Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 208
738. ELECTRIC GAS LIGHTER.—Non-short-circuiting. The wiping spring is insu-lated, and there is no electric current except atthe instant of lighting. 739. POCKET ELECTRIC LIGHT.-A dry battery, with a smallincandescent lamp connected with it by a break-piece operated by the thumb. A small lens at the…
Mechanical movements
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