An engraving from De Re Metallica by Georg Agricola shows a piston pump for extracting water from mines. Crankshafts and connecting rods lie alongside. Agricola, a physician, worked in Joachimsthal, and his book became the standard work on mining for over 200 years.
An engraving from De Re Metallica by Georg Agricola shows a piston pump for extracting water from mines. Crankshafts and connecting rods lie alongside. Agricola, a physician, worked in Joachimsthal, and his book became the standard work on mining for over 200 years.