<P> 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 by James Hargreaves in Stanhill, Oswaldtwistle, Lancashire in England . The device reduced the amount of work needed to produce cloth, with a worker able to work eight or more spools at once . This grew to 120 as technology advanced . The yarn produced by the jenny was not very strong until Richard Arkwright invented the water - powered' Water Frame', which produced yarn harder and stronger than that of the initial spinning jenny . It started the factory system . </P> <P> The spinning jenny was invented by James Hargreaves . He was born in Oswaldtwistle, near Blackburn, around 1720 . Blackburn was a town with a population of about 5,000, known for the production of "Blackburn greys," cloths of linen warp and cotton weft initially imported from India . They were usually sent to London to be printed . </P>

Who invented the spinning jenny and what did it do