Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 796
valves, is the larger opening for the passageof the water than is afforded by the v.alvcs of the forms hitherto in use, while at the same time the liftis reduced, and consequently the concussion very considerably lessened. VALVES, BALANCED—Stevens Improvements, 1851. Tlie patentees object ia a…
Mechanical engineering · Mechanics · Engineering
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