Henderson, C. Hanford (Charles Hanford), 1861-1941, Woodhull, John F. (John Francis), 1857-1941 · New York, D. Appleton and company · leaf 148
dby a nozzle. This offers resistance to the flow of the liquid,and as a result the air in the air chamber is compressed,and continues to force water out of the delivery tube dur-ing the next up-stroke of the piston rod. The next down-stroke again opens a and forces water into the air chamberand… … Fig. 79a.—Typical valves. monly horizontal, as shown in Fig. 79, and at each strokeof the piston water is drawn into one end of the piston10 130 PHYSICS chamber and forced out at the other end. In this way thestream of water is continuous. 144. Air Pumps.—The air pump serves a double purpose—to…
Physics
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