The automatic one Josephine Cochran invented was too expensive for home use, but restaurants loved it
In 1893 Cochrane 
convinced restaurants at the World's Columbian Exposition in Chicago to use... [DOC] [TLE] Early Mechanical Dishwashing - Automaticwasher.org [PAR] His machine was cylindrical in shape and made use of a paddle wheel to ... 
Josephine began to market her dishwasher to restaurants under the trade ... steel 
dish racks and the first automatic water level measuring valve.