. The science of railways . separate exhaust valve E, the removal of press-ure from chamber L would cause the interceptingvalve to close, assisted by the live steam pressureon the reducing valve shoulder, and thus all valves T/ie 7?tc^77Z0?z^ Compoun/Z^ Hess ^/«/fe. would remain as in Fig. 152 until the engineerdesired to work compound again. Then hewould simply close the separate exhaust valve E 252 ENGINEERS AND FIREMENS MANUAL, and permit the valves to automatically assumecompound working by the accumulation of press-ure in the receiver B. The annular shaped reducing valve appears somuch li
. The science of railways . separate exhaust valve E, the removal of press-ure from chamber L would cause the interceptingvalve to close, assisted by the live steam pressureon the reducing valve shoulder, and thus all valves T/ie 7?tc^77Z0?z^ Compoun/Z^ Hess ^/«/fe. would remain as in Fig. 152 until the engineerdesired to work compound again. Then hewould simply close the separate exhaust valve E 252 ENGINEERS AND FIREMENS MANUAL, and permit the valves to automatically assumecompound working by the accumulation of press-ure in the receiver B. The annular shaped reducing valve appears somuch like an inoperative sleeve around the in-tercepting valve stem that the se^Darate sketch ismade on a larger scale in Fig. 154, in order to illus-trate its principle the more clearly. Live steamfrom aS bearing against the shoulder e would forcethe reducing valve from the position in the cut tothe right until shoulder e had passed the edge hof the chamber L and live steam thus be admittedto L and the low-x)ressure cylinder. As soon asthe pressure in L became sufficiently great, sayabout half that in S, the valve would closepartly so that only the desired proportion of thefull boiler pressure would l)e admitted to thelow-pressure cylinder. The injurious action of
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1900
