Extendable draper belt

1. An agricultural vehicle, comprising:

a chassis;

a feeder housing carried by the chassis;

a header coupled to the feeder housing, said header including:

a flexible cutter bar; and

at least one endless belt positioned rearwardly of the flexible cutter bar and configured to travel in a direction of travel for transporting a crop material to the feeder housing, said at least one endless belt including:

a first belt having a first width transverse to said direction of travel; and

a second belt moveably attached to the first belt and having a second width transverse to said direction of travel and a front edge, said second belt including:

a plurality of elongated protrusions transverse to said direction of travel and configured for contacting the crop material; and

an engaging feature adjacent to the front edge and configured for moving the second belt in accordance with said flexible cutter bar,

wherein said second belt is slideable in a transverse direction to said direction of travel such that said second belt slides forwardly or rearwardly relative to said first belt and in accordance with a movement of said flexible cutter bar.

2. The agricultural vehicle of claim 1 , further including a flexible cam track coupled to the flexible cutter bar and flexing in accordance with the flexible cutter bar.

3. The agricultural vehicle of claim 2 , wherein said engaging feature engages with said flexible cam track such that as said flexible cam track flexes in accordance with the flexible cutter bar said engaging feature is pulled or pushed by the flexible cam track which moves the second belt in accordance with the flexible cutter bar.

4. The agricultural vehicle of claim 3 , wherein said engaging feature at least partially fits within said flexible cam track.

5. The agricultural vehicle of claim 1 , wherein said engaging feature is in the form of a lengthwise protrusion extending upwardly and along a length of the second belt.

6. The agricultural vehicle of claim 1 , wherein each of said plurality of elongated protrusions extends upwardly and includes an internal slot.

7. The agricultural vehicle of claim 6 , wherein said first belt and said second belt are attached by a plurality of fasteners fixedly attached to said first belt and at least partially disposed within said internal slots of said plurality of elongated protrusions such that said second belt is fixed relative to said direction of travel and slideable relative to said first belt in a direction transverse to said direction of travel.

8. The agricultural vehicle of claim 1 , wherein said second belt slides forwardly or rearwardly beyond the width of said first belt in accordance with the flexible cutter bar as it faces upwardly in contacting the crop material and said second belt recedes as it faces downwardly such that the width of the second belt matches the width of the first belt.

9. The agricultural vehicle of claim 1 , wherein said second belt is composed of a more flexible material than said first belt.

10. An endless belt positioned rearwardly of a flexible cutter bar and configured to travel in a direction of travel for transporting a crop material, said endless belt including:

a first belt having a first width transverse to said direction of travel; and

a second belt moveably attached to the first belt and having a second width transverse to said direction of travel and a front edge, said second belt including:

a plurality of elongated protrusions transverse to said direction of travel and configured for contacting the crop material; and

an engaging feature adjacent to the front edge and configured for moving the second belt in accordance with said flexible cutter bar,

wherein said second belt is slideable in a transverse direction to said direction of travel such that said second belt slides forwardly or rearwardly relative to said first belt and in accordance with a movement of said flexible cutter bar.

11. The endless belt of claim 10 , further including a flexible cam track coupled to the flexible cutter bar and flexing in accordance with the flexible cutter bar.

12. The endless belt of claim 11 , wherein said engaging feature engages with said flexible cam track such that as said flexible cam track flexes in accordance with the flexible cutter bar said engaging feature is pulled or pushed by the flexible cam track which moves the second belt in accordance with the flexible cutter bar.

13. The endless belt of claim 12 , wherein said engaging feature at least partially fits within said flexible cam track.

14. The endless belt of claim 10 , wherein said engaging feature is in the form of a lengthwise protrusion extending upwardly and along a length of the second belt.

15. The endless belt of claim 10 , wherein each of said plurality of elongated protrusions extends upwardly and includes an internal slot.

16. The endless belt of claim 15 , wherein said first belt and said second belt are attached by a plurality of fasteners fixedly attached to said first belt and at least partially disposed within said internal slots of said plurality of elongated protrusions such that said second belt is fixed relative to said direction of travel and slideable relative to said first belt in a direction transverse to said direction of travel.

17. The endless belt of claim 10 , wherein said second belt slides forwardly or rearwardly beyond the width of said first belt in accordance with the flexible cutter bar as it faces upwardly in contacting the crop material and said second belt recedes as it faces downwardly such that the width of the second belt matches the width of the first belt.

18. The endless belt of claim 10 , wherein said second belt is composed of a more flexible material than said first belt.