A descriptive and historical account of hydraulic and other machines for raising water (1842)
Ewbank, Thomas · Tilt & Bogue · leaf 239
and others . A figure of it is inserted in Grregory ’ s Mechanics , Ja - mieson ’ s Dictionary , & c . No . 88 . Pump and Pistons from We have selected No . 88 , as a specimen Agricola . of a single pump , and of upper and lower boxes . A , A , represent two of the latter ; the upper part of one is… … scended by their own weight , > . Double Pump in German mines . A . D . 1618 . as will appear from an inspec - öon of the figure . The separate view of a rod is intended to show the application of cranks on the horizontal shaft , in place of cams and le -
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