. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . lide Valve Fig. 117. Normal Position of Westinghouse 3-E Control Valve 129 with the accompanying explanation refers to the operation ofthe valve with the cap adjusted for direct release. AIR BRAKES 141 Release and Charging Position Fig. 118 shows only those parts and ports which are operativewhile the brake is being released and the pressure chamber andemergency and service reservoirs are being charged. Charging Empty Equipment. In charging the empty equip-me
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . lide Valve Fig. 117. Normal Position of Westinghouse 3-E Control Valve 129 with the accompanying explanation refers to the operation ofthe valve with the cap adjusted for direct release. AIR BRAKES 141 Release and Charging Position Fig. 118 shows only those parts and ports which are operativewhile the brake is being released and the pressure chamber andemergency and service reservoirs are being charged. Charging Empty Equipment. In charging the empty equip-ment, air from the brake pipe entering the control valve at the pointindicated passes to chambers B and A and forces the equalizing andrelease pistons of the equalizing portion, with their attached valves,to release position. Brake-pipe air then passes from chamber B,lifting the equalizing check valve, and by way of the equalizing slide Spring. Release G^ad Spring EqualizingFisfon Valve Valve EqualizingQnod. Valve ^ Reduction Li mil in q~ ChamberEx. EqualizingSlide Valve Equalizing-Piston Step er. ^ReleoseSiide Valve ,;. .^wf i rvx ■ Emergency Piston Ex Jdjj* equalizing Stop Spring nirecl&Grad RelCap ^ Position for Crad. Release Sen Cgl Emerg. Cyl. Ex. Emerg. Res- Fig. 118. Release Position, Charging-Pressure Chamber, Emergency andService Reservoirs for Westinghouse 3-E Control Valve valve into chamber J). Air from chamber J) then flows throughthe equalizing graduating and slide valve—so shown in the dia-grammatic drawing for the sake of clearness. In this and a numberof instances following, this port in actual valves opens past the endof instead of through the graduating valve, past the emergency-reservoir check valve, and thence in two directions: (1) to chamberR and to the emergency reservoir, and (2) through the equalizingslide valve to two different ports, one connecting to the service-reservoir charging valve and thence to the servic
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