The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 405
ultant can be counteracted by a singlestay wire in the opposite direction, p r, which may be calculatedas for a terminal pole on which the wires pull with a stress equalto, and in the direction of, p r. An even better method ofcounteracting the pull on the pole when the angle is nearly a 376… … Fig. 372.—Diagram of Stresses on Angle Pole sultant, p r, will divide the angle, b p a, into two halves, andcalculation will be easy, as all the sides will be equal, and right-angled triangles can be formed by drawing the other diagonalfrom s to s CHAPTER XXV UNDERGROUND WORK The invention and…
Telephone
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
