CROP HEADER WITH DRAPER CANVAS

摘要

A header includes a generally C-shaped cutter bar supporting the sickle knife assembly across a front edge of the header. A draper assembly i s carried behind the cutter bar and includes a pair of rollers at right angles to the beam carrying a continuous draper canvas band around the rollers with the front edge of the canvas underneath the cutter bar. The rollers and a support plate betwee n the rollers for the upper run of the canvas are both recessed relative to the front edge of the canvas to leave a cantilever portion at the front edge of the canvas whi ch projects under the cutter bar to forma seal. The position of the draper canv as on the rollers is guided by a pair of longitudinally extending ribs one adjacent bu t spaced rearwardly from the front edge and abutting the trailing edge of the cutter bar and the other adjacent but spaced forwardly from the rear edge and abutting a front edge of a rear plate. The ribs are formed integrally with transverse slats. The fron t rib forms a damming effect reducing the possibility of material sliding over the front edge of the draper. An upper surface of the front rib can be castelated to provide a n increased aggressive action tending to pull the crop along the draper.