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 OFFICE OFT 
 
 ANGUS SINCLAIR. 
 
 Secretary. 
 
 
 
 175 
 
 DEARE 
 
 / 
 
 / 
 
 Traction Increasers in connec 
 
 I. Can the defect ot an over 
 (a) By the application of a T: 
 {/>) Would you in preference 
 with a steel bush (a practice conimc 
 
 (c) That additional dead wei 
 driving wheels ; or 
 
 (d) That a lower boiler pre; 
 steam expansion ? 
 
 2. If you approve of use of a 
 American engine, would you also re 
 Consolidation and Decapod engines 
 application to four-wheel-coupled ei 
 
 3. Having equipped an engir 
 dispense with sand and sand box ? 
 
 4. {a) In your opinion does a '1 
 the engine wheel base, thereby inci 
 curves ? 
 
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 'fcan iJailway jjllasten |j|^ecbanics' j|(ssociat[on. 
 OFFICE OF THE SECRETARY. 
 
 ICLAIR. 
 
 Secretary. 
 
 J. H. SETCHEL, 
 
 President. 
 
 175 DEARBORN STREET, 
 
 CHIOJGO, October 13th, 1HH7. 
 
 n Increasers in connection with Over-Cy!indered Engines. 
 
 an the defect ot an over-cylindered engine be best remedied— 
 
 3y the application of a Traction Increaser ; or 
 
 Vould you in preference recommend that the cylinders be lined 
 
 1 bush (a practice common in marine service) ; or 
 
 'hat additional dead weight be judiciously distributed over all 
 
 eels ; or 
 
 rhat a lower boiler pressure be used with an altered ratio of 
 insion ? 
 
 you approve of use of a Traction Increasers on the standard 
 ■ngine, would you also recommend their application to Mogul, 
 on and Decapod engines ? If not, why would you restrict their 
 
 to four-wheel-coupled engines ? 
 
 aving equipped an engine with Traction Increaser would you 
 ith sand and sand box ? 
 
 In your opinion does a Traction Increaser practically lengthen 
 wheel base, thereby increasing the locomotive resistance on 
 
{/f) Can you quote an experiment showing the difference in haulage 
 capacity of an engine so eciuipped — first on tangent and then on curve ? 
 
 {{■) If you have an engine equipped, will you try this experiment, and 
 communicate the results? 
 
 5. If Traction Increasers are of acknowledged use in case of emer- 
 gency, is there any reason why they should not be used continuously, and 
 thus utilize each trip the advantage of the increased haulage capacity (this 
 being the service for which patentees claim that Traction Increasers were 
 designed) ? 
 
 6. If they are useful at low speeds, is there any reason why they 
 cannot be made just as useful at high speeds ? 
 
 7. (a) Are you familiar with any schemes for increasing traction 
 other than those known as Dees, Purves, Craven (automatic traction draw 
 bar), and The Locomotive Improvement Company's ? 
 
 (/^) Would not the simple application of screw and lever (as used in 
 European practice to increase the weight on a single driving axle), accom- 
 plish the desired end as effectively as the above mentioned designs ? 
 
 8. Have engines, regularly using Traction Increaser, developed any 
 special failures in springs, spring gear, side rods, cylinders, loose tire or 
 special wear on tires, or in cracks in frame, horns and horn stays ? 
 
 9. Give any information possible as to first cost, cost of application 
 and cost of repairs to Traction Increaser, also additional outlay or esti- 
 mated saving in the cost of general repairs of engines fitted with the 
 Traction Increaser ? 
 
 This Committee would like to have their report in the hands of the 
 Executive not later than the last day of April, 1888. 
 
 Committee 
 
 J. DAVIS BARNETT, 
 F. L. WANKLYN, 
 T. J. HATSVVELL. 
 
 Replies to be addressed to J. DAVIS BARNETT, Mechanical Superintendent, Grand 
 Trunk Railway, PORT HOPE, ONT. 
 
 ANGUS SINCLAIR, Secretary.