When seen in the rotational direction of the chipper disc, the rear ends of the wear plates (24) are fastened to the chipper disc with the aid of means which enable the torsion of the wear plates to be changed.

This invention relates to a method of handling knife devices in wood chipping machines, each knife device comprising a knife blade.

The present invention concerns an apparatus for receiving and feeding into a chipper wood to be chipped, said apparatus comprising a feed conveyor (12) receiving log bundles (1'), a tumbling drum (13) breaking the bundles, and a receiving conveyor (7').

Policies and procedures should be put in place to prevent metals and other foreign bodies from reaching pigs.

An arrangement in wood chippers of the kind which includes a rotatable body, such as a disc, on which knives (12) are secured with the aid of knive holders (10).