A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 362
tone foundation. The pump-rod, I, works adouble-acting pump, J, and the resistance to the issuingwater is rendered uniform by an air-chamber, JK^ withinwhich the water ri^es and falls when pressures tend to vary-greatly. A revolving shaft, iVJ driven from the fly-wheelshaft, carries cams, 0 P,… … FiG. Wl.—fiie Leavitt Pmnpiug-Engine. pump. Steam is carried at 60 or 80 poiinds^i-essure, andexpanded from 6 to 10 times. A later form of double-cylinder beam pumping-engineis that invented and designed by E. D. Leavitt, Jr., for theLynn (Mass.) Water-Works, and shown in Figs. 106 and 107.The two…
Steam-engines
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