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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 166

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 166
593. DOUBLE BEAT DISC VALVE.—Thecentral seat is borne by the cross bar in whichthe guide pin of the valve is set HYDRAULIC POWER AND DEVICES. 159 … 594. HYDRAULIC VALVE, used onelevators. Cylindrical in form, the valvesmove across the ports by a rock shaft andarms. A, pressure chamber. B, C, to elevatorcylinder.

Mechanical movements

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