Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 134
er to a height or to drive itwith force through a nozzle as, forexample, for spraying or for use inextinguishing fire. The construction is shown inFig. 94. A cylindrical barrel ABis joined to one end of a suction-pipe BC ,the other end of which isplaced in the water to be drawn.A solid piston is… … 126 PHYSICAL SCIENCE. At B and D are valves opening outward. Procure a glass model1 of a force pump,lower it into water and observe (a) theactions of the valves on (1) the down-stroke,Fig. 94, (2) the up-stroke, Fig. 95, (b) theaction of the water in the suction-pipe, barreland air chamber F. 1.…
Physics
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