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Scientific American, Vol. 42, No. 20 (May 1880) (1880)

leaf 7

An illustration from Scientific American, Vol. 42, No. 20 (May 1880), 1880, leaf 7
tightening 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… … DE GROAT'S ROTARY EXOIITE. © 1880 SCIENTIFIC AMERICAN, INC

Patented · Iron · Improved · Dynamometer · Patents · Scientific American · Feet · Twenty years · Total energy · Low water · Wood working · Heat capacity · Union telegraph · Edison dynamometer · Feet long · Total efficiency

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