초록 ▼

A clevis-shaped bracket including an A-frame is adapted for attachment to the three point hitch of a tractor. A roller supporting frame is mounted within the bracket for articulated movement about the vertical axis of a pivot located within the hitch supported bracket to provide a short turning radi

A clevis-shaped bracket including an A-frame is adapted for attachment to the three point hitch of a tractor. A roller supporting frame is mounted within the bracket for articulated movement about the vertical axis of a pivot located within the hitch supported bracket to provide a short turning radius for tractor and attachment. The roller equipped frame includes a walled structure which serves as a water tank. A hydraulic cylinder is disposed intermediate the tractor hitch bar and the attachment in an inclined manner to bias the attachment downwardly to increase ground pressure. An adjustable frame is provided with telescopic beam members to mount rollers of increased length or other ground bearing instrumentalities.

대표청구항 ▼

1. A roller attachment for articulated attachment to a tractor of the type having a vertically positionable three point hitch, said attachment comprising, a bracket including an upright frame, said bracket adapted for pivotal attachment to the trailing ends of the tractor's three point hitch compo

1. A roller attachment for articulated attachment to a tractor of the type having a vertically positionable three point hitch, said attachment comprising, a bracket including an upright frame, said bracket adapted for pivotal attachment to the trailing ends of the tractor's three point hitch components, said bracket having upper and lower rearwardly directed parallel plates, a roller frame and roller carried by said bracket and normally extending transversely of the path of tractor travel, said roller frame including a box beam disposed for a portion of its length between said parallel plates and against which portion vertically orientated forces may be imparted to the roller frame by said bracket, pivot means carried by said bracket coupling said box beam to said bracket between said plates to permit box beam swinging movement about said pivot means and relative to said bracket during turning of the tractor whereby swinging of the roller frame and roller in a direction opposite to the tractor turning direction is avoided, and said roller frame additionally including extensible members positionable and lockable axially of the box beam, side members affixed to the outer ends of the extensible members, coupling means intermediate the ends of said roller and each of said side members to permit convenient roller removal and substitution of a roller of different length subsequent to axial adjustment of said extensible members. 2. The roller attachment claimed in claim 1 wherein said roller frame is of walled structure to constitute a water tank to provide a water supply for application to roller surfaces, nozzles supported by said roller frame in discharging relationship with the roller to apply water thereto. 3. The roller attachment claimed in claim 1 wherein said upright frame of the bracket includes a first clevis at its upper end for reception of the end of a hydraulic cylinder piston rod of a tractor carried hydraulic cylinder, extension of said piston rod by the cylinder causing said bracket and roller frame and roller to be downwardly biased toward the ground surface. 4. The roller attachment claimed in claim 3 wherein said upright frame additionally includes a second clevis for reception of a tractor three point hitch control arm. 5. The roller attachment claimed in claim 1 wherein said roller frame includes forwardly directed flange means disposed within said bracket, said pivot means disposed in inserted engagement with the bracket plates and said roller frame flange means. 6. The roller attachment claimed in claim 1 wherein said side members each define an elongate opening, said coupling means including bosses slidably positionable within each side member opening and locking pins insertable within each of said bosses.