Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . ical sec-tion, in which the coring is shown for steam andexhaust passages. The saddle has an opening c<:redinto the steam-pipe passage, extending from front toback on each sice, where there is a circular flange forconnection to the short length of steam oioe which ^ XX extends from front of saddle to the high-pressurecylinder. Coring this passage through from end toend of saddle makes the cylinders interchangeable foruse on either s
Cyclopedia of locomotive engineering, with examination questions and answers; a practical manual on the construction care and management of modern locomotives . ical sec-tion, in which the coring is shown for steam andexhaust passages. The saddle has an opening c<:redinto the steam-pipe passage, extending from front toback on each sice, where there is a circular flange forconnection to the short length of steam oioe which ^ XX extends from front of saddle to the high-pressurecylinder. Coring this passage through from end toend of saddle makes the cylinders interchangeable foruse on either side. Starting Valve. To work the engine, simple or com- COMPOUND LOCOMOTIVES 259 pound, at will, the starting valve shown in Fig. 138 is used, this valve being secured to the side of steam I chest over the high-pressure cylinder, and having direct communication with the steam passages into that cylinder. The by-pass valves for the high- i pressure cylinders are also contained in the casing of I this starting valve and are worked in connection with the latter. By-Pass Valves. For the purpose of relieving thelow-pressure cylinder of excessive pressure when. Figure 138 working steam, or freeing the same cylinder from backpressure when drifting, the by-pass valves shown inFig. 139 are used. These by-pass valves are bolted tothe side of the steam chest near each end of low-pres-sure cylinder, and furnish communication between thesteam chest and steam ports in cylinder. Operation, Working Simple. To start the locomotivesimple—that is, to admit live steam directly to thelow-pressure cylinders—the starting valve A is placed 300 LOCOMOTIVE ENGINEERING in position shown in Fig. 138 by means ot a lever inthe cab. Steam is admitted to high-pressure steamchest through the short steam pipe connecting saddleand chest, and passes through ports D anJ FL whichregister with the high-pressure steam ports in steamchest. From D the steam is admitted to ports E andG, and passes around the by-pass
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlocomot, bookyear1916
