Spring biased coupling member on a disk gang for driving engagement with a folding wing gang coupling member

Claim 1

In an agricultural implement having a main frame, at least one main disk gang supported by said frame and having a plurality of axially aligned rotatable disks for engagement with the ground, at least one wing disk gang having a plurality of axially aligned rotatable disks supported by said frame for movement between a first position wherein the wIng disks do not engage the ground and a second position wherein the axis of the wing gang disks is generally axially aligned with the axis of the main gang disks so that the wing disks engage the ground, and coupling means operatively associated with said main and wing disk gangs for effecting driving rotational movement therebetween, said coupling means comprising first and second coupling members each of which is secured in axial relation to one of the main and wing disk gangs, one of said coupling members including a conical truncated portion slidably supported on its associated disk wing along the axis of the associated rotatable disk and having a plurality of radial drive lugs, and the other of said coupling members having a truncated conical recess conforming to configuration of said conical truncated portion with a plurality of radial recesses conforming to the shape and spacing of said radial drive lugs, said first and second coupling members being cooperable upon said wing disk being moved to said second position to allow said conical truncated portion of said one member to seat into said conforming recesses of said other member to provide positive driving rotational coupling therebetween, said one coupling member further includes a coupler base having a base plate and a square drive shaft which is perpendicular to said base plate and which is axially aligned with and rotatable with the associated rotatable disks, said conical truncated portion being axially slidable on said square drive shaft and conjointly rotatable therewith, and a compression spring disposed about said square drive shaft and between said base plate and said conical truncated portion to allow sliding movement of said truncated portion when said first and second coupling members are brought into engaging relation with said drive lugs in rotational non-alignment with said radial recesses in said other of said coupling members.