A double disc coulter 1 has two disc coulters 2 angled to each other to form a V shape that are rotatable on hollow axle stubs 3 by means of bearing units 18. One hollow axle stub 3 is arranged with a flange face 5 facing the coulter bar 4 at an angle to the vertical plane of the rotation axis of the hollow axle stubs. At the same time, the hollow axle stub 3 determines the angular position of the plane 13 that intersects in the rotation axis 6 and in an axis 7 vertical to the flange face 8, 9 of the coulter bar 4.

A subsoil tool for ameliorating soil compaction having a shank attached to a toolbar of a tractor, wings on forward wing links pivotally engaged to the shank, and following wings on a wing rod pivotally engaged with the forward wing link. The forward wing links are positioned near the bottom of the shank in front of the rear of the shank. The wing rod is positioned behind the shank. A drive box having a hydraulic cylinder is engaged to the toolbar and pivotally engaged with the wing rod. In use, a portion of the subsoil tool may be inserted below a surface of the soil, the height of the subsoil tool may be adjusted, the subsoil tool may be rotated, and the hydraulic cylinder may be cycled to move the forward wings and following wings.

A strip soil loosening and crushing mechanism of a no-tillage planting machine has a connecting bracket, a cutter head assembly, and a soil crushing wheel assembly. The cutter head assembly has two star-shaped cutter heads of the same structure, which are symmetrically arranged at outer sides of the two supporting plates. The soil crushing wheel assembly has a spring combined structure, a soil crushing wheel combined structure and two crank brackets rotatably connected at the outer sides of the two supporting plates of the connecting bracket by a connecting shaft.

A strip soil loosening and crushing mechanism of a no-tillage planting machine has a connecting bracket, a cutter head assembly, and a soil crushing wheel assembly. The cutter head assembly has two star-shaped cutter heads of the same structure, which are symmetrically arranged at outer sides of the two supporting plates. The soil crushing wheel assembly has a spring combined structure, a soil crushing wheel combined structure and two crank brackets rotatably connected at the outer sides of the two supporting plates of the connecting bracket by a connecting shaft.

An agricultural implement includes a frame; a shank mounted to the frame and including at least one clip edge; a retaining clip press fitted to the at least one clip edge and including a movable lock biased in a locking direction; and a ground working tool with a locking opening at least partially filled by the movable lock to resist the tool being removed from the shank

A ground working apparatus is supported on the toolbar of an agricultural implement for injecting liquid fertilizer into the ground. A disc arm is pivotally coupled to a mounting bracket on the toolbar to extend downwardly and rearwardly to a coulter disc rotatably supported on the lower end of the disc arm to cut the ground. An upright pivot assembly pivotally couples the upper end of the disc arm relative to the mounting bracket to pivot about an upright axis while preventing upward movement of the disc. A shank is pivotal on the disc arm to support a shovel trailing the disc to form an undercut trough connected to the ground cut formed by the coulter disc. A pressure mechanism prevents upward pivotal movement of the shovel relative to the disc arm until an upward pressure applied to the shovel exceeds a prescribed holding force of the pressure mechanism.

A ground working apparatus is supported on the toolbar of an agricultural implement for injecting liquid fertilizer into the ground. A disc arm is pivotally coupled to a mounting bracket on the toolbar to extend downwardly and rearwardly to a coulter disc rotatably supported on the lower end of the disc arm to cut the ground. An upright pivot assembly pivotally couples the upper end of the disc arm relative to the mounting bracket to pivot about an upright axis while preventing upward movement of the disc. A shank is pivotal on the disc arm to support a shovel trailing the disc to form an undercut trough connected to the ground cut formed by the coulter disc. A pressure mechanism prevents upward pivotal movement of the shovel relative to the disc arm until an upward pressure applied to the shovel exceeds a prescribed holding force of the pressure mechanism.

A coulter assembly for an agricultural implement. The coulter assembly includes a support structure and a disc blade rotatably mounted to the support structure. The coulter assembly also includes a spring assembly coupled to the support structure and configured to urge the disc blade into soil. The spring assembly includes a variable rate spring.

A coulter assembly for an agricultural implement. The coulter assembly includes a support structure and a disc blade rotatably mounted to the support structure. The coulter assembly also includes a spring assembly coupled to the support structure and configured to urge the disc blade into soil. The spring assembly includes a variable rate spring.

An agricultural implement includes: a frame including a front frame section, a rear frame section, and a counterbalancing frame section between the front frame section and the rear frame section; a hitch connected to the front frame section; a plurality of shanks connected to the rear frame section; a plurality of residue managing assemblies connected to the front frame section and/or the counterbalancing frame section; and a ground engaging assembly connected to the frame between the counterbalancing frame section and the rear frame section and defining a fulcrum between a front side and a rear side of the frame, the front side and the rear side of the frame being substantially balanced about the fulcrum.