Strike with the lever

The monetary press with vapor was invented by the English Matthew Boulton and James Watt at the end of the 18th century. This process made it possible to the brothers Monneron to manufacture a great quantity of token coinages out of bronze, the will monnerons . The process is adopted by the Currency of London in 1805. Its output is of 50 coins at the minute. The German Dietrich Uhlhorn in 1817 and the French Thonnelier in 1833 (monetary cf test of 5 francs opposite) designed a lever press running on the vapor, whose output was of 100 parts at the minute.

Currently, the lever presses function with electricity and are much more powerful (800 parts per minute for the press of the factory of Pessac in France). The 6 principal operations are automated quasi-intégralement:

cast iron and casting (out of blades and ingots)
Laminage
cutting of the blanks in a metal reel by a cutter
cordonnage
reheats in furnaces to malleablize the blank
shining
checking of the blanks by a camera then striking

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