Locomotive Breakdown Questions; Answered and Illustrated
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1907 edition. Excerpt: ...184. GUIDES AND CROSS-HEAD Nor IN L1NE--"What would be the result if guides and cross-head were not.41zswcr.--Excessive wear on sides of cross-head and guides, unequal wear in cylinders and cylinder packing rings, difficulty in keeping piston rod packing from blowing and wearing out rapidly, and trouble with main rod brasses, especially in the front end of main rod. A nswer.--Superheated steam is steam heated to a temperature above that due to its pressure. The temperature of steam in contact with water depends on the pressure under which it is generated, as shown in steam METHOD or B'.oc'NG FOR BROKEN SPR'NG, SPR'NG HANGER, 0R EQUAL'ZER. frame by runn ng wh lup on wedge, and block as indicated by upper figure. Next raise second driver on wedge by lower figure, which will release tension so that b ock can be placed under spring as indicated. First raise tables, while superheated steam is at a higher temper-' ature. 186. METHOD or SUPERHEATING STEAM.--"How is steam superheated, and what benefits are derived from it?" Answer.----Steam is superheated by passing through a system of pipes or coils that are placed in the smokebox for this purpose, and the steam in passing from the boiler to the cylinders absorbs the heat from the smoke and gases as they are drawn through the flues and stack, thus increasing its temperature. Superheated steam therefore gives a higher efficiency of the engine, as there is less loss of heat by condensation when it comes in contact with the walls of the cylinders. There are many types of superheaters, and the usual benefit derived from their use is claimed to be about I 3 per cent higher efficiency. 187. DISCONNECTING COMPOUND LocoMoT1vEs.--"In case it was necessary to disconnect on one side...
- Paperback | 66 pages
- 189 x 246 x 4mm | 136g
- 13 Sep 2013
- United States
- Illustrations, black and white