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US 6,276,462 B1Granted
Combination tillage equipment for providing a smooth finish
AssigneeCase Corporation
InventorWilliam J. Dietrich, Sr.
Life of this patent
Estimating the term…
Abstract
A tillage apparatus performs shallow tillage with leading tillage discs followed by chisel plows with winged points performing primary tillage in strips of untilled soil left by the forward discs. The points lift the soil and roll it laterally. Levelers follow the plows to leave a smooth surface and reduce the soil preparation needed for planting the following season.
Claims19
An agicultural tillage implement comprising:
- a pull frame having a forward hitch adapted to be coupled to a tractor and including at least first and second support wheels;
- a forward set of widely spaced discs carried by said pull frame and tilling soil at a first depth, said forward set including a plurality of discs on the left side of the center line of said pull frame and a plurality of discs on the right side of said center line, the discs of said forward set throwing soil outwardly of a center line of said implement;
- a rear set of widely spaced discs carried by said pull frame and tilling soil, said rear set including a plurality of discs on the left side of the center line of said pull frame and a plurality of discs on the right side of said center line, the discs of said rear set throwing soil tilled by an associated disc of said forward set of discs and newly tilled soil inwardly toward said center line;
- said forward and rear sets of discs being located to leave strips of untilled soil between pairs of associated discs, one from the forward set and one from the rear set;
- and
- a plurality of chisel plows carried by said pull frame and located to the rear of said tillage discs, said chisel plows performing tillage at a second depth deeper than said first depth, each chisel plow having a shank and a tillage point carried by said shank located substantially directly beneath an edge of an associated one of said strips of untilled soil left by said pairs of associated tillage discs, whereby said chisel plows fracture soil in a region adjacent and below a furrow cut by one of said tillage discs and said edge of an associated strip of untilled soil.
3 more elements
Dependencies are inferred from the claim text.