Patent ID: 9668400
Date: 2017-06-06
CPC Classifications: A01B

Claim:
1. A method for strip tilling a field having an uneven surface, said method comprising the steps of: establishing a straight line extending the length of the field using satellite-based position information; determining a pre-determined offset distance from said straight line corresponding to the distance between adjacent tillage strips; traversing the field along or parallel to said straight line while pulling a drawbar having plural ground engaging implements attached thereto, said drawbar having a center section and left and right wing sections, each coupled to a respective opposed end of said center section and capable of forward and aft pivoting movement relative to said center section; comparing the position of the drawbar during a pass of the field with said pre-determined offset distance from the straight line; pivoting said left and right wing sections in first and second opposed directions relative to said center section when the position of said drawbar and said pre-determined offset distance do not coincide to correct for down slope drift of said drawbar caused by the uneven surface of the field; and pivoting said left and right wing sections in third and fourth opposed directions relative to said center section when the position of the drawbar coincides with said pre-determined offset distance to traverse the field at said pre-determined offset distance relative to the straight line.