. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Fig. 76. E-G Safoty ValveCourtrsi/ of Westinf/hotise A ir BrakeCompany, Wihncrdiny, Pennsylvania AIR BRAKES 95 struction and operation is clearly shown in Fig. 7G, which is a verticalsection of the valve. Its construction is such as to cause it to closequickly with a x>op action, which insures a firm seating. Valve 4 i^held to its seat by the compression of spring 6. When the pressure. Fig. 77. Hose Protecting Coupling, Showing Flexible HeadCourtesjj of We
. Air brakes, an up-to-date treatise on the Westinghouse air brake as designed for passenger and freight service and for electric cars . Fig. 76. E-G Safoty ValveCourtrsi/ of Westinf/hotise A ir BrakeCompany, Wihncrdiny, Pennsylvania AIR BRAKES 95 struction and operation is clearly shown in Fig. 7G, which is a verticalsection of the valve. Its construction is such as to cause it to closequickly with a x>op action, which insures a firm seating. Valve 4 i^held to its seat by the compression of spring 6. When the pressure. Fig. 77. Hose Protecting Coupling, Showing Flexible HeadCourtesjj of Westinghouse Air Brake Company, Wilmerding, Pennsylvania below valve .4 overcomes the spring pressure above, it rises untilvalve stem 5 is stopped by cap nut 3. The air in discharging passesaround valve 4 and out at ports in the body 2, one of which is the pressure drops, valve 4 moves downward slightly and partlycloses the discharge ports in the body2. Air then flows to the spring cham-ber and assists the spring in closingthe valve, thus assisting in the popaction referred to above. Two of the important brake-pipefittings are shown in Figs. 77 and 78,Fig. 77 showing the scheme used injoining the flexible hose between uncoupled, the hose shouldalways be attached to the dummycoupling to keep the hose from beinginjured by swinging and to preventcinders and dirt from getting into thebrake pipe. The hose should always be parted by hand and not i)ulledapart by the separation of the cars. Fig. 78 illustr
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Keywords: ., bo, bookcentury1900, bookdecade1910, bookidairbrakesuptodat00ludy
