A descriptive and historical account of hydraulic and other machines for raising water (1842)
Ewbank, Thomas · Tilt & Bogue · leaf 239
219 Pumps in German Mines . Chap . 6 . J cola , were similar to such as were used in some of the same mines by the ancients , and have always formed part of … 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 tapered to fit it into the lower end of the pump log as is yet sometimes done . D , B , an upper box ,…
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