Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 170
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. … Wmrm 595. MULTIPJ.E BALL VALVE.—The cone-valve seat is in two parts ; the cover or cage is heldin place by the screw in the cap.
Mechanical movements
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