The Machines

In this second figure is shown the method of beating gold, silver, copper, and other materials ores, and also for stamping medals, coins, or other things. Here, first, one sees the artisan with the crucible M or small forge it could be one or the other under the chimney L-K-H-G, working with a hammer upon the anvil T.

The chimney, made in the shape that is seen, sends the hot air of the fire and the smoke upward, and makes a flywheel I turn. From that motion, the pinions N-P-R move reciprocally, which, striking the wheels O-Q-F, make the screw-press A turn. In the center of the wheel F and the center D, another artisan V, with the metal rod E, can pull to the mark that the work desires, or else with the wedges B-C, stamp whatever one wishes, as is clear from the figure.

The Latin text provides an identical description of the metal-working machine, specifying the use of a chimney-driven turbine to power a stamping press for minting coins or medals.