Patent US2382970A successfully refreshed from Google Patents.
Patent US3670670A successfully refreshed from Google Patents.
US3670670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Harrows
Assignee: LANDBOUWWERKTUIGENEN MAS FAB H
•
Filing: 1970-06-05
•
Granted: 1972-06-20
•
Expires: 1990-06-05
Abstract
Abstract The invention relates to a harrow having one or more transversely reciprocating teeth carrying beams and further having a device for sowing seeds. The teeth of said reciprocating harrow beam or beams are each provided or united with a channel extending longitudinal of the tooth and said channel at its upper end is connected to a seed supply and has at or near its lower end an outlet.
Inventors
- 👤 Herbert Vissers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:54
CPC Classifications
A; A01; A01B; A01B23/00; A01B23/02; A01B25/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
245 words
Apparatus for sowing seed in buried condition at a substantially uniform and selected depth below the ground surface and in zig-zag row pattern, said apparatus comprising, in combination: a frame adapted to be moved over the ground surface along a selected path; means for supporting said frame at a selected level above the ground surface as it is moved along said path; a plurality of teeth carried by said frame and depending therefrom to distances greater than said selected level whereby tip portions of said teeth project into the ground, each of said teeth having a rearwardly directed seed discharge opening in its tip portion and all of said seed discharge opening being located in a substantially common horizontal plane located at said selected depth at which seed is to be buried, each tooth also having a seed-guiding channel therein leading downwardly to a corresponding seed discharge opening; seed supply means carried by said frame above said teeth and including seed guiding means communicating with upper portions of said channels Whereby seed flows by gravity from said seed supply means, through said channels and out through said seed discharge openings at said selected depth; and drive means for moving said teeth back and for transverse to said path as said frame is moved along such path so that (1) seed is sown in zig-zag row pattern at said selected depth and (2) the ground soil automatically fills in and buries seed at said selected depth.
Claim 2
Dependent Claim
245 words
Apparatus for sowing seed in buried condition at a substantially uniform and selected depth below the ground surface and in zig-zag row pattern, said apparatus comprising, in combination: a frame adapted to be moved over the ground surface along a selected path; means for supporting said frame at a selected level above the ground surface as it is moved along said path; a plurality of teeth carried by said frame and depending therefrom to distances greater than said selected level whereby tip portions of said teeth project into the ground, each of said teeth having a rearwardly directed seed discharge opening in its tip portion and all of said seed discharge opening being located in a substantially common horizontal plane located at said selected depth at which seed is to be buried, each tooth also having a seed-guiding channel therein leading downwardly to a corresponding seed discharge opening; seed supply means carried by said frame above said teeth and including seed guiding means communicating with upper portions of said channels Whereby seed flows by gravity from said seed supply means, through said channels and out through said seed discharge openings at said selected depth; and drive means for moving said teeth back and for transverse to said path as said frame is moved along such path so that (1) seed is sown in zig-zag row pattern at said selected depth and (2) the ground soil automatically fills in and buries seed at said selected depth.
Claim 3
Dependent Claim
25 words
Sowing apparatus as defined in claim 1 wherein each of said teeth is connected to an individual distributing means operatively associated with said seed supply.
Claim 4
Dependent Claim
26 words
Sowing apparatus as defined in claim 1 including a rubbing plate supported by said frame adjacent said teeth and being located above the seed outlets thereof.
Claim 5
Dependent Claim
23 words
Sowing apparatus as defined in claim 3 wherein said rubbing plate is vertically adjustable with respect to the seed outlets of said teeth.
Claim 6
Dependent Claim
93 words
Apparatus as defined in claim 1 including a plurality of transversely extending beams provided in spaced generally parallel relationship with one another and being movably supported by said frame, each of said beams carrying depending teeth, said drive means being adapted to transversely reciprocate said beams, said beams including a leading beam which is forwardmost of said beams and a trailing beam disposed rearwardly of said forwardmost beam in relation to said path along which the frame is adapted to move, said teeth including means defining channels being carried by said trailing beam.
Claim 7
Dependent Claim
165 words
A harrow comprising a frame, a plurality of transversely extending teeth carrying beams provided in spaced generally parallel relationship with one another and movably supported by the frame, each of said beams carrying depending teeth, drive means supported by the frame and operatively connected to said beams for transversely reciprocating said beams, said harrow being movable in a direction so as to define a leading beam which is forwardmost of said beams and a trailing beam disposed rearwardly of said forwardmost beam, the teeth of said trailing beam each including means defining a channel extending longitudinally of the associated tooth, a seed supply supported by said frame and being connected with an upper portion of each of said channels, each of said channels defining an outlet at the lower end thereof for sowing seeds, a rubbing plate being supported by said trailing beam, said plate being located above the outlets of said channels, said rubbing plate being provided with teeth on the rear side thereof.
Claim 8
Dependent Claim
165 words
A harrow comprising a frame, a plurality of transversely extending teeth carrying beams provided in spaced generally parallel relationship with one another and movably supported by the frame, each of said beams carrying depending teeth, drive means supported by the frame and operatively connected to said beams for transversely reciprocating said beams, said harrow being movable in a direction so as to define a leading beam which is forwardmost of said beams and a trailing beam disposed rearwardly of said forwardmost beam, the teeth of said trailing beam each including means defining a channel extending longitudinally of the associated tooth, a seed supply supported by said frame and being connected with an upper portion of each of said channels, each of said channels defining an outlet at the lower end thereof for sowing seeds, a rubbing plate being supported by said trailing beam, said plate being located above the outlets of said channels, said rubbing plate being provided with teeth on the rear side thereof.
Claim 9
Dependent Claim
30 words
A harrow as claimed in claim 6 wherein said plate includes a central generally planar portion, said teeth being directed obliquely to the rear with respect to said planar portion.
Claim 10
Independent Claim
106 words
A method of sowing seeds comprising feeding seeds downwardly by gravity through channels associated with a plurality of teeth, said channels terminating in rearwardly facing seed outlets at their lower ends and being positioned beneath the surface of the ground, maintaining said seed outlets at a selected depth below the ground surface, moving said teeth through the ground in a forward direction while feeding said seeds downwardly by gravity, and simultaneously moving said teeth back and forth in a direction transverse to said forward direction to thereby sow seeds into the ground beneath the surface thereof in a generally zig-zag pattern and at said selected depth.
Claim 11
Independent Claim
106 words
A method of sowing seeds comprising feeding seeds downwardly by gravity through channels associated with a plurality of teeth, said channels terminating in rearwardly facing seed outlets at their lower ends and being positioned beneath the surface of the ground, maintaining said seed outlets at a selected depth below the ground surface, moving said teeth through the ground in a forward direction while feeding said seeds downwardly by gravity, and simultaneously moving said teeth back and forth in a direction transverse to said forward direction to thereby sow seeds into the ground beneath the surface thereof in a generally zig-zag pattern and at said selected depth.
References Cited (Backward Citations)
US147874A
Cited
US965200A
Cited
DE419620C
Cited
US2658463A
Cited
US3177828A
Cited
US3186495A
Cited
GB1091104A
Cited
US3413940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |