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Tous les autres exemplaires origiriaux sont film6s en commenpant par la premidre page qui comporte une empro^inte d'impression ou d'illustration et en terminant par la dernidre page qui comporte une telle empreinte. Un des symboles suivants apparattra sur la dernidre image de cheque microfiche, selon le cas: le symbols — ► signifie "A SUIVRE ". le symbols V signifie "FIN". Les cartes, planches, tableaux, etc., peuvent dtre fiimds d des taux de reduction diffdrents. Lorsque le document est trop grand pour dtte reproduit en un seul clich6. il est film6 d partir de I'angle supdrieur gauche, de gauche d droite. et de haut en bas. en prenant le nombre d'images ndcessaire. Les diagrammes suivants illustrent la m^thode. 1 2 3 1 2 3 4 5 6 OOBIET'S OOiCE-O^EH^. I'a.ten.ted. :Decem.Toer 21st, ISTS. J. KOENIGSBERG, Sole ^^g-ent for tHe TJnited. States anci Caonad-a. MACHiNEKY HALL, A. :.7. p. o. box, 1«4 HUNTIxVGDoN, I'EN>sA. Wit'.iiii ii few years coke lias liccoiiic a Iciidirii:' fuel tor hlasl riiniaccs. As this cdUMtry is tavcn'cil willi an ai)iiii(laii(;(' of oood <|iiality (if<'(iai, gnat iiKliHi'rciicc lias Ik'cii shown in tlic maUiiii!- o<' coke ; it is generally made in the open air, by sini))ly liring a heap of coal, or in coke ovens conslrncted on very iii'iniitivc plans. The vuliie of coke ovens i^ coidincd rigidly to the economy of labor in the process of coking, in saving of carl)oii, and in production of ii dense and pnrc coke. By his constrncting a great miniber of coke ovens in llljiuai, Prussia and .\ustria, the inventor lias been in a position to .study and appreciate the defects inherent to each system, and he has invented a coke oven wherein the imperfections rccogm/ed in the other systems arc avoidcil, and to which he has given the improvements discovered by a long [)ractice in this line of busi- ness. His invention has enti'cly snccci'ded, and his coke ovens are in general use in EurojH'. This year they were introduced in this <'ounlry, and a small row was erected for the Kembh' Coal and Iron Company, at Kiddlesburg, Hedford County, Pii. Tlie Hroiid Top c(jal used there is semi-bituminous, ,t very dry) and yiehled in these ovens MO per cent, of silver gray, dense, pure and sonorous coke, e(|ual to the best coke in (his country. In the same ovens, several charges of Clearfield County coal (bitu- minous) and Jefferson County coal (highly bituminous) have been coked, and gave a iH'autiful coke. The following is a resume of the advantages of these coke ovens : 1. Itegular and complete combustion of the gases of carbonization. 2. Highly bituminous, as well as {' eoal. (i. Troduction of a fine silver gray, dense and sonorous coke. 7. \'ery great durability of coke ovens, proved by the existing ones. 8. Tlio attendance is easy and cheap. 9. The time for charging and discharging is fnmi 8 to 10 minutes only. This invention consists in combining with a coke oven g(>nerall> 24 feet long, 2 to (i feet wide, ami 4 to 7 feet high, a series of flues, these flues l)eing made to communicate! with the interior of the oven in such a manner that the heated gases which escape from the oven envelope in burning condition said oven from all sides, and thereby a uniform heat Is produced and the formaticm of coke is materially facilitated. The ovens are generally arranged in single groups from 10 to 2."), connected to a common chimney. In front of them the discharging machine is placed. These ovens are entirely independent, one from the other, and have nothing in common except the main Hue and the partition wall between each other, so that each oven can b.' W(U'ked sejiarately, if desiivd. I'lach oven is provided with two supply funnels (charging holes), whicii extend down through the top, and which are cov- ered with cast-iron shutter^, lined with tire-clay, so that they can be closed imniediatdy after the oven has been cliarg(>d. Pre- vious to introducing the coal the ovens are healed to a white heat, and as the coals are passing to tluse heated ovens they evolve a ([uantity of gas which is inuiiediately ignited by its entry in the upper side flue, and passes in a burning condition all around each oven, so as to envelope the satne in a coiii|)lete sheet of lire and heat it uniformly at all points. The gases which rise in one of the ovens escape through the lateral channels into the upjiei' side flues, which extemi along one side of the oven, and whicli communicate through channels at their outer ends with the lower Hues. From the.