Patent ID: 8596374

Claim:
A ground working apparatus, comprising: a bridle assembly to secure a plow frame; a plow assembly defines a load and comprises a frame, and a runner and a plow tool each coupled to the frame; a linkage assembly coupling the frame to the bridle assembly to secure the plow frame for movement of the plow assembly between a raised position and lowered ground-working position relative to the bridle assembly; the runner and the plow tool depending downwardly from the frame to concurrently run over and plow, respectively, ground to be plowed along a plowing path ahead of the bridle assembly and the plow assembly, and the runner to run over the ground to be plowed to set the frame of the plow assembly at a fixed elevated position with respect to the ground to be plowed; and a load take-up assembly coupled between the bridle assembly and the linkage assembly, in the lowered ground-working position of the plow assembly the load take-up assembly applies a bias to the linkage assembly that takes up a portion of the load of the plow assembly, which, while insufficient to alone displace the plow assembly from the lowered ground-working position to the raised position relative to the bridle assembly, urges the plow assembly toward the raised position away from the lowered ground-working position relative to the bridle assembly to assist the plow assembly in displacing upwardly into the raised position from the lowered ground-working position relative to the bridle assembly in response to the runner encountering an obstacle.