What are the advantages of using thew spinning jenny

high delivery speeds; low yarn production costs (lower than those of ring spinning); elimination of rewinding; low end breakage rates; yarn character similar to that of ring-spun yarn; no wrapping fibers; optically good mass evenness (well suited to knitted goods); better and softer handle than that of rotor-spun yarn; smooth yarn appearance.

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