A lawn mower includes a blade assembly configured to perform a cutting function. The blade assembly includes an upper blade mounted about a blade rotation axis and an upper blade proximal portion being substantially flat and including a first cutting edge. A lower blade is mounted in overlap with the upper blade about the blade rotation axis. The lower blade includes a lower blade proximal portion positioned outward from the lower blade mounting portion in a radial direction, a lower blade end portion positioned outward from the lower blade proximal portion and below the lower blade proximal portion, and a second cutting edge. A lower blade falling portion transitions from the lower blade proximal portion to the lower blade end portion.

A mulch diverting apparatus includes a panel configured to be coupled with a lawnmower. The panel includes a body portion defining a first side, a second side, an upper side, and a lateral surface configured to face the lawnmower. A first projection extends from the lateral surface of the body portion. The first projection extends toward the first side of the panel. A second projection extends from the lateral surface of the body portion. The second projection extends toward the second side of the body portion. A third projection extends from the lateral surface of the body portion. The third projection defines an orifice. A fourth projection extends from the lateral surface of the body portion. The fourth projection includes an arm extending from the body portion.

A mulch diverting apparatus includes a panel configured to be coupled with a lawnmower. The panel includes a body portion defining a first side, a second side, an upper side, and a lateral surface configured to face the lawnmower. A first projection extends from the lateral surface of the body portion. The first projection extends toward the first side of the panel. A second projection extends from the lateral surface of the body portion. The second projection extends toward the second side of the body portion. A third projection extends from the lateral surface of the body portion. The third projection defines an orifice. A fourth projection extends from the lateral surface of the body portion. The fourth projection includes an arm extending from the body portion.

Embodiments of blades for use with lawn mowers are provided herein. In some embodiments, a blade for a lawn mower includes a substantially flat central portion having a rotational axis configured to be coupled to a motor for rotating the blade; a distal portion extending radially from opposing sides of the flat central portion, the distal portion being a cutting region of the blade when mowing and defined by the following: a non-zero leading angle defining an angle of attack; and a non-zero camber percentage; and an intermediate portion disposed between the central portion and the distal portion and configured to minimize an amount of torsional stress between the central portion and the distal portion, wherein each distal portion comprises about 25 percent or less of a total length of the blade.

A method of autonomously controlling the ground speed of a harvester, such as a self-propelled or towed wind rower, uses both the engine speed and the header speed as control parameters to increase or decrease the ground speed as necessary to maintain efficient harvester operation over varying terrain and crop conditions. A control system includes a controller which receives signals from sensors indicative of engine speed, header speed and harvester ground speed and uses actuators to control the header speed, engine speed and harvester ground speed. An operator interface permits an operator to engage or disengage the autonomous mode of control system operation, as well as to directly control the harvester.

A mower deck insert includes a first cutting chamber, a second cutting chamber, and a discharge passage extending adjacent to the first cutting chamber and the second cutting chamber. The first cutting chamber includes a first axial scroll extending about a first vertical axis. The first axial scroll includes a first upper surface having a first start region and a first end region. The second cutting chamber includes a second axial scroll extending about a second vertical axis. The second axial scroll includes a second upper surface having a second start region and a second end region. The first start region is vertically lower than the first end region, and the second start region is vertically lower than the second end region.

A mower deck insert includes a first cutting chamber, a second cutting chamber, and a discharge passage extending adjacent to the first cutting chamber and the second cutting chamber. The first cutting chamber includes a first axial scroll extending about a first vertical axis. The first axial scroll includes a first upper surface having a first start region and a first end region. The second cutting chamber includes a second axial scroll extending about a second vertical axis. The second axial scroll includes a second upper surface having a second start region and a second end region. The first start region is vertically lower than the first end region, and the second start region is vertically lower than the second end region.

In an electric grass cutting machine relating to the present invention, an electric motor for driving a traveling device having a pair of left and right front wheels and a pair of left and right rear wheels and a gear transmission for speed-changing output from the electric motor and transmitting the resultant power to the traveling device are disposed between the left and right rear wheels and arranged one after the other in the front/rear direction at positions laterally of a conveying duct for guiding cut grass pieces from a rear discharge type mower device to a grass collecting container supported to a rear portion of a machine body frame.

In an electric grass cutting machine relating to the present invention, an electric motor for driving a traveling device having a pair of left and right front wheels and a pair of left and right rear wheels and a gear transmission for speed-changing output from the electric motor and transmitting the resultant power to the traveling device are disposed between the left and right rear wheels and arranged one after the other in the front/rear direction at positions laterally of a conveying duct for guiding cut grass pieces from a rear discharge type mower device to a grass collecting container supported to a rear portion of a machine body frame.

A header includes: a header frame; a cutter carried by the header frame; a roll disposed rearwardly of the cutter and configured to convey cut crop material rearwardly in a crop flow stream; a swath gate coupled to the header frame and movable between a spreading position and a converging position; a spreader coupled to the swath gate and configured to laterally spread the crop flow stream as the crop flow stream flows across the spreader; and a converger coupled to the swath gate and configured to converge the crop flow stream toward a centerline of the swath gate as the crop flow stream flows across the converger. The spreader and the converger are configured to not be in the crop flow stream at the same time, depending on the position of the swath gate.