Parker May - Inventions timeline By CailM 1764 Spinning Jenny The Spinning Jenny was invented in 1764 by James Hargreaves, a cotton weaver, from Oswaldtwistle, Lancashire. He invented the first successful multi-spindle spinning machine. The early jennies were awkward to operate and required considerable skill. 1778 The Watt Steam Engine 1779 Spinny Mule 1785 The Power Loom 1794 The Cotton Gin