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Scientific American, Vol. 27, No. 3 (1872) (1872)
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tations of im. tical axis, which winds the portant parts of the ma wire spirally by forcing it int6 the thread of a nut chine, which will be re- ferred to below. contained in the lower end The first operation is the of the hollow cylinder, fastening it around the filling of the comb, A, with “Ne… … © 1872 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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