shaduf


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shaduf

or

shadoof

(both: shədo͝of`, shä`do͝of), primitive device used to lift water from a well or stream for irrigation purposes. Essentially the device consists of a long boom balanced across a horizontal support from 8 to 10 ft (2.4–3 m) above the ground. The beam has a long, thin end and a short, stubby end. From the long end a bucket or similar container is suspended, and on the shorter end there is a counterweight. The operator pulls on a rope that lowers the long end of the boom so that the bucket submerges and is filled with water. He then releases the rope, allowing the counterweight to raise the bucket to the desired level, and then empties the bucket and repeats the process. Shadufs can be used in a series where it is desired to raise water to a height exceeding the range of a single one. It has been suggested that the massive stones used in building the pyramids of Egypt were raised by an ancient variant of this device.
References in periodicals archive ?
In the former, a monumental two-volume tome titled Hazz al-quhuf bi-sharh qasid Abi Shaduf, translated as "Brains Confounded by the Ode of Abu Shaduf Expounded," Yusuf al-Shirbini (fl.
Year 10 pupils from Cardinal Newman Catholic Comprehensive in Rhydfelin, Tonyrefail Comprehensive, and Ysgol Gyfun Rhydywaun, in Hirwaun, were challenged by Welsh Water to produce a shaduf, a chain pump and an Archimedes screw.
He uses a donkey pump, also known as an Egyptian Shaduf, which is simply a hand pump that uses an old tractor tire to pump the water.
Yusif al Shirbini's Hazz al Quhuf bi Sharh Qasid Abu Shaduf: issue relevant to its assessment as a source for 17th c.
Davies, an award-winning translator of some twenty works of modern and classical Arabic literature, is also editor-translator of Leg over Leg, as well as Yusuf al-Shirbini's strange and fascinating Brains Confounded by the Ode of Abu Shaduf Expounded.
127-30; for similar, and more elaborate, samples in Ottoman popular narratives, see Yusuf al-Shirbini, Brains Confounded by the Ode of Abu Shaduf Expounded, ed.