Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 168
593. DOUBLE BEAT DISC VALVE.—The central 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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