A descriptive and historical account of hydraulic and other machines for raising water, ancient and modern : with observations on various subjects connected with the mechanic arts: including the progressive development of the steam engine (1876)
Ewbank, Thomas, 1792-1870 · New York : Scribner, Armstrong · leaf 301
e of the remainder forms a continuationof the case in front of the recess while the pistons arc passing; aiic .hei.by 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 l)oth… … No. 132. No. 133. There is another class of pumps thit bears son>e relationship to the pre-v-f. ling—the eldest brai>ch, we believe, of the same family. One of these isfie tired in the 133rd illustration: the butment consists of a curved flap thattJi ns on a hinge ; it is so arranged as to be…
Pumping machinery
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