Combine harvester cleaning apparatus

A combine harvester comprising:

• a mobile frame adapted for movement over a field, threshing and separating means supported on said frame to harvest crop material and produce a threshed and separated crop material;
• a cleaning mechanism disposed on said frame to receive said threshed and separated crop material from said threshing and separating means, said cleaning mechanism including a grain pan reciprocated in a fore-and-aft direction and having movable divider means and being operable to receive said threshed and separated crop material, sieve means operable to receive said threshed and separated crop material from said grain pan, and fan means operable to blow cleaning air through said sieve means to clean unwanted debris therefrom;
• inclination sensing means for sensing the lateral inclination of said frame and operable to produce an output indicative of said lateral inclination;
• and
• position control means mounted on said grain pan for movement therewith and being operable to movably adjust said divider means in response to the output of said inclination sensing means, said position control means including a linear actuator positioned beneath the grain pan and pivotally coupled at one end to a mounting support on the grain pan and operatively connected at an opposing end thereof to the divider means, said position control means further including a shuttle member guided for back-and-forth movement in a transverse direction relative to the grain pan and coupled to the linear actuator, said divider means being selectively connectable to the shuttle member for permitting the linear actuator to control the position of said divider means through the intermediary of said shuttle member and to the grain pan for fixing said divider means in a fixed position relative to said grain pan.