Throwing shovel

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As throwing vane or Dutch a is Wasserhebemaschine designates which earlier for the drainage of building pits was used.

The Dutch woman consists of a shovel that swings on a three-legged frame and is swung back and forth by people through poles and pull cords. The water absorbed every time in the lowest position is thrown upwards by the momentum given to it.

The swing blade has a similar effect , but moves in a channel .