US3923206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seed separator with adjustment for different seed sizes
Assignee: STANHAY ASHFORD Ltd
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Filing: 1973-09-13
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Granted: 1975-12-02
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Expires: 1993-09-13
Abstract
Abstract Seed spacing means wherein a single row or plurality of rows of spaced apart seed may be sown with pre-determined spacing along said rows and when sowing a plurality of rows per single run. Pre-determined spacing is provided between the rows and a plurality of seed spacing means may be coupled in side by side relationship or in tandem array to increase the area of coverage per single run, the seed being sown at regular pre-selectable depths.
Inventors
- 👤 David Gillies
- 👤 Robert Anthony Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:21
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
154 words
Seed spacing means comprising a seed container operatively connected so as to feed seed to a seed chamber, the chamber having an endless seed conveyor passing therethrough from front to rear in direction of motion, at least one row of longitudinally spaced apertures in the seed conveyor forming cavities for the retention of seed when passing over and upon a spring base means located beneath said conveyor, rotatable seed rejection means rotating in a direction opposite to that of said seed conveyor for ejection of excess seed, the space relationship between the spring base and seed conveyor being such that the seed remains within said cavities and does not project above the surface of said seed conveyor, means at the end of said spring base means through which said seed is discharged from said seed chamber, said seed spacing means being located upon an elongated support framework towably mounted on front and rear wheels.
Claim 2
Dependent Claim
154 words
Seed spacing means comprising a seed container operatively connected so as to feed seed to a seed chamber, the chamber having an endless seed conveyor passing therethrough from front to rear in direction of motion, at least one row of longitudinally spaced apertures in the seed conveyor forming cavities for the retention of seed when passing over and upon a spring base means located beneath said conveyor, rotatable seed rejection means rotating in a direction opposite to that of said seed conveyor for ejection of excess seed, the space relationship between the spring base and seed conveyor being such that the seed remains within said cavities and does not project above the surface of said seed conveyor, means at the end of said spring base means through which said seed is discharged from said seed chamber, said seed spacing means being located upon an elongated support framework towably mounted on front and rear wheels.
Claim 3
Dependent Claim
24 words
The seed spacing means of claim 1 wherein the spring base means contains at least one longitudinal groove operatively aligned with said spaced apertures.
References Cited (Backward Citations)
US288080A
Cited
US1264454A
Cited
US1614378A
Cited
US1761065A
Cited
US2770400A
Cited
US3279658A
Cited
US3272159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |