A telescoping rotatable tool includes a first shaft and a second shaft. The first shaft has a first material-engaging element extending from an exterior surface of the first shaft. The second shaft has a second material-engaging element extending from an exterior surface of the second shaft. The second shaft is configured to extend from and retract within an interior space presented by the first shaft. The first shaft includes at least one helical-shaped groove extending along an interior surface of the first shaft. The second shaft includes at least one guide element extending from the exterior surface of the second shaft. The guide element is configured to engage with the groove, such that as the second shaft extends from and retracts within the first shaft, the second shaft is configured to rotate with respect to the first shaft.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure and a belt. The crop delivery apparatus defines an outlet and is configured and positioned to propel a flow of crop material through the outlet such that a least a portion of the crop material is deposited onto the belt. The unloading structure is configured to receive the crop material from the crop delivery apparatus and has a structure including a conveyor tube portion extending along a longitudinal axis, the conveyor tube portion defining a passage therethrough having an open intake end. The belt extends from the intake end through the passage for transporting the crop material through the conveyor tube portion. A projection of the longitudinal axis of the conveyor tube portion of the unloading structure passes through an internal cross-sectional area defined by the outlet of the crop delivery apparatus.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure and a belt. The crop delivery apparatus defines an outlet and is configured and positioned to propel a flow of crop material through the outlet such that a least a portion of the crop material is deposited onto the belt. The unloading structure is configured to receive the crop material from the crop delivery apparatus and has a structure including a conveyor tube portion extending along a longitudinal axis, the conveyor tube portion defining a passage therethrough having an open intake end. The belt extends from the intake end through the passage for transporting the crop material through the conveyor tube portion. A projection of the longitudinal axis of the conveyor tube portion of the unloading structure passes through an internal cross-sectional area defined by the outlet of the crop delivery apparatus.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure, a belt, and a deflector. The crop delivery apparatus has an outlet through which a flow of crop material is expelled. The unloading structure receives the flow of crop material from the outlet of the crop delivery apparatus and includes a conveyor tube portion extending along a longitudinal axis and defining a passage therethrough with an open intake end. The belt extends into from the intake end through the passage for transporting the flow of crop material through the conveyor tube portion. The deflector extends within the unloading structure from an upstream end to a downstream end such that at least a portion of the flow of crop material received from the crop delivery apparatus contacts the deflector and is directed towards at least a portion of the belt.

An unloading system for a harvester is described as including a crop delivery apparatus, an unloading structure, a belt, and a deflector. The crop delivery apparatus has an outlet through which a flow of crop material is expelled. The unloading structure receives the flow of crop material from the outlet of the crop delivery apparatus and includes a conveyor tube portion extending along a longitudinal axis and defining a passage therethrough with an open intake end. The belt extends into from the intake end through the passage for transporting the flow of crop material through the conveyor tube portion. The deflector extends within the unloading structure from an upstream end to a downstream end such that at least a portion of the flow of crop material received from the crop delivery apparatus contacts the deflector and is directed towards at least a portion of the belt.

A cleaning system for an agricultural harvester includes a first and second cleaning systems. A plurality of fans of a substantially similar diameter are fluidically coupled to the first and second cleaning systems. A controller generates and sends control signals to the fans to control the speeds of the fans.

A harvesting machine has a crop tank and a conveyor screw inside the tank which extends from a material inlet opening on a wall of the crop tank into the interior of the crop tank. The conveyor screw comprises at least one proximal portion adjacent to the material inlet opening and one distal portion spaced apart from the material inlet opening at least by the proximal portion. The proximal portion and distal portion are rotatable around conveying axes running in different directions. The conveyor screw can be operated in a work position in which the conveying axis of the distal portion is oriented to be steeper than the conveying axis of the proximal portion.

A harvesting machine has a crop tank and a conveyor screw inside the tank which extends from a material inlet opening on a wall of the crop tank into the interior of the crop tank. The conveyor screw comprises at least one proximal portion adjacent to the material inlet opening and one distal portion spaced apart from the material inlet opening at least by the proximal portion. The proximal portion and distal portion are rotatable around conveying axes running in different directions. The conveyor screw can be operated in a work position in which the conveying axis of the distal portion is oriented to be steeper than the conveying axis of the proximal portion.

A separating and cleaning mechanism for an agricultural combine may include: a return pan. The return pan includes a textured floor, two augers, and two motors coupled to the two augers, respectively, to selectively drive the motors in rotation independently. The textured floor may oscillate in a fore-and-aft direction to move grain toward the two augers.

A separating and cleaning mechanism for an agricultural combine may include: a return pan. The return pan includes a textured floor, two augers, and two motors coupled to the two augers, respectively, to selectively drive the motors in rotation independently. The textured floor may oscillate in a fore-and-aft direction to move grain toward the two augers.