-e lower flues the burning gases passes through channels into the bottom Hues, the channels being situated at theiioier ends of the side Hues, so that the burning gases nuist ti'avel through the Hues in a zig-zag course. The bottom Hues are situated beneath the sole of the oven, and they ext-nd from the centre towards the out>ide of the walls enclosing the ovens, whei'e said flues connect by chiinnels with the return bottom Hues, which c:mimunicate at their inner ends by ascending channels with the lower side Hues of the other side of the oven. From the outer end of these lower side Hues the burning gases ascend through chamiel- into the upper side flues, which communicMte at their inner ends through as.'endiug cha'uiels with the main Hue. \W forcing the gases through all these ;d)ove licscribed Hues it will !)e seen that the buruiuir uum'S. i' na.-^inu ihioiedi these iti ga,- pa.-^mg (iiiougii lii( lues, u il II each oven unifurmU fn Si(l( and no additional fuel is rei|uired to keep up the necessarv heal in the ovens. I''rom each Junction of the ascemling channels with the main flue extends a lateral Hue towards the outside of the brick wall ellclo. ing 1 1 eeiiding chaniu the lateral Hue; le ovens, where llie same is closed l)\- stlllallie cover:' Tl irouiili tlies( th and III lati e I'irculation o the I lurning gases can be rcLiulalcd • V suitali lal h'd: era! flues access can lie liad to I'le as- imiiers, which can he ooera led tl iroiiuli In onlw t.. kfop lip llin l.oat of tlie ovens to tlio iv.|niiv(l .le.oiv,., it is .Ifsiml.lc to cffecl tlic oiicnitioiis of charfrinK and dis- cliiirging tlu> ovens in the shortest possible! time. The .pveiis are charge.l hy incans uf carts, whirji run on iron tra.-ks on the top of the ovens, said carts being of HUftieient eapaeity to eontain eiioiiirh coal for .•haririiig one-half of eaeli oven, an.l while each oven is provided with two siij)ply funnels, a siiffi-ient .niaiility of coal can he introdii..,'.! into the same hv openiii- huth funnels siimiltaneiaisly, and dnin])ing a load of coal into each at the same linie. For the piiriwsc of diseharj-ing the ovens a machine is used, which runs <.n a track at the side ..f il,.. stnictnre, and is pro- vided with a pliinu-er fitting the oveiw. This raaehine discharges one civcii in three minutes. The ovens are provided with doors at both en. Is, said (h)or> bciim- made of cast-iron and lined with tire-clay. Haeh of them isprovi.led with a small door, working (m hinges, to enable the firemen to spread (he coal in the oven after they have been dumped. In .eh of liie partition wails, between the adjoining .,vens, are two sets of air fines, which communicate with the side fines of the .,ven for the purpose of intro.liicing the re.piiMte (juantity of oxygen to siipp(.rt combustion of irases. In said side flues are also openings ihr the purpose of obs(!rving the process of combustion, and to clean out \\h'. flues if necessarv These openings have to be kept closed. Hy these nu-ans the ovens, after they have been once heat.'d up, can b,. kepi -..i,,,,. "fi,,. ji,, j,,. d<'finit(- time without re.piiring any a.hlitional fuel to heat iIumm, and, if one or more of the ovens sh.aild beeoni." defective, they can be thrown out of operation and repaired without disturbing the action of lhi> remainiiii;- ovens. Till' heat in these ovens is uniform. This has effi.ct that the material of which the ovens are built never sulfur by contnie- tion or expansion, which makes this .,veii more durable than any mie in us.. n..w. As ab..ve meiili.aie.l, the said .M.ke "..vens are alrea.ly in use in Austria, Prussia, Franc.', lielgium, Kn-land, an. lately introdii.r.l in Am.MMca. Particulars may be ha. 1 . .11 ivsiilts Ih.y give by applying to the KKMUFJ-: ('().\F. AM) IKON ('OMI'AW, Rid.Ucs- burg, IJ.'dfiird County, Pa. WM. LAUBER, Gen'l Superintendent. X^- E r- E I^ 3=2 IsT C E S . EUROPE. At:sTi!iAN Statk K.Mr.wAV Company, (Kesdiit/ka). Central Direct.jr M. Lecointe, Sehwarzenbergiilat/., \'ienna. Bahon RoTHsciiri.i) W.)i!Ks, AVitkowitz. Director M. A. Andree, imp. and royal C.ainsellor of iniiies, 'witk..witz, near 3Ialir. Ostraii, M.)iavia. Ahciidikk Ai.1!Im;(IIt Woi!Ks, Trzinietz. Inspect.)r of Mines and Works: M. I'hlig, Tesclion. Austrian Silesia. Innkrhi-,i!.(Ki: Co.mi-aw. Oslawan, near Briiim. Dinietor-' 'eneral :dr. Aug. Schuchard, ^'iebeluugeugas.