Draining mine workings by means of a battery of three pumps. The axle, B, is powered by an overshot water wheel. The cams on the axle raise and lower the piston rods by means of tappets. C is the bottom of the pipe which is encased in the basket, D. From De re metallica, by Agricola, pseudonym of Ge
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Image Number: 1746-1921Rights ManagedCredit Line:Image Asset Management/World History Archive/SuperStockCollection:Image Asset Management Model Release:NoProperty Release:NoResolution:3500×5877