Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 171
on of operations is the same except that when the selector drumhas nearly completed its travel the selected function contact will close andconnect battery through one winding of the cut-out relay to the correspond-ing function magnet. The operation of the cut-out relay will open the cir-cuit from… … Fig. 24 48. The operations performed by the relays employed in the printer may be sum-marized as follows: (a) Sixth Pulse Relay. The front contact of this relay is connected to batterythrough the main breaks. To its tongue are connected the drum magnet,reset contacts and the tongues of the fourth…
Telegraph
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