American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 553
ension at its lowerend loosely aoainst lever a. 442 AMERICAN TELEGRAPHY. A pin / projects from one side of r, virtually as indicated. When the arma-liire lever a is attracted, all the circuits being closed, this pin projects a short distanceabove the flat spring fs, as in figure. The lever h… … C>A\\VVV>A\VVVVVVVVVAAAWVVV\,VV\WVV\\VVVW5; GAMEWELL AUTOMATIC REPEATER, TH fSORV. It may be seen that the main circuit in Fig. 329, after passing through the relay,passes to the flat strip fs, thence to another flat strip fs which rests against fs, andthence out to the line again, as…
Telegraph
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