. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . howstwo views, the upper onebeing a horizontal sec-tion through the topcase, showing the rotaryvalve seat, also showingthe different positions ofthe handle, the lower onebeing a vertical describing theoperation of the brakevalve, the different posi-tions will be taken up inthe order in which theyare most generally shown in Fig. 26,there are six positions forthe brake-valve from the ex-treme left, they are:releasCy running,
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . howstwo views, the upper onebeing a horizontal sec-tion through the topcase, showing the rotaryvalve seat, also showingthe different positions ofthe handle, the lower onebeing a vertical describing theoperation of the brakevalve, the different posi-tions will be taken up inthe order in which theyare most generally shown in Fig. 26,there are six positions forthe brake-valve from the ex-treme left, they are:releasCy running, holding,lap, service, and emer-gency. In the operationof the valve the air flowsthrough ports in a man-ner quite similar to thatof the^G-6 brake this reason, the flowof air through the H-6 brake valve, with the handle in its differentpositions, will not be traced. Release and Charging Position. The purpose of this positionis to provide a large and direct passage from the main reservoirto the brake pipe, to permit a rapid flow of air into the latter (1)to charge the train brake system; (2) to quickly release and re-charge. Fig. 26. ^ni Pipe Tap ^4^ E^quoUzing Reservoir Plan and Sectional Elevation of WestinghouseH-6 Automatic Brake Valve AIR BRAKES 43 the brake; but (3) not to release tlie locomotive brakes if theyare applied. If the handle is allowed to remain in this position,the brake system would be charged to main-reservoir avoid this, the handle must be moved to running or holdingposition. To prevent the engineer from forgetting this, a small portdischarges feed-valve-pipe air to the atmosphere in release position. Running Position. This is the proper position of the brake-valve handle (1) when the brakes are charged and ready for use;(2) when the brakes are not being operated; and (3) to releasethe locomotive brakes. This position affords a large direct passagefrom the feed-valve pipe to the brake pipe, so that the latter willcharge up to the pressur
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidairbrakesuptodat00ludy
