire was used as a neutral 
 on the overhead pole lines, and the lead sheath of 
 the duplex cables was used as a neutral in the under- 
 ground district. This gave a direct-current three- 
 wire system, and the pressure was changed slightly, 
 so as tf) give 240 vnlts on each side of the lighting 
 circuit and 480 volts between the outside wires of the 
 power circuit. This sj'Stem has proved entirely sat- 
 isfactory for all kinds of service. 
 
 The equipment at the power station, which is lo- 
 cated on the river adjacent ti> tiie business district, 
 consists of direct-current, 500-vnlt, ci )mpound-\vound, 
 railway generators, direct connected to cross-com- 
 pound Corliss engines, carrying [75 lb. steam pres- 
 sure. 
 
 Increased service is being provided for by vertical 
 Curtis turbo-alternators, 3-phase, 60-cycle, 2,300- 
 volt, to operate at the same steam pressure with 200 
 degrees of superheat and 27-in. vaciuim. The circu- 
 lating water will be taken from the Mississippi river
 
 228 The St. Louis 
 
 with submerged discharge and circulated l)y means 
 i)f centrifugal pumps driven l)y compound recipro- 
 cating engines, which with the other auxiliaries, will 
 exhaust into open feed water heaters. The feed 
 water will then pass through economizers and be 
 raised to a temperature of about 300 degrees fahr. 
 
 Tlie 60 cycle, 2.300 volts will be carried to syn- 
 chronous converters located in sub-stations, and be 
 supplied to the three-wire network. 
 
 The company is owned exclusively in St. Louis 
 and has an authorized capitalization of $2,000,000, 
 a part of which has not yet, however, been paid in. 
 It is in the unique position financially of having no 
 lionded or other debt. Its stockholders, therefore, 
 own the property subject to no encumbrance what- 
 ever. This condition is almost without parallel in 
 the hist(»ry of large central-station e(|uipnients.
 
 The Eleclric Tlaiit of the Laclede 
 Gas Light Company 
 
 THE electric plant of The Laclede Gas Light 
 Company is located at Mound street and 
 Levee. It was built and began operation in 
 May, 1890. l-"rom this plant, light and power 
 for commercial iiurposes are furnished to the dif- 
 ferent i)arts of the city, the lighting being conlined 
 cliietly to the northern half of the city. The light- 
 ing circuits are all alternating current, the primary 
 distribution being at 2,200 volts with the secondary 
 at 100 volts and 220 volts. The power circuits are 
 all direct current, the distribution being at 550 volts. 
 The power house equipment has a total capacity 
 of 2.400 kilowatts. The boilers are of the water- 
 tube type, with fuel economizers and forced draft. 
 Illinois slack coal is used for fuel. The engines are 
 all compound and are operated condensing. Water 
 for the surface condensers is pumped from the Mis- 
 sissippi river. 
 
 The switchboard is of marble, eiiuiitped with oil- 
 break switches and the necessary complement of in- 
 struments. The distribution is both overlu ad and 
 underground. Then' are in the o\erluad district 
 approximately lOO miles of pole lines, and in the 
 underground district 200,000 ft. of duct. 
 
 229
 
 THE TELEPHONE IN ST. LOUIS
 
 The Telephone in St. Louis 
 
 11" is a fact of considerable interest that one of the 
 first telephone exchanges in the United States went 
 into commercial service in St. Louis on May i, 1878. 
 Yet, in spite of this early start, local development 
 has not kept pace with that of other smaller cities, par- 
 ticularly some of those of the Far West, for at the pres- 
 ent time the total number of subscribers of the two com- 
 panies is somewhat below the normal for a city of the size 
 of St. Louis. A marked improvement has, however, 
 manifested itself rtceutly. especially in the last two years, 
 while the mmiber of subscribers per hundred of popula- 
 tion has increased 230 per cent, since January, 1901. A 
 study of the subjoined table shows clearly the present 
 healthy rate of growth and indicates that in the near 
 future the city will take its proper rank in the telephone 
 f^eld: 
 
 Date 
 
 January, 1898 
 
 l-'ebruary, 1899 
 
 January, 1900 
 
 1 90 1 
 
 1902 
 
 1903 
 
 1904 
 
 July, 1904 
 
 Popula- 
 tion* 
 
 542,000 
 556,000 
 569,000 
 583,000 
 597,000 
 612,000 
 626,000 
 636,000 
 
 Subscribers 
 
 liell 
 4.639 
 
 6.155 
 
 7.655 
 
 10,329 
 
 13.931 
 20,000 
 
 Kinloch 
 
 Subscribers per 
 hundred of 
 popuIation^ 
 
 I'ell Kinloch 
 
 4,000 
 5.433 
 5.999 
 7.355 
 8.483 
 10.000 
 14,000 
 
 1.06 
 1.28 
 1.69 
 2.22 
 
 3-14 
 
 0.72 
 0.96 
 '.03 
 1-^3 
 1-39 
 1.60 
 2.20 
 
 *The figures for the population are liased upon a curve prepared 
 by Mr^ Roljert Moore. I'ast- President of the American Society of 
 Civil linRineers, for a paper on "The Vital Statistics of St, Louis." 
 
 A review of the local situation may perhaps be made 
 to best advantage by separate consideration of the two 
 com])anies, the Bell Telephone Company of .Missouri and 
 the Kinloch Telephone Company, beginning with the for- 
 
 uur. since it was first in the field. 
 
 ^?,^
 
 The "Bell Telephone Company of 
 Missouri 
 
 T]1E pioneer wurk of this company presents many 
 features of interest, and is typical of the evohi- 
 tion that has transformed the telephone in a 
 single gcneraticju from a scientific toy to an in- 
 strument of enormous industrial importance. 
 
 The original exchange, which was located at 417 Olive 
 street, had, at the time of its opening, four subscribers. 
 A magneto system was employed, and receiver and trans- 
 mitter were practically identical, the Blake transmitter 
 not having been invented at that time. Somewhat later 
 the Law system of horizontal multiple switchboard with 
 local battery was adopted, and the system was extended 
 l)y the addition of branch exchanges. In May, 1884, 
 ".Main" exchange was located at 417 Olive street, "Lef- 
 fingwell" on Leffingwell (Twenty-eighth street), between 
 Washington avenue and Locust street, "Cass" on Twejfth 
 street and Cass avenue, "Rutger" on Third and Rutger 
 streets, and "East" in East St. Louis, in what was then 
 called Flanagan's Hotel. In July of the same year an- 
 other exchange was opened in Carondelet, the southern 
 part of the city. All of these exchanges were equipped 
 with the Law system, except Leffingwell, where a mag- 
 neto system was still retained; the distribution, as a 
 whole, foreshadowed that now in use. During the win- 
 ter of 1885-6 the cupola of the Main exchange was de- 
 stroyed by fire, whereupon a new Main was installed at 
 I*"ourth and Pine streets, with a capacity of i.Soo sub- 
 scribers. The board was enlarged from time to time 
 until about 4/)00 lines were connected, when all of the 
 br.'inch exchanges were ab.'indoned. all traffic being 
 li.'Miilled ;it Main. In i8(;_^, however, the jirowth of the 
 
 -'35
 
 '?(5 
 
 T Ji c St. Louis
 
 Electrical Hand h a o k 
 
 ^37 
 
 system required the addition of branch offices, and others 
 have since been added as necessity has demanded. 
 
 The original Law boards were quite small according 
 to modern standards, having been only large enough to 
 accommodate four operators, three for local work and 
 one for incoming calls. The board was so arranged that 
 all local subscribers" lines terminated near its centre, the 
 rest of the board being provided with a series of brass 
 strips spaced about one-quarter inch apart, and provided 
 
 witli nunu-rous iioles, wliicli were used partly for local 
 and partlj' for incoming and outgoing trunk connections. 
 A subscriber desiring a local connection had first to push 
 a button which connected his set to a call circuit con- 
 stantly held by the operator, and then to call his own 
 number as well as that of the station wanted. The op- 
 erator, in turn, acknowledged the receipt of the call by 
 tapping caller's bell, ;ui(l, after rinf,'ing tlie bell nf sub- 
 scriber wanted, plugged both lines to one of the i)rass 
 strips. In case of a call for a non-local subscriber, the 
 operator would use a call button to the particular ex-
 
 ^?^ 
 
 T Ji c St. Lou is 
 
 O 
 
 ■^ -naCr-^s*^ : 
 
 
 s^>^- > 
 
 IPPI
 
 Electrical H a n d h u o k 3^g 
 
 change in which the called line terminated, after which 
 the method outlined above was followed. 
 
