A descriptive and historical account of hydraulic and other machines for raising water (1850)
Ewbank, Thomas, 1792-1870 · New York, Bangs, Platt, & Co. · leaf 70
hese animals conveyed to that depth in this tremendouspit, and by what means do they ascend ] It is the solution of this prob-lem that renders Josephs well so peculiarly interesting, and which indi-cates an advanced state of the arts, at the period of its construction. A spiral passage-wray is cut… … ^ -> ^v: asses or mules. It is six feet four in-ches wide, and seven feet two incheshigh. Between it and the interior ofthe well, a wall of rock is left, to pre-vent persons falling into, or even look-ing down it, (which in some cases wouldbe equally fatal,) except through certainopenings or…
Pumping machinery
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