| This wheel is an overshot wheel. This means that the water flowing away acts as a brake because it is moving in the opposite direction to the wheel.
The water comes from the same pentrough as the Tilt Wheel, through a pipe which carries it over the wheel.
The blowing engine cams are fixed on the wheel axle inside the forge.
 
As the axle turns, the cams push a piston up and down. This piston blows air into the forge hearth.
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