Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 215
less thana cylinderful, and the difference, whatever it may prove to be,is called, and is due to slippage. Fig. 190 represents the same pump running at a compara-tively low speed. It will be noticed that the valves have notbeen raised as high as in Fig. 191, because a longer time beingallow^ed for… … Fig. 1J2. seat, and consequently a vacuum can be created in the cylinderearlier in the stroke, and a larger volume of water can there-fore be drawn in during the return stroke. In the latter case it is evident that the volumeof water drawn into thecylinder will be nearlyequal to a cylinderful…
Hydraulic machinery · Pumping machinery
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