A method of manufacturing an agricultural tillage disk blade includes providing a substantially circular-shaped disk body with an outer peripheral edge and a central opening that defines a rotation axis, the outer body being disposed within a first plane. A plurality of waves is formed in a predetermined pattern in the outer peripheral edge of the disk body, and the outer peripheral edge is sharpened to form a plurality of teeth such that at least a portion of the sharpened outer peripheral edge is disposed within a second plane that is parallel to the first plane and substantially perpendicular to the rotation axis. The method also includes machining a plurality of relief portions in each of the plurality of waves at a location radially inward of the plurality of teeth, and heat treating the disk body after the sharpening and machining steps.

A method of manufacturing an agricultural tillage disk blade includes providing a substantially circular-shaped disk body with an outer peripheral edge and a central opening that defines a rotation axis, the outer body being disposed within a first plane. A plurality of waves is formed in a predetermined pattern in the outer peripheral edge of the disk body, and the outer peripheral edge is sharpened to form a plurality of teeth such that at least a portion of the sharpened outer peripheral edge is disposed within a second plane that is parallel to the first plane and substantially perpendicular to the rotation axis. The method also includes machining a plurality of relief portions in each of the plurality of waves at a location radially inward of the plurality of teeth, and heat treating the disk body after the sharpening and machining steps.

A disk blade having a circular blade body of a first base material of a first hardness and having top and a bottom surfaces and an outer edge extending around the blade body. At least one clad bead extends circumferentially about the blade body on the bottom surface adjacent the outer edge of a second hardness greater than the first hardness of the base material. Various bead patterns are possible.

A disk blade having a circular blade body of a first base material of a first hardness and having top and a bottom surfaces and an outer edge extending around the blade body. At least one clad bead extends circumferentially about the blade body on the bottom surface adjacent the outer edge of a second hardness greater than the first hardness of the base material. Various bead patterns are possible.

A link assembly (3) and system (203) including a first link portion (7, 207) and a second link portion (9, 209). The first link portion (7, 207) includes a bulbous end (13). The second link portion (9, 209 a socket (15). To link adjacent link assemblies (3) or the first link portion (7, 207) to the second link portion (9, 209), the bulbous end (13) is received in the socket (15). In one example, the link assembly (3) is part of an agricultural ground engaging chain (1) having harrow member portions (5). In other examples, the link assembly and system (203) are used to link first element (204) and second elements (206) to one another. This may be used to join or anchor vehicles, structures and the like.

A system for adjusting the spacing between ground engaging tools of an agricultural implement may include a plurality of ground engaging tools including a first end tool, a second end tool, and at least one intermediate tool positioned between the first and second end tools, with an adjustable ground engaging width being defined between the first and second end tools. The system may further include a biasing element positioned between each respective pair of adjacent engaging tools and configured to apply a biasing force against its respective pair of adjacent tools such that an inter-tool spacing between each respective pair of adjacent tools is maintained substantially uniform across the plurality of ground engaging tools as the ground engaging width is adjusted.

An extended highspeed rigid hub (EHRH) combined with a specific double roller taper bearing and tapered head bolt coupled with a coulter blade create a coulter blade assembly of great strength which functions to minimize flex at the circumference of the coulter blade. The EHRH maintains inner as well as outer bosses which support both inner and outer attachment points for the taper headed bolts to provide rigidity to the coulter blade. The double roller taper bearing adds to the rigidity equation by mitigating axial as well as radial forces exerted on the coulter blade. The coulter blade assembly, when coupled as one element to an implement, creates a rigid furrowing device capable of precise furrow construction in many challenging soil conditions.

The present invention provides a tillage point having a ground engaging structure configured to adjust with respect to the ground so that the tillage point can flexibly adapt to various field conditions. The ground engaging structure can comprise wings for increasing soil fracture below the ground surface and/or a cover board for moving soil along the ground surface. The ground engaging structure can variably adjust using an actuator, such as a hydraulic cylinder, connected to linkage which can move the ground engaging structure through multiple angles about a pivot point during tillage operations. In addition, a controller can adjust the actuator to maintain an angle of the ground engaging structure according to a location on a prescription map.

The present invention provides a tillage point having a ground engaging structure configured to adjust with respect to the ground so that the tillage point can flexibly adapt to various field conditions. The ground engaging structure can comprise wings for increasing soil fracture below the ground surface and/or a cover board for moving soil along the ground surface. The ground engaging structure can variably adjust using an actuator, such as a hydraulic cylinder, connected to linkage which can move the ground engaging structure through multiple angles about a pivot point during tillage operations. In addition, a controller can adjust the actuator to maintain an angle of the ground engaging structure according to a location on a prescription map.

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.