Patent US3734103A successfully refreshed from Google Patents.
US3734103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concave for combines
Assignee: Individual
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Filing: 1971-12-13
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Granted: 1973-05-22
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Expires: 1991-12-13
Abstract
Abstract The concave has a removable blanking plate located beneath the concave bars. A transverse angle extending from one side plate to the other has horizontally and forwardly extending fingers which support the blanking plate so it can be removed in the forward direction. The front concave bar extends downwardly to block removal in the forward direction. The front concave bar is removably screwed to a cross plate to permit removal of the blanking plate. Access is provided by a door in the casing walls. A flange on the blanking plate engages the front ends of the fingers to prevent rearward movement of the blanking plate.
Inventors
- 👤 B Mathews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:26
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/42; A; A01; A01F; A01F12/00; A01F12/10; A01F12/16; A01F12/18; A01F12/20; A01F12/28; A01F12/30; A01F12/32; A01F12/34; A01F12/44; A01F7/00; A01F7/02; A01F7/06; B07B1/28; B07B1/286
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A concave for a combine comprising a grate structure having spaced side plates, a plurality of transverse concave bars extending from one side plate to the other and being secured thereto, a removable shelf located beneath the front part of said grate structure and spaced beneath the lower edges of said concave bars, and means for removably mounting said shelf, said shelf mounting means comprising a transverse member secured at each side end to said side plates, a plurality of brackets secured to said transverse member each having a forwardly extending finger located beneath said concave bars, said shelf comprising a plate member resting on the fingers of said brackets, and locating means to maintain said shelf at the front part of said grate structure so that it underlies the front portion thereof.
Claim 2
Dependent Claim
133 words
A concave for a combine comprising a grate structure having spaced side plates, a plurality of transverse concave bars extending from one side plate to the other and being secured thereto, a removable shelf located beneath the front part of said grate structure and spaced beneath the lower edges of said concave bars, and means for removably mounting said shelf, said shelf mounting means comprising a transverse member secured at each side end to said side plates, a plurality of brackets secured to said transverse member each having a forwardly extending finger located beneath said concave bars, said shelf comprising a plate member resting on the fingers of said brackets, and locating means to maintain said shelf at the front part of said grate structure so that it underlies the front portion thereof.
Claim 3
Dependent Claim
36 words
A concave as claimed in claim 1 in which said locating means includes downwardly extending stop means on said plate member engaging the front edges of said fingers to prevent rearward movement of said plate member.
Claim 4
Dependent Claim
57 words
A concave as claimed in claim 1 which includes a front plate disposed forwardly of said concave bars and extending from one side plate to the other and being secured thereto, a front concave bar removably mounted on said front plate and extending downwardly in front of said shelf to prevent removal thereof in a forwardly direction.
Claim 5
Dependent Claim
184 words
In a combine having a threshing cylinder, and a casing enclosing said threshing cylinder, the combination of a concave located beneath said threshing cylinder within said casing, said concave comprising a grate structure having spaced side plates, and a plurality of concave bars extending from one side plate to the other and being secured to said side plates, a front plate extending from one side plate to the other, a front concave bar removably mounted on said front plate, a shelf located beneath the front part of said grate structure and behind said removable front bar member, and means supporting said shelf in a position spaced beneath the first few of said first mentioned concave bars, said support means permitting withdrawal of said shelf therefrom in the forward direction after removal of said front concave bar from said front plate, said casing including side walls, and a door in each side wall located adjacent thE side edges of said removable front concave bar to provide access to same for removing same from said front plate and for removing said shelf from said support means.
Claim 6
Dependent Claim
184 words
In a combine having a threshing cylinder, and a casing enclosing said threshing cylinder, the combination of a concave located beneath said threshing cylinder within said casing, said concave comprising a grate structure having spaced side plates, and a plurality of concave bars extending from one side plate to the other and being secured to said side plates, a front plate extending from one side plate to the other, a front concave bar removably mounted on said front plate, a shelf located beneath the front part of said grate structure and behind said removable front bar member, and means supporting said shelf in a position spaced beneath the first few of said first mentioned concave bars, said support means permitting withdrawal of said shelf therefrom in the forward direction after removal of said front concave bar from said front plate, said casing including side walls, and a door in each side wall located adjacent thE side edges of said removable front concave bar to provide access to same for removing same from said front plate and for removing said shelf from said support means.
Claim 7
Dependent Claim
138 words
In a combine having a threshing cylinder, and a casing enclosing said threshing cylinder, the combination of a concave located beneath said threshing cylinder within said casing, said concave comprising a grate structure having spaced side plates, a plurality of concave bars extending from one side plate to the other and being secured thereto, said concave bars having discharge spaces therebetween to accommodate downward movement of threshed crop material, a removable shelf located beneath the front part of said grate structure and spaced beneath the lower edges of said concave bars for blocking downward movement of threshed crop material at said front part, means for removably supporting said shelf, said casing including side walls, and a door in at least one side wall located to provide access to said shelf for removing said shelf from said support means.
Claim 8
Dependent Claim
138 words
In a combine having a threshing cylinder, and a casing enclosing said threshing cylinder, the combination of a concave located beneath said threshing cylinder within said casing, said concave comprising a grate structure having spaced side plates, a plurality of concave bars extending from one side plate to the other and being secured thereto, said concave bars having discharge spaces therebetween to accommodate downward movement of threshed crop material, a removable shelf located beneath the front part of said grate structure and spaced beneath the lower edges of said concave bars for blocking downward movement of threshed crop material at said front part, means for removably supporting said shelf, said casing including side walls, and a door in at least one side wall located to provide access to said shelf for removing said shelf from said support means.
Claim 9
Dependent Claim
31 words
A combine as claimed in claim 5 which includes locating means to maintain said shelf at the front part of said grate structure so that it underlies the front portion thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |