Precision-type single-seed pneumatic planter
First Claim
1. A pneumatic precision-type single-seed planter comprising:
- a seed container including an inlet through which seeds can be loaded in the planter and an outlet through which the seeds are discharged;
a suction housing mounted to said seed container, said suction housing having an opening therein through which air can be evacuated to create suction in the planter;
a disk having two sides and rotatably supported in the planter, one side of said disk facing the interior of said suction housing and the other side of said disk facing the interior of said seed container, and said disk having a series of elongate perforations of a narrow width extending therethrough adjacent the outer periphery of the disk; and
a selector element disposed at the side of the disk facing the interior of said seed container and located at the periphery of the disk, said selector element having an edge defining a plurality of slots and a plurality of projections terminating at sharp points between said slots, said slots and projections collectively forming a series of ridges directly behind which said elongate perforations pass as said disk is rotated such that the area of each said perforation of the disk that is exposed to the interior of said seed container is reduced by said ridges as the perforation travels past said selector element upon rotation of said disk, whereby said selector element can throttle suction effected in each said perforation via the interior of said suction housing in such a manner as to allow only a single seed to be held on said disk under suction at each said perforation which has been rotated past said selector element.
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Accused Products
Abstract
A precision-type single-seed planter has seed distributor in the form of a disk provided with elongate perforations of a narrow width, which cooperate with a seed container and an air suction device. Because the perforations in the disk have an elongate shape and a small cross section even large seeds can be held on the disk by suction at each of the perforations whereas smaller seeds will also be held without being able to pass through the perforations. A selector element cooperates with the disk by throttling the suction effected on the seeds through the perforations so that only individual ones of the seeds, particularly the smaller seeds, are adhered at each perforation. An optimum seed separation and single-seed distribution effect is thus achieved, regardless of the size and shape of the seeds.
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Citations
8 Claims
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1. A pneumatic precision-type single-seed planter comprising:
- a seed container including an inlet through which seeds can be loaded in the planter and an outlet through which the seeds are discharged;
a suction housing mounted to said seed container, said suction housing having an opening therein through which air can be evacuated to create suction in the planter;
a disk having two sides and rotatably supported in the planter, one side of said disk facing the interior of said suction housing and the other side of said disk facing the interior of said seed container, and said disk having a series of elongate perforations of a narrow width extending therethrough adjacent the outer periphery of the disk; and
a selector element disposed at the side of the disk facing the interior of said seed container and located at the periphery of the disk, said selector element having an edge defining a plurality of slots and a plurality of projections terminating at sharp points between said slots, said slots and projections collectively forming a series of ridges directly behind which said elongate perforations pass as said disk is rotated such that the area of each said perforation of the disk that is exposed to the interior of said seed container is reduced by said ridges as the perforation travels past said selector element upon rotation of said disk, whereby said selector element can throttle suction effected in each said perforation via the interior of said suction housing in such a manner as to allow only a single seed to be held on said disk under suction at each said perforation which has been rotated past said selector element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- a seed container including an inlet through which seeds can be loaded in the planter and an outlet through which the seeds are discharged;
Specification