Disc implement

Claim 1

A disc implement comprising a generally rectangular frame having a width dimension substantially Greater than the length dimension, and having sides and front and rear ends, a drawbar connected to said frame adjacent the front end thereof, a plurality of spaced apart elongate tool bar structures mounted on said frame and extending transversely of the frame and substantially normal to the length dimension of the frame, a plurality of elongate, vertically disposed spaced apart disc standards, and arranged in transverse rows with respect to said frame, means revolvably mounting each disc standard adjacent its upper end on one of said tool bar structures to permit revolving movement of each disc standard about its longitudinal vertically disposed axis, a plurality of earthworking concavo-convex discs each being mounted on one of said disc standards adjacent the lower end of the latter, each disc being movable with its associated disc standard to permit angular adjustment of the position of each disc, each disc being normally adjusted in an earthworking operation to dispose its axis of rotation in angular relation with respect to the longitudinal center line of the frame, the discs mounted on a tool bar structure and located on one side of the longitudinal center line of the frame, in an earth working operation, having their respective axes of rotation oppositely angled with respect to the axes of rotation of the discs located on the other side of the longitudinal center line of the frame, a plurality of motion transmitting links shiftably mounted on said frame for shifting movement relative thereto, each motion transmitted link positioned above and being connected with the disc standards mounted on a tool bar structure located on one side of the longitudinal center line of the frame, said links when shifted being operable to shift said disc standards about their longitudinal vertically oriented axes thereby selectively adjusting the respective angular positions of the axes of rotation of the discs with respect to the longitudinal center line of the frame, a pair of spaced apart actuating turntables revolvably mounted on said frame and each connecting a motion transmitting link for the disc standards located in a transverse row on one side of the longitudinal center line of the frame with a motion transmitting link for the disc standards in a transverse row located on the other side of the longitudinal center line of the frame, a pair of elongate connecting links each extending between and being connected with said actuating turntables, power means mounted on said frame and connected with said actuating turntables and being operable for rotating the same and simultaneously volving all of said disc standards, a pair of laterally spaced apart wheel assemblies each being positioned inwardly from the respective sides of the frame, each wheel assembly including a vertically disposed elongate wheel standard, means mounting each wheel standard on said frame for vertical translation relative to said frame between a lowered ground engaging position and an elevated position, said wheel standards when in an elevated position, positioning said discs in engagement with the ground, each wheel standard also being revolvable about its longitudinal vertically disposed axis through an arc of approximately 90* between first and second positions, said wheel assemblies when in the first position having their respective rotational axes disposed substantially normal to the length dimension of the frame, and when in said second position having their respective rotational axes disposed substantially normal to the width dimension of the implement frame, and means for releasably locking said wheel assemblies in said second position.