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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7891498 | High capacity length grading machine A liftings trough for mounting in an interior space of a rotatable member of a length grading machine is defined by walls that are contoured to provide a maximum clearance between the mounted trough and an inlet opening through which grain flows into the interior sp... | 02/22/2011 |
| 7845498 | Separation of metals from sand The present invention provides a method and an apparatus for removing heavy metals such as gold from sand. A mixture of sand and metals is placed in a hollow tube which has an open end, an opposite closed end at a relatively lower position, an exterior, and an inter... | 12/07/2010 |
| 7246707 | Two-slat design for a small piece remover A slat arrangement for use with an apparatus that removes undesirable pieces from a plurality of pieces based upon size. The slat arrangement comprises a plurality of slats, wherein adjacent slats define a plurality of pockets. ... | 07/24/2007 |
| 7080742 | Method and apparatus for improving silicon processing efficiency A method for processing polycrystalline silicon workpieces to form size distributions of polycrystalline silicon pieces suitable for use in a Czochralski-type process includes: (1) preparing a polycrystalline silicon workpiece by a chemical vapor deposition process;... | 07/25/2006 |
| 6889851 | Bar screen A bar screen is primarily intended for use in draining liquid from wood chips and pulp without blocking the bar screen. The area of use is especially a process area, in which cooking and circulation liquid is removed from a pressure vessel when making chemical pulp ... | 05/10/2005 |
| 6244445 | Moisturizing equipment A hollow rotating drum 1 is provided in an oblique manner and is rotated by two pairs of rollers 3a, 3b. A size classification unit 2 is provided in the vicinity of a center of the rotating drum in a lengthwise direction of the drum, and water is added fr... | 06/12/2001 |
| 5335792 | Grain separator A grain separator is disclosed comprising a plurality of operatively connected grain separator units and a grain inlet for feeding grain into the separator, wherein the grain is separated . The grain separator also has an outlet for dispensing the grain a... | 08/09/1994 |
| 5163565 | System for separating particles in a rotary separator A rotary drum separator is provided having a plurality of elongated pockets that extend in the direction of pocket movement, wherein more than one kind of particle in a bulk mixture in the drum longitudinally may lodge in the pockets; wherein each of the ... | 11/17/1992 |
| 4842144 | Grain sorter for use in a rotary type rice hulling and sorting device A grain sorter for use in a rotary type rice hulling and sorting device comprising a hulling part, a pneumatical sorting part, sorting cylinders rotatably installed so that mixed rice grains may be fed from one end and the sorter rice grains may be discha... | 06/27/1989 |
| 4731802 | Apparatus for counting substantially cylindrical articles An apparatus for counting substantially cylindrical articles comprises a rotatable elevator cylinder having a circumferential series of compartments for the articles on the inside surface of the cylindrical wall thereof. Means are provided for sensing the... | 03/15/1988 |
| 4722445 | Length separator A length separator comprising at least one rotational member, e.g. a disc or a cylinder, having cells for lifting seeds and other particles from a lower position to a higher position, and a trough for receiving the lifted material. The rotatable member is... | 02/02/1988 |
| 4720473 | Production of improved catalyst-type particles using length and density grading A spent hydrotreating catalyst having carbonaceous and metallic deposits comprising generally cylindrical, free flowing particles of regular geometric shape having substantially the same diameter but of varying length is stripped, length graded, density g... | 01/19/1988 |
| 4535895 | Sorting device A sorting device for sorting out a multiplicity of pieces such as tickets according to their size, comprises a cylindrical sorter drum rotatably mounted in a frame for storing therein pieces having different sizes to be sorted out, means on the sorter dru... | 08/20/1985 |
| 4533054 | Rotary fuel homogenizer and use thereof Solid waste incinerator fuel is preclassified by passing it through a hollow rotating cylindrical drum which has two sets of extensions from the wall going lengthwise along the length of the drum, the first set toward one end and the second toward the oth... | 08/06/1985 |
| 4441412 | Driving device of sorting cylinder for use in a rotary type rice hulling and sorting device A driving device of sorting cylinders for use in a rotary type rice hulling and sorting device, characterized by comprising a hulling part, a pneumatical sorting part and a rotary type sorting part provided with sorting cylinders rotatably installed there... | 04/10/1984 |
| 4415088 | Cylinder-type rotary sorting apparatus A machine for hulled grain employs a single horizontally disposed rotating hollow cylindrical body having its interior surface covered with a multiplicity of recesses designed to scoop up individual hulled grains at the bottom and to drop them out near th... | 11/15/1983 |
| 4392421 | Rice hulling and sorting device A rice hulling and sorting machine includes a pair of hulling rolls which drop husked rice grains into a pneumatic sorting compartment which the husks are preliminary sorted from the rice grains; the rice grains thereafter being thrown upwardly into one e... | 07/12/1983 |
| 4258851 | Raisin separating machine Herein described is a machine for removing raisins spoiled by mold from good raisins. An angularly disposed rotating screened cylinder causes raisins to be lifted and dropped to the bottom of the cylinder. Because of the fact that the bad raisins are soft... | 03/31/1981 |
