The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 593
Fig. 353. FlatSocket Bushing. Button, Ceiling. , iing. A perforated block of insulating material fastened to the ceiling and having a pendant cord passing throughit so that the pendant may hang from a difierent point than its ceil-ing rosette. … Fig. 354. Ceiling Button. Cable, Beaded. A cable devised to have a low electrostaticcapacity. Instead of rubber or gutta percha, the wires are incasedin a series of wooden beads and then placed in a leaden sheath. Cable, Emergency. A light cable of about half a mile in lengthused to temporarily…
Electricity
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