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The barker's mill is a device that rotates as water is poured in at top and comes out in opposite directions at the bottom.

Barker's Mill

The barker's mill is a device that rotates as water is poured in at top and comes out in opposite directions…

"Water enters the wheel halfway up and flows against the slots on the wheel. The wheel rotates with the flow of the water and the stream continues out the bottom of the wheel." —Quackenbos 1859

Breast Wheel

"Water enters the wheel halfway up and flows against the slots on the wheel. The wheel rotates with…

Waterwheel.

Breast-Wheel

Waterwheel.

"Wheel consists of flaps in the shape of buckets that are equally spaced. As water flows onto the wheel, the weight of the water in the buckets causes the wheel to rotate and empty the buckets." —Quackenbos 1859

Overshot Wheel

"Wheel consists of flaps in the shape of buckets that are equally spaced. As water flows onto the wheel,…

"A waterwheel which the water enters and leaves at all points on its circumference." -Foster, 1921

Turbine Wheel

"A waterwheel which the water enters and leaves at all points on its circumference." -Foster, 1921

"Waterwheel where the lowest flat-board is submerged in the running water. The water is often given its power from a slight inclination. This wheel is also often powered by the running water issued by a dam." —Quackenbos 1859

Undershot Wheel

"Waterwheel where the lowest flat-board is submerged in the running water. The water is often given…

A gravity-type waterwheel, the most efficient wheel for very low heads and small quantities of water.

Waterwheel

A gravity-type waterwheel, the most efficient wheel for very low heads and small quantities of water.