The standard electrical dictionary; a popular dictionary of words, terms, and phrases, used in the practice of electrical engineering (1897)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · New York, H. W. Henley & co. · leaf 17
traction. 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 polo, and the railcompleting the circuit… … Fig. 3. Electro-magneticCar Wheel.
Electricity
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