 After the abandonment of the branch offices, which, 
 of course, did away with trunking, the service was con- 
 siderably improved, and the system reached its greatest 
 perfection. It is hardly necessary to state, however, that 
 even at its best it could not compare in efficiency with the 
 present standard ; for example, trouble on a single call 
 line affected all subscribers using that wire, and leakage 
 from power circuits rendered the service very poor over 
 all lines near the leak. Another prolific cause of trouble 
 was the battery at the subscribers' stations. 
 
 Following the reintroduction of branch exchanges in 
 1893, Messrs. Durant, Shaw and Dean perfected and in- 
 stalled a trunking system called the Columbia trunk sys- 
 tem, or the Dean common battery system. This was 
 operated betw'een Main and the Lindell exchange, at that 
 •time located at 3456 Lindell avenue. The trunk lines, 
 connected in multiple at every fourth or fifth position on 
 the l)oar(l. were proxidcd with signal lamps at corre- 
 s])()n(ling intervals, which remained lighted while the 
 line was busy, so that all operators could see whether a 
 line was in use or not. An operator at ]\Iain receiving a 
 call for Lindell would connect to an unused trunk, there- 
 by lighting a lamp at Lindell on that line; Lindell oper- 
 ator. i)icking up the corresponding cord, would ask num- 
 ber and then plug to the proper jack, thereby putting out 
 the signal lamp. After the Main subscril^er called oflf, 
 .Main ojjcrator would strip the connection, thus putting 
 out all lamps at Main on this trunk and at the same time 
 again lighting the lamp at Lindell, whereupon Lindell 
 operator would strip connections, and again extinguish 
 the lani]). .Mxuit llii-- time alsn. a few subscribers were 
 provided with metallic circuits, winch were operated at 
 a toll board distinct from the main one. 
 
 During this jieriod of the growth of the system, the 
 subject of putting all wires underground in the business 
 district began to be seriously considered. After much 
 hampering legislation, a Subway Commission was ap- 
 jxiintcd by the .Mayor in Xovember. iSg3, to consider the
 
 2^0 
 
 The St. L o II i . 
 
 Cable Head
 
 Electrical Ha n d h o o k 241 
 
 matter thoroughly. An ordinance was finally adopted on 
 September 8, 1896, which regulated the construction and 
 operation of underground conduits in the city, and is 
 still in force. It provided, in brief, that no wires, tubes 
 or cables, conducting or transmitting electricitj', should 
 be placed above the surface of the street, alley or public 
 place in the district of the city bounded on the east by the 
 Mississippi River, on the west by the west line of Twenty- 
 second street, on the north by the north line of Wash 
 street, and on the south by the south line of Spruce 
 street, and its prolongation to the west line of Twenty- 
 second street, after December 31, 1898. It further pro- 
 vided that poles might be placed in the alleys for pur- 
 poses of distribution, provided that plans had been ap- 
 proved and permits had been issued by the Board of 
 Public Improvements. The construction of the conduits 
 of the Bell company was started on April 19, 1897, and 
 four months later, on August 17, cables were drawn 
 through the ducts. At the present time the conduit sys- 
 tem is much more extensive, as trunk line conduits have 
 been built to all of the branch exchanges, even those sit- 
 uated far out in the residence, or overhead, district. 
 
 Twelfth street divides the underground territory into 
 east and west districts. In the latter, terminal poles 
 carrying the runs are located at tiie entrances of alleys 
 intersecting the streets. The cables on leaving the man- 
 holes are led through 3-in. iron pipes to the terminal 
 poles and terminate in a cable head. The various cir- 
 cuits are then di.stributed to the subscribers by short 
 overhead lines. East of Twelfth street, in the purely 
 business district, the underground construction has been 
 rigidly adhered to. From the street manhole, distribut- 
 ing ducts are run through the alleys, each being provided 
 with a manhole at its centre and one at the end where the 
 cable is dead-ended. The cable head is located in the 
 manhole in the centre of the alley, and along the duct, at 
 intervals determined by tiie requirements, junction sec- 
 tions are inserted, from which the single pair lead-cov- 
 ered cables are led through 3-in. iron pipe into the base- 
 ment of the building in which the subscriber is located.
 
 2/^2 
 
 The St. Louis 
 
 In office buildings containing a large number of sub- 
 scribers an entire cable enters the basement and termi- 
 nates in a cable head. The distribution tile used in these 
 short lateral runs is of the Johnston type. It is made in 
 2-ft. lengths, and consists of two through ducts for single 
 pair cables, one enclosed cable duct, and a shallow chan- 
 nel above the latter, which is provided for the purpose of 
 admitting a device for drawing in the single pairs. The 
 
 L'nderground Constructn m 
 
 junction sections are like the distributing tile, but have in 
 addition a 3-in. side opening for lateral connections. 
 
 All the main runs consist in general of sM-i"- hollow 
 l)rick tile 18 in. long, of octagonal exterior, made of 
 sewer pipe clay, glazed inside and out, made by Evens 
 and Howard of St. Louis. This pipe was laid 5^ 
 in. between centres, the intervening space being filled 
 in with cement mortar ; successive rows being sep- 
 arated vertically by a half-inch layer. The abutting 
 joints, broken horizontally and vertically, were encased 
 in cement mortar consisting of one part of cement and 
 two parts of sand. The mandril used for aligning the
 
 Electrical H a ii d b o o k 
 
 -^43 
 
 joints and keeping the ducts clear consisted of a cylin- 
 drical piece of wood three feet long, provided with a 
 washer at its inner end and a hook at its outer end. The 
 best American Portland cement was used. The concrete 
 foundations for the conduits varied in depth from 4 to 
 6 inches, according to the number of laj'ers of duct. The 
 sides and top of the conduit were covered with irom 
 3 to 4 inches of concrete mixed in the proportion of one 
 part of cement, three of sand and six of broken stone. 
 
 I'Llectric Caljle-Draw ine .\iitomol)ile 
 
 Only a short length of multiple duct was laid at the time 
 of the original construction, and none has been built 
 since. The ducts in the short length in use consist of 
 four rectangular compartments, 3^ in. wide by 4 in. 
 deep, with i-in. walls. It is made in 2- ft. lengths and is 
 intended only for places where multiples of four were 
 used, since the roof of one layer is formed by the bottom 
 of the one above ; a close fit is insured by a tongue-and- 
 groove joint. The top is closed by an arched sheet of 
 No. 22 mild steel, bent to lap over the sides. The stand- 
 ard manhole is 5 ft. cube with (;-in. brick walls, concrete 
 bottoms, a 6-in. clay tile sewer with a ■)4 S iron trap, anci
 
 244 
 
 The St. L u n is 
 
 a grated cover when necessary. The roof is of concrete 
 lO in. thick, u itli an opening for a 24-in. hy 30-in. self- 
 locking cast steel cover, either of tlie solid or ventilated 
 
 pattern, and provided with dirt pans beneath. The larg- 
 est manhole is the main vault under the street on the west 
 side of the Telephone Building, where the Main exchange 
 is located. It is 24 ft. by i^v, ft. by 8 ft., with 17-in. brick
 
 Electrical Handbook 24^ 
 
 walls, a i-in. air space being left on the inside course to 
 render the manhole moisture proof. The roof consists 
 of 17 in. of concrete, supported by 12-in. steel I beams. 
 
