Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 376
Laminated Armature Core. The thickness of the discs is magnified to show theeddy currents. would result. A simple method ofconstruction is illustrated in Figs. 338, 339, etc. A brass oriron hub of the shape shown in the sectional view, Fig. 338,drilled to receive the armature shaft, is insulated… … Fig. 337.—Commutator for a Direct Current Dynamo or Motor. and formed collar made of sheet mica, when it is ready forthe reception of the bars which are forged with grooves inthe ends, as in Fig. 339. The projecting insulated tongue onthe hub fits into a correspondinggroove in a bar, and when all…
Electricity · Magnetism
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