American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 659
eve, into which solder may be run if desired. FIG. 42 MCINTYRE SLEEVE JOINT. t PLIERS.—Since the general introduction of electric lighting, the use of pliers, withinsulated handles, in any kind of construction or repair work, is advocated as a pre-caution against accidents. In one style of… … anti-hum device.—In many places it is necessary, in order to retain possessionof right of way, to obviate the humming noise due to the vibration of tlie wires. Thiscan be accomplished by the use of a device known as the • anti-hum, which is shownin Fig. 423. FIG. 423.
Telegraph
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