 The original contrivance used for drawing the large 
 lead-covered cables through the ducts consisted of a 
 small 31/2-h.p. steam engine mounted on a low wagon and 
 connected to a capstan. \\'ith this arrangement a speed 
 of 25 ft. of cable per minute was easily attained, but it has 
 recently been abandoned in favor of an electric automo- 
 bile carrying an electrically-driven capstan. 
 
 In the meantime, while these improvements were 
 being made in the distributing system, the exchanges 
 themselves were undergoing a transformation. The 
 "Sidney" exchange, at Eleventh and Sidney streets, was 
 opened for service on May 15, 1897. Tt was the first 
 modern common battery board in St. Louis. In Janu- 
 ary, i(S9(S, the new Main exchange, in the Telephone 
 Building at Tenth and Olive streets, was put into opera- 
 tion. It had a common batterj-, multiple switchboard, 
 and was the second one of the kind to be installed in this 
 country. It was the largest board manufactured at that 
 time, with a capacity of 5,600 multiple jacks. This office 
 has since been equipped with an incoming trunk board of 
 9.600 lines capacity, and a complete new power and sto- 
 rage battery plant, 'i'he power plant has a total capacity 
 of 36 kw., and the storage battery consists of two sets of 
 Chloride Accumulators, of 22 volts each, and with a dis- 
 charge rate of 400 amperes for eight hours. With the 
 additional equipment ordered, this exchange will be one 
 of the largest outside of New York City. 
 
 The present system of the P»ell Telephone Company of 
 Missouri consists of eight exchanges, viz. : "Main," at 
 Tenth and Olive streets ; "Beaumont," at Twenty-seventh 
 and Locust streets; "Lindell," at 3844 Olive street; "For- 
 est," at 5144 Delmar avenue; "Grand," at 1625 South 
 Grand avenue ; "Sidney," at Eleventh and Sidney streets ; 
 "South," at 6817 Minnesota avenue, and " lyler," at Elev- 
 enth and Chambers streets. There is also an exchange 
 at 105 Collinsville avenue. East St. Louis. 111., which is 
 called "East" or "Bridge." In general, all exchanges are
 
 246 
 
 The St. Louis 
 
 equipped with common battery relay type of switch- 
 boards; the later exchanges, such as Beaumont, Grand 
 and Forest, have a capacity of 9,600 lines each, and are 
 t}'pical examples of the best modern telephonic engineer- 
 ing. The underground conduit system occupies forty 
 
 Electric Cable-Drawing Automobile 
 
 miles of streets and alleys, and contains about 27,000 
 miles of wire ; this is arranged in cables varying in size 
 from I to 480 pair. There are also 200 miles of pole line, 
 carrying approximately 20,000 miles of wire, of which 
 about 75 per cent, is aerial cable. The toll line system 
 consists of about 3,000 miles of line wire.
 
 The Kinloch Telephone Company 
 
 Ox Dcceniher 5, i8g6, just three months after the 
 adoption of the city ordinance regulating the 
 construction and operation of underground 
 conduits, the Kinloch Telephone Company was 
 organized, and has almost from its inception enjoyed the 
 distinction of being the largest '"independent" telephone 
 system in the country. 
 
 After its incorporation the company lost but little time 
 in iiutting its plans into execution. The construction of 
 
 Main Exchange— "A" iJivision 
 
 the underground system was begun on March 7, 1897, 
 some time ahead of any of the other wire-using com- 
 panies. The conduit was finished in four months, and 
 by April of the following year the underground work was 
 complete. Simultaneously, about 12,000 poles were set in 
 the outlying districts, and cables and wires were strung 
 for the overhead lines. ihis construction was rcniark- 
 
 247
 
 248 
 
 T h c St. Lo It 
 
 able for the exceptionally straight poles and the perfect 
 alignment. 
 
 In the underground district there are three principal 
 lines of conduit running north and south on Seventh, 
 Ninth and Eleventh streets. West of Eleventh street the 
 alleys take the runs east and west. East of Seventh 
 street, in the business district, the conduits are on alter- 
 nate streets running east and west, distributing from 
 cable heads on poles in the alleys or from terminal heads 
 located in the basements of office buildings. 
 
 Rear \'iew of Svvitchljoard — Delniar .Station 
 
 The company used a multiple-duct vitrified clay con- 
 duit manufactured by John T. McRoy of Chicago. This 
 tile was laid in two, three, four and six-duct sections, the 
 last two sizes preponderating. The duct is in 6-ft. 
 lengths and is of hard burned shale with an exterior and 
 interior salt glazing, the cross-section being rectangular 
 with rounded corners. Joints between adjacent sections 
 were made with steel dowel pins 14 in. in diameter and 
 6 in. long, the dowel hole running through the entire 
 length of the duct to permit of joints between pieces cut 
 from the standard size. The joints were covered with
 
 Electrical Handbook 
 
 249 
 
 wet burlap and plastered with a coating of cement mor- 
 tar. 
 
 The manholes were built in three sizes — y,/^ by y/2 
 ft., 4 by 4 ft., and 5 by 5 ft., with head room of 6 ft. and 
 i2-m. concrete floors. The smallest size has a corbeling 
 top, supporting a cast iron frame and circular cover 36 in. 
 in diameter. The larger manholes have i8-in. walls half 
 way up and 13-in. walls the rest of the way. The roof is 
 of concrete supported on 6-in. by 2-in. I beams. 
 
 The main exchange is located on the tenth floor of 
 the Century Building, a fire-proof office building on the 
 
 Delmar Exchange 
 
 northwest corner oi Tenth and Olive streets. All under- 
 ground cables enter the building through a vault in the 
 northeast corner of the basement, and pass to the oper- 
 ating room above througli a shaft i_'0 ft. long and 8 ft. 
 by 10 ft. in cross-section. 
 
 The original board consists of a four-division mul- 
 tiple switchboard having an ultimate capacity of 20,000 
 lines. It was built by the Kellogg Company of Chicago. 
 and is the only one of its kind in operation. The orig- 
 inal system contemplated the construction of the main 
 exchange only, the intention l)eing to do away with all
 
 250 
 
 The St. Lou is 
 
 Di-tiiluitniL' Room— Delmar Exchange 
 
 ower Room— Deiniar lixchange
 
 Electrical Handbook 2^1 
 
 branch offices and the incidental trunking. The system 
 has since been changed, however, and at present there are 
 three branch offices scattered about the city and the im- 
 mediate vicinity. It is claimed that the main board 
 handles at the present time a greater daily number of 
 connections than any other exchange of equal size in 
 the United States, and that the storage battery used in 
 connection with it has the largest capacity of any used 
 for telephone purposes in the world. 
 
 The three exchanges at present in operation in addi- 
 tion to the Main exchange are : "Delmar," at Delmar and 
 Newstead avenues, with a capacity of 7,200 lines and a 
 22-volt common battery switchboard ; "Victor," at Ann 
 and Indiana avenues, with a capacity of 7,200 and a 
 44-volt common battery switchboard ; "St. Clair," at 
 I-"itih and Missouri avenues. East St. Louis, 111., with a 
 capacity of 5,000 lines and a _i4-\olt common battery 
 switchboard. 
 
 The outside equipment consists of 21,000 miles of wire 
 and cable, partly of aerial and partly of underground 
 construction. There are 3C0 miles of pole line and 228 
 duct miles of conduit. The cables very in size from i to 
 400 pair.
 
 ISOLATED 
 ELECTRICAL PLANTS
 
 W^ashington University 
 
 TIIE new grounds and buildings of Washington 
 University, situated within the boundaries of the 
 Louisiana Purchase Exposition, constitute one of 
 the finest university phmts in the United States, 
 and furnish an admirable example of what may be done 
 by careful and consistent designing. Of the eleven build- 
 ings now completed, seven had been erected before the 
 
 University Ha 
 
 constructional work of the Fair had been started, and 
 were to have been occupied by the University in the fall 
 of 1902 ; but early in that year, because of nuitually ad- 
 vantageous reasons, the University leased the property to 
 the Exposition Company for the period of the Fair, re- 
 maining in the meantime in temporary quarters. Since 
 that time ff)ur more buildings have been completed. 
 
