Credit for the spinning jenny, the hand-powered multiple spinning machine invented in 1764, goes to a British carpenter and weaver named James Hargreaves. He applied for the patent of the spinning jenny in 1770 but the court rejected his application on the accusation that he made and sold many of them before filing for a petition. The spinning jenny is a multi-spindle spinning frame, and was one of the key developments in the industrialization of weaving during the early Industrial Revolution.It was invented in 1764 or 1765 by James Hargreaves in Stanhill, Oswaldtwistle, Lancashire in England.. James Hargreaves’ Spinning Jenny was one of the most important inventions of the 18th century that massively improved the weaving industry, and that signaled the onset of the Industrial Revolution. His invention was the first machine to improve upon the spinning wheel. Disappointed by the act of the spinners James Hargreaves then moved to Nottingham where he set up a small spinning mill along with Thomas James, his partner. After John Kay’s Flying Shuttle, Hargreaves’ Spinning Jenny is one of the essential improvements to weaving machinery at the time. James Hargreaves' invention of the spinning jenny came at just the right time — a time of technological innovation in looms and weaving in Great Britain. The device reduced the amount of work needed to produce cloth, with a worker able to work eight or more spools at once.