Seed drill apparatus
First Claim
1. A seed drill apparatus comprising an inlet manifold for connection with a seed supply means;
- a seed collector wheel rotatably mounted in a casing and including a plurality of seed receiving cavities in spaced location around the periphery thereof, a portion of the periphery of said collector wheel lying adjacent said manifold whereby each cavity may receive a seed;
a seed distributor wheel rotatably mounted in said casing adjacent and beneath said collector wheel, a gap in the casing defining a seed transfer aperture between said collector wheel and said distributor wheel, said distributor wheel including a peripheral groove to receive a seed dropping through said transfer aperture from a cavity in said collector wheel and to transfer said seed to a seed release outlet beneath said distributor wheel, the groove having therein one or more abutment stops;
seed retardation means being located in the casing operatively engaging said groove to bring a seed into contact with the stop prior to release at the outlet.
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Accused Products
Abstract
A speed drill apparatus has a seed storage box SB with seed inlet manifold 2 to convey seeds to a rotatable collector wheel 5 having a number of peripheral seed receiving cavities 6. The seeds are ejected singly, assisted by a blade edge 11 running in a groove 5a joining the centers of the cavities, through an aperture B in casing 1 to fall into a groove 8 around the periphery of a distributor wheel 7. The groove 8 is subdivided by stops 9 into arcuate sectors each of which receives a seed. A retardation device 12 catches a seed in the groove 8 and holds same until carried on by a stop 9. The seed falls to the ground through outlet 13. The wheel 7 has a peripheral speed equal to the linear speed of motion over the ground and wheel 5 rotates more slowly with a reduction dependent on the ratio between the number of cavities 6 and number of stops 9. The retardation device 12 ensures accuracy of spacing by providing for discharge of each seed only when in abutment with a stop 9.
17 Citations
12 Claims
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1. A seed drill apparatus comprising an inlet manifold for connection with a seed supply means;
- a seed collector wheel rotatably mounted in a casing and including a plurality of seed receiving cavities in spaced location around the periphery thereof, a portion of the periphery of said collector wheel lying adjacent said manifold whereby each cavity may receive a seed;
a seed distributor wheel rotatably mounted in said casing adjacent and beneath said collector wheel, a gap in the casing defining a seed transfer aperture between said collector wheel and said distributor wheel, said distributor wheel including a peripheral groove to receive a seed dropping through said transfer aperture from a cavity in said collector wheel and to transfer said seed to a seed release outlet beneath said distributor wheel, the groove having therein one or more abutment stops;
seed retardation means being located in the casing operatively engaging said groove to bring a seed into contact with the stop prior to release at the outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a seed collector wheel rotatably mounted in a casing and including a plurality of seed receiving cavities in spaced location around the periphery thereof, a portion of the periphery of said collector wheel lying adjacent said manifold whereby each cavity may receive a seed;
Specification