Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7011477 | Adjustable deburring tool An adjustable deburring tool has a cutting head and a shank. The cutting head has a projecting ridge with a recessed portion. The shank has a groove that communicates with an open ended and open sided threaded bore. The ridge is slidably located in the groove with a... | 03/14/2006 |
| 4533285 | Cutting attachment for boring tool An attachment for use with a tool having a cutting surface on one end of a bar consists of a collar that has an opening corresponding substantially to the cross-sectional configuration of the bar and is frictionally supported thereon in any angular or axi... | 08/06/1985 |
