Abstract: A Variable Opening Reducer (VOR) for chipping excess fibers on a piece of wood periphery is described, the VOR comprising an infeed portion for securing and moving the piece of wood, along a longitudinal log axis thereof, inside the VOR, a chipping portion disposed sequentially after the infeed portion for receiving therein the piece of wood and for chipping and removing peripheral sections of the piece of wood, the chipping portion comprising a plurality of cutting tools, each of the cutting tools being adapted to revolve about a rotation axis thereof that is substantially perpendicularly located in respect of the longitudinal log axis of the log, each of the cutting tools being radially located in a position interfering with the piece of wood periphery to chip and remove excess fibers and an outfeed portion, disposed after the chipping portion, for receiving, securing and moving the piece of wood along the longitudinal log axis thereof A kit and a method of use thereof are also presented in the present appl

Abstract: A wood chipper includes a motor, a drive shaft, a feed roller, a feed chute, a chipping device 103, a discharge chute, and at least two adjustable legs. The feed roller has a centered horizontal position which is halfway between its minimum and maximum positions. When the feed roller is at its centered horizontal position, the motor, the drive shaft, and the feed roller are all level with one another. When the feed roller is below its centered position, the drive shaft is angled down from the motor to the feed roller. When the feed roller is above its centered position, the drive shaft is angled up from the motor to the feed roller. A plurality of guides maintain the feed roller in a level position. The legs are adjustable independent of one other to different heights. The legs angle outward at their bottom portions, where they are attached to skids.

Abstract: A process and a device for the continuous chipping of timbers of different length. To increase the chipping performance, in the execution of the sawing cut or directly thereafter, at least one supporting element for supporting the leading end face of a long timber pack and the posterior end face of a short timber pack is directed into the sawing plane. Directly adjoining the short timber pack, a just sawn-off short timber pack, together with the supporting element enclosed between them, is conveyed forward by one advancement cycle in the same direction. The supporting element, following the conclusion of the advancement cycle, is conveyed back into the directing-in area of the sawing plane, and each short timber pack is supportingly transported, free from any structural distortion, up to the chipping tool.

Abstract: A machine for hewing squared timbers from round trunks, with the aid of rotary cutters, before which there is a set of guiding rollers for the trunk to be hewn. The machine comprises two cutter pairs disposed immediately after each other and the axes of which form an angle of 90.degree.. The set of trunk guiding rollers consists of at least one pair of pulling wheels with padded circumference and disposed thereafter a track-resembling pair of pulling roller units, all of which together move in a transverse direction following the thickness of the trunk that is being hewn, parallel, and feeding in a forward direction the trunk that is being hewn.

Abstract: The invention concerns a wood pulper of the kind in which wood is fed via a hopper having advancing elements arranged on two opposite sides by which wood is advanced to a grinding stone. The invention is characterized in that said advancing elements comprise a plurality of driven shafts which are arranged parallel to and adjacent each other substantially transverse to the feed direction, said shafts being equipped with a plurality of toothed discs lying adjacent to each other. This arrangement enables the driving force to be distributed over a plurality of feed shafts, so that a continuous compression can be obtained which increases as the wood feeds through the hopper.