A history of the growth of the steam-engine (1878)
Thurston, Robert Henry, 1839-1903 · New York, D. Appleton · leaf 354
y goodbuilders, is shown in section in Fig. 101. A comparison with the Watt engine of a century earlierwill at once enable any one to appreciate the extent towhich changes may be made in perfecting a machine, even STATIONARY ENGINES. 329 after it has become complete, so far as supplying it withall… … Fio. 101.—Comish Pomping-Engine, 1878. Section. and raising the pump-rod, M At an early period in thestroke the admission of steam is checked by the suddenclosing of the induction-valve at M, and the stroke is com-pleted under the action of expanding steam assisted by theinertia of the heavy parts…
Steam-engines
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