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 294
arecombined as ;. ;vo. 130, a contrivance oi Mr. Treve-diick. 7he cylir.der of a forcing pump commun-cate?villi that of ar. atrnospheric one ; both ])iston rods areconnected to a cross-bar and rise and fall together. V^^herithe pistons are Iais-;.! the water above that in the lonjj_ (or… … Chap. 5.] Rotary Puwjjs. 281 the pistons descend, the valve on tjie suction J^ipe closes, and the solic?piston drives the water in its cylinder through the hollow one in the other,so that whetlier rising or falling the li()uid continues to How. As bothcylinders are filled at the same time, the bore…
Pumping machinery
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