from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A wheel turned by treading, climbing, or pushing with the feet upon its periphery, as for example in a treadmill.

from the GNU version of the Collaborative International Dictionary of English

  • n. A wheel turned by persons or animals, by treading, climbing, or pushing with the feet, upon its periphery or face. See treadmill.

from The Century Dictionary and Cyclopedia

  • n. A contrivance for utilizing the weight of men or animals to produce rotary motion, which can then be applied to various mechanical purposes.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a mill that is powered by men or animals walking on a circular belt or climbing steps
  • n. a mill that is powered by men or animals walking on a circular belt or climbing steps


tread +‎ wheel (Wiktionary)


  • To pay higher and higher co-payments on the medicines we take to cure us of the stress and anxiety caused by the enormous treadwheel on which we run?

    Think Progress » Strategy Memo: White House Efforts to Undercut Torture Amendment Continue

  • [With a Rube Goldberg treadwheel-mouse-generated shoe-lever in the plastic butt to TexasBestGrok for the link.]

    July 2004

  • Judging by the data on a water-raising treadwheel that was in operation until the mid-'30s at Conradsburg in the Harz Mountains, one could easily come to the opposite conclusion, since the system was veritably ridden with friction losses: the bearing had to support not only the weight of the disk or wheel, but also that of the animal.

    5. Draft Animals: All Work and No Play?

  • Finally, with great structural intricacy, the aim of becoming independent from the will and moods of the animal and simultaneously minimizing the output fluctuations was accomplished by tying the animal in place - often enough with a noose around its neck - in a treadwheel or on a disk.

    5. Draft Animals: All Work and No Play?

  • Also around 1870, the tread power appeared as the industrial form of the old treadwheel and disk.

    5. Draft Animals: All Work and No Play?

  • The former are exposed to the inclemencies of the weather, and the hardships of toil -- the latter are cruelly dragged away from their infants, that the master may not lose the smallest portion of time, -- and _both_ are liable at any moment to be incarcerated in the dungeon, or strung up on the treadwheel.

    The Anti-Slavery Examiner, Omnibus

  • The treadwheel crane remained in use until the end of the 1800s

    Energy Bulletin -

  • This concerns a treadwheel with a diameter of 456 centimetres: 2 x 213 cm radius of the wheel + 2 x 15 cm radius of the drum (diameter = 2 x radius).

    Energy Bulletin -

  • This study gives an informed look at medieval treadwheel cranes, inluding how to calculate the mechanical advantage of a treadwheel.

    Energy Bulletin -

  • A treadwheel with a wheel radius of 7 feet (213 cm) and a drum radius of 0.5 feet (15 cm) has a mechanical advantage of 14 to one.

    Energy Bulletin -


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