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 375
015 inch, so that a great many separate pieces are required for a single armature core.333. The Commutator and Brushes.—A commutator consists of a number of bars or segments of drop-forged, hard drawn copper, assem-bled around an iron hub and thoroughly insulated from the hub and from each other,… … 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…
Electricity · Magnetism
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