Sakichi Toyoda
Sakichi Toyoda was a Japanese inventor whose automatic looms stopped themselves when a thread broke, the origin of jidoka, one of the two pillars of the Toyota Production System.
What they did and why it matters
Toyoda's idea that a machine should stop itself the moment something goes wrong, rather than keep producing defects, is a core principle in automated warehouses today. His Type G automatic loom of 1924 stopped when a warp or weft thread broke, so one operator could watch many machines and fix problems at once. Toyota calls this jidoka, automation with a human touch, and proceeds from his loom patents helped fund the automobile business. Conveyor systems that halt on a jam, sorters that divert unreadable labels, and robots that pause when a sensor trips apply the same principle.