Patent ID: 8534037

Claim:
A harvesting header operable to harvest a crop, said harvesting header comprising: a header frame; a flexible cutterbar assembly extending lengthwise in a lateral direction relative to the normal direction of travel of the header; a draper assembly supported behind the cutterbar assembly for conveying severed crop materials received from the cutterbar assembly; a plurality of laterally spaced apart support arms being attached to and cooperatively supporting the flexible cutterbar assembly, each of said support arms being pivotal about a laterally extending axis so that the flexible cutterbar assembly is operable to flex along the length thereof in response to changes in terrain as the header is advanced; and stop structure associated with a respective one of the support arms, with the stop structure being located forwardly of the laterally extending axis, said stop structure defining a limited range of angular movement of the one support arm and a corresponding range of generally vertical movement of the flexible cutterbar assembly adjacent the one support arm, said stop structure including a first stop confirmed to define a first limit of the range of angular movement, said stop structure including a second stop spaced from the first stop and configured to define a second limit of the range of angular movement, one of said first and second stops comprising an adjustable stop that is adjustably positioned relative to the header frame, with the other one of said first and second stops comprising a fixed stop that is fixed relative to the header frame, said first and second stops being defined by discrete spaced apart structural components, said first and second stops comprising first and second pins associated with each of the support arms such that each support arm is individually controlled by the associated first and second pins, said header frame presenting at least three openings associated with each second pin, each of said second pins being removably received in a corresponding opening to selectively define the permissible range of angular movement of the corresponding support arm, said header frame including a plurality of supports, with each support arm being pivotally attached to a corresponding support, each of said supports presenting the openings for the respective second pin.