Twentieth century handbook for steam engineers and electricians, with questions and answers; a practical nontechnical treatise on the care and management of steam engines, boilers and electric machinery (1922)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1031
cending, 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 pressure… … 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 99t the other side^ 780 pounds. If the car is running downand the water is discharging into the…
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-321-196.webp)
