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Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)

Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 305

An illustration from Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary, 1917, leaf 305
ned and closed by theswing of the valve on its centre.The valve is thrown by the shoul-ders on the piston, striking the valve arms. Sergeant model. 1201. ROCK DRILL, with balanced piston valve, which isthrown by compressed air inlet through ports opened by the recipro- ib: cal motion of the piston.…

Mechanical movements

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