Tractor
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A tractor is an engineering vehicle specifically designed to deliver a high tractive effort at slow speeds, for the purposes of hauling a trailer or machinery such as that used in agriculture, mining or construction. Most commonly, the term is used to describe a farm vehicle that provides the power and traction to mechanize agricultural tasks, especially tillage, and now many more. Agricultural implements may be towed behind or mounted on the tractor, and the tractor may also provide a source of power if the implement is mechanised.
The Ford N-series tractor helped revolutionize modern mechanized agriculture with its Ferguson three point hitch
A modern Ukrainian tractor XTZ-243K
This Hayes WHDX 70-170 6×6 ballast tractor is also a form of tractor, as are artillery tractors and the power units which pull semi-trucks
1882 Harrison Machine Works steam-powered traction engine
Steam tractor
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A steam tractor is a tractor powered by a steam engine which is used for pulling.
Case steam tractor
Steam Tractor at the Henry Ford Museum
A 1905 Best steam tractor (manufactured in California).
The drive belt: used to transfer power from a portable engine to a threshing machine