Furrow following device

1. A furrow following device for a planting machine, the furrow following device comprising:

an attachment bracket having a portion provided for attachment to a row unit of a planting machine;

an arm provided with a ground-facing surface for engagement with the soil during planting; and

a mount having a first portion coupled to the attachment bracket, the mount further having a second portion at least partially defining a pivot connection with the arm, the pivot connection providing relative rotation between the arm and the mount;

wherein the mount is a compliant mount provided with a spring that exhibits an elastic bias force as the arm is raised toward the attachment bracket,

wherein the mount includes a first link having a first end pivotally coupled to the attachment bracket and a second end pivotally coupled to the arm, and the mount further includes a second link having a first end pivotally coupled to the bracket and having a second end pivotally coupled to the arm, and

wherein the first and second links are normally biased to have a parallel relationship, and wherein one of the first and second links includes a selective sliding joint operable to enable the linkage to be selectively tripped to transition from the parallel relationship to a non-parallel relationship.

2. The furrow following device of claim 1 , wherein the mount is fixedly secured to the attachment bracket.

3. The furrow following device of claim 1 , wherein the arm is movable relative to the attachment bracket without changing orientation when the first and second links are in the normally biased parallel relationship.

4. The furrow following device of claim 1 , further comprising a second spring operable to bias the selective sliding joint into a position that maintains the parallel relationship between the first and second links.

5. The furrow following device of claim 1 , wherein the arm is a non-compliant arm.

6. The furrow following device of claim 1 , wherein the pivot connection defines an axis for the relative rotation between the arm and the mount that is fixed relative to the arm and the mount, and wherein the pivot connection is positioned along the arm at a location between the ground-facing surface and a portion of the arm to which the spring is attached.

7. A furrow following device for a planting machine, the furrow following device comprising:

an attachment bracket having a portion provided for attachment to a row unit of a planting machine;

an arm provided with a ground-facing surface for engagement with the soil during planting; and

a mount having a first portion coupled to the attachment bracket, the mount further having a second portion at least partially defining a pivot connection with the arm, the pivot connection providing relative rotation between the arm and the mount;

wherein the mount is a compliant mount provided with a spring that exhibits an elastic bias force as the arm is raised toward the attachment bracket,

wherein the spring is held in tension throughout an entire range of motion of the arm, the range of motion of the arm being limited by an abutment surface of the mount, and

wherein the abutment surface and the pivot connection are provided by parallel, spaced pins extending between lateral side plates of the mount that flank the arm.

8. A furrow following device for a planting machine, the furrow following device comprising:

an arm provided with a ground-facing surface for engagement with the soil during planting; and

a pivot connection located along the arm, the pivot connection defining an axis for rotation of the arm;

wherein the arm is supported by a compliant mount including a spring, and

wherein the pivot connection is positioned at a fixed location along the arm that is between the ground-facing surface and a portion of the arm to which the spring is attached.

9. The furrow following device of claim 8 , wherein the compliant mount further includes an attachment bracket for attachment to a row unit of a planting machine.

10. The furrow following device of claim 9 , wherein the spring exhibits an increasing bias force as the arm is raised toward the attachment bracket.

11. The furrow following device of claim 9 , wherein the mount includes a first link having a first end pivotally coupled to the attachment bracket and a second end pivotally coupled to the arm, and the mount further includes a second link having a first end pivotally coupled to the bracket and having a second end pivotally coupled to the arm at the pivot connection.

12. The furrow following device of claim 11 , wherein the first link and the second link, along with the arm and a base link fixed with respect to the attachment bracket, form a parallel linkage so that the arm is movable relative to the attachment bracket without changing orientation.

13. The furrow following device of claim 11 , wherein the first and second links are normally biased to have a parallel relationship, and wherein one of the first and second links includes a selective sliding joint operable to enable the linkage to be selectively tripped to transition from the parallel relationship to a non-parallel relationship.

14. The furrow following device of claim 13 , further comprising a second spring operable to bias the selective sliding joint into a position that maintains the parallel relationship between the first and second links.

15. The furrow following device of claim 8 , wherein the spring is held in tension throughout an entire range of motion of the arm, the range of motion of the arm being limited by an abutment surface of the mount.

16. The furrow following device of claim 15 , wherein the abutment surface and the pivot connection are provided by parallel, spaced pins extending between lateral side plates of the mount that flank the arm.

17. The furrow following device of claim 8 , wherein the arm is a non-compliant arm.