. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . o stop obscuring the visionof the enginemen and carrying off oil in-tended for lubrication. It opens when thelocomotive gets in motion and closeswhen it stops, and there is no steam invalve chambers when engine is standingto cause engine to reverse hard. It will be noted that the supplementalvalve is placed in the pipe line at a pointin the cab where the air gauge can beeasily seen by the enginemen. Steam be-ing turned on from the boiler never needbe shut off unless it is necessary to makerep
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . o stop obscuring the visionof the enginemen and carrying off oil in-tended for lubrication. It opens when thelocomotive gets in motion and closeswhen it stops, and there is no steam invalve chambers when engine is standingto cause engine to reverse hard. It will be noted that the supplementalvalve is placed in the pipe line at a pointin the cab where the air gauge can beeasily seen by the enginemen. Steam be-ing turned on from the boiler never needbe shut off unless it is necessary to makerepairs, as the supplemental valve con-trols the steam that goes through the pipeline to the header. The air pipe connec-tion to the head of the supplemental valve and the latter is held open against boilerpressure while the engine is moving, al-lowing steam to • pass through the pipeline to the header. When the locomotive stops, the ballvalve seats itself, cutting off the flow ofair to the air cylinders of the supplemen-tal valve. A small vent port allows theair to escape. The coiled spring around. TO STC<»IW cuesT . VIEW OF ZERBE DEVICE. cylinder has a ball valve in the pipe, andan air gauge connected. The ball valvecase is connected to main reservoir, andreceives air at reduced pressure. Whena locomotive is standing the ball is on itsseat, and allows no air to pass. Whenthe locomotive moves the swaying andjarring unseats the ball causing it to rollabout in the chamber, allowing air to passthrough the pipe continuously to the airpiston, which is connected to a disc valve. Bench Hose Venting Device. By J. A, Jesson, Louisville & NashvilleRailroad, Corbin, Ky. The accompanying diagrammatic illus-tration shows the details of an automaticair blast, adapted for attachment to theshop bench. It consists of a discardedfeed valve, a feed valve bracket, and a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
