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| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
| Hargreaves, James |
(här´gr vz) (KEY) , 1720?–1778, English engineer. In 1762 he made an unsuccessful attempt to develop a machine for carding, a process preparatory to spinning, and in 1764 he invented the spinning jenny, which resulted in doubling production in the carding process. |
| The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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