Rotatable wing dividers, harvesting headers, and agricultural machines having rotatable wing dividers

A harvesting header for use with a crop-harvesting machine, the harvesting header comprising:

• a header frame structured to be coupled to the crop-harvesting machine;
• a first divider assembly at a first end of the header frame and a second divider assembly at a second end of the header frame opposite the first end, each of the first divider assembly and the second divider assembly comprising:
• a fixed divider;
• a support shaft carried by the fixed divider;
• a rotatable wing divider coupled to the support shaft at a pivot point, the wing divider having a stop configured to prevent rotation of the wing divider past a selected downward angle relative to the support shaft, wherein at the selected downward angle, a lower member of the wing divider is collinear with the support shaft;
• and
• a torsional biasing element configured to apply a biasing rotational force to the wing divider relative to the support shaft;
• and
• at least one harvesting tool carried by the header frame between the first divider assembly and the second divider assembly.

An agricultural harvester, comprising:

• a chassis;
• a feederhouse carried by the chassis;
• a processing system carried by the chassis and structured to receive crop material from the feederhouse;
• a grain bin carried by the chassis and structured to receive processed grain from the processing system;
• and
• a harvesting header coupled to the feederhouse and configured to cut grain, the harvesting header comprising:
• a header frame;
• a first divider assembly at a first end of the header frame and a second divider assembly at a second end of the header frame opposite the first end, each of the first divider assembly and the second divider assembly comprising:
• a fixed divider;
• a support shaft carried by the fixed divider;
• a rotatable wing divider coupled to the support shaft at a pivot point, the wing divider having a stop configured to prevent rotation of the wing divider past a selected downward angle relative to the support shaft, wherein at the selected downward angle, a lower member of the wing divider is collinear with the support shaft;
• and
• a torsional biasing element configured to apply a biasing rotational force to the wing divider relative to the support shaft;
• and
• at least one harvesting tool carried by the header frame between the first divider assembly and the second divider assembly.