US3707833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corn harvester rolls
Assignee: Case LLC
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Filing: 1968-04-08
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Granted: 1973-01-02
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Expires: 1988-04-08
Abstract
Abstract An apparatus for separating ears of sweet corn from the stalk for minimizing damage to the ears. The apparatus has blades with cutting edges that cut through a substantial portion of the stalk and then pull the stalk away from the ear to rupture the uncut portion of the stalk. The ears are held by stripper plates during the rupture of the stalks. The blades are arranged with respect to the stalk such that the pulling force is applied to the stalk over a large flat surface normal to the longitudinal axis of the stalk.
Inventors
- 👤 R Sutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:18
CPC Classifications
A; A01; A01D; A01D45/00; A01D45/02; A01D45/021; A01D45/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
148 words
For use in a corn picking apparatus, a pair of rotating processing rolls, means mounting said pair of rolls about substantially parallel axes, each of said rolls including a core, means for simultaneously rotating said pair of rolls in timed relationship to snap ears of corn from corn stalks, a plurality of elongated stalk-engaging blades affixed to each of said cores, each of said blades comprising a fastening area for abutting said core in tangential relation with a circle inscribed within the core about its axis and a working area spaced from said fastening area, each of said working areas having a flat pressure surface arranged such that as the rolls rotate said flat pressure surface approaches and lies within the plane extending through said parallel axes, the working area of each of said blades terminating in longitudinal edges, said longitudinal edges being beveled to form cutting edges.
Claim 2
Dependent Claim
148 words
For use in a corn picking apparatus, a pair of rotating processing rolls, means mounting said pair of rolls about substantially parallel axes, each of said rolls including a core, means for simultaneously rotating said pair of rolls in timed relationship to snap ears of corn from corn stalks, a plurality of elongated stalk-engaging blades affixed to each of said cores, each of said blades comprising a fastening area for abutting said core in tangential relation with a circle inscribed within the core about its axis and a working area spaced from said fastening area, each of said working areas having a flat pressure surface arranged such that as the rolls rotate said flat pressure surface approaches and lies within the plane extending through said parallel axes, the working area of each of said blades terminating in longitudinal edges, said longitudinal edges being beveled to form cutting edges.
Claim 3
Dependent Claim
36 words
The invention as set forth in claIm 1 wherein each of said blades are bent longitudinally between said fastening and said working area such that said working area extends radially with respect to the roll axis.
Claim 4
Dependent Claim
41 words
The invention as set forth in claim 2 wherein said rolls rotate in opposite directions such that said cutting edges move downwardly towards the adjacent roll and wherein said cutting edges are formed along the leading corner of said longitudinal edges.
Claim 5
Dependent Claim
178 words
In a corn-picking apparatus, the combination of a pair of corn-feeding rolls mounted on substantially parallel axes to define a stalk-feeding slot therebetween; each of said rolls including a core, a plurality of elongated stalk-engaging blades affixed to each of said cores, each of said blades comprising a fastening area for abutting said core in tangential relation with a circle inscribed within the core about its axis and a working area spaced from said fastening area, each of said working areas having a flat pressure surface arranged such that as the rolls rotate said flat pressure surface approaches and lies within the plane extending through said parallel axes, the working area of each of said blades terminating in longitudinal edges, said longitudinal edges being beveled to form cutting edges, means for effecting simultaneous rotation of said rolls in timed relationship to snap ears of corn from corn stalks; a pair of stripper plates overlying said pair of corn-feeding rolls, said stripper plates being spaced from each other to define a material feeding slot aligned with said stalk-feeding slot.
Claim 6
Dependent Claim
178 words
In a corn-picking apparatus, the combination of a pair of corn-feeding rolls mounted on substantially parallel axes to define a stalk-feeding slot therebetween; each of said rolls including a core, a plurality of elongated stalk-engaging blades affixed to each of said cores, each of said blades comprising a fastening area for abutting said core in tangential relation with a circle inscribed within the core about its axis and a working area spaced from said fastening area, each of said working areas having a flat pressure surface arranged such that as the rolls rotate said flat pressure surface approaches and lies within the plane extending through said parallel axes, the working area of each of said blades terminating in longitudinal edges, said longitudinal edges being beveled to form cutting edges, means for effecting simultaneous rotation of said rolls in timed relationship to snap ears of corn from corn stalks; a pair of stripper plates overlying said pair of corn-feeding rolls, said stripper plates being spaced from each other to define a material feeding slot aligned with said stalk-feeding slot.
Claim 7
Dependent Claim
36 words
The invention as set forth in claim 4 wherein each of said blades are bent longitudinally between said fastening and said working area such that said working area extends radially with respect to the roll axis.
Claim 8
Dependent Claim
41 words
The invention as set forth in claim 5 wherein said rolls rotate in opposite directions such that said cutting edges move downwardly toward the adjacent roll and wherein said cutting edges are formed along the leading corner of said longitudinal edges.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |