American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 618
will be seen, opens thecircuit at a second place, viz. .t, and it also reveals the words train order, as shownat the right of Fig. 381. The object of this latter arrangement is to assist the stationagent or operator in remembering that he holds a train order for a particular trainwhich it does by… … i ^^f ■ 1 TRAIN 1 4 # iSiiil ORDER u STEWART-HALL TRAIN ORDER SIGNAL. train order annunciator. In practice the annunciator boxes are marked westbound, south bound, etc. Train Signals. Many electrical devices have been tried to take the j^lace of the bell cord ontrains but the latter still, almost…
Telegraph
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