Patent ID: 7334611

Claim:
An arrangement in connection with a crosscutting saw of a harvester, a head of the harvester comprising: a saw casing and a chainsaw, arranged within the saw casing in a rotational manner, and a guide bar and a chain wheel, a chain of said chainsaw rotates around said guide bar and said chain wheel, the saw casing comprising strips on a cutting plane substantially flush with a rotational plane of the chain of the chainsaw, the strips being arranged in such a manner that a longitudinal axis of each of said strips is substantially parallel to the rotational axis of the chain wheel while defining saw dust openings between said strips, wherein the strips are arranged to overlap to provide a protective lattice structure in the saw casing, the protective lattice structure extending at least over the rotational plane of the chain of the chainsaw such that movement paths of the chain are generated at each of a plurality of turning points of the guide bar, said movement paths are arranged to encounter a surface in the strips, the strips being arranged to overlap in the saw casing such that at least one gap deviating from said movement paths remains between the strips, so that sawdust or other impurities flowing to the saw casing during sawing are dischargeable from the saw casing.