 Tiu' University was founded nn I'ebruary jj, 185^^. at
 
 j>56 The St. L o 11 i s 
 
 thf instance of Waynian Crow, Esq., a Slate Senator, 
 under the name of the EHot Seminary, in honor of the 
 Rev. WiUiam G. EHot, of St. Louis, but its name was 
 afterwards changed to the Washington Institute, and 
 later to the Washington University, in deference to the 
 wishes of Dr. EHot. 
 
 The charter granted by the State Legishiture is per- 
 petual and is of a most broad and liberal order, no lim- 
 itations being imposed except that there shall be no in- 
 
 Library 
 struction of a partisan or sectarian nature. At the pres- 
 ent time, the University includes the following depart- 
 ments : the Undergraduate Department, consisting of the 
 College and the School of Engineering and Architecture; 
 the Henry Shaw School of Botany, maintained in con- 
 nection with the Missouri Botanical Garden ; the St. 
 Louis Law School ; the Medical Department ; the Mis- 
 souri Dental College, and the St. Louis School of Fine 
 Arts. The University also controls three preparatory 
 schools, the Smith Academy and the Manual Training 
 School for boys, and the ^lary Institute for girls. 
 
 The University is a private corporation, receiving no
 
 Electrical Ha n d b o o k 
 
 O/ 
 
 Slate aid, except that its property is exempt from taxa- 
 tion. Its grounds and buildings and endowment fund 
 are wholly derived •from the <k)nations of public-spirited 
 citizens. 
 
 The new grounds on the World's Fair site cover an 
 area of no acres, and are approximately three-fourths of 
 a mile deep bj- one-fourth of a mile wide. The prevail- 
 ing style of architecture throughout the entire group is 
 Tudor-Gothic ; all the l)uildings are of fire-proof con- 
 
 '\a^^<%^. 
 
 imiitLisi nils, : nJTiii SH 
 
 Liggett Hall — Dormitory 
 
 struction, and are built of red Missouri granite with Bed- 
 ford linicstnne trimmings. They are all heated and 
 lighted from a central power plant, and are arranged in 
 quadrangles, only one of which, however, is complete at 
 the present time. 
 
 The power house, located at the foot of the hill on the 
 north side of the grounds and on a spur track of the 
 'Frisco-Rock Island Railroad, contains seven 66-in. by 
 i8-ft. fire tube boilers, which furnish steam for three 
 Ideal single-cylinder, non-condensing engines, each direct 
 connected to a go-kw., two-phase alternator. The alter- 
 nators are of the Genera! Flectric. form D, compensated
 
 ■:)^ 
 
 The St. L o II i s 
 
 field type, and supply 6o-cyck' current at 600 volts per 
 phase. 'JMie power house is connected with the four 
 buildings of the first quadrangle (University, Busch, 
 Library, and Cupples Hall No. i), and with Eads Hall, 
 Cupples Hall No. 2 and the Cupples Engineering Labo- 
 ratory, by an underground tunnel, 7 ft. wide l)y 7 ft. high 
 at the centre, and about 1,900 ft. long. In this tunnel are 
 carried the power and lighting circuits and the steam 
 pipes for heating. Provision has been made for future 
 
 Interior of Power House 
 
 extension of this tunnel to other outlying buildings, but 
 at present steam is carried to the two dormitories bj^ a 
 pipe laid in a brick duct, the power and lighting current 
 being transmitted by overhead lines. The gymnasium, 
 at the extreme western end of the grounds, has an inde- 
 pendent heating system. 
 
 All of the buildings are heated and ventilated by the 
 low-pressure indirect system, using the exhaust steam 
 from the engines, and, if necessary, live steam taken 
 through a reducing valve. The warm air is forced 
 through the buildings by Sturtevant fans, driven by Gen- 
 eral Electric two-phase induction motors. 1"hc motors 
 are of the squirrel-cage type with autotransformer start-
 
 Electrical H a n d b o o h 2f^Q 
 
 ing compensators, and vary in size from 5 h.p. to 15 h.p., 
 taking current directly from the line. Air is forced into 
 all recftation and lecture rooms at the rate of 2,000 cu. ft. 
 per hour per person. Temperature regulation is eflfected 
 by the Johnson system of thermostats. 
 
 All of the buildings are electrically lighted, a bank of 
 two General Electric, type H, oil-cooled transformers 
 being installed in the basement of each one of them. The 
 banks vary in size from 5 k\v. in the engine room to 50 
 k\v. in I'niversity Hall (Administration Building). Both 
 power and lighting circuits are wired on the three-wire, 
 two-phase system. This was due to the fact that an out- 
 side connection to a three-wire, single-phase system from 
 a neighboring county power house was provided for 
 lighting the dormitories at night and during the summer 
 months when the University plant might be shut down. 
 No troul)lc from unbalanced phase regulation has been 
 encountered, the plant having been running to its full 
 capacity since the opening of the Fair, with frequent over- 
 loads of 50 per cent. The overload is due to the fact that 
 the Exposition authorities have temporarily added two 
 arc-light transformers, each of 62 kw. capacity, for illu- 
 minating the grounds. 
 
 Tnunediately after the close of the Fair the buildings 
 will be occupied by the Undergraduate Department (the 
 College and the School of Engineering and Architec- 
 ture). The plans adopted s'ome time ago contemplate an 
 extensive equipment for instruction in the various 
 l)ranches of engineering, all of which will be of the most 
 modern description. '
 
 The Aiiheuser-Busch Brewety 
 
 TllM brewing of malt liquors is one of the 
 chief industries of St. L(nHS. The plant of 
 the Anheuser-Busch Brewing Association, 
 the largest brewery in the world, is located 
 here. This fine property has been for many years 
 one of the most interesting sights of the city. The 
 main office of the works is at Ninth and Pestalozzi 
 streets, and may be reached by the south-bound 
 Broadw^aj' (Fifth street) and the Cass avenue trol- 
 ley car. The plant covers 125 acres, extending east- 
 ward to the river front, and is completely ecjuipped 
 for the manufacture of all auxiliaries necessary for 
 marketing its product; for example, kegs, barrels, 
 boxes, and bottles. 
 
 From an engineering standpoint the plant pre- 
 sents many features of interest. It has its own 
 power house, refrigerating plant, water-works, and 
 mechanical filter plant, — all these are on a scale 
 that compare with municipal installations in many 
 large towns. There is also a complete system 
 of switching tracks connecting the various build- 
 ings, aggregating six miles of track, operated by 
 five steam locomotives. An idea of the magnitude 
 of the works may perhaps be obtained from the fol- 
 lowing data: 
 
 Number of employees, 5,000; daily capacity of 
 brew-house, 6,000 barrels; bottling works, 800,000 
 bottles; inalt-h-oiise, 9,000 bushels; storage elevators, 
 1,250,000 bushels; stock-house, 450,000 barrels; the 
 steam power plant has a rated capacity of 7,750 h. p.; 
 electric light plant. 4,000 h. p., and the ice and 
 refrigerating plant has a daily capacity of 3.300 
 tons. The total output for the year 1903 was 1,201,- 
 762 barrels. 
 
 260
 
 Electrical Handbook 261 
 
 The boiler houses, of which there are seven in all, 
 contain a total of 10,125 boiler horse power, distrib- 
 uted as follows: 
 
 Boiler-house No. i. 11 boilers. 450 h.p. each. 4-950 h.p. 
 Boiler-house No. 2, 5 boilers, one of 650 h.p. 
 
 one of 500 h.p. 
 three of 400 h.p. 
 
 2.350 h.p. 
 
 Boiler-house No. 3. 5 boilers. 300 h.p. each. 1,500 h.p. 
 
 Boiler-house No. 4, 2 boilers, 200 h.p. each, 400 h.p. 
 
 Boiler-house No. 5, 3 boilers, 200 h.p. each, 600 h.p. 
 
 Boiler-house No. 6, 2 boilers, 125 h.p. each, 250 h.p. 
 
 Boiler-house No. 7, 1 boiler, 75 liP- 75 hp- 
 
 10,125 h.p. 
 
