Electric transmission of energy and its transformation, subdivision, and distribution. A practical handbook (1894)
Kapp, Gisbert, 1852-1922 · New York, Van Nostrand · leaf 423
100 horse-powerCrompton motor, largely used for mining work. Thefield consists of two horse-shoe magnets producing four 404 ELECTRIC TRANSMISSION OF ENERGY. poles, and the armature is a four-pole series-wound drum,two sets of brushes only being required. The armaturecore is 24 in. diameter, and… … the armature is supported on the central hub, which iskeyed to the spindle, as shown. The discs are insulatedfrom each other, and the armature-bars, which consist ofstranded and compressed rectangular cable, are held inplace by a large number of fibre driving-horns, sunk intothe surface of the…
Electric power production
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