. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . isusually adjusted for 70 pounds brake-pipe pressure. Supposespring 19 to be compressed so as to exert a force equivalent to a70-pound air pressure on the opposite side of the diaphragm. Then,as long as the air pressure in the brake pipe and chamber L is lessthan 70 pounds, the spring holds the diaphragm over as far to the AIR BRAKES 49 left as possible, as shown in Fig. 35. This holds the regulatingvalve ^;^ off its seat, thus opening port K, which permits a
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . isusually adjusted for 70 pounds brake-pipe pressure. Supposespring 19 to be compressed so as to exert a force equivalent to a70-pound air pressure on the opposite side of the diaphragm. Then,as long as the air pressure in the brake pipe and chamber L is lessthan 70 pounds, the spring holds the diaphragm over as far to the AIR BRAKES 49 left as possible, as shown in Fig. 35. This holds the regulatingvalve ^;^ off its seat, thus opening port K, which permits air toflow through port K and from passage // to chamber G at the backof the supply piston 6. Consequently, as long as the air pressurein G, h, e, and d is less than 70 pounds, the higher main-reservoirpressure on the opposite side of piston 6 forces it to the extremeleft, compressing spring 9 and opening port c, as shown in Fig. , therefore, continues to flow from the main reservoir througha, c, and d to the brake pipe, increasing its pressure and the pressurein chamber L, acting on diaphragm 17y until it reaches 70 Suj ppji/p Delivery sAit p Q d^OQ^ WWUUU
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidairbrakesuptodat00ludy
