Abstract: A refurbished knife holder for wood chippers and a method of repairing wear parts are disclosed. The knife holder includes a machined recess and an insert bonded to the holder at the recess and machined to define the surfaces of the holder. The method includes the steps of preparing the wear part and the insert for bonding and bonding the insert to the wear part by an induction heating operation at approximately 1200.degree. F. A silver alloy filler material having approximately 50% silver and a flow point of approximately 1180.degree. F. is employed.

Abstract: A chipper comprised of a disk body, a driving shaft mounted on the disk body for rotating it and at least one spout connected with the casing and a plurality of cutting blades located on the disk body along at least one spiral path extending from the center to the periphery of the disk body, each of the cutting blades having main and auxiliary cutting edges which are positioned and connected angularly to each other, the main cutting edge being inclined to the surface of the disk body with such an angle that one end of the main cutting edge is positioned at a height corresponding to the thickness of chips to be cut with the connecting edge between the main edge and corresponding auxiliary cutting edge positioned two times as high as the one end of the main cutting edge.

Abstract: A chipping device including a disc-like member having a front face and the opposite face connected at its central region to a rotating shaft, said front face being provided with a spiral working surface which consists of main and auxiliary oblique surface portions extending along a spiral path from the central region of said disc-like member to the peripheral edge thereof, and being inclined relative to a plane perpendicular to the rotational axis of the disc-like member with an angle included between said main and auxiliary surface portions, said working surface having a plurality of cutting blades spaced from one another therealong, each of said cutting blades having main and auxiliary cutting edges substantially parallel to said main and auxiliary oblique surface portions, respectively.

Abstract: A chipper infeed spout incorporating two surfaces disposed to form a V-shape having one side formed by a pair of support means (an anvil member and preferably a roll). A driven power roll is moveable across the direction of travel of the log along said spout and tends to align the log and force it against the pair of support means whereby the log forms a beam freely supported (by the support means) and having a concentrated load (power roll) interposed between the supports. Preferably the power roll is oriented to apply forces to a log not only to tend force it against the two spaced supporting means but also to force it toward the apex of the V of the V-shaped supporting surfaces.

Abstract: The present invention is related to a chipper wherein the housing is divided by a chipper disc into a front chamber and a chip chamber and wherein separate outlets are provided from the front chamber and from the chip chamber respectively for twigs and the like (debris) and for chips whereby separation of debris from the chips is obtained in the chipper.

Abstract: A disk type wood chipper having cutter knives disposed non-radially on a chipper disk to cut a slab of wood from a log and having guide means with ridges over which such slab is caused to slide so that the slab disintegrates into wood chips of substantially uniform size.

Abstract: A closed hollow housing including a first pair of opposite sides is provided and one of the sides includes an inlet opening formed therein for lengthwise receiving an elongated log of expanded foam plastic (Urea-formaldehyde) fed therethrough from the exterior of the housing. A driven rotor is journaled in the housing for rotation about an axis generally normal to the aforementioned side and with the rotor registered with the inner end of the opening. The rotor includes circumferentially and radially spaced elements supported therefrom and projecting outwardly from the axial end thereof opposing the aforementioned one side of the housing for engaging and shredding the end of the expanded foam plastic log being advanced into the housing through the opening.

Abstract: A cutter head the entire cutting width of which is divided into a few parallel cutting strips defined by respective sets of cutting knives. The diameters of the cutting circles of the knives of the different sets increase stepwise in the direction away from the log. The angle of inclinaton of the main cutting edge of the knives in relation to the axis rotation of the cutter head is large in the case of the knives defining the cutting strips placed closest to the log and small in the case of the knives defining the cutting strips placed more distant from the log.

Abstract: An apparatus for reducing whole trees having attached limbs and branches to chips wherein a power driven disc chipper is mounted on a frame and a tree or brush feeding and conditioning mechanism is driven at a coordinated feeding speed for feeding trees and tree parts into the chipper while folding projecting limbs and branches inwardly toward the trunk. A pair of power driven feed rolls, mounted for rotation about generally horizontal axes above and below a feed path, are supported for both coordinated generally vertical movement relative to the frame and for relative vertical movement, and power actuated means are provided for selectively varying the vertical spacing between the pair of feed rolls. The power actuated means are so arranged that when a squeezing action is applied, as to crush vertically projecting limbs, the upward force exerted by the lower roll exceeds the downward force exerted by the upper roll to reduce the frictional force exerted by any obstructing tree parts on the support platform.

Abstract: Machinery for reducing forest products to wood chips wherein a bed conveyor, a powered roll mounted for vertical movement above the bed conveyor, and powered, generally vertical side roll means downstream of the generally horizontal roll, feed a tree or log to a chipper disc. The chipper disc has at least one opening, and a knife positioned at the opening to cut products conveyed to the disc into chips and propel them through the opening with rotation of the disc assembly. The machine includes improvements which are more specifically set forth in the following material.

Abstract: A rotary cutting apparatus having cutters or knife devices which are provided with angularly disposed contact surfaces and which devices are mounted with the contact surfaces in cooperative engagement with angularly disposed supporting or clamping surfaces of opposed knife support members.

Abstract: A sawmill for cutting finished boards from logs in a single operation. The log is mounted on a reciprocating carriage which is also laterally adjustable to control the thickness of each board. Two vertically adjustable circular chippers are mounted on a vertical shaft. The spacing of the chippers controls the width of each board. A vertical saw is positioned with respect to the chippers so that the sides of the saw cut made through the log span the vertical cuts made by the chippers. The operation produces a maximum of sawdust.

Abstract: A machine for cutting wood chips to shavings comprises a rotatable drum having circumferentially spaced cutting members connected to a feed passageway. The latter extends along a substantial portion of the length of the drum and houses feed screws forcing the chips into contact with the cutting members. The drum is surrounded by a housing with a widened portion defining a wedge-shaped cutting chamber. The formed shavings pass inside the drum in the longitudinal direction thereof to the outlet of the machine.

Abstract: The tool holder is provided with a setbolt having a T-shaped cross section head including a rectangular end plate which fits into a T-shaped cross section slot in the associated tool providing ease of tool assembly and disassembly for servicing and sharpening. The tool holder and the tool are similarly shaped to provide a smooth exterior surface for the assembly which does not have cavities and pockets causing troublesome accumulations of chips and splinters.

Abstract: The canting machine comprises a pair of log slabbing rotary chipper heads arranged to slab off opposite sides of a log to make a cant which may be subsequently sawed into lumber. The infeed section comprises an endless chain having pairs of saddles spaced different distances apart on the chain to receive logs of different length. One end of the log rests on one saddle and the opposite end rests on the other saddle of the selected pair. In another arrangement, two side-by-side endless chains may be used, one chain carrying a saddle to support the leading end of each log and the other chain carrying a saddle to support the trailing end. A differential drive mechanism for the chains permits adjustment of the spacing of the two saddles to accomodate short and long logs. The outfeed section in either case comprises a pair of guide plates having feed rollers to grip opposite sides of the cant.