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 847
Huel-goat engines, described by Weisbach. The average speed of the engine is 140 feet per minute, or 7double strokes per minute. This requires a velocity of something less than 2i feet per second of thewater in the pressure-pipes; and as all the valve apertures are large, the hydraulic resistances…
Mechanical engineering · Mechanics · Engineering
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