Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 164
Fig. 15 LOCK NUT CENTERING PAWL,LOCKING CAM … CEN TERING SPRIMLOCK NUT- STHIKER. SHAFT SPRING INPEX ARM CENTERING PAWLSSPRING GEAR SHAFT CENTERING. CAN-LOCKING PAWL LEVER CENTERINGSPRING LEVER. Fig. 16 26. The index arm is normally locked in its vertical position by means of the lockingcam and the locking pawls. The locking cam is fitted on…
Telegraph
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