Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 253
LOCAL SEGMENTS DDDDDDDDgDDDDDDDDDDD PRINTERRELAY RECEIVING SEGMENTS mfflnRnpDDDDDDDDDDDDDQDDDDDDDDDpDD 500 MM rn 240* 500 ta 500 500 500 240 240 24CT SELECTING MAGNETS tc 240° TIE UPLAMP … 6f-h PULSERELAY 6+J? PULSE CONTACT CLOSER BY MECHAN-ICAL CUT-OUT WHEN SELECTION IS MAPE. ^,TOBELLCJCX41 SOLENOIP THIS CONTACT CLOSES WHENEVER THE UNIVERSAL BAR IS OPERATEP SPACINGCONTACT
Telegraph
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