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 377
A by the armature; an ar-mature wound to develop1000 volts requiring abetter degree of insula-tion than one wound foronly 125 volts. Smoothcore armature bodies areused in some small ma-chines and arc generallywound with several layersof linen or silk, thenshellaced and baked inan oven to drive out… … ^WASHER Fig. 340.—Sectional View of a Commutator. moisture. The armature discs are holted between end flanges, the circumference of which are slotted for the reception of small fibre wedges, which serve as guides for the coils to be wound upon the core, Fig. 342. The insulation is pierced and the…
Electricity · Magnetism
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