In mints, they call a coin-operated flyer or coin-operated steering wheel to coin the coin.
It is composed of a spindle, two arms and two flat balls at the end of them, a piece called a ring that joins by means of a notch called the slot, the spindle and the upper box in which the top or top wedge; of a few branches for the worker to throw; of some tables by which the upper box rises and falls and also has a lace or groove where they are mingled with the body of the wheel and a stump where the coin mined.
In Spain, they also call it a rocker.
The Castilian Dictionary, 1788
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