Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 365
Fig. 225. spindle in two parts. Upon its surface are fastened twobrass plates connected by wires with the two ends of the 10 CONTACT BREAKER … Fig. 226. spindle, and against them press brass springs, which, by bind- Chap. VI.] Current Induction, 347 ing-screws, are connected with the battery. The two up-rights in which the spindle works are insulated from eachother, but connected with the contact breaker. The Contact Breaker.—This in…
Electricity
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