Seed meter and accelerator

Details Seed meter and accelerator Seed meter and accelerator

A - Human Necessities

01

C

A01C 7/12 (2006.01) A01C 7/04 (2006.01)

Patent

CA 2351458

A seed meter and accelerator comprises a stationary housing, a stationary axially extending dispensing rim, a radially extending flange and a rotating disc. The stationary housing is provided with an axially extending metering rim. The metering rim is provided with a metering gap. The stationary axially extending dispensing rim is located radially outward from the metering rim and is provided with a dispensing gap. The radially extending flange extends between the axially extending metering rim and the axially extending dispensing rim. The rotating disc is provided with an inner portion having circumferentially arranged seed pockets and an outer portion having seed dispensing openings. Each seed pocket corresponds to a seed dispensing opening. Passages extend between the seed pockets and the seed dispensing openings. The seed pockets of the inner portion are located adjacent to and radially inward from the metering rim. The seed dispensing openings are located adjacent to and radially inward from the dispensing rim. A source of air pressure pressurizes the stationary housing driving seeds into the seed pockets. When a seed pocket is registered with the metering gap the air pressure and centrifugal force drive the seed outwardly through the passage to the seed dispensing opening. At the opening the seed is held in place by the air pressure and the centrifugal force of the rotating disc until it reaches the seed dispensing gap. As the seed is released from the seed dispensing gap it proceeds into the seed furrow.

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