Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 63
st ofits kind in the world, and Fig. 57 isa simple diagrammatic section showingits principle of operation. The lift-lockconsists of two immense hydraulic ele-vators, supporting on their pistons Pjand p2i tanks A and B in which floatthe vessels to be raised or lowered. Thepresses are connected by a… … Fig. 57.—Principle of the lift lock. 56 PRESSURE OF LIQUIDS from the canal are closed. Then water, to the depth of a few inches, Isput into tlie upper tank and the valve li is oi)ened. The additionalweight in the upper tank forces the water from its press into the other,and it gradually descends…
Physics
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