Also around 1870, the tread power appeared as the industrial form of the old treadwheel and disk.    From Wordnik.com.  [5. Draft Animals: All Work and No Play?] Reference

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?.    From Wordnik.com.  [Think Progress » Strategy Memo: White House Efforts to Undercut Torture Amendment Continue] Reference

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.    From Wordnik.com.  [5. Draft Animals: All Work and No Play?] Reference

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.    From Wordnik.com.  [5. Draft Animals: All Work and No Play?] Reference

A large treadwheel gives a mechanical advantage of 14 to 1.    From Wordnik.com.  [Energy Bulletin -] Reference

The treadwheel crane remained in use until the end of the 1800s.    From Wordnik.com.  [Energy Bulletin -] Reference

An even more powerful lifting aid than the winch or capstan was the treadwheel.    From Wordnik.com.  [Energy Bulletin -] Reference

The most powerful treadwheel harbour cranes were built in the London docklands in the.    From Wordnik.com.  [Energy Bulletin -] Reference

Luckily, a few treadwheel cranes have been preserved, all of them in the attics of churches and cathedrals.    From Wordnik.com.  [Energy Bulletin -] Reference

The enigmatic crocuta has a few acquaintance to say sparingly the insolubility of minipress and its chilean treadwheel.    From Wordnik.com.  [Rational Review] Reference

Dockside treadwheel cranes were frequently capped by a wooden roof to protect the mechanics and the workers from the rain.    From Wordnik.com.  [Energy Bulletin -] Reference

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.    From Wordnik.com.  [Energy Bulletin -] Reference

This study gives an informed look at medieval treadwheel cranes, inluding how to calculate the mechanical advantage of a treadwheel.    From Wordnik.com.  [Energy Bulletin -] Reference

One of these treadwheel cranes, in Britain's Canterbury Cathedral, was used for a renovation project in the 1970s (picture on the right, source).    From Wordnik.com.  [Energy Bulletin -] Reference

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).    From Wordnik.com.  [Energy Bulletin -] Reference

Safety mechanisms (to prevent plummeting loads and sudden reverse rotation of the treadwheel or capstan) were introduced only in the late eighteenth century.    From Wordnik.com.  [Energy Bulletin -] Reference

Although the mechanical advantage of a capstan is considerably lower than that of a treadwheel, they could be powered by much more people and so less machines would be needed.    From Wordnik.com.  [Energy Bulletin -] Reference

With a mechanical advantage of 14 to one, one man in a treadwheel operating a Pentaspastos and exerting a force of 50 kilograms could thus lift a load of 3500 kilogram or 3.5 tonnes.    From Wordnik.com.  [Energy Bulletin -] Reference

While the lifting capacity of a ancient treadwheel crane is impressive, attentive readers will have noticed that Roman buildings contained stone blocks that were considerably heavier than that.    From Wordnik.com.  [Energy Bulletin -] Reference

Another well described medieval lifting device is the large treadwheel slewing crane that stood on top of the 157 metre high Cologne Cathedral in Germany for almost 450 years (on the right, source).    From Wordnik.com.  [Energy Bulletin -] Reference

Cranes operated by winches are again recorded from the late 12th century onwards, large treadwheel cranes only reappear in the 13th (France) and 14th (England) centuries - a bit later than windmills and waterwheels.    From Wordnik.com.  [Energy Bulletin -] Reference

A mechanical advantage of 632 to 1 means that each of the four men had to apply a force of only 23.7 kilograms in order to lift a weight of 60 tonnes - and this while operating a winch instead of a more efficient treadwheel. most powerful crane in the world today (since September 2009) has a lifting capacity of 20,000 tonnes.    From Wordnik.com.  [Energy Bulletin -] Reference

Many | Numerous | Some | Some adult males are set out physical exercise by the image of men with protruding muscular tissues hoisting large weights or beating away on the treadwheel.    From Wordnik.com.  [Article Source] Reference