. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . AIR BRAKES 89. Zt Fig. 69. Simple Conductors Valve small, makes the release of the brake much slower than when theretaining \al\e is not used. When the pressure has been reduced to15 pounds, it is no longer able to hold the weighted \ alve 4 ^1 its seat and the valve then closes and theremaining 15 pounds is retained in thebrake cylinder until the handle 5 isturned down. When used on vesti-buled passenger cars, the valve is pro-vided with an extension handle
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . AIR BRAKES 89. Zt Fig. 69. Simple Conductors Valve small, makes the release of the brake much slower than when theretaining \al\e is not used. When the pressure has been reduced to15 pounds, it is no longer able to hold the weighted \ alve 4 ^1 its seat and the valve then closes and theremaining 15 pounds is retained in thebrake cylinder until the handle 5 isturned down. When used on vesti-buled passenger cars, the valve is pro-vided with an extension handle to per-mit of its being conveniently operatedfrom the platform. High and Loiv-Pressure Retain-ing Valve. Under extreme conditionsof heavily loaded trains on grades, itis often necessary to provide for retain-ing more than 15 pounds in the brakecylinder. The high- and low-pressure retaining valve, Fig. 67, isused for this purpose. This is similar to the valve just describedexcept that a cylindrical weight 10, surrounding the usual weightedvalve 4y is added. W^hen the handle 5 is turned down, air fromthe brake cylinder passes freely to the
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidairbrakesuptodat00ludy
