. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Fig. 61. Type L Triple Valve, Showing Release and Charging PositionCourtesy of Westinghouse Air Brake Company, Wilmerding, Pennsylvania y and j into chamber R and the auxiliary reservoir. This checkvalve then prevents any back flow of air from the auxiliary reservoirto the brake pipe. At the same time, port h registers with port x,and the air in chamber R also flows through these ports and xand x into the supplementary reservoir. Both the auxiliary andsupplem
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Fig. 61. Type L Triple Valve, Showing Release and Charging PositionCourtesy of Westinghouse Air Brake Company, Wilmerding, Pennsylvania y and j into chamber R and the auxiliary reservoir. This checkvalve then prevents any back flow of air from the auxiliary reservoirto the brake pipe. At the same time, port h registers with port x,and the air in chamber R also flows through these ports and xand x into the supplementary reservoir. Both the auxiliary andsupplementary reservoirs are thus charged at the same time and AIR BRAKES 81 to the same pressure from the brake pipe through the two differentchannels already mentioned. With the parts in the above-mentioned position, air from thebrake cylinder, entering the triple valve at C\ flows through passager, port 71, large cavity lo in the graduating valve, and ports vi andp to the atmosphere, thus releasing the Fig. 62. Type L Triple Valve, Showing Quick-Service PositionCourtesy of Wcstinghousc Air Brake Company, Wilmerding, Pennsylvania Service Aiyplication. A service reduction in brake-pipe pressurereduces the pressure in chamber h and on the face of the trii)lc-valve piston below that in the auxiliary reservoir on the oppositeside of the piston. The higher auxiliary reservoir pressure, there-fore, forces the piston in the direction of the lower brake-pipe pres-sure, carrying with it the attached graduating valve. The firstmovement of the piston closes the ports J, ?/?, and /»•, Fig. 01, thusshutting off communication between the brake pipe and the aux- S2 AIR BRAKES iliary and supplementary reservoirs and closing the exhaust passagefrom the brake cylinder to the atmosphere. The same movementopens port s and connects ports Q and o in the main slide valvetlirough the small cavity in the graduating valve, Fig. spider, or lugs, on the end of the main slide valve, whichis ca
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidairbrakesuptodat00ludy