 Five of the boilers of No. i, and all of those of 
 No. 2, are equipped with Hawley down-draft grates, 
 all of the other boilers having plain grates. Boiler- 
 houses Nos. I, 2 and 3 have brick stacks 275 feet, 2C0 
 feet, and 200 feet high, respectively, while those of 
 Nos. 4, 5, 6, and 7 are smaller, varying from 60 to 80 
 feet in height. 
 
 The refrigerating plant supplies a large amount 
 of ice for the local market as well as all ice and 
 refrigeration required in the cold-storage vaults of 
 the brewery itself. The refrigerating machines, all 
 of the De la Vergne type, are located in two plants. 
 No. I and No. 2. No. i contains seven machines, 
 ranging in capacit\- from "^ to 500 tons, while No. 
 2 has one machine of 470 tons capacity. 
 
 The electric light and power plant contains two 
 500-kw., 220-volt, direct-current generators, each 
 direct connected to cSoo h.p.. compound condensing 
 engines. At the jjresent time there are being in- 
 stalled two 200-kw.. 220-voit, direct-current gen- 
 erators, each direct connected to a 300 h.]). De Laval 
 steam turbine. 
 
 The water-works, located near the river front, 
 contain tliree W'orthington triplex electric pumps.
 
 262 The St. Louis 
 
 each of j.ooo.ooo gallims capacity; and a centrifu- 
 gal pump is now in course of erection. The water 
 is partially clarified in two steel settling tanks, 
 each 75 ft. in diameter and 20 ft. high, and is stoied 
 in a settling reservoir of 1,000,000 gallons capacity. 
 There is also a mechanical filter plant consisting 
 ()f twelve 14-ft. filters. 
 
 At Main and Dorcas streets is located the bottle- 
 glass factory of tlie A. Busch Glass Manufactur- 
 ing Company, which contains the largest tank- 
 furnace in tile world: it is a 20-ring regenerative 
 furnace, with a capacity of 50 tons in 24 hours. At 
 Belleville. 111., 15 miles from St. Louis, is the bottle 
 factory proper; this is ecjuipped with three continu- 
 ous tank-furnaces of 2>2 rings. The capacity is 82 
 tons in 24 hours, or the equivalent of 164.000 bottles. 
 
 The plant, as a whole, is a model self-contained 
 unit, and is well worth visiting.
 
 77?^ New Carleton IV holes ale Build- 
 ing 
 
 THE modern fire-proof building designed for con- 
 ducting the business of a wholesale dry goods 
 company in the most efficient and economical 
 manner has passed through various stages of 
 development, until it has become closely associated with 
 electrical engineering, since all the operations required 
 for ventilating and lighting the building and handling 
 the goods are accomplished by means of electric power. 
 The building recently erected in St. Louis at the north- 
 east corner of Twelfth street and Washington avenue 
 for the Carleton Dry Goods Company is a good example 
 of the latest practice in this class of building. The en- 
 gines driving the dynamos and the boiler-feed pumps are 
 the only steam-driven units in the plant. All other 
 machinery and appliances are operated by electric motors. 
 
 The building itself comprises ten stories, a basement 
 extending under the entire building, and a sub-basement 
 occupying about one-fourth of the area. The total floor 
 space is 217.500 sq. ft., or about 5 acres. Space was con- 
 sidered of sufficient value to warrant placing all machin- 
 ery in the sub-basement. The building is of fireproof 
 construction throughout with steel framework enclosed 
 in concrete fire-proofing, and all floors are made of solid 
 concrete with corrugated iron bars for reinforcement. 
 The building is faced with brick, with tile trimmings, 
 ilu- first flof)r is 17 ft. high and the other floors and 
 basement are each approximately 12 ft. high. 
 
 The mechanical and electrical e(|uipment of the build- 
 ing consists of a boiler and heating plant, dynamos and 
 engines, a storage battery, and the electric elevator 
 plant. 
 
 'ihe boiler jjlant consists of three 165 h.p. safety
 
 264 T li c St. L u is 
 
 \vater-tul)e boilers. Ilic furnaces are of the smokeless 
 down-draft type, as recjuired by the city ordinances. 
 This type of furnace is somewhat more efficient than the 
 common furnace, and when properly handled and not 
 forced is smokeless. The boilers are designed and tested 
 for 225 lb. pressure and are operated at 130 lb. gauge 
 pressure. 
 
 The system of high-pressure pipe work connecting 
 these boilers with the engines is all supplied with e.xtra- 
 heavy valves and fittings put together with copper gas- 
 kets, secureh' supjiorted to the walls and ceiling of the 
 room. 
 
 The building is heated throughout all the upper stories 
 bj' means of radiators connected to a one-pipe down-feed 
 system. 
 
 The basement and first floor are heated and ventilated 
 by the hot-blast system, providing heat in winter and 
 ventilation in summer. There is an air-shaft extending 
 from the top of the building to the sub-basement located 
 at one side of the stairway. In the sub-basement this 
 air-duct runs beneath the basement floor into the room 
 provided for the heating and ventilating system. There 
 is also a by-pass on the first floor by which air can be 
 taken from the first fl(5or during extremely cold weather 
 and returned to the fan, thus avoiding the necessity of 
 heating air at zero temperature. The air passes over 
 coils of one-inch pipe through which exhaust-steam is 
 circulated and is then draw-n through a large fan driven 
 by a 15 h.p electric motor and then forced through a 
 system of ducts laid beneath the basement floor to dif- 
 ferent risers distributed around the building, through 
 which it is carried up to registers located in the first 
 story. During the summer this fan is run without any 
 steam in the heating coils, and furnishes pure air for 
 ventilating purposes. 
 
 In connection with this heating and ventilating plant 
 there is provided an air-washing system which cleanse.s 
 and purifies all of the air before it passes through the 
 fan and enters the heating system. This air-washing 
 apparatus consists of a system of small spray-heads
 
 Electrical H a ii d b o o k 26 j 
 
 located within a spray-chaml)er wliich provides a shower 
 of finely divided water through which all the air passes 
 This water collects in a pan at the bottom and is drawn 
 off by a pump which forces it again through the spray- 
 heads, the same water being used over and over again 
 until it is so dirty that it needs to be replaced. After the 
 air passes through the spray-chamber it passes over a 
 system of baffle-plates, consisting of galvanized-iron slats 
 l)laced like the slats of a window-shutter, one behind the 
 other, so that the air in passing through them comes in 
 contact with the surface of the slats; these slats take up 
 all the water, leaving the air perfectly dry. 
 
 The dynamos and engines consist of three loo-kw. 
 units. The engine-cylinders are compounded and the 
 dynamos are direct connected. The cables connecting 
 the switchboard with the dynamos are lead covered and 
 placed in tile ducts concealed beneath the engine-room 
 floor. 
 
 The switchboard is of marble approximately 15 ft. 
 long and 7 ft. high. There are 8 panels on the board. 
 The first three are dynamo panels, one for each unit. 
 The fourth panel contains all the switches for the differ- 
 ent lighting circuits throughout the building; one switch 
 and its corresponding feeder carrying the lights upon two 
 floors. The next three panels contain the instruments, 
 switches, etc.. necessary with the battery and booster ap- 
 paratus. The last panel contains the switches and cir- 
 cuit-breakers for the 10 elevators in this building. 
 
 'i"he storage-battery is located in a room by itself ju.--t 
 north of the engine-room. This room has a vitrified-tile 
 floor. I'here is an opening in the wall, connecting with 
 the space around the smoke-stack, which provides for 
 ventilation so that the acid fumes which are given off 
 when the battery is charged — especially when it is over- 
 charged — make their escajjc witlmut jiassing through the 
 engine-room. The liattery consists of one hundred and 
 forty _'00 ami)ere cells and has a capacity of 46 kw. on one 
 hour's discharge. In connection with this battery there 
 is a duplicate motor-driven booster set, consisting of two 
 motors each driving a specially-wound generator. These
 
 266 T h c S t . Li) II I s 
 
 boosters are used either for charging the Ijattery or for 
 controlling the load on the engines when the elevators 
 are in operation. 
 
