Drive roller for the draper canvas of a crop header

摘要

A crop harvesting header with a cutter bar and a draper assembly has a draper canvas driven by a drive roller 30 with a cylindrical roller body 301 having an outer surface 302 surrounding an axis of rotation 303 of the roller 30 for engaging an inner drive surface of a canvas wrapped therearound. The roller 30 has a plurality of ribs 305 arranged on the outer surface 302 of the roller body 301 extending along a part of the body 301 in an axial direction and angularly spaced around the outer surface 302. The ribs 305 have a height less than 6 mm and a width less than 6 mm arranged such that the ribs 305 do not engage into any recesses in the drive surface of the canvas. FIG 7 FOR PUBLICATION