Patent ID: 9258941
Filing Date: 2016-02-16
CPC Classification: A01D

Claim Text:
1. A crop harvesting machine for cutting a standing crop comprising: a cutter bar mounted across a width of the machine for movement across the ground for harvesting the standing crop, the cutter bar defining a cutting plane; a vehicle carrying the cutter bar comprising a support assembly and ground wheels supporting the support assembly in movement in a forward direction across the ground; a mounting assembly supporting the cutter bar on the support assembly which has components which provide up and down floating movement of the cutter bar relative to the support assembly; a detection arrangement responsive to said up and down floating movement of the cutter bar relative to the support assembly; a tilting system which has components to tilt the cutter bar about an axis transverse to the forward direction of the machine so as to tilt the cutting plane from a generally horizontal position forwardly so that a front edge of the cutting plane moves downwardly and a rear edge of the cutting plane moves upwardly and from the generally horizontal position rearwardly so that the front edge of the cutting plane moves upwardly and the rear edge of the cutting plane moves downwardly; and a control arrangement connected to detection arrangement; said control arrangement including components operating the tilting system in response to said detection arrangement responsive to said upward and downward floating movement of the cutter bar; said control arrangement being operated when the cutter bar is moving upwardly to cause operation of the tilting system to tilt the cutting plane rearwardly; said control arrangement being operated when the cutter bar is moving downwardly to cause operation of the tilting system to tilt the cutting plane forwardly.