 The batter.v is so connected by means of the regulat- 
 ing booster that it takes the fluctuations of load produced 
 by the elevators so that the variation on the engine is 
 less than 50 li.p., and one engine will therefore carry the 
 entire elevator load throughout the day. In addition, 
 this engine will furnish the lights required during the 
 day. and also furnish power for about 30 h.p. of motors 
 driving heating and ventilating fans, cash-carrier system, 
 pumps, etc. This leads to decided economy in the use of 
 coal in the plant. The storage-battery also serves an 
 important function in providing for light at night, mak- 
 ing it unnecessary to operate the plant after business 
 hours. The building was not piped at all for gas, entire 
 dependence being placed upon the storage-battery. 
 
 The electric-elevator plant consists of three high- 
 speed passenger elevators, operating at a speed of 400 ft. 
 per minute, and five large freight elevators carrying 
 3.C00 lbs. at a speed of 275 ft. per minute. In addition 
 there are two one-story lifts operating from the basement 
 to the first storj- only. Each carries a load of 4.000 lbs. 
 at a speed of 100 ft. per minute. 
 
 The building is lighted throughout by standard en- 
 closed arc-lamps, provided with porcelain shade reflect- 
 ors. The arc-lamps are hung on pendent fi.xtures. and 
 near each lamp is a push-button switch, suspended from 
 the ceiling, by which it may be controlled. The lamps 
 are also connected so that they can be controlled two on 
 a circuit from a central panel or switchboard nenr the 
 elevator shaft. 
 
 The wiring of the liuilding is in iron conduit through- 
 out except the feeders which run open in the elevator 
 shaft. All circuit connections, terminals, etc., are located 
 on a fireproof marble tablet and the entire tablet enclosed 
 by a fireproof cabinet with door provided with lock and 
 ke^^
 
 ELECTRICAL 
 MANUFACTURING PLANTS
 
 The Wagner Electric Manufactur- 
 ing Company 
 
 IN the line of electrical nianufacturing, the largest 
 individual enterprise in St. Louis is the plant of 
 the Wagner Electric Manufacturing Company,, 
 located at 2013-21 Locust street. This company 
 began its mercantile career in i8gi in a $10,000 cor- 
 poration for the manufacture of alternating-current 
 desk fan-motors. The founders of the company con- 
 templated a very small enterprise only, but by rapid 
 stages the business expanded to its present condition 
 of being one of the recognized leading electrical 
 interests of the United States. 
 
 The products of the Wagner company are at 
 present practically con fined to four specialties — 
 single-phase alternating-current power motors; static 
 transformers; switchboard instruments, and direct 
 ctirrent motors and generators. 
 
 From an engineering point of view the most in- 
 teresting product of the company' is its single-phase 
 alternating-current power motor. European engi- 
 neers will be especially interested in this motor, as its 
 wide adoption in American practice is a distinct de- 
 parture from the prevailing European practice. It 
 is unusual on the Continent to install single-phase 
 motors where ])olyphase current supplj- is available. 
 In the United States exactly the ojiposite practice 
 holds; single-phase motors are frequently installed' 
 on polyphase systems, in fact, to-day all of the best 
 po]y])hase stations of .America are large tisers of 
 single-phase motors, the jjrevailing sizes varying 
 from 0.5 h.p. to 40 h.p. 
 
 The Wagner company's form of motor is built 
 under the patents of Professor ]•",. Arnold, as com- 
 
 269
 
 270 
 
 The St. Lou i s 
 
 billed with a mimln-r of important subsidiary patents. 
 The method of construction and operation is as 
 follows: 
 
 Mechanically the motor con>ists of a stationary 
 primary, or inducing member, with a revolving sec- 
 ondary. The primary member for standard constant- 
 speed motors, is wound with so-called "pancake" 
 coils, the wire being threaded through partially- 
 closed slots. The secondary corresponds to tlie 
 
 Fig. I 
 
 well-known direct-current armature, except that a 
 vertical rather than a horizontal commutator is used. 
 The rotor also carries mounted closely upon the 
 shaft a centrifugal governor mechanism by means 
 of which the commutator may be completely short- 
 circuited through a series of small links when the 
 speed of rotation is such as to throw this governor 
 into action. The same centrifugal operation also 
 serves either to entirely remove the carbon brushes 
 from the commutator, or to remove the tension from 
 the brushes. In electrical performance, two sets of
 
 Electrical Handbook 2/i 
 
 C^ -
 
 2^2 
 
 The St. L II is 
 
 working connections arc utilized, one for starting 
 and the other for running. In tlie starting condi- 
 tion the secondary member is short circuited through 
 the carbon brushes, these brushes being shifted to 
 such angular displacement as to start the motor on 
 the repulsion principle. Under these starting condi- 
 tions, the motor quickly attains synchronous speed, 
 at which point the centrifugal governor comes into 
 action, short circuiting the commutator, and remov- 
 ing the brushes. In this condition the rotor cor- 
 
 
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 responds substantially to the rotor of a polyphase 
 motor. 
 
 The external appearance of the Wagner motor 
 is illustrated in Fig. i; the internal construction in 
 Fig. 2; running characteristics for a lO-h.p. motor 
 in Fig. 3, and starting characteristics in Fig. 4. 
 
 In explanation of Fig. 4 it maj' be stated that the 
 Wagner form of motor is capable of being started 
 either In' the direct application of supply voltage to 
 the motor terminals, or by the introduction of a non- 
 inductive starting rheostat in the stator circuit. 
 The torciue and current characteristics for the former
 
 Electrical H a )i d b o o k 
 
 27S 
 
 starting condition are shown by the dotted lines in 
 Fig. 4, while the corresponding characteristics for 
 the latter condition are shown in the solid lines on 
 the diagram. It is the practice of the majority of 
 American central stations to apply motors of S h.p. 
 or less capacity without a starting rheostat, while 
 for larger motors the rheostat is used. 
 
 The factors contributing to the successful intro- 
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 of line construction, and aliility tn serve power con- 
 sumers from lighting circuits through a single step- 
 down transformer and a single integrating wattmeter. 
 Under llu- cunlrid df individual feeder regulators, 
 serxice regulatinu is nnt seriimsh' imi)aired by giving 
 single-phase motur service frnm llie lighting system; 
 and nut only in outlying. l)ut in cnuccntratcd dis- 
 tricts, the American central stations are finding the 
 single-phase motor a profitable means for the devel- 
 opment of day load. 
 
 The transformers manufactured by the W'agncr
 
 2j/^ The St. Louis 
 
 Companj- arc of the single-phase U'pe. The shell 
 form of construction is employed throughout all 
 sizes. 
 
 In the remaining lines of manufacture, the prod- 
 ucts of the Wagner Company correspond to the 
 usual standard forms f)f construction, the distinguish- 
 ing characteristics being in details largely. 
 
 The Wagner Electric Manufacturing Company's 
 general offices are located at the works of the com- 
 pany. A comprehensive display of the products of 
 the company may be seen in Electricity Building, on 
 the Louisiana Purchase Exposition Grounds.
 
 The Emerson Electric Manufactur- 
 ing Company 
 
 MaXIFACTLKEKS of AlTERXATIXG AXl) DlRErT-ClRKEXT 
 
 Motors of Small Sizes 
 
 THIS company was organized in 1890 by Judge 
 J. W. Emerson, A. W. !Meston, and C. R. 
 Meston. The company brought out in 1891 
 the first successful alternating-current fan- 
 motor designed for use on high-frequency circuits. 
 This was a brush and commutator magnetic motor. 
 Many of them are still in successful operation on this 
 kind of current. 
 
 About 1895 the use of 60-cycle current l)ecame 
 quite general and the company took up the manufac- 
 ture of induction motors to operate at this low fre- 
 quencj-. In 1897 they also designed the first direct- 
 connected slow-speed alternating-current ceiling fan- 
 motor. This motor at once became the standard, 
 and has remained the standard ceiling fan-motor for 
 the alternating current up to the present time. 
 
