A descriptive and historical account of hydraulic and other machines for raising water (1850)
Ewbank, Thomas, 1792-1870 · New York, Bangs, Platt, & Co. · leaf 311
urface of the remainder forms a continuationof the case in front of the recess while the pistons are passing; and thenby a similar movement as that used in the figure described, the convexpart is brought in contact with the periphery of the drum till the pistonsreturn. All rotary pumps are both… … No. 132. No. 133. There is another class of pumps that bears some relationship to the pre-ceding—the eldest branch, we believe, of the same family. One of these isfigured in the 133rd illustration: the butment consists of a curved flap thatturns on a hinge ; it is so arranged as to be received into…
Pumping machinery
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