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 26
method is to apply the stroking from MAGNETIZING HORSESHOE BARS. 25 centre to ends with two magnets simultaneously. Alittle bit of wood or brass should be used to preventtheir ends from coming in contact in the centre ofthe magnet. The cut shows the arrangement, Irepresenting the separating piece,… … Fig. 5. Magnetizing a Horseshoe Magnet. Magnets are generally either straight or horseshoein shape. If of the latter description they may bemagnetized by touching both poles to opposite polesof a dynamo field magnet. It should be noted thatthis will reduce for the moment the power of thedynamo.…
Electric apparatus and appliances · Electric toys
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