| Y/M/D | Description | Place |
|---|---|---|
| 1785/00/00 | Oliver Evans invents the Automatic Flour Mill which, according to Evans' own calculations, it can reduce costs by 50 percent. | |
| 1789/00/00 | Ellicotts are among the first merchant millers in the country to adopt the Oliver Evans patented system of mill automation. | Ellicott's Mills Historic District, Oella |
| 1790/00/00 | In 1790, upon introduction of federal patent law, Oliver Evans applies for protection for his automatic milling designs. | |
| 1790/00/00 | Secretary of State Thomas Jefferson personally examines and approves Oliver Evans patent for an Automatic Flour Mill. | |
| 1790/00/00 | After Attorney-General Edmund Randolph personally examines Oliver Evans application, Mr Evans is granted United States Patent No 3. | |
| 1790/00/00 | Secretary of War Henry Knox approves Oliver Evans patent for an Automatic Flour Mill. | |
| 1791/10/00 | Oliver Evans' two brothers install an Evans system to automate Washington's gristmill, fall of 1791. | George Washington's Distillery and Gristmill, Mt Vernon, VA |
| 1795/00/00 | Instructions for "The Practical Millwright" by Thomas Ellicott is include with drawings as a section of Oliver Evans' "Young Mill-wright and Miller's Guide", published in 1795. | Mill House Museum, Occoquan |
| 1796/00/00 | Thomas Ellicott's mill, with 3 water wheels and 6 pairs of stones, is set up so that wheat can be delivered by ship or wagon. Ellicott's 10 page article describing his new mill is published in the journal Repertory of Arts and Manufactures, London, 1796. | Mill House Museum, Occoquan |
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