Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 153
d a spark at each break. The commutator is insulated from the shaft, and hasusually a ventilating space underneath. Its bars are 130 ELECTRICITY FOR EVERYBODY. insulated from each other, usually with mica, and aresecurely bound together by metal collars, insulated fromthem and fitted to beveled… … Fig. 59. pound wound, two terminals of the two coils in its field-magnet being shown on the left; the conductors connect-ing these coils with the brushes are shown in front, andone of the two binding-posts for connecting them withthe external circuit is shown in the rear; the other con- DYNAMOS.…
Electricity
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