A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 84
eived an interest in the new engine. THE MODERN TYPE. 59 fall, and, by the greater weight acting through the beam, i i,to raise the piston, s, to the position shown. The rod m car-ries a counterbalance, if needed. The cock d being shut, fis then opened, and a jet of water from the reservoir, g,… … Fig. 19.—Newcomens Engine, A. d. 1705. The pipe h is used for the purpose of keeping the upperside of the piston covered vdth water, to prevent air-leaks—a device of ^ewcomen. Two gauge-cocks, c c, and a safety-valve, iVJ are represented in ti^gure, but it will be noticedthat the latter is…
Steam-engines
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