Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 105
achina Pupperheimana, fig-ured as a pump in Leupolds Theatrum Machinarum, published in 1727. Thus it appearsthat neither the American nor the British invention can claim the merit of originality. 88 PAEIS UNIVERSAL EXPOSITION. length of the cylinder in the direction of the axis. Each pair ofpistons… … ^ 0.30™ though they may come into contact. Each pair of pistons has itsindependent shaft, and externally to the cylinder each of these shaftscarries an elliptical gear-wheel, which works into an equal and similarwheel upon a shaft parallel to the piston shaft. This second shaft, which Fig. 17.
Machinery · Scientific apparatus and instruments
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