A descriptive and historical account of hydraulic and other machines for raising water (1842)
Ewbank, Thomas · Tilt & Bogue · leaf 446
cke ' s Illustration of Atmospheric Pressure . [ Book IV . may be thought of engines made previous to the 17th Century , those of modern days were obviously derived from atmospheric ones of the first dass , while these in their turn were very likely deduced from the appa - ratus described in the… … twenty men were employed to pull No . 191 . Guerricke . A . D . 1654 . at the rope with all their strength ; but as soon as a vacuum was made by the small air - pump attached to the bottom of the cylinder , the piston descended , notwithstanding all their efforts to prevent it . This is the oldest…
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