Treadwheel
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A treadwheel, or treadmill, is a form of engine typically powered by humans. It may resemble a water wheel in appearance, and can be worked either by a human treading paddles set into its circumferenc
British penal treadwheel
Roman drainage treadwheel from Rio Tinto mines, Spain
Treadmill
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A treadmill is a device generally used for walking, running, or climbing while staying in the same place. Treadmills were introduced before the development of powered machines to harness the power of
Treadwheel
…circumference (treadmill), or by a human or animal standing inside it (treadwheel). These devices are no longer used for power or punishment, and the term "treadmill" has come to mean an exercise machine for running, walking or other exercises in place. Uses of treadwheels included raising water, to power cranes…
Example of modern treadmill
Horses powering a threshing mill
Treadmill used to punish prisoners at Breakwater Prison, Cape Town
Treadmill test at the medical center of the Olympic village at the 1980 Summer Olympics