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 |
| 4529347 | Method and a device for controlling a silo unloader A method and a device for controlling a silo unloader of the type comprising a first electrical motor for driving a gathering apparatus located on the top of the bulk material and a second electrical motor operating a winch to which is suspended the gathe... | 07/16/1985 |
| 4443149 | Axially moveable auger An auger assembly for transporting seed, fertilizer or other particulate material. The assembly provides an auger within a stationary tube; the auger is mounted to allow free axial movement between adjustable limits. In the normal augering position, the a... | 04/17/1984 |
| 4289437 | Silo unloader lowering control A top unloading silo unloader pendently supported from a tripod with a cable connected to a motor operated winch. An automatic silo unloader let-down control system is operably connected to the winch motor to energize the motor once during each revolution... | 09/15/1981 |
| 4091940 | Silo unloader The invention provides a silo unloader having in connection with its spout assembly, comprised of its discharge spout and its underlying torque arm, features of improvement including means automatically functioning to not only facilitate raising and lower... | 05/30/1978 |
| 3980186 | Silage handling apparatus Apparatus for handling silage material in cylindrical storage bins such as silos and the like comprising a first horizontally stationary ring forming a track around the inside periphery of the silo wall and mounted for vertical movement therein. A second ... | 09/14/1976 |
