Electric toy making for amateurs. This work treats on the making of electrical toys, electrical apparatus, motors, dynamos and instruments in general ... By T. O'Conor Sloane .. (1914)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, The N.W. Henley publishing co. · leaf 186
Itis screwed in the bushing, which should be shorterthan the base, until the insulated contact buttonat the bottom of the lamp makes firm contactwith the carbon element of cell No. 1. When theswitch spring is brought in contact with the button,the circuit will be completed through the lamp andthe… … Fig. 76. Outlining Construction of Simple Vibrating Dia-phragm Type of Electric Horn. soon become exhausted. If used properly, thebatteries will suffice for several hundred flashes. Electric Warning Signal. Electric warning signals are widely used on auto-mobiles and motor boats at the present…
Electric apparatus and appliances · Electric toys
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