A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 161
topreponderate, the pistons standing, as shown, at the top oftheir respective steam-cylinders. The engine being freed from all air by opening all the 136 THE DEVELOPMENT OF THE MODERN STEAM-ENGINE. valves and permitting the steam to drive it through the en-gine and out of the condenser through the… … Fia. 37.—Hornblowers Compound Engine, 1781. of that piston causes it to descend, carrying that end of thebeam with it, and raising the opposite end with the pump-rods and their attachments. At the same time, the steamfrom the lower end of the small high-pressure cylinder beinglet into the upper end…
Steam-engines
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