The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 376
trigger, and attached to a stay rod and block buried near the foot of the pole, the stay rod being provided with a stay tightener to strain the stay as shown at b.The ground resistance to the pole should be strengthened by fixing stay blocks at right angles and on opposite sides of the pole, as… … -Pole Strut Fig- 341.— OVERHOUSE WORK Trussed Pole In good modern work in towns nearly all the wires are carried in underground cables ; but it is stillnecessary to run a number of wires overhead for the distribu-tion of the lines from the ends of the cables, which are usuallyterminated on what is…
Telephone
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