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US 5,797,460 AGranted
Straight bar tillage implement
AssigneeDeere & Company
InventorsPaul David Parker, Jason Daniel Wattonville
Life of this patent
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AssigneeDeere & Company
InventorsPaul David Parker, Jason Daniel Wattonville
Estimating the term…
A tillage implement includes straight bar ripper structure with a main forward toolbar supporting subsoiler shanks from special brackets which can also support coulters ahead of the shanks independently of additional toolbar structure. An optional rear or secondary toolbar is attached by four-bar linkages to the main toolbar. The four-bar linkages allow the operator to adjust the height of the secondary toolbar relative to the main toolbar to accommodate changes in the operating depth of the rippers. The linkages may also be released to allow the secondary toolbar to float relative to the main toolbar. The secondary toolbar accommodates different attachments behind the rippers, such as disk bedders, lister bedders and strip till rigs which can operate at optimum attack angles and penetration regardless of the operating depth of the ripper. The strip till rig includes coulters and a rolling basket supported from the secondary frame by a four bar linkage so the attack angle and the relative operating height of the coulters and rolling basket remain constant as the rig floats throughout the entire vertical range of the rig. The combination of the adjustable secondary toolbar and the four-bar linkage on the rig provides versatility for different soil conditions and different tool and rig operating depths. Transversely adjustable brackets on the main and secondary toolbars help accommodate different tool spacings.
A tillage implement having a transversely extending main frame tube adapted for forward movement over the ground, a strip tillage device connected to the main frame tube, the strip tillage device including:
A tillage implement having a main toolbar connected to hitch structure and adapted for forward movement over the ground, the main toolbar including forward and rearward faces and top and bottom walls connecting the faces, a tillage tool assembly connected to the main toolbar, at least two four-bar linkage structures having forward ends including forward bracket structure connected to the main toolbar adjacent the rearward face and transversely adjustable along the main toolbar independently of the tillage tool assembly, the forward bracket structure supporting the linkage structures at locations offset transversely from the tillage tool assembly, the four-bar linkage structures including aft ends, a secondary toolbar connected to the aft ends of the linkage structures, and height adjusting structure connected to the four-bar linkage structures for varying the relative vertical location of the secondary toolbar relative to the main toolbar.
A tillage implement having a main toolbar connected to hitch structure and adapted for forward movement over the ground, the main toolbar including forward and rearward faces and top and bottom walls connecting the faces, a tillage tool assembly connected to the main toolbar, at least two four-bar linkage structures having forward ends connected to the main toolbar and transversely adjustable along the main toolbar, the four-bar linkage structures including aft ends, a secondary toolbar connected to the aft ends of the linkages, height adjusting structure connected to the four-bar linkages for varying the relative vertical location of the secondary toolbar relative to the main toolbar, and further comprising a rear four-bar linkage connected to the secondary toolbar, and tillage tool structure connected to the rear four-bar linkage and rockable vertically therewith relative to the secondary toolbar, the rear four-bar linkage maintaining a substantially constant angle of the tillage structure relative to the ground as the tillage tool structure rocks vertically with the rear four-bar linkage.
Dependencies are inferred from the claim text.