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Shadoof in Estonia. A shadoof or shaduf [1] is an irrigation tool that is used to lift water from a water source onto land or into another waterway or basin. It is highly efficient, and has been known since 3000 BCE. [citation needed] The mechanism of a shadoof comprises a long counterbalanced pole on a pivot, with a bucket attached to the end ...
The Ohio Country (Ohio Territory, [a] Ohio Valley [b]) was a name used for a loosely defined region of colonial North America west of the Appalachian Mountains and south of Lake Erie. Control of the territory and the region's fur trade was disputed in the 17th century by the Iroquois, Huron, Algonquin, other Native American tribes, and France .
As a result of the exploits of George Rogers Clark in 1778, Ohio Country (including the territory of the future state of Ohio) as well as eastern Illinois Country, became Illinois County, Virginia by claim of conquest under the Virginia Colony charter. The county was dissolved in 1782 and ceded to the United States.
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Edward Huber (September 1, 1837, Dover, Indiana – August 26, 1904, Marion, Ohio) was an American inventor and industrialist.. Huber established his role in the modernization of American agriculture when he invented a “revolving hay rake” (patented in 1863) [1] that allowed one man to do in three hours what three men could do in a day.
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Garrett Augustus Morgan Sr. (March 4, 1877 – July 27, 1963) was an American inventor, businessman, and community leader.His most notable inventions were a type of three-way traffic light, [1] and a protective 'smoke hood' [2] notably used in a 1916 tunnel construction disaster rescue.
The lever was used in the shadoof water-lifting device, the first crane machine, which appeared in Mesopotamia circa 3000 BC, [9] and then in ancient Egyptian technology circa 2000 BC. [10] The earliest evidence of pulleys date back to Mesopotamia in the early 2nd millennium BC.