A crop stripper has at least one drum (6a, 6b) with several axially extending series of stripping teeth (8). The drum is rotatably in end supports. The tooth roots (26) at the ends of the drum have an edge profile inclined radially away from the adjacent supports to deflect plant stems which contact these profiles during the operation of the stripper away from the supports, so reducing the tendency for the stems to become trapped between rotor and support. A capping (32) on the support overlaps the adjacent tooth roots to assist this effect. A pair of drums can be arranged end to end with an intermediate support (14) between them and be similarly arranged to deflect plant stems away from the intermediate support. This allows increase of the operating width of the crop stripper while minimizing the risk of blockage from stems trapped between the intermediate support and the drums.
A crop stripper has a rotor provided with metal stripping teeth. The teeth each have an outwardly tapering outer portion extending from a radially inner root portion of arcuate form which provides a root opening between adjacent teeth wider than the spacing between the teeth at the junctions of the inner and outer portions. Along each outer portion the edges of the teeth have flanging which terminates short of the inner portions. The flanging extends over not substantially more than 70%, preferably not more than 60%, of the length of the teeth. The stripping teeth are supported by shorter and thicker backing teeth placed behind the stripping teeth in the direction of rotation of the rotor.
