Questions and answers on pumps and pumping machinery (1912)
Wakeman, William Henry, 1855- [from old catalog] · Chicago, The Joseph G. Branch publishing company · leaf 44
. If all parts are in perfect alignment the pres-sure acting on a horizontal piston will keep it frombearing downward. 133. Q. As force is not always applied in straightlines in these pumps, is there not much friction causedby this feature alone? A. Some friction may be due to this feature, but… … 34 QUESTIONS AND ANSWERS ON A. No. Either will create a nearly perfectvacuum, and that in connection with the density of theatmosphere, determines the height to which water canbe lifted. 135. Q. What conditions are necessary in orderto demonstrate this point? A. Both pumps must be in good working…
Pumping machinery
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