Patent ID: 7640875

Claim:
A seeding agricultural machine, wherein the machine includes at least one tool bar, a plurality of seeding assemblies mounted in the tool bar and at least one tow bar connected to the at least one tool bar and connectable to a tractor, the seeding assemblies include a rear planter unit and at least one leading cutting disc, wherein the machine comprises: a leading disc mounting mechanism pivotally mounted in a frame for moving up and down and including a leading disc support, with the leading cutting disc being mounted in the leading disc support, the leading disc support having an upper connecting portion and a lower connecting portion; a rear tools mounting mechanism pivotally mounted in the frame for moving up and down and including a rear tools support, with the rear planter unit being mounted in the rear tools support, the rear tools support having an upper connecting portion and a lower connecting portion; an antagonist mechanism in the frame for urging the leading disc mounting mechanism down when the rear tools mounting mechanism is urged up, and for urging the leading disc mounting mechanism up when the rear tools mounting mechanism is urged down; a leading upper arm having a leading end pivotally connected to the upper connecting portion of the leading support and a rear end pivotally connected to the tool bar; a rear upper arm having a leading end pivotally connected to the tool bar and a rear end pivotally connected to the upper connecting portion of the rear tools support; and, wherein the leading upper arm extends at a leading side of the tool bar and the rear upper arm extends at a rear side of the tool bar, with the antagonist mechanism pivotally mounted in the tool bar.