Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 229
utator (a, k) and a pair of slip-rings {e,f; I, m)forming respectively the primary and secondary terminals,at each end; a separate brush bearing on the correspondingcommutator is provided for each primary and secondarycoil or segment wound upon the ring. A pulley Pis shownfor rotating the spindle,… … Pirate IV.—Mains inductorium, with stationary ring. 1887. Van Depoele in Plate II. This machine is intended onlyfor direct currents, and is, of course, completely reversible ;we see in it a somewhat nearer approach to the dynamotortype. In 1887 a patent was issued to Main,^ which shows a de-vice…
Science · Technology · Meteorology · Patents
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