James Hargreaves
Who was James Hargreaves?
How did the spinning jenny work?
What did James Hargreaves invent?
James Hargreaves (baptized January 8, 1721, Oswaldtwistle, Lancashire, England—died April 22, 1778, Nottingham, Nottinghamshire) was an English inventor of the spinning jenny, the first practical application of multiple spinning by a machine. By enabling a single worker to spin multiple threads simultaneously, his invention dramatically increased the productivity of yarn making and helped transform textile manufacturing during the Industrial Revolution. Hargreaves’s invention also helped pave the way for other important advances in spinning technology, including Richard Arkwright’s water frame and Samuel Crompton’s spinning mule.
- Born: January 8, 1721, Oswaldtwistle, Lancashire, England
- Died: April 22, 1778 (age 57), Nottingham, Nottinghamshire
- Occupation: Weaver, spinner, and inventor
- Invention: Spinning jenny
Hargreaves was a poor spinner and weaver with limited formal education. He was living at Stanhill, near Blackburn, Lancashire, at a time when spinning was commonly performed by hand using a spinning wheel, which generally produced only one thread at a time. About 1764 Hargreaves is said to have conceived the idea for his hand-powered multiple spinning machine when he observed a spinning wheel that had been accidentally overturned by his young daughter. According to a popular story, as the spindle continued to revolve in an upright rather than a horizontal position, Hargreaves reasoned that many spindles could be so turned. He constructed a machine with which one individual could spin several threads at one time.
Hargreaves’s original spinning jenny had eight spindles arranged in a row and operated by a single hand-turned wheel. The operator used a sliding carriage to draw out the fibers, which were twisted into yarn by the rotating spindles. The newly spun yarn was then wound onto the spindles as the carriage was returned to its starting position. Later versions incorporated dozens of spindles, allowing a single worker to produce far more yarn than was possible with a traditional spinning wheel. The spinning jenny’s main limitation was that it produced weaker thread suitable only for weft (filling yarn), and was intended for domestic use or for small workshops.
The spinning jenny greatly increased the productivity of yarn making, but its introduction also provoked resistance from workers who feared that the new machinery would threaten their livelihoods. In 1768, after he began to sell the machines to help support his large family, a group of hand spinners broke into his house and destroyed a number of jennies. Hargreaves subsequently moved to Nottingham, Nottinghamshire, England, where he and a partner, Thomas James, built a small mill in which they used jennies to spin yarn for hosiers. He received a patent for the jenny on July 12, 1770. Until his death, he worked at the mill, which proved moderately successful.

