A descriptive and historical account of hydraulic and other machines for raising water (1850)
Ewbank, Thomas, 1792-1870 · New York, Bangs, Platt, & Co. · leaf 286
, its defects ; for in elevating the piston the whole weight of theatmosphere above it has to be overcome, a disadvantage that in large ma-chines would not be compensated by the saving of a valve. As the pistonhas to pass the holes in the upper part of the cylinder, its packing wouldbe injured if… … Chap. 3.] Common Forcing Pump. 263
Pumping machinery
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