A disc cutter for an agricultural implement includes: a disc body configured to rotate in a rotation direction; a knife mount carried by the disc body and including a body mounting feature; and a knife coupled to the knife mount. The knife includes: a pair of cutting sections each having a knife mounting feature disposed on or in a knife surface between a pair of edges of the cutting sections and configured to couple with the body mounting feature, each of the edges defining a cutting angle with respect to the knife surface such that the edges extend in parallel.

A disc cutter for an agricultural implement includes: a disc body configured to rotate in a rotation direction; a knife mount carried by the disc body and including a body mounting feature; and a knife coupled to the knife mount. The knife includes: a pair of cutting sections each having a knife mounting feature disposed on or in a knife surface between a pair of edges of the cutting sections and configured to couple with the body mounting feature, each of the edges defining a cutting angle with respect to the knife surface such that the edges extend in parallel.

A stalk roll having twelve flutes extending radially from the main cylinder along the length of the main cylinder. Within the row unit opposing stalk rolls cooperate to engage and capture the corn stalk, thereafter, controlling and processing the corn stalk. The flutes may be configured with differing edges to facilitate control and movement of the stalk to the point of ear separation within the row unit. The flutes may be configured such that opposing compressive forces acting on the exterior of the stalk at approximately 180? of separation operate to implode the stalk while sharp edges on the flutes operate to cut the stalk into small segments which are deposited on the ground for decomposition.

A stalk roll having twelve flutes extending radially from the main cylinder along the length of the main cylinder. Within the row unit opposing stalk rolls cooperate to engage and capture the corn stalk, thereafter, controlling and processing the corn stalk. The flutes may be configured with differing edges to facilitate control and movement of the stalk to the point of ear separation within the row unit. The flutes may be configured such that opposing compressive forces acting on the exterior of the stalk at approximately 180? of separation operate to implode the stalk while sharp edges on the flutes operate to cut the stalk into small segments which are deposited on the ground for decomposition.

A header for an agricultural harvester including an epicyclical drive gear train operatively connected to a first cutter bar, an epicyclical driven gear train operatively connected to a second cutter bar, and a shaft extending between and operatively connected to the epicyclical drive gear train and the epicyclical driven gear train. The epicyclical drive gear train rotates in a first direction and the shaft is configured to rotate the epicyclical driven gear train in a second direction opposite the first direction or in the same direction as the first direction. Each of the epicyclical drive gear train and epicyclical driven gear train includes a bevel gear for operatively engaging bevel gears on the shaft. Operation of the epicyclical drive gear train and epicyclical driven gear train results in substantially linear oscillating motion of the cutter bars.

A frequency of clip control system includes a vehicle controller receiving an output from a ground speed user interface for a requested ground speed, and an output from a frequency of clip user interface for a requested frequency of clip. The vehicle controller sets the speed of an electric reel motor based only on the requested ground speed, the requested frequency of clip, and parameters of the cutting unit including the number of cutting blades of the cutting reel and reel motor to reel speed ratio.

A frequency of clip control system includes a vehicle controller receiving an output from a ground speed user interface for a requested ground speed, and an output from a frequency of clip user interface for a requested frequency of clip. The vehicle controller sets the speed of an electric reel motor based only on the requested ground speed, the requested frequency of clip, and parameters of the cutting unit including the number of cutting blades of the cutting reel and reel motor to reel speed ratio.

A mower for turf or lawn includes a frame for use on a tractor, or to form a structure of a trailer, and a plurality of cutting units, at least six, generally disposed side by side, each cutting unit including at least one roller for rolling on the ground. The mower includes lift means linking the cutting units to the frame and configured for articulating the cutting units between a mowing position and a non-mowing position. In the mowing position, the lift means are configured for pressing the cutting units against the ground in order to distribute, at least partially, the mower's weight on the ground via the rollers of the cutting units. The mower includes lateral articulated beams linking the cutting units. The beams are foldable inwardly and forwardly.

A mower for turf or lawn includes a frame for use on a tractor, or to form a structure of a trailer, and a plurality of cutting units, at least six, generally disposed side by side, each cutting unit including at least one roller for rolling on the ground. The mower includes lift means linking the cutting units to the frame and configured for articulating the cutting units between a mowing position and a non-mowing position. In the mowing position, the lift means are configured for pressing the cutting units against the ground in order to distribute, at least partially, the mower's weight on the ground via the rollers of the cutting units. The mower includes lateral articulated beams linking the cutting units. The beams are foldable inwardly and forwardly.

A mower includes a plurality of grass cutting units, either reel or rotary, arranged in a gang configuration. Each cutting unit is connected to the mower by a separate suspension that includes a lift and lower portion for lifting and lowering the cutting unit out of and into contact with the ground, respectively. The suspension includes a ground contour following portion permitting the cutting unit to have one or more degrees of freedom relative to the lift and lower portion to independently follow the ground contours the cutting unit encounters. A tuned mass damper is installed in the ground contour following portion of the suspension or is adjacent to a connection between the ground contour following portion and the lift and lower portion for damping undesired vertical bobbing of the cutting unit.