Crop threshing or separating – Threshing – Axial flow through threshing section
Reexamination Certificate
1998-12-10
2001-02-20
Will, Thomas B. (Department: 3671)
Crop threshing or separating
Threshing
Axial flow through threshing section
C460S068000, C460S080000
Reexamination Certificate
active
06190252
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to an improved rotor for a combine harvester which effectively prevents vines and stalks of crop plants from wrapping about and binding up the rotor making it virtually impossible for the combine harvester to function properly.
Combine harvesters typically are used to harvest crops and some of the combine harvesters have a rotor which is disposed generally parallel to the direction of movement of the combine harvester. The rotor is generally used to separate the grain from the vine or stalk and to move the vine or stalk through the back end of the combine harvester. As the combine harvester moves through the field, the combine harvester severs the stalk or vine of the crop plant near the base thereof, and the stalk or vine is moved through the combine harvester and along the rotor which removes the grain from the vine or stalk with the grain being moved into a hopper and the vine or stalk being disposed of out the back end of the combine harvester.
The crop plants are best harvested when there is still some moisture content in the grain which also means that the vine and stalk will also have some moisture content. What typically happens is that the vine or stalk behaves similar to wire and tends to wrap about and essentially binds up the rotor thus causing the combine harvester to break down. In an attempt to solve this problem, the prior art includes a plurality of short generally rectangular members which are disposed parallel upon the rotor near the front end thereof and which are also spaced from one another about the rotor. Unfortunately, the vine and stalk from the crop plants have continued to wrap about and bind up the rotors of the prior art.
None of the prior art describes the present invention which substantially solves the problem of the vine and stalk wrapping about the rotor and causing the combine harvester to break down.
SUMMARY OF THE INVENTION
The present invention includes a conventional rotor having a front end and a back end and being rotatably mounted upon a shaft inside a combine-harvester and being disposed generally parallel to the direction of movement of the combine-harvester. The conventional rotor further includes a cylindrical member and a plurality of conventional rub members which includes a plurality of rectangular rub bar members conventionally attached to the exterior of the cylindrical member and being spaced thereabout and which further includes conventional spiral rub bar members conventionally attached to the exterior of the cylindrical member. These rub members are disposed about the front portion of the cylindrical member. Also, the rotor includes three threshing members which are disposed near the rear end of the rotor and which are spaced approximately 120 degrees apart form one another about the exterior of the rotor. Further the rotor comprises three spiral members each having a first end which is disposed at a respective threshing member, and each having a second end which is disposed at a respective rectangular rub bar member. The spiral members extend approximately 270 degrees about the exterior of the rotor and substantially prevent the vines and stalks of the crop plants from wrapping about and binding up the rotor.
One objective of the present invention is to provide a rotor for a combine-harvester which substantially prevents the vines and stalks of crop plants from wrapping about and binding up the rotor thus causing the combine-harvester to break down.
Another objective of the present invention is to provide a rotor for a combine-harvester which allows the combine-harvester to be operated at less engine power.
Yet another objective of the present invention is to provide a rotor for a combine-harvester which allows the user to harvest one's crops more quickly and effectively.
Further objectives and advantages of the present invention will become apparent as the description proceeds and when taken in conjunction with the accompanying drawings wherein:
REFERENCES:
patent: 1571128 (1926-01-01), Lucas
patent: 2493105 (1950-01-01), Bunting
patent: 3481342 (1969-12-01), Rowland-Hill et al.
patent: 4266560 (1981-05-01), Powell et al.
patent: 4505279 (1985-03-01), Campbell et al.
patent: 5045025 (1991-09-01), Underwood
patent: 5919086 (1999-07-01), Derry
patent: 2024595A (1980-01-01), None
Lingbeck David A.
Petravick Meredith C.
Will Thomas B.
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