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 98
TION COIL. 97 Sparks may also be taken from the coil by bringingthe ends of two conductors from the secondary ter-minals sufficiently close. A very small coil, two orthree inches long, will give a one-eighth inch spark,and some of the large ones will give a spark severalfeet long, one which will… … Fig. 39. Circuit Breaker. coarse cut file. The teeth of the file might be atieighth of an inch apart, and as high as possible.Then the other wire from the battery was drawn 98 ELECTRIC TO T MAKING. across the file, and, as it jumped from tooth to toothyeffected the desired make and break. Another…
Electric apparatus and appliances · Electric toys
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