Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 130
must be operated. This unit is located in such a position thatan extension of the armature of the shift magnet can engage the typewheel carrier andraise or lower it as determined by the operation of this shift magnet. When the magnetis energized the fibre insulating block on the armature closes the… … NOTE; INKER LEVERNOT SHOWN SHIFT UNIT ARMATURE / Fig. 13 48. For signalling purposes a bell is provided on the printer, which is operated when-ever the characters representing Figures J and Letters are successively sent to the printer.The bell and the relay which controls it are located in the…
Telegraph
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