 The success of this motor has changed the lay- 
 ing out of central station fan circuits. Before the 
 introduction of this fan it was considered necessary 
 to run separate ceiling fan circuits from a direct- 
 current machine, and handle these fan circuits as 
 power circuits; now the practice is to run all fans, 
 both desk and ceiling, from the lighting circuits, and 
 thus render double wiring unnecessary. Many sta- 
 tions have discontinued their high-pressure direct- 
 current fan circuits entirely on this account. 
 
 This companj^ manufactures a varied line of 
 single-phase alternating-current power motors of tlie 
 induction type, from the smallest size (about 1-50
 
 2j6 The St. Lou is 
 
 h. p.) up to and including Yz h. p. They also manu- 
 facture single-phase alternating-current motors with 
 brushes and Cdmmutator from i h. p. to 2.5 h, p. 
 During the past two years they have commenced 
 manufacturing direct-current motors of practically 
 the same sizes as the alternating current. This com- 
 pany makes about 400 dififerent kinds of motors 
 under i h. p. in size. 
 
 In 1903 this company built a new factor\- front- 
 ing 108 ft. on Washington avenue, 150 ft. on Tvventy- 
 tirst street and 108 ft. on St. Charles street. This is 
 a heavy, slow-combustion building, with si.K stories 
 and basement. The basement contains the heavy 
 work, such as punching, and also a heavy stock of 
 castings. The first floor is the general office, sample 
 room, and shipping department. The second floor 
 is the drafting room and machine shop. The third 
 floor has the time-keeping and production office and 
 stock room. The fourth floor is the assembling 
 room. At the present time the fifth and sixth floors 
 are rented out on a short lease. 
 
 The light and power for the entire building is 
 supplied by a power plant located at one end of the 
 basement. The plant contains two 50-kw., 500-volt 
 generators, driven bj- high-speed four-ported en- 
 closed engines. The lighting is on the three-wire 
 system at 225-450 volts, the balance being provided 
 by a lo-kw. balancer set. This balancer also fur- 
 nislies current at 250 volts for testing small motors. 
 All machinery used throughout the entire factory, 
 as well as the elevators, are operated by electric 
 motors.
 
 The Moloney Electric Company 
 
 THE Moluney I-llectric Company was organized 
 in Jnly, 1898. fi»r the manufacture of alter- 
 nating-current transformers. It occupied at 
 the outset one small room of about 1.200 
 sq. ft. of floor space; later on the growth of the busi- 
 ness necessitated removal to a new three-storj^ brick 
 building at Seventh and Hickory streets, containing 
 
 T'^l^ 
 
 35.000 s<i. ft. of tloor space. This building is ligiit 
 and airy, and the shops are provided with a modern 
 etpiipment for the economical manufacture of its 
 product. The machine tools are electrically driven, 
 current being supplied from the street mains, and 
 the building is electrically lighted throughout. 
 
 The standard Moloney transformer is of the 
 
 277
 
 278 
 
 T he St. L t) u is 
 
 Cdrc type, and is made to meet all ciininiercial rc- 
 (|uirenu-nts as tu ca])acit3' and N'oltage, though a 
 large portion of the output consists of special types 
 to meet particular conditions. The new plant has 
 been specially designed for the manufacture nf high- 
 voltage transformers. 
 
 The core consists of high-grade sheet steel, cut 
 into rectangular strips: these are assembled so that 
 joints are broken in alternate layers. The secondary 
 is wound next to the core and is insulated from it 
 
 so as to withstand a break-down test of 3,000 volts. 
 In the smaller transformers the winding is composed 
 of round wire, while in the mediimi and large sizes, 
 square or rectangular copper strip is used. In sizes 
 of over 2.5-kw. capacity, the winding is equally di- 
 vided between the two legs of the core. A low cur- 
 rent density is used, thus insuring small copper loss 
 and close regulation. 
 
 The primary winding is placed outside the sec- 
 ondary coils, the insulation between the two consist- 
 ing of a cylindrical shield of mica and varnished 
 cloth. For high-voltage transformers, working at 
 6.600 volts or higher, a grounded metal shield is
 
 E 1 c c t r i col H a n d h o o k 
 
 279 
 
 placed between the ])rimar3' and secondary for the 
 protection of the latter in ease of the development of 
 a fault in the insulation. Standard transformers de- 
 signed for 2,300 primary volts are subjected to a shop 
 break-down test of 12,000 v(dts between primary and 
 secondary windings; this potential is proportionally 
 increased for higher working voltages. 
 
 The primary coils are wound over the instilating 
 shield which separates them from the secondary and 
 the insulation between layers extends three-fourths 
 of an inch beyond the last turn of each layer. The 
 ])rimary coil is subdivided in transformers of large 
 size So as to limit the electromotive force between 
 layers. 
 
 After assembling, all transformers arc tested for 
 iron and copper losses and regulation, and the pri- 
 mary coils of 2,000-volt transformers are tested by 
 the application of a pressure of 6,000 volts for five 
 minutes.
 
 The Columbia Incaiidescent Lamp 
 Company 
 
 THE manufacture of incandescent lamps in Amer- 
 ica has assumed tremendous proportions since 
 the beginning of incandescent Hghting 25 years 
 ago. It is estimated at the present time that 
 there are used annually in this country about 40,000,000 
 incandescent lamps. It has never been possible to deter- 
 mine the exact number, but the figures do not seem to be 
 very far away from those given. 
 
 When incandescent lamps were first introduced the 
 selling price was from $1.00 to $1.25 each. At present 
 the process of manufacture has been developed to such an 
 extent that the cost is reduced to from 16 to 18 cents 
 each. 
 
 The old forms of commercial incandescent lamps were 
 not markedly different from those in use now, although 
 in the past 10 or 15 years there have been a number of 
 developments along particular lines, giving a peculiar 
 appearance to some of the lamps. Some lamps were 
 manufactured with a flat instead of a spherical bottom 
 at the end opposite the base. Others were exhausted at 
 the neck of the lamp instead of at the bottom of the bulb. 
 Other lamps were made flat on one side, — all of these 
 peculiarly shaped lamps have given way to the pear- 
 shaped bulb now generally used. 
 
 The incandescent lamps as made in America include 
 in addition to the 16 and 2>- c-p. lamps which burn on 
 circuits of no and 220 volts, battery lamps which are 
 operated from an ordinary primary battery, and lamps 
 which run as low as i or 2 c-p. These are made in va- 
 rious shapes, including spherical bulbs, pear-shaped bulbs 
 and decorative bulbs of the various sorts. The realm of 
 incandescent lamps is further increased by various forms
 
 Electrical Ha n d h o o k 281 
 
 wliich are made for use in medical and surgical work. 
 The sizes vary from a small bulb having a diameter of, 
 say, one-eighth of an inch to lamps as high as 150 c-p. 
 The larger sizes, however, are rarely used, though they 
 maj- be obtained from some sources. Some of the de- 
 signs of the decorative lamps are very prettj' and add 
 materially to the illuminating effect where decoration is 
 desired. 
 
 There are also added to the styles of lamps those hav- 
 ing frosted bulbs and reflector lamps, the latter being a 
 
 relatixely recent innfi\atii)n. I lusr latter very fre- 
 quently have the lower half of the lamp bulb frosted, 
 while over the upper half fits closely a prismatic glass 
 reflector, or an aluminum cap with a tinned or silvered 
 surface which increases the illuminating power of the 
 lamp. It is claimed that an ordinary 16 c-p. lamp burn- 
 ing at no volts will increase its illuminating power prac- 
 tically to double its ordinary light. 
 
 In the manufacture of incandescent lamps the greatest 
 care is necessary that all of the parts are carefully made 
 and carefully assembled. The glass composing the bulb 
 must lie of the best quality for the work. The filaments,
 
 282 T he St. Lou i s 
 
 which most manutacturers make for themselves, receive 
 very careful attention, and in the process of sealing-in 
 the filaments and exhausting the lamps a high degree of 
 workmanslii]) is re(|uired. In America the lamps must 
 not only give 16 c-p., but they must as well maintain 
 their initial candle-power for periods running from 600 
 to 8co hours. The demand for good incandescent serv- 
 ice and the competition between the manufacturers is so 
 keen that this is ;in important feature. 
 
