Patent attributes
A crop header having a frame mounted on a vehicle has a sickle cutter bar and a draper. The draper is guided at its front edge by a longitudinally extending rail mounted on the frame. The cutter bar is mounted at spaced positions by spring blades attached to a fixed beam at the rear which allow up and down flexing movement of the cutter bar relative to the draper rail. At the center discharge the cutter bar is carried on shorter blades which are carried on a beam in front of the front draper roller. A locking device is provided for commonly and automatically moving the beam in a direction to lift the cutter bar into a raised position in which the cutter bar is locked against flexing movement with the locking device being operable in response to the cutter bar being raised off the ground.
