Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 325
ocal impulses for operatingthe printer sixth pulse magnet and the transmitter operating magnet are sent from positivebattery connected to two segments on the inside ring immediately following the selectingthrough the brushes to the printer operating magnet segment and transmitter operatingmagnet… … TIE UP LAMP TIE UP LAMP CIRCUITSHOWN IN POTTEPLINES USEP ONLYON SCHOOL TABLES. Fig. 4 4. If the auto control is operated the selection is set up in exactly the same wayexcept that the battery connected to the distributor sending segments is determined bythe auto control as already described in…
Telegraph
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