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The practical telephone handbook and guide to the telephonic exchange (1906)

Poole, Joseph · New York, Macmillan Co. · leaf 117

An illustration from The practical telephone handbook and guide to the telephonic exchange, 1906, leaf 117 — axis free, and so open theshort circuit of thearmature. The cut-out shownin Fig. 84 was intro-duced by the WesternElectric Co. It hasgiven much satisfac-tion, and is, perhaps, the type most frequently used. Thedriving shaft a runs in bearings cast on the ends of thearmature box. e is a toothed… … Fig. 83

Telephone

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