Wood, Jethro

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Jethro Wood, 1774–1834, American inventor, b. either in Dartmouth, Mass., or in Washington co., N.Y. In 1814, while a farmer in Cayuga co., N.Y., he patented a cast-iron plow in which he later embodied improvements (patented 1819). He used in the improved model replaceable cast-iron parts and a curved plate called a moldboard from which the shape of the modern moldboard is derived. Litigation concerning his patent rights impoverished him.

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