Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 157
either case. Fix- 142 Electrical Section. [J. F. I., ing the centres of armatures Q and R (the same as fixing therigid connecting link between P and Q, of Fig. ii) wouldlock this three-link chain, so far as any motion of the centreof P, in space, would be concerned, and the armature Pwould then… … FiG. 13.—The Rowan electric drill with electro-magnetic clamp,ism by fixing one link. The extreme flexibility of theelectro-magnetic connection admits of many combinationsof the simple electro-magnetic pairs for producing rota-tion, translation or helical motion. Some Industrial Applications of…
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