Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 62
operator,the valve takes the position shown at D, and thecage is forced up by the pressure on P of the waterwhich rushes into C from the mains. When thecord is pulled down, the valve takes the positionshown at F (l)elo\v), and the cage descends by itsown weight forcing the water out of C into… … Fio, 55.—Hydraulicelevator. CANAL LIFT-LOCK 55 60. Canal Lift-Lock. The hydraulic lift-lock, designed to takethe place of ordinary locks where a great difference of level is found
Physics
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