Specifications for the multiplex printing telegraph system : theory and operation (1920)
Western Union Telegraph Company · [New York?] : The Company · leaf 300
s to the C switch are openedand positive and negative line battery connected direct to alternate segments of thebalancingdistributor. A catch normally holds the friction wheel away from the fly-wheel; as soon as this catch is released the commutator is made to rotate, thus sendingalternating… … Fig. 12 30. If only two channels are required we remove the B channel table from the threechannel set, remove also the special balancing distributor and its associated F switch,change the face plate for a two channel face plate, and rearrange our strapping to com-pletely convert the set to a two…
Telegraph
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
