. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ging the res-ervoirs and during a service applicationof the brakes. duction made at a faster rate than atwhich it can flow from the auxiliary res-ervoir through the feed groove or past theequalizing piston packing ring into thebrake pipe causes a differential in pressurebetween the brake pipe and auxiliary res-ervoir pressures, and as soon as the dif-ference in pressure becomes sufficientlygreat to overcome the resistance of theequalizing piston and slide valve to move- tem must be charged, a
. Railway and locomotive engineering : a practical journal of railway motive power and rolling stock . ging the res-ervoirs and during a service applicationof the brakes. duction made at a faster rate than atwhich it can flow from the auxiliary res-ervoir through the feed groove or past theequalizing piston packing ring into thebrake pipe causes a differential in pressurebetween the brake pipe and auxiliary res-ervoir pressures, and as soon as the dif-ference in pressure becomes sufficientlygreat to overcome the resistance of theequalizing piston and slide valve to move- tem must be charged, and when com-pressed air enters the brake pipe, it isfree to flow into the branch pipe leadingto the universal valve and to the upperside of the equalizing piston, forcing theequalizing piston and its attached valvesto the position shown in release andcharging. As these valves are now beingoperated with the graduated release cap indirect release position, instead of gradu- AUXlLlARY BBAKE LARGE EMERGENCY SERVICE RESERVOIR—-PIPE \ RESERV0IR___—RESERVOIR BRAKE SMALL EMERGENCY CYLINDER / RESERVOIR. BRAKE CYLINDER-EXHAUST : v.\lve in service position. The two views of the valve in serviceand in charging application position arediagramnatic, the actual construction ofthe valve having been shown last month. It will of course be understood that thevalve is operating under the same condi-tions as ordinary types of triple valves, abrake pipe reduction produces an applica-tion of the brake and an increase of pres-sure in the brake pipe releases the brake,provided, of course, that the proper dif-ferential in pressure necessary to securemovement is obtained in each case. Withthe brake system charged, a brake pipe re- ment, the valve will move to applicationposition and if the brake is in an opera-tive condition it will apply. A release isthen accomplished by increasing the brakepipe pressure at a sufficiently fast rate tobuild it up enough higher than the pres-sure in the auxil
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
