A descriptive and historical account of hydraulic and other machines for raising water (1842)
Ewbank, Thomas · Tilt & Bogue · leaf 478
you as much water for eight - pence , as will cost you a Shilling to raise the like with your old engines . ” The original figures in the Miner ’ s Friend were inserted in Harris ’ s Lexieon Technicum , in 1704 , and copied int o Switzer ’ s Hydro - statics in 1729 , and by Desaguliers in his… … No . 195 . Savery ’ s Double Engine . A . D . 1702 . A detailed description of this elegant apparatus is not necessary , since its Operation will be understood from the explanation of the two preceding machines . It is substantially the same as No . 193 , except that this one has two boilers ,…
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