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Scientific American, Vol. 42, No. 20 (1880) (1880)
leaf 7
ightening the set screw. tern is thereby improved and the penetration increased. wrist pin, the.pitman. being prevented from slipping off by This useful invention was recently patented by Messrs. J. Further information may be obtained by addressing Mr. a flange on the inner sides of the box… … © 1880 SCIENTIFIC AMERICAN, INCInternet Archive · Public domain (published before 1931). Free to use for anything.
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