Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 161
a diaphragm and draws the valveto its seat. Adjustment for difference of pressureis made by compressing or releasing the springpressure under the elastic diaphragm, by the screwand nut at the bottom. 563. PUMP WATER PRESSUREREGULATING VALVE.—A balancedpiston valve, with a differential balance… … 564. HYDRAULIC PRESS, with screwadjustment of upper platen. The closingdown of the upper platen is quickly done bythe screw, when a small movement of the hy-draulic piston is required for the pressure.
Mechanical movements
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