A land clearing attachment for a tractor device includes semi-helically oriented teeth, knives, or blades radially outward from an outer surface of a rotor. Each tooth, knife, or blade is part of a row of teeth, knives, or blades. Each row is oriented with an offset angle such that the spirally orientation completes angular offset of about 90° or less.

A land clearing attachment for a tractor device includes semi-helically oriented teeth, knives, or blades radially outward from an outer surface of a rotor. Each tooth, knife, or blade is part of a row of teeth, knives, or blades. Each row is oriented with an offset angle such that the spirally orientation completes angular offset of about 90° or less.

A field management machine includes a rack, a driver, a transmission, traveling wheels, a cutter, and a gear shift lever. A first shift fork controls gear shift of the cutter. A second shift fork controls gear shift of the traveling wheels. The gear shift lever includes a traveling gear shift lever and a cutter gear shift lever. The cutter gear shift lever is connected to the first shift fork. The traveling gear shift lever is connected to the second shift fork. The field management machine includes a trigger rod between the cutter gear shift lever and the traveling gear shift lever. The trigger rod is connected to the cutter gear shift lever or the traveling gear shift lever. The traveling gear shift lever pushes the trigger rod when the traveling gear shift lever is switched to a reverse gear to shift the cutter gear shift to a neutral gear.

A field management machine includes a rack, a driver, a transmission, traveling wheels, a cutter, and a gear shift lever. A first shift fork controls gear shift of the cutter. A second shift fork controls gear shift of the traveling wheels. The gear shift lever includes a traveling gear shift lever and a cutter gear shift lever. The cutter gear shift lever is connected to the first shift fork. The traveling gear shift lever is connected to the second shift fork. The field management machine includes a trigger rod between the cutter gear shift lever and the traveling gear shift lever. The trigger rod is connected to the cutter gear shift lever or the traveling gear shift lever. The traveling gear shift lever pushes the trigger rod when the traveling gear shift lever is switched to a reverse gear to shift the cutter gear shift to a neutral gear.

A tillage implement for variable tillage has a linkage mechanism disposed longitudinally between two gangs of annular harrow tools, the gangs each having a toolbar that is rotationally mounted on a frame of the implement. The linkage mechanism has a plurality of pivotally connected linkage arms, the toolbars each pivotally connected to at least one of the linkage arms. Operation of the linkage mechanism simultaneously rotates one toolbar about a first vertical rotation axis and the other toolbar about a second vertical rotation axis in an opposite rotational direction as the first toolbar. The implement has at least one wheel mounted on the frame longitudinally forward of both of the gangs or longitudinally rearward of both of the gangs. The tillage implement provides variable tillage while having a shorter frame to facilitate folding wing sections of the frame in a more compact manner for transportation while remaining assembled.

A tillage implement for variable tillage has a linkage mechanism disposed longitudinally between two gangs of annular harrow tools, the gangs each having a toolbar that is rotationally mounted on a frame of the implement. The linkage mechanism has a plurality of pivotally connected linkage arms, the toolbars each pivotally connected to at least one of the linkage arms. Operation of the linkage mechanism simultaneously rotates one toolbar about a first vertical rotation axis and the other toolbar about a second vertical rotation axis in an opposite rotational direction as the first toolbar. The implement has at least one wheel mounted on the frame longitudinally forward of both of the gangs or longitudinally rearward of both of the gangs. The tillage implement provides variable tillage while having a shorter frame to facilitate folding wing sections of the frame in a more compact manner for transportation while remaining assembled.

A sheath for a soil working roller (20) of a soil processing machine, said sheath is rotatable about a roller axis of rotation and comprises a plurality of sheath segments (40), mounted or mountable to surround a roller body (22) of the soil working roller (20) and following one another in the circumferential direction, wherein a plurality of roller tools (48) is arranged on an outer side of the sheath segments (40) positioned to be facing away from the roller body, wherein at least one part of the roller tools (48) comprise an interchangeable holder mounted on a respective sheath segment (48) and a replaceable tool detachably mounted or mountable on the interchangeable holder of the same, wherein a fastening opening is formed in the interchangeable holder for accommodating a fastening shaft of a replaceable tool mounted or to be mounted on the interchangeable holder, wherein a tool through opening (84) is provided in association with the at least one interchangeable holder in the sheath segment (40) supporting the same.

A sheath for a soil working roller (20) of a soil processing machine, said sheath is rotatable about a roller axis of rotation and comprises a plurality of sheath segments (40), mounted or mountable to surround a roller body (22) of the soil working roller (20) and following one another in the circumferential direction, wherein a plurality of roller tools (48) is arranged on an outer side of the sheath segments (40) positioned to be facing away from the roller body, wherein at least one part of the roller tools (48) comprise an interchangeable holder mounted on a respective sheath segment (48) and a replaceable tool detachably mounted or mountable on the interchangeable holder of the same, wherein a fastening opening is formed in the interchangeable holder for accommodating a fastening shaft of a replaceable tool mounted or to be mounted on the interchangeable holder, wherein a tool through opening (84) is provided in association with the at least one interchangeable holder in the sheath segment (40) supporting the same.

A system for de-plugging rotating ground engaging tools of an agricultural implement includes first and second ground engaging tools spaced apart from each other such that a flow gap is defined between the tools, a rotational actuator configured to rotationally drive the tools about a rotational axis, a sensor configured to capture data indicative of material accumulation within the flow gap defined between the tools, and a controller configured to determine when the tools are experiencing a plugged condition based on the data received from the sensor. Additionally, in response to the determination that the tools are experiencing the plugged condition, the controller is further configured to control an operation of the rotational actuator such that the tools are rotationally driven while such tools are disposed at a working position relative to a soil surface of a field.

A method for a cylindrical device includes semi-helically oriented teeth, knives, or blades radially outward from an outer surface of the cylindrical device or rotor is provided. Each tooth, knife, or blade is part of a row of teeth, knives, or blades. Each row is oriented with an offset angle such that the spirally orientation completes angular offset of about 90° or less. The knives may have sharpened edges that are oriented to cut on different planes as the cylindrical device rotates. The knives may be held in place by holders that have configurations to oriented the knives at certain angles.