American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 657
EGRAPHY. grip on the wire can be obtained with the use of but one hand. The operation is2>imple; the wire w is placed between the cam c and the flange r. The strap is at-t iched at s and the pull on the strap tightens the hold of the cam on the wire. Thewire is released by depressing the lever… … IKON WIRK FIG. 410 a. placed in the groove of theinsulator. The tie wire, apiece of iron abouc 16 inchesin length, is wound aroundthe line wire close to theglass. The other end of thewire is passed around theinsulator and back to and al-so twisted around the linewire. The pull on the wireis such as…
Telegraph
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