Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . <^linder Be^crvoir* Fig. 94. Section of Air Operating Valve 195 100 ELECTRIC RAILWAYS a bolt G actuated bj a spring. As the handle is turned, the headof the bolt 6 passes over notches which serve to indicate when thevalve is in the proper position. Connected to the lower side of thesoc
Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. . <^linder Be^crvoir* Fig. 94. Section of Air Operating Valve 195 100 ELECTRIC RAILWAYS a bolt G actuated bj a spring. As the handle is turned, the headof the bolt 6 passes over notches which serve to indicate when thevalve is in the proper position. Connected to the lower side of thesocket is the stem 7, having a pinion fitted to its lower end, whichactuates the rack 8. The rack 8 is connected to and operates theslide valve 9. The spring plate 10 does not act as a stop for the slidevalve 9, but is used only to assist in getting the valve in the properposition when assembling the parts. The slide valve 9 moves be-tween suitable guides 11 and 12. The chamber A is always incommunication with the reservoir, and a port leads to the gaugeabove, which indicates the pressure. In the figure, the valve isshown in release position; air passes from the cylinder through the Top View PressureOauqc; Valve 5eat. Fig. 95. Top View and Section of Valve Showing Pressure Gauge pipe B, the port C, the cavity D, the port E, and thence to the ex-haust pipe. When the valve is in emergency position, the right-hand edge of the slide valve 9 registers with the left-hand edge ofthe port C. Air then passes from the chamber A, through the portsC and F, through the pipe B, to the brake cylinder. In this position,the port E is blocked. In lap position, the right-hand portion of theslide valve 9 covers the ports C and F, and the port E is port G connects the brake-cylinder pipe with the gauge above,which indicates the cylinder pressure. Another form of this operating valve is sometimes used whichhas no gauge at the top to indicate the cylinder and reservoir pres-sures, but the op
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Keywords: ., bookauthoramericantechnicalsoci, bookcentury1900, bookdecade1910
