Single grain sowing machine
First Claim
1. A single grain sowing machine comprising a housing, a seed container, a feeding wheel in the form of a disc rotatable within the housing about a substantially horizontal axis, said feeding wheel having a plurality of radially outwardly open cells spaced around its periphery that are also open on both sides of the cells, said feeding wheel and being of a thickness in the region of the cells no larger than the smaller diameter of the seed grains, said seed container delivering a plurality of seeds to a filling zone on one side of said feeding wheel, while the other side of the wheel is bounded by a wall of the housing whereby the cells receive individual seed grains at the filling zone, and rotation of the feeding wheel transports the seeds in the cells one at a time away from the filling zone to a transfer zone where the feeding wheel projects out of the housing, a sowing wheel also rotatable about a substantially horizontal axis transverse to the driving direction of the sowing machine that cooperates with the feeding wheel in the transfer zone to receive individual seed grains from the cells of the feeding wheel in an upper zone of the path of rotation of the sowing wheel and which discharges them into the soil in a lower zone, said sowing wheel being provided around its circumference with resilient clamping elements which define between each other a circumferentially extending gap that receives the peripherial portion of the feeding wheel in the transfer zone, said resilient elements exerting pressure toward each other to grip a seed in a cell of the feeding wheel as the wheels rotate and the feeding wheel passes through the gap to thereby remove the seeds one at a time from the cells, said clamping elements also being resilient in the radial direction so that as the sowing wheel rotates to the lower zone, the elements are pressed against the soil whereby the elements deform to release the seeds which are then pressed into the soil by the pressure of the sowing wheel.
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Accused Products
Abstract
In a single grain sowing machine, the seed grains (0) supplied out of the seed container (1) are separated by means of a feeding wheel (2). This feeding wheel (2) is covered up to a point where it leaves the housing (8). There is also a sowing wheel (4) which rolls on the ground and on the circumference of which there are means which engage the seed grains (0) that are already separated in the cells (7) of the feeding wheel (2) and transfer them out of the cells into the path of movement and the circumferential speed of the sowing wheel (4). The circumferentially measured spacing of the cells (7) of the feeding wheel (2) is to the circumferential spacing of the seed grains (0) held by the means of the sowing wheel (4) as is the ratio of the circumferential speeds of these two wheels. In the lower zone of the sowing wheel (4), the seed grains (0) are pressed into the soil and released (FIG. 1).
64 Citations
23 Claims
- 1. A single grain sowing machine comprising a housing, a seed container, a feeding wheel in the form of a disc rotatable within the housing about a substantially horizontal axis, said feeding wheel having a plurality of radially outwardly open cells spaced around its periphery that are also open on both sides of the cells, said feeding wheel and being of a thickness in the region of the cells no larger than the smaller diameter of the seed grains, said seed container delivering a plurality of seeds to a filling zone on one side of said feeding wheel, while the other side of the wheel is bounded by a wall of the housing whereby the cells receive individual seed grains at the filling zone, and rotation of the feeding wheel transports the seeds in the cells one at a time away from the filling zone to a transfer zone where the feeding wheel projects out of the housing, a sowing wheel also rotatable about a substantially horizontal axis transverse to the driving direction of the sowing machine that cooperates with the feeding wheel in the transfer zone to receive individual seed grains from the cells of the feeding wheel in an upper zone of the path of rotation of the sowing wheel and which discharges them into the soil in a lower zone, said sowing wheel being provided around its circumference with resilient clamping elements which define between each other a circumferentially extending gap that receives the peripherial portion of the feeding wheel in the transfer zone, said resilient elements exerting pressure toward each other to grip a seed in a cell of the feeding wheel as the wheels rotate and the feeding wheel passes through the gap to thereby remove the seeds one at a time from the cells, said clamping elements also being resilient in the radial direction so that as the sowing wheel rotates to the lower zone, the elements are pressed against the soil whereby the elements deform to release the seeds which are then pressed into the soil by the pressure of the sowing wheel.
Specification