Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise .. (1916)
Swingle, Calvin F. (Calvin Franklin), b. 1846 · Chicago, F.J. Drake & company · leaf 1031
ascending, the water enters through port, C, andpasses out through D, then on the descending trip thewater will enter through D and pass out through C. Ineither case, the water will have to pass through the open-ings, E, in the valve piston, this passage causing a cer-tain amount of loss in… … Fig. 417 passing through the piston holes, E, is 20 pounds; then,if the car is running up, and the pressure of the waterwhen it reaches one side of B is 800 pounds, it will be, on Hydraulic Elevators 997 the other side, 780 pounds. If the car is running downand the water is discharging into the…
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