 In the manufacture of incandescent lamps the fila- 
 ment, which is the life of the lamp, receives a great deal 
 of attention. 'I'he majority of lamp manufacturers now 
 use cellulose filaments. These are drawn through glass 
 dies, carbonized, and flashed in a hydrocarbon-vapor, se- 
 curing a result that has given the best work. The differ- 
 ent manufacturers use filaments of various shapes. Very 
 frequently the length and the particular shape of the fila- 
 ment is used by the manufacturer as a selling-point for 
 his lamps. Some users of lamps affect to disregard the 
 shape of the filament so long as the photometric test 
 gives a 16 spherical candle-power. It has been found 
 that the lamp with a generous filament distributed in the 
 bulb in an advantageous way will give good lighting 
 service. 
 
 In the manufacture of the Columbia incandescent 
 lamps every precaution is taken to make a completely 
 successful product in every respect. The company was 
 organized in July. i88g, and incorporated in 1890, with 
 J. H. Rhotehamel, president ; W. H. Welch, vice-presi- 
 dent, and E. J. Keist, secretary and treasurer. The com- 
 pany began business at 515 Elm street, St. Louis, with an 
 output of about 50 lamps per day. The latter part of the 
 year of their incorporation the factory and offices were 
 moved to igi2 Olive street, where the manufacturing 
 capacity was douliled and the output increased to 100 
 lamps per day. For twelve years the company continued 
 at that address, turning out a splendid quality of incan- 
 descent lamp and making a special feature of careful in- 
 spection over every step of the manufacture of each lamp. 
 
 Towards the end of 1902 the company changed its
 
 Electrical Han d h o o k sS^ 
 
 location to its present quarters at 21 15-ji 17-2119 Locust 
 street, St. Louis, thus moving into a new and modern 
 factory building where everj- facility is afforded for the 
 making of a good lamp. The company has been fore- 
 most in all that is good and progressive in the making of 
 an incandescent lamp, and is now turning out so many 
 lamps that there is probably only one other manufac- 
 turer in America that exceeds it in annual output. The 
 policy of the company directs that the lamps must be per- 
 fect in every respect, that they shall stand up under hard 
 and long continued use, and that their quality must be 
 maintained. As a result of this policy, rigidly adhered to 
 through all the years of the manufacture, the business of 
 the companj- has e.xtended into every part of the United 
 States of America, into Canada and into Mexico, in ad- 
 dition to which a very consideral)le foreign trade has 
 been secured. 
 
 In 1891 Mr. W. O. Garrison was elected vice-presi- 
 dent of the company and Mr. A. C. Garrison secretary 
 and treasurer. In i8g8 the original president of the com- 
 pany died and Mr. \\'. O. Garrison was elected as his 
 successor. 
 
 The company has kept pace with the increasing and 
 varied demand for lamps by manufacturing almost every 
 conceivable shape and size, including not only a full line 
 in standard voltages and for high-voltage circuits, from 
 200 to 250 volts, but also special lamps for railroad car 
 lighting on low voltage, on storage-batteries, as well as 
 for the axle-lighting system. In the high-voltage lamps 
 export orders from England and Scotland h&ve grown to 
 immense- proportions. The manufacturing establishment 
 is thoroughly equipped and is complete in everj' detail. 
 
 The company has been notably active and successful 
 in the fifteen years of its existence. This success is due 
 chietly to the fidelity- of its officers and its employees, the 
 heads of the various departments being men of large 
 experience in their respective lines of work and having 
 remained with the company for long periods of time.
 
 The United States Incandescent 
 L^anip Company 
 
 THE U. S. Incaxdescext Lamt Company, located 
 at 201-203 South Jefferson avenue, was organized 
 in 1898. Their principal business has been done 
 with the leading electrical supply houses through- 
 out the United States. 
 
 This company manufactures all standard-type lamps 
 from 45 to 260 volts, and with candle-power range from 
 2 to 150 candles. Daily capacity is 5,000 lamps. This 
 company has a working exhibit in the Palace of Electric- 
 ity at the Louisiana Purchase Exposition, it being the 
 first public exhibition of all processes emploj'ed in the 
 manufacture of incandescent lamps. These processes are 
 in general familiar to all electrical engineers, but partic- 
 ular interest will be centred in the method employed to 
 obtain a vacuum, known as the chemical process. The 
 company also exhibits a method of manufacturing cellu- 
 lose. 
 
 The cellulose is made from absorbent cotton and is 
 dissolved in a chloride of zinc solution to the consistency 
 of glucose, and is then squirted through a glass die and 
 falls into a vessel of alcohol. This vessel revolves at the 
 same rate of speed as that at which the cellulose is 
 squirted, this action being necessary to keep the cellulose 
 from being drav^^n. The cellulose is then dried, formed 
 as desired, and carbonized in the well-known manner. 
 It is then treated in a vacuum chamber into which gases 
 are admitted, giving the filament a carbon deposit of 
 great density, and making it of uniform cross-section ; 
 then it is mounted on a stem by a graphite cement which 
 holds it firmly to the platinum leading-in wires. 
 
 The stem is made of glass tubing flanged to fit the 
 neck of the bulb at one end and the copper leading-in 
 
 284
 
 Electrical H a )i d b o o k 
 
 2S- 
 
 wires at the point at which the phitinum wires are 
 joined to the copper, are pressed into the glass, making 
 a perfect seal at the other end. 
 
 The glass bulb is first cleansed and then a glass tube 
 is attached to the bottom of the bulb, thus furnishing the 
 means for obtaining the vacuum, as well as for use by the 
 operators in handling the bulb while performing the op- 
 eration of removing the neck preparatory to sealing-in 
 the stem. 
 
 The stem to which the filament is attached is then 
 
 .Squirting Cellulose Filament 
 
 hermetically scaled in the bulb. This, like all other 
 glass-working operations, is performed by revolving the 
 glass so as to heat it uniformly in a gas glass-blower's 
 fire; this operation is usually done by mechanical means, 
 thus insuring uniform heating. 
 
 Then comes the most important process of all, the 
 obtaining of the vacuum in the bulb. The process em- 
 ployed is known as the "chemical." It consists first in 
 introducing into tlie glass tube, at the bottom of the bulb, 
 a chemical which at a low temperature volatalizes, produc- 
 ing a vajjor which tmites with gases generated or freed
 
 '86 
 
 T li c St. Lou i s 
 
 from llie tilanK-m and graphite joints wiien tlic- filanu-nt 
 is snhmitted to intense incandescence during the time tlie 
 lamps are attached to the vacuum-pump. The gases so 
 formed appear in the bulb in the form of a blue haze 
 and when comliined with the vapor generated by heating 
 the chemical in the tube are condensed and deposited on 
 the inner surface of the bull). The tube is then "sealed- 
 off," leaving the small tip at the bottom of the lamp. 
 The lamp is tested to determine the vacuum. Each lamp 
 is then tested by a photometer to determine its exact 
 
 Chemical N'aciium ^l■occ^s 
 
 voltage and current consumption at the desired candle- 
 power. 
 
 The base for making contact is then attached by 
 means of a water-proof cement, and the leading-in wires 
 soldered thereto, thus completing the lamp. Each lamp 
 is inspected at each step in its manufacture, and all im- 
 perfect ones rejected. 
 
 Many of the processes above enumerated are patented 
 but employed by the best manufacturers under license. 
 The principal difference between all high-grade lamps 
 of a given rating consists solely in the variations in 
 voltage and current consumption.
 
 TH 
 2S 
 S2 
 A5 
 
 THE LIBRARY 
 UNIVERSITY OF CALIFORNIA 
 
 Santa Barbara 
 
 1 
 
 THIS BOOK IS DUE ON THE LAST DATE 
 STAMPED BELOW. 
 
 Series 9482
 
 UC SOUTHERN REG'C-;-: 
 
 A 000 570 621 3