Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 23
RECEIVINGPISTRIBUTOR BRUSH INSULATOR ■t 2f 3t 4t. rf KEYS GENERATOR … SELECTING MAGNETS Fig. 12 the two arms are not only rotating at the same number of revolutions per minute, butthey hold the same relative position at all times, so that if the sending brush is in contactwith the sending segment 1 the receiving brush is in contact with receiving segment 1,and so on.…
Telegraph
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