Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 228
- aGramme ring wound with the primary and secondary coils … Pl,ATE III.—Waterhouses inductorium, with stationary ring. 1883.placed in juxta- or superposition, and each connected to aseparate commutator as in the dynamotor type. This isfirst shown in a patent to Waterhouse/ of 1883 (Plate III). No. 271,169, January 23, 1883. 2l8 Colles: [J. F. I.. The only…
Science · Technology · Meteorology · Patents
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