Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 115
e The paintedparts of the pole are then covered witli a cloth which after being nailedto the pole, is also painted with tar. Finally a zinc plated sheet of ironpainted on both sides with tar, is placed around the cloth and tightenedto the pole. The sa\ing due to the use of sterilized poles is 40… … Figs. 930 to 9.32.—Pole line construction tools. Fig. 930, split wooden handle post hole auger;fig. 931, cant hook; fig. 932. socket peavey. Methods of Setting Wooden Poles in Unsuitable Soil.— In places where salt is plentiful and cheap, such as the Great SaltLake region in Utah, it has been found…
Electrical engineering
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