American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 648
DEAD-MAN. CANT HOOK. POST AUGER. means of which it is raised to a vertical position, when it slips down into the hole.The cant-hook is again used to turn the pole in the hole, so that the • gains, ornotches, which have been cut in its side for the cross-arms, will be at right angles tothe wires, as…
Telegraph
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