The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 17
ction. It has beenapplied to the driving-wheels of an engine and rail, whose grip isincreased by such action. In one method a deep groove was cutaround the wheel which was wound with a magnetizing coil. Thusone rim becomes a north and the other a south pole, and the railcompleting the circuit acts… … ^^^ Fig. 3. Electro-magketicCar Wheel.
Electricity
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