Josephine Cochrane, a wealthy socialite, invented the first commercially successful automatic dishwasher because she was tired of her servants chipping her fine china. Unlike previous manual attempts, Cochrane's machine used high water pressure to clean dishes placed in wire racks inside a copper boiler. She unveiled her 'Garis-Cochran' machine at the 1893 Chicago World's Fair, where it won top honors. While early models were primarily sold to hotels and restaurants due to their size and the requirement for large amounts of hot water, the dishwasher eventually became a staple of the post-WWII modern home. Cochrane's company eventually became KitchenAid. The invention is a landmark in the history of labor-saving devices, emphasizing the shift toward automation for repetitive, time-consuming household tasks.