Cornhead crop loss detection

1. A cornhead row unit comprising:

first and second longitudinally extending stripper plates mounted on a frame and having opposed stripping edges which define a gap between them;

the frame further comprising:

an adjusting arrangement operatively connecting the frame and at least one of the first and second stripper plates to selectably and transversely move at least one of the first stripper plate and second stripper plate with respect to the other stripper plate to vary the width of the gap; and

a loss detection device operatively connected to the frame for permitting measurement of corn kernels lost as a result of drawing corn stalks through the gap to separate corn ears from the stalks; the loss detection device measures loss before crop enters an agricultural machine that hosts the corn head unit.

2. The unit of claim 1 , wherein the loss detection device is positioned beneath the frame.

3. The unit of claim 1 , wherein the loss detection device generates a signal in response to contact with lost corn kernels.

4. The unit of claim 3 , including a controller for receiving the signal.

5. The unit of claim 4 , including an operator notification device for alerting the operator of a magnitude of lost corn kernels.

6. The unit of claim 5 , wherein the operator notification device visually notifies the operator to the magnitude of lost corn kernels.

7. The unit of claim 5 , wherein the operator notification device audibly notifies the operator to the magnitude of lost corn kernels.

8. The unit of claim 2 , wherein the loss detection device includes a porous protective member configured for corn kernels to at least partially pass therethrough.

9. The unit of claim 8 , wherein the protective member is a screen.

10. The unit of claim 8 , wherein the protective member has a substantially open profile.

11. The unit of claim 10 , wherein the protective member resembles a comb.

12. A harvester comprising:

a cornhead row unit comprising:

first and second longitudinally extending stripper plates mounted on a frame and having opposed stripping edges which define a gap between them;

the frame further comprising:

an adjusting arrangement operatively connecting the frame and at least one of the first and second stripper plates to selectably and transversely move at least one of the first stripper plate and the second stripper plate with respect to the other stripper plate to vary the width of the gap; and

a loss detection device operatively connected to the frame for permitting measurement of corn kernels lost as a result of drawing corn stalks through the gap to separate corn ears from the stalks; the loss detection device operates before crop entrance into the harvester.

13. The harvester of claim 12 , wherein the loss detection device is positioned beneath the frame.

14. The harvester of claim 12 , wherein the loss detection device generates a signal in response to contact with lost corn kernels.

15. The harvester of claim 14 , including a controller for receiving the signal.

16. The harvester of claim 15 , including an operator notification device for alerting the operator of a magnitude of lost corn kernels.

17. The harvester of claim 16 , wherein the operator notification device visually notifies the operator about the magnitude of lost corn kernels.

18. The harvester of claim 13 , wherein the loss detection device includes a porous protective member configured for corn kernels to at least partially pass therethrough.

19. A method for reducing a loss of corn kernels associated with corn shelling by a harvester comprising:

providing a cornhead row unit comprising first and second longitudinally extending stripper plates mounted on a frame and having opposed stripping edges which define a gap between them;

providing an adjusting arrangement operatively connecting the frame and at least one of the first and second stripper plates to selectably and transversely move at least one of the first stripper plate and the second stripper plate with respect to the other stripper plate to vary the width of the gap;

shelling corn by drawing corn stalks through the gap to separate corn ears from corn stalks;

detecting the amount of lost corn kernels associated with shelling corn before the corn entering the harvester;

actuating the adjusting arrangement to vary the width of the gap between the first and second stripper plates.

20. The method of claim 19 , wherein detecting the amount of lost corn kernels comprises

providing a loss detection device operatively connected to the frame;

generating signals by the loss detection device as a result of contact with lost corn kernels;

receiving signals generated by the loss detection device; and

notifying an operator of a magnitude of lost corn kernels.