Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 862
move, when, upon reaching its other position, it is again locked and thedetector bar lowered. This sequence of movement is necessary in order to be certain that ifa train were standing over a switch, the switch shall not be moved. The Westinghouse Pneumatic Interloclvu/ System is the application of… … Fig. 13.—The Westinghouse pneumatic interlocking system. the top of the machine, and which all incline to the left, are those used for operating theswitches. The vertical levei-s, which are placed just to the right of and below the switchhandles, are those which control the position of the signals.…
Mechanical engineering
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