A descriptive and historical account of hydraulic and other machines for raising water (1842)
Ewbank, Thomas · Tilt & Bogue · leaf 489
Leopold ’ . i Engine . Chap . 9 . ] 469 Leopold , to whom we have frequently referred , reflecting on Papin ’ s experiments , suggested the following application of steam to move pistons and to raise water : — … No . 197 . Leopold ’ s High Pressure Engine . A . D . 1720 . Two steam cylinders , open at top and provided with pistons a b , were placed over the boiler c , from the upper part of which a four - way cock d admitted steam alternately into the bottom of each . The pistons were connected by…
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