Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 154
r the line and when the impulses are marking, the tongue of the relay will touchits marking contact and connect battery to the receiving brush. As the brush passesover the segments of the commutator it connects the selecting magnets of the printersuccessively to the tongue of the printer relay and… … Li [ II ea p REL LSE*Y. [ ] p *INT RELA (. 4.B PULSE RELAY. 6. Upon the operation of any of the selecting magnets its plunger is driven forward and disengages its trigger from a trip rod. Each plunger controls a trigger (Fig. 3). Page 2 Section 5-A Multiplex System 263-C TRIP rod-LEVER t SELECTING…
Telegraph
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