Tine harrow

A tine harrow comprising a plurality of harrow tines mounted on and downwardly depending from a harrow frame, the tines configured to be moveable between a lowered position and a raised position;

• wherein the harrow frame comprises at least one section of tines, the plurality of tines in the section of tines arranged in a plurality of transverse rows, and the tines in at least one transverse row are lowerable or raiseable to a different relative position in relation to the surface of the field than others of the tines located in different transverse rows;
• wherein the plurality of tines are lowered and raised by rotation of the tines about respective transverse axes, and the tines that are lowerable or raiseable to the different relative position are selectively lowerable or raiseable to at least two different relative positions;
• wherein the transverse axes are defined by longitudinally spaced-apart rotatable transverse axles mounted on the harrow frame, the transverse axles having the harrow tines mounted thereon, each of the transverse axles having a wheel mounted thereon, each of the wheels interconnected by a common translatable drive structure configured to rotate the wheels, thereby rotating the transverse axles about the transverse axes, thereby rotating the tines, thereby lowering or raising the tines;
• and,
• wherein the common drive structure comprises a driven endless loop around the wheels.

A tine harrow comprising a plurality of harrow tines mounted on and downwardly depending from a harrow frame, the tines configured to be moveable between a lowered position and a raised position;

• wherein the harrow frame comprises at least one section of tines, the plurality of tines in the section of tines arranged in a plurality of transverse rows, and the tines in at least one transverse row are lowerable or raiseable to a different relative position in relation to the surface of the field than others of the tines located in different transverse rows;
• wherein the plurality of tines are lowered and raised by rotation of the tines about respective transverse axes, and the tines that are lowerable or raiseable to the different relative position are selectively lowerable or raiseable to at least two different relative positions;
• wherein the transverse axes are defined by longitudinally spaced-apart rotatable transverse axles mounted on the harrow frame, the transverse axles having the harrow tines mounted thereon, each of the transverse axles having a wheel mounted thereon, each of the wheels interconnected by a common translatable drive structure configured to rotate the wheels, thereby rotating the transverse axles about the transverse axes, thereby rotating the tines, thereby lowering or raising the tines;
• and,
• wherein the common drive structure comprises a translatable toothed rack mounted on the harrow frame and the wheels comprise pinions configured to mesh with the translatable toothed rack, wherein translation of the toothed rack rotates the pinions.

A tine harrow comprising a plurality of harrow tines mounted on and downwardly depending from a harrow frame, the tines configured to be moveable between a lowered position and a raised position;

• wherein the harrow frame comprises at least one section of tines, the plurality of tines in the section of tines arranged in a plurality of transverse rows, and the tines in at least one transverse row are lowerable or raiseable to a different relative position in relation to the surface of the field than others of the tines located in different transverse rows;
• wherein the plurality of tines are lowered and raised by rotation of the tines about respective transverse axes, and the tines that are lowerable or raiseable to the different relative position are selectively lowerable or raiseable to at least two different relative positions;
• wherein the transverse axes are defined by longitudinally spaced-apart rotatable transverse axles mounted on the harrow frame, the transverse axles having the harrow tines mounted thereon, each of the transverse axles having a wheel mounted thereon, each of the wheels interconnected by a common translatable drive structure configured to rotate the wheels, thereby rotating the transverse axles about the transverse axes, thereby rotating the tines, thereby lowering or raising the tines;
• and,
• wherein at least one of the wheels has a different diameter than others of the wheels and is configured to rotate by a different amount than others of the wheels in response to the common translatable drive structure, thereby rotating the transverse axle to which the different diameter wheel is mounted by a different amount than other transverse axles connected to the common translatable drive structure, thereby lowering or raising the tines on the transverse axle to which the different diameter wheel is mounted by a different amount than others of the tines.