Patent US3608787A successfully refreshed from Google Patents.
US3608787A
Expired / Lapsed
US
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Device for eliminating double seeds in distributors for sowing machines
Assignee: Nodet Gougis SA
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Filing: 1969-06-16
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Granted: 1971-09-28
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Expires: 1989-06-16
Abstract
Abstract The present invention relates to a device for eliminating double seeds or seed clusters in distributor for sowing machines. The object of the invention is a device constituted by a selector plate which is applied against the rotary disc provided with seed suction holes and which is cut out on one of its edges, so as to form a series of hollow and projecting points constituting a succession of fixed contact points situated tangentially in relation to the trajectory of the conglomerated packets or clusters of seeds near the suction holes, these fixed points having the effect of turning each conglomeration of seeds around and/or over said holes and, through their dissociative contact, effecting the elimination of all double seeds or additional seeds situated around each of the suction holes.
Inventors
- 👤 Xavier Roger Grataloup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:19
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/04; A01C7/042; A01C7/044; A01C7/0443; A01C7/046
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A device for eliminating seed clusters in single-seed distributors for sowing machines including a seed box, a suction box adjacent thereto, and a rotary disc separating the suction box from the seed box and provided with a row of perforations smaller than the seeds to be sown, the said device comprising a selector plate mounted adjacent to the rotary disc and having on one of its edges a series of hollows and projections constituting a succession of fixed contact points placed tangentially in relation to the path of seed clusters held by suction on the said perforations, said fixed contact points being arranged to disintegrate the clusters by rotating them on said perforations so that only one seed is distributed.
Claim 2
Independent Claim
120 words
A device for eliminating seed clusters in single-seed distributors for sowing machines including a seed box, a suction box adjacent thereto, and a rotary disc separating the suction box from the seed box and provided with a row of perforations smaller than the seeds to be sown, the said device comprising a selector plate mounted adjacent to the rotary disc and having on one of its edges a series of hollows and projections constituting a succession of fixed contact points placed tangentially in relation to the path of seed clusters held by suction on the said perforations, said fixed contact points being arranged to disintegrate the clusters by rotating them on said perforations so that only one seed is distributed.
Claim 3
Dependent Claim
54 words
A device according to claim 1, in which the fixed contact points of the selector plate are constituted by saw teeth distributed over an arc of a circle the radius of which is substantially equal to that of the circumference on which are situated the centers of the perforations formed in the rotary disc.
Claim 4
Dependent Claim
52 words
A device according to claim 1, in which the fixed contact points of the selector plate are constituted by a plurality of inclined planes set in a position to gradually partly cover the perforations as they approach the selector plate, each inclined plane terminating in a face transverse to the said path.
Claim 5
Dependent Claim
26 words
A device according to claim 1, in which the fixed contact points of the selector plate are constituted by inclined planes each provided with saw teeth.
Claim 6
Dependent Claim
64 words
A device according to claim 1, in which the selector plate is pivotally mounted and its distance from the said path is adapted to be adjusted to a value compatible with the size of the seeds to be sown by means of an eccentric adjusting system that includes a control lever movable over and adapted to be locked with respect to a graduated scale.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |