Spiral Pump (from Internet Glossary of Pumps)
Spiral Pump
This pump is easy to construct, and can raise water to almost half the diameter of the wheel.

In its ancient form, a spiral channel is sandwiched between two circular plates, as shown on the right in a cutaway view where the front plate has been removed.

Another way to make a spiral pump is to use a piece of tubing in a spiral shape, attached to a single wheel.

(This is a still representation and possibly also a low-resolution image of a fully animated pump.)

Go to web page describing Statistics Explained

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Last modified February, 2002
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