Carpenter, William Benjamin, 1813-1885, Dallinger, W. H. (William Henry), 1842-1909 · Philadelphia, Blakiston · leaf 458
3oS) is a hand machine. The specimen is cementedto the carrier, O, which is movable on tlie axis, h, and can also berotated in two directions. The object is pressed by the weight,*?,against the steel disc, which is revolved by the wheel, r, acting mia smaller toothed wheel on the axis of d. The… … Fhi. 359.—Treadle machine for cutting hard sections. is part of the cover for the disc, to prevent the emery flying about.A box beneath also catches the powder that falls. (This arrangement is also supplied with tig. .>~<S, though not shownin the woodcut.) A second wheel at /, with a cord…
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