Weed seeds are destroyed in the chaff from a combine harvester by repeated high speed impacts caused by a rotor mounted in one of a pair of side by side housings which accelerate the discarded seeds in a direction centrifugally away from the rotor onto a stator including angularly adjustable stator surfaces around the axis. Thus the discarded seeds rebound back and forth between the rotor and the stator to provide a plurality of impacts. The seeds are carried axially of the rotor by a controlled airstream so that they move to an axial discharge location where a discharge fan is mounted. The angle of the discharge around the rotor axis can be changed to direct the seeds to the side of the combine away from a straw chopper, towards the guide fins of the tailboard of the chopper, or into the housing of the straw chopper.

Weed seeds are destroyed in the chaff from a combine harvester by repeated high speed impacts caused by a rotor mounted in one of a pair of side by side housings which accelerate the discarded seeds in a direction centrifugally away from the rotor onto a stator including angularly adjustable stator surfaces around the axis. Thus the discarded seeds rebound back and forth between the rotor and the stator to provide a plurality of impacts. The seeds are carried axially of the rotor by a controlled airstream so that they move to an axial discharge location where a discharge fan is mounted. The angle of the discharge around the rotor axis can be changed to direct the seeds to the side of the combine away from a straw chopper, towards the guide fins of the tailboard of the chopper, or into the housing of the straw chopper.

A combine (10) includes a cleaning system (28) and an air conduit (80), which air conduit is arranged outside of a side wall (78) and through which the cleaning air is conducted downstream of the cleaning screens(48, 50, 66) to a suction blower (86) of the straw chopper (68), which suction blower is driven by a drive shaft (96).

A combine (10) includes a cleaning system (28) and an air conduit (80), which air conduit is arranged outside of a side wall (78) and through which the cleaning air is conducted downstream of the cleaning screens(48, 50, 66) to a suction blower (86) of the straw chopper (68), which suction blower is driven by a drive shaft (96).

A combine having a mobile frame and a harvesting header for removing crop material from the field and feeding it to a central location. A threshing and separating system separates grain from crop material and a feeder housing receives crop material from the harvesting head and conveys it to the threshing and separating system. A grain tank has a conveyor for transferring separated grain to the grain tank. Either of the harvesting header or the feeder housing has a perforated floor section sufficiently coarse to permit passage of grain to a conveyor beneath the perforated floor section that receives the grain and delivers it to either downstream of the threshing and separating system or the separated grain conveyor.

A crop residue spreader including at least one impeller, at least one radial housing, and at least one blower outlet opening. The at least one radial housing includes a crop residue outlet opening. The at least one impeller is configured to be rotatably driven around a rotation axis such that a crop residue flow is ejected through the crop residue outlet opening of the at least one radial housing, such that the crop residue flow is converted from an incoming crop residue flow into a wider outgoing crop residue flow. The at least one separate blower outlet opening is separate from the crop residue outlet opening of the at least one radial housing. The at least one blower outlet opening is configured to provide an outgoing airflow to accelerate the crop residue flow.

A crop residue spreader including at least one impeller, at least one radial housing, and at least one blower outlet opening. The at least one radial housing includes a crop residue outlet opening. The at least one impeller is configured to be rotatably driven around a rotation axis such that a crop residue flow is ejected through the crop residue outlet opening of the at least one radial housing, such that the crop residue flow is converted from an incoming crop residue flow into a wider outgoing crop residue flow. The at least one separate blower outlet opening is separate from the crop residue outlet opening of the at least one radial housing. The at least one blower outlet opening is configured to provide an outgoing airflow to accelerate the crop residue flow.

An agricultural combine has a cleaning shoe including an upper sieve or chaffer over a lower sieve. The lower sieve is over a clean gain chute. A return chute open to a return opening is under the clean grain chute. The clean grain chute receives clean grain from the chaffer and the lower sieve. The return chute receives unclean grain and tailings from the cleaning shoe through the return opening. The chaffer's rear extremity extends beyond the lower sieve's rear extremity configured with a sieve chute. The sieve chute is spaced under the chaffer's rear extremity and extends rearward and angularly upward above the return opening toward the chaffer's rear extremity from the lower sieve's rear extremity, allowing the sieve chute to intercept grain from the chaffer and divert it forward to the lower sieve and away from the return opening.

An agricultural combine has a cleaning shoe including an upper sieve or chaffer over a lower sieve. The lower sieve is over a clean gain chute. A return chute open to a return opening is under the clean grain chute. The clean grain chute receives clean grain from the chaffer and the lower sieve. The return chute receives unclean grain and tailings from the cleaning shoe through the return opening. The chaffer's rear extremity extends beyond the lower sieve's rear extremity configured with a sieve chute. The sieve chute is spaced under the chaffer's rear extremity and extends rearward and angularly upward above the return opening toward the chaffer's rear extremity from the lower sieve's rear extremity, allowing the sieve chute to intercept grain from the chaffer and divert it forward to the lower sieve and away from the return opening.

Weed seeds are destroyed in the chaff from a combine harvester by repeated high speed impacts caused by a rotor mounted in one of a pair of side by side housings which accelerate the discarded seeds in a direction centrifugally away from the rotor onto a stator including angularly adjustable stator surfaces around the axis. Thus the discarded seeds rebound back and forth between the rotor and the stator to provide a plurality of impacts. The seeds are carried axially of the rotor by a controlled airstream so that they move to an axial discharge location where a discharge fan is mounted. The angle of the discharge around the rotor axis can be changed to direct the seeds to the side of the combine away from a straw chopper, towards the guide fins of the tailboard of the chopper, or into the housing of the straw chopper.