Josephine Garis Cochran (1839-1913) made the first practical mechanical dishwasher in 1886. First she measured the dishes. Then she built wire compartments, each specially designed to fit either plates, cups, or saucers. The compartments were placed insid
Josephine Garis Cochran (1839-1913) made the first practical mechanical dishwasher in 1886. First she measured the dishes. Then she built wire compartments, each specially designed to fit either plates, cups, or saucers. The compartments were placed inside a wheel that lay flat inside a copper boiler. A motor turned the wheel while hot soapy water squirted up from the bottom of the boiler and rained down on the dishes. She patented her design and went into production. She showed her invention at the 1893 World's Columbian Exposition in Chicago and won the highest prize for "best mechanical construction, durability and adaptation to its line of work".
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