. The science of railways . condensed in the high-pressure cylinder as itpasses with the exhaust steam through the re-ceiver to the low-pressure side. From the re- 294 ENGINEERS AND FIIIEMENS MANUxiL. ported economy of these engines, it would seemthat the object has been largely attained. Referring to Figs. 179 and 181, it will be seenthat the intercepting valve G is fastened to theannular stem H having an enlarged top abovethe space B which is constantly filled with airpressure or live steam from the pipe C when theengine throttle is open, and hence sleeve H willbe found at the top of its tra
. The science of railways . condensed in the high-pressure cylinder as itpasses with the exhaust steam through the re-ceiver to the low-pressure side. From the re- 294 ENGINEERS AND FIIIEMENS MANUxiL. ported economy of these engines, it would seemthat the object has been largely attained. Referring to Figs. 179 and 181, it will be seenthat the intercepting valve G is fastened to theannular stem H having an enlarged top abovethe space B which is constantly filled with airpressure or live steam from the pipe C when theengine throttle is open, and hence sleeve H willbe found at the top of its travel, as illustrated,after the engine has started. The operation is as follows: Open the throttlefor starting and live steam enters the high-pressure steam chest from the induction ports 1 — JDicJ(Sor\.€yontp CvQf^ Section Throti^^Tiec^Uer (Fig. 179) as usual and besides has a connec-tion to F through the top of the steam chest, asshown. There being no pressure in the receiver(to which chamber E is connected throughthe open intercepting valve G), the weight ofN will have caused the converting valve Lto drop down, and thus the live steam passesthrough valve L into the tube AJ. Port K ad-mits steam to the enlarged top of the annularstem H, forcing the intercepting valve G down onits seat B and bringing the ports D in the stem Hopposite the ports J of the central steam tube A,thus admitting live steam through them to the OPE It AT ION OF COMPOUND LOCOMOTIVES. 21)5 receiver and low-pressure steam chest. With theintercepting valve G closed (down), the firsthigh-pressure exhaust, acting in chamber Ethrough the port I?, causes piston N to lift andclose the converting valve L (as shown in and 181), thereby shutting off the supply ofsteam from F to the central tube
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1900
