Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 628
loss by eitherfitting projecting flanges to the pole pieces or by using internalmagnets, or else by flattening the ring into a disk form, so as toreduce the interior parts of the ring coils into an insignificantamount. This is done in the Gulcher machine. The commu-tator is of the Gramme type,… … i ^ 608 THE ELECTRIC LIGHT. brushes of great widtli, and bj this construction more perfectelectrical contact is insured, and the sparking reduced. Themagnet coils are wound with a double strand of copper wire,consisting of two thick wires twisted together ; this arrangementbeing adopted for…
Electrical engineering
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