Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 235
(1887). The upper figure, from a Van Depoele^ patent of 1889,shows a double secondary armature // adapted to producetwo-phase currents. ^ No. 367,469, of Aug. 2, 18E No. 417,654, of Dec. 17, \i 224 Colles LJ- F. I.. The figures of Plate VIII are from two patents issued toHenry ^^ in 1894. The two… … PivATE VIII.—Henrys motor-generators. 1894. there is no inherent difficulty as to regulation ; for eachmachine may be separately compounded, the one to yield aconstant speed at constant pressure, the other vice versa, inthe same way as if they were wholly independent. It is Nos. 512,820 of Jan. 16,…
Science · Technology · Meteorology · Patents
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