| 2. |  | A part of Knowles, Taylor and Knowles Pottery and surrounding, East Liverpool, Ohio | East Liverpool (Ohio); Potteries; Knowles, Taylor and Knowles Pottery | In 1870 Isaac Knowles invented the "pull down" or "jigger" revolutionizing potting which until this time had been done entirely by hand. Knowles, Taylor & Knowles were the first to introduce the production... |