The standard electrical dictionary; a popular dictionary of words, terms, and phrases, used in the practice of electrical engineering (1897)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, H. W. Henley & co. · leaf 485
serves toprotect the cable from wear. Shackle. In telegraph lines a swinging insulator bracket for usewhere wires make an angle with the pole. A journal box isattached to the pole, like half of a gate hinge. To this a short ironarm is pivoted so as to be free to swing through a considerableangle.… … Fig- 303- Double Shackle. Shadow, Electric. A term applied to a phenomenon of highvacua. If an electric discharge is maintained in a Crookes tubethe glass opposite the negative electrode tends to phosphoresce. Aplate of aluminum, used also as the positive electrode, protects theglass directly…
Electricity
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