A dictionary of electrical words, terms and phrases (1898)
Houston, Edwin J. (Edwin James), 1847-1914 · New York, The W. J. Johnston company · leaf 424
Fig. 443. Double Shackles. A form of double shackle is shown in Fig-443. The wire passes around the recess at B>between the two insulators. On curves, or in any situation where there is aprobability, in case of the breaking of an insula- … Fig. 444. Hook Guard. tor, of a wire getting into a dangerous positionrguards should be employed. Guards are of two kinds, viz.: hoop guardsand hook guards. A form of hook guard isshown in Fig. 444. When wooden poles are employed various pre-servative methods are adopted to protect thewood from…
Electricity · Electrical engineering
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