James Hargreaves, a weaver and carpenter from Lancashire, secured a patent for his spinning jenny, a device allowing a single operator to spin multiple spools of thread simultaneously. The invention dramatically increased textile output and lowered production costs, but it also provoked violent backlash from hand-spinners who feared unemployment, some of whom broke into Hargreaves' house and destroyed his machines.
Legend holds that Hargreaves invented the device after watching a spinning wheel his daughter (or possibly his wife) accidentally knocked over continue spinning on its side, giving him the idea that multiple spindles could be worked vertically from a single wheel. Whether or not the story is true, the machine he built could operate eight spindles at once, a number that later versions expanded to eighty or more.
The jenny's efficiency terrified hand spinners, who saw it as a direct threat to their livelihoods in an era with no safety net. A mob in Blackburn stormed his home in 1768, smashing his machines and forcing him to flee to Nottingham, where he finally secured his patent in 1770 — though it came too late, since he had already sold several machines and courts later ruled his patent unenforceable.
Hargreaves died in relative poverty in 1778 despite the enormous wealth his invention helped generate for the British textile industry. His device, alongside Arkwright's water frame and Crompton's spinning mule, formed the mechanical backbone of the factory system that transformed Britain from a rural, agrarian economy into the world's first industrial superpower.
Key people: James Hargreaves