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 99
COIL. Sparks may also be taken from the coil by bringing the ends of two conductors from the secondary ter- minals sufficiently close. A very small coil, two or three inches long, will give a one-eighth inch spark, and some of the large ones will give a spark several feet long, one which will… … Fig. 39. Circuit Breaker. coarse cut file. The teeth of the file might be ati eighth of an inch apart, and as high as possible. Then the other wire from the battery was drawn
Electric apparatus and appliances · Electric toys
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
