Dynamo-electricity: its generation, application, transmission, storage and measurement (1884)
Prescott, George B. (George Bartlett), 1830-1894 · New York, D. Appleton · leaf 644
spaces on the ring between the coilsare formed with inwardly extended pole pieces, which embracethe greater part of the circumference of the armature. The coilsof the armature are wound in the form of rectangles, with theirlong sides parallel to the axis, the width of each coil being suchthat its… … 1^ 624 THE ELECTRIC LIGHT. ity is broken; and for producing continuous uniform currentsit is formed of spiral-shaped rings of insulated iron, wound rounda cj^linder of non-magnetic material. The currents are collectedby a cylindrical commutator, which, in order to diminish the wearand tear of the…
Electrical engineering
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