Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 648
he figure are shown two passages connecting thecylinder with the steam-ports at each end, in addition to the port-openings proper. These are very small passages communicatingwith the steam-ports, and their function is to start the piston onthe return stroke, when the steam-port proper is covered by… … of their valve-gear external are more numerous than the preceding class, and illustrations of severalvarieties are appended. The Wortldnyton Duplex Pump.—Fig. 8550 represents the Worthington duplex pump. Two G18 PUMPS, STEAM. steam-pumps are placed side by side, and so combined as to act…
Mechanical engineering -- Dictionaries
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