A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 219
heights, the contrivance just noticedis not to be recommended. 114. The Lifting-pump, as repre-sented in the margin, acts in muchthe same manner as the preceding,but the machinery is reversed. Itconsists of a hollow cylinder or barrelA B, in which is fixed the valve G, alittle below the level of… … FORCING-PUMP. 217 which it is movea vertically by means of the frame BCDE, con-nected with the piston-rod I. Now when the piston is at the bot-tom of the barrel, the pressure of the atmosphere on the surfaceof the wTater in the well will open the piston valve; and the wa-ter will rise to the same…
Physics
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