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 158
the cores of theelectromagnet are formed of 5-16-inch flat-head wood SOUNDER. 157 screws about 2% inches long. The heads of themagnet coils are made of %-ihch sheet fiber 1 inch indiameter. The two upper heads should have clear-ance holes in them, which will allow the screws topass through freely,… … Fig. 66. Sounder, with Detail of Magnet. the screws and at the same relative distance fromthe head. The body of the screws should be woundwith a layer of paper shellacked, after which ten lay-ers of No. 2i single cotton-covered magnet wireshould be wound on each screw. The best way to dothis…
Electric apparatus and appliances · Electric toys
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