A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 358
formerly considered exclu-sively applicable. The accompanying figure illustrates sucha pumping-engine, as built for supplying cities with water.This is a compound direct-acting pumping-engine. Thecylinders, A B, are placed in line, working one pump, F,and operating their own air-pumps, J)D, hy a… … condenser, C. The valves, NM, are moved by the valve-gear, X, which is actuated by the piston-rod of a similarpair of cylinders placed by the side of the first. These 334 THE STEAM-ENGINE OF TO-DAY. valves are balanced, and the balance-plates, Ji Q, are sus-pended from the rods, 0 P, which allow…
Steam-engines
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