A tillage implement has a main frame towed in a forward working direction and toolbar assemblies supported on the main frame. Each assembly has an elongate toolbar member transverse to the forward working direction with tillage units spaced along the toolbar member for working the ground. A pivot supports each toolbar at an intermediate location on the toolbar for angular adjustment about an upright axis relative to the main frame. Followers at opposing ends of each toolbar member are received in respective guides at fixed locations on the main frame such that the followers are slidable within the guides in the forward working direction while restricting rotation of the toolbar member about a longitudinal axis of the toolbar member relative to the main frame. Angular position of each toolbar is controlled by an actuator with an attached mechanical indicator that can be read by an operator.

An agricultural implement includes a plurality of ground-engaging tools configured to modify a surface configuration of an agricultural field and a hydraulically-controlled subsystem configured to modify an operating angle of the plurality of ground-engaging tools. The agricultural implement also includes a sensor coupled to the hydraulically-controlled subsystem configured to generate sensor signals indicative of a current operating angle of the plurality of ground-engaging tools. The agricultural implement also includes an implement control system configured to receive the sensor signals from the sensor to determine the current operating angle of the plurality of ground-engaging tools, and, upon determining the current operating angle is to be changed to a new operating angle, generate control signals for the hydraulically-controlled subsystem to modify the operating angle of the plurality of ground-engaging tools from the current operating angle to the new operating angle.

A tillage machine includes a main frame, a gang rotatably coupled to the main frame, and an arcuately-shaped adjustment rail coupled to the main frame. At least a portion of the adjustment rail is spaced from the main frame. The adjustment rail includes a plurality of apertures each configured to receive a locking structure, and the adjustment rail defines an open space adjacent the main frame.

An apparatus and system for adjustably controlling the position and depth of row cleaner wheels in no-till planting applications, the apparatus comprising a frame, a piston movably secured at the top to the frame, first and second sets of parallel arms disposed on either side of the piston and movably secured at one end to the frame and at the other end to a hub stem, and a set of piston arms each movably secured at the top to one of the first or second set of parallel arms and at the other end to the bottom of the piston.

By providing a linear actuator in communication with a slide bar disposed in a channel, and by configuring multiple bars of a harrow to achieve an angle of rotation defined by the slide bar, the angle of rotation for smoothing tools of the harrow may be precisely controlled by the linear actuator. As a result, an infinite range of downward angles may be available for the smoothing tools for achieving various effects with the soil.

An agricultural implement includes a plurality of ground-engaging tools configured to modify a surface configuration of an agricultural field and a hydraulically-controlled subsystem configured to modify an operating angle of the plurality of ground-engaging tools. The agricultural implement also includes a sensor coupled to the hydraulically-controlled subsystem configured to generate sensor signals indicative of a current operating angle of the plurality of ground-engaging tools. The agricultural implement also includes an implement control system configured to receive the sensor signals from the sensor to determine the current operating angle of the plurality of ground-engaging tools, and, upon determining the current operating angle is to be changed to a new operating angle, generate control signals for the hydraulically-controlled subsystem to modify the operating angle of the plurality of ground-engaging tools from the current operating angle to the new operating angle.

A disc conditioner to work soil in a forward direction including a main support structure, a secondary support structure that protrudes from the main support structure in the forward direction, a main disc assembly affixed to the main support structure, and a secondary disc assembly that is affixed to the secondary support structure and protrudes from the main disc assembly in the forward direction. The secondary disc assembly generates an oscillating soil and residue flow along a central axis of the disc conditioner that levels the soil.

By providing a linear actuator in communication with a slide bar disposed in a channel, and by configuring multiple bars of a harrow to achieve an angle of rotation defined by the slide bar, the angle of rotation for smoothing tools of the harrow may be precisely controlled by the linear actuator. As a result, an infinite range of downward angles may be available for the smoothing tools for achieving various effects with the soil.

Presently described is a device (1) for adjusting the angle of disc sections for agricultural harrows which comprises at least one articulation element (10) configured to be pivotally attached to a beam (200) of an agricultural harrow (2), the articulation element (10) being configured to be pivotally attached to an adjustment shaft (20), thus allowing the angular adjustment of the beams of the agricultural harrow sections in both a horizontal plane and a vertical/transverse plane, comprising simple construction when compared to solutions existing in the prior art, making use of few components to allow both adjustments, and providing simple, practical and fast operation, requiring few manipulation steps.

A mechanical coupling arrangement for interconnecting a compression spring assembly and certain working tools such as the disks of an agricultural tillage implement includes a hinge having a pivot axis and first and second arms extending from the pivot axis. Linkage arrangements couple the first hinge arm to the spring assembly and the second hinge arm to the working tools. A shear pin extends between the hinge arms remote from the pivot axis for fixing the angular relationship between the arms so long as the spring compression remains less than a predetermined maximum. Shear pin failure allows one hinge arm to pivot relative to the other when the predetermined maximum tension is exceeded uncoupling the spring assembly from the tools.