Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7121040 | Combination foliage compaction and treatment method and apparatus Method and apparatus for applying liquids to foliage with a roller and adjustable spray nozzle apparatus. A large heavy roller is pulled or pushed across a field of plants, thereby forcing the plants very close to the ground. A height adjustable applicator nozzle di... | 10/17/2006 |
| 4624195 | Gravity spreader A gravity spreader includes a hopper having openings in its bottom through which material flows when a shutter is not in a closed position with the position of the shutter determining the rate of flow of material. A fluted roller allows the material to fl... | 11/25/1986 |
| 4338871 | Soil cultivating implement including dispenser and support roller A rotary harrow or cultivator has a frame that supports a plurality of soil working members arranged in a row that extends transverse to the direction of travel. The frame includes two linked portions and one portion is connected to a rear support roller ... | 07/13/1982 |
| 4244307 | Broadcast seeder including driven tools and roller A soil working machine has an elongated frame portion that supports a row of soil working tools that extends transverse to the direction of travel. The machine is partly supported by rear wheels that are located adjacent the lateral sides of the machine a... | 01/13/1981 |
| 3995569 | Two part lawn treating machine A lawn treating machine consisting of a wheeled front section and a wheeled rear section hinged together by a hydraulically operated vertical hinge mechanism for steering the machine. The front section includes a hydraulically driven scattering mechanism ... | 12/07/1976 |
