Means for agricultural seeding

Claim 2

In apparatus for preparing and seeding ground including a frame assembly, a seedbox mounted on said frame assembly, a plurality of discs for cutting slits in the ground mounted on said frame assembly for rotation about generally transverse axes, tubes for delivering seeds from said seedbox to said slits and at least one roller mounted on said frame assembly rearwardly of said disc for rotation about a transverse axis being adapted to compact the ground and close slits after seed has been implanted therein, the improvement wherein said frame assembly comprises first and second frames relatively movable in a vertical plane, said first frame comprising a drawbar for connection to a towing vehicle, a plurality of spaced substantially parallel longitudinally extending arm assemblies carrying said disc and mounted on said second frame below said first and second frames, connections between opposite ends of each arm assembly and opposite ends of said second frame, each arm assembly comprising a first arm having a forward end and a rear end, a second arm located rearwardly of said first arm and having a forward end and a rear end, and a pivotal connection connecting together said rear end of said first arm and said forward end of said second arm, resilient means urging said arm assemblies downwardly away from said second frame, an a resilient connection between said second frame and said drawbar by adjustment of which the loading on the apparatus applied to the disc can be varied to control penetration of the discs into the ground and the depth of the slits produced thereby.

Claim 3

In apparatus for preparing and seeding ground including a frame assembly, a seedbox mounted on said frame assembly, a plurality of discs for cutting slits in the ground mounted on said frame assembly for rotation about generally transverse axes, tubes for delivering seeds from said seedbox to said slits and at least one roller mounted on said frame assembly rearwardly of said discs for rotation about a transverse axis being adapted to compact the ground and close slits after seed have been implanted therein, the improvement wherein said frame assembly comprises first and second frames relatively movable in a vertical plane, said first frame comprising a drawbar for connection to a towing vehicle, a plurality of spaced substantially parallel longitudinally extending arm assemblies carrying said discs and each having a forward and a rear end, said arm assemblies being mounted on said second frame below said first and second frames, each arm assembly compRising a pair of arms, and a pivotal connection connecting together adjacent ends of said arms, resilient means urging said arm assemblies downwardly away from said second frame, said resilient means comprising a pair of spring loaded struts acting respectively between said second frame and said adjacent ends of said arms of each arm assembly, and between said second frame aNd said rear end of each arm assembly, and a resilient connection between said second frame and said drawbar by adjustment of which the loading on the apparatus applied to the discs can be varied to control penetration of the discs into the ground and the depth of the slits produced thereby.

Claim 4

In apparatus for preparing and seeding ground including a frame assembly, a seedbox mounted on said frame assembly, a plurality of discs for cutting slits in the ground mounted on said frame assembly for rotation about generally transverse axes, tubes for delivering seeds from said seedbox to said slits and at least one roller mounted on said frame assembly rearwardly of said discs for rotation about a transverse axis being adapted to compact the ground and close slits after seed have been implanted therein, the improvement wherein said frame assembly comprises first and second frames relatively movable in a vertical plane, said first frame comprising a drawbar for connection to a towing vehicle, a plurality of spaced substantially parallel longitudinally extending arm assemblies carrying said discs and each having a forward and a rear end, said arm assemblies being mounted on said second frame below said first and second frames, each arm assembly compRising a pair of arms, and a pivotal connection connecting together adjacent ends of said arms, resilient means urging said arm assemblies downwardly away from said second frame, said resilient means comprising a pair of spring loaded struts acting respectively between said second frame and said adjacent ends of said arms of each arm assembly, and between said second frame aNd said rear end of each arm assembly, and a resilient connection between said second frame and said drawbar by adjustment of which the loading on the apparatus applied to the discs can be varied to control penetration of the discs into the ground and the depth of the slits produced thereby.

Claim 5

Apparatus as claimed in claim 1, wherein each first arm carries a pair of discs and each second arm carries a pair of ground-compacting rollers.

Claim 6

Apparatus as claimed in claim 1, wherein each second arm carries a pair of discs and a pair of ground-compacting rollers, and said discs are located adjacent to forward end of said second arm and said rollers are located adjacent to said rear end of said second arm.

Claim 7

Apparatus as claimed in claim 1, wherein each arm assembly carries a pair of discs and a pair of ground-compacting rollers, said discs on adjacent arm assemblies being staggered longitudinally with respect to each other so that discs on alternate arm assemblies are aligned transversely.