Abstract: A device and method for cutting lumber pieces into shavings. The device includes a hopper sized to hold the lumber pieces that are to be cut into the shavings, and a carriage that is positioned below the hopper. The carriage includes a support platform to support the lumber pieces that are in the hopper, and cutterheads spaced apart along the support platform. The carriage is movable relative to the hopper to move the cutterheads back and forth along the lumber pieces during the cutting. An arrestor maintains the lumber pieces in position relative to the hopper when the carriage is moving in one direction to prevent and/or reduce the lumber pieces from moving and thus not being completely cut by the carriage.

Abstract: Apparatuses, methods, and systems for producing wood chips are disclosed. The disclosure in one embodiment produces smooth wood chips of generally uniform size and shape, suited for use in making paper, cardboard, and other recyclable materials. In one embodiment, an apparatus is disclosed for collecting, aligning and guiding wood scraps through an array of spaced-apart saw blades using a feeder assembly operating on a continual basis. The feeder assembly in one embodiment includes one or more paddle assemblies shaped to align and guide the wood scraps along a feeder path toward the saw blades. A system for controlling an apparatus is also disclosed. A method for reducing wood scraps into cut chips is also disclosed.

Abstract: A compressed wood product includes a first part composed of a wooden material compressed into a predetermined shape; and a second part to be joined with the first part. A direction of wooden fibers of the wooden material composing the first part is substantially parallel with a lengthwise direction of the first part and intersects with a thickness direction of the first part. At least one surface of the second part is substantially perpendicular to the lengthwise direction of the first part.

Abstract: A heavy flywheel disc having a radially spaced apart array of pockets in which are mounted knives. Short logs, which have been de-barked, are fed in with their long axis parallel to the face of the flywheel. A hydraulic ram translates the logs sideways into the plane containing the rotating knives. The use of the hydraulic ram provides for a variable infeed speed to obtain the particular thickness of shavings which provides in the end commercially desirable shavings for use, for example, in horse stables. The knives have notched cutting edges. The notches limit the width of each shaving to create strands which are for example ¾ inches wide. The strands are then chopped in an automated chopping device such as a forage harvester to produce shavings.

Abstract: Apparatuses, methods, and systems for producing wood chips are disclosed. The invention in one embodiment produces smooth wood chips of generally uniform size and shape, suited for use in making paper, cardboard, and other recyclable materials. An apparatus is disclosed for collecting, aligning and guiding wood scraps through an array of spaced-apart saw blades using a feeder assembly operating on a continual basis. The feeder assembly may include one or more paddle assemblies shaped to align and guide the wood scraps along a feeder path toward the saw blades. A system for controlling the inventive apparatus is also disclosed. A method for reducing wood scraps into cut chips is also disclosed.

Abstract: An apparatus for comminuting a stack of wood boards to produce wood strands. A stack feeder feeds the stack of wood boards to a chipper chamber on a longitudinally displaceable carriage moving transverse to the direction of feed of the stack and having a blade ring for comminuting the end of the stack. The chamber is reduced in full volume with replaceable and removable filler bodies.

Abstract: Apparatus for processing logs to manufacture wood chips. The apparatus includes a circular disc for passing a series of blades through a chipping station and a chute and spout assembly for feeding logs from a conveyor into the chipping station. A lifting mechanism is mounted for rotation upon a shaft which is situated adjacent to but outside of the chute and spout assembly. A drive unit is arranged to turn the shaft so that the lifting mechanism is rotated between a retracted position outside of the flow described by the chute and spout assembly and an extended position inside the chute and spout assembly whereby the lifting mechanism can contact logs within the assembly and move the logs contra to the direction of flow.

Abstract: Apparatus for processing logs to manufacture wood chips. The apparatus includes a circular disc for passing a series of blades through a chipping station and a chute and spout assembly for feeding logs from a conveyor into the chipping station. A lifting mechanism is mounted for rotation upon a shaft which is situated adjacent to but outside of the chute and spout assembly. A drive unit is arranged to turn the shaft so that the lifting mechanism is rotated between a retracted position outside of the flow described by the chute and spout assembly and an extended position inside the chute and spout assembly whereby the lifting mechanism can contact logs within the assembly and move the logs contra to the direction of flow.

Abstract: An apparatus is provided for cutting oversized wood chips smoothly and uniformly, such that the resulting chips are of optimum size and shape for use in making paper, cardboard, and other recyclable materials. A method is provided for aligning and guiding oversized wood chips through an array of spaced-apart saw blades using a reciprocating plunger controlled to continuously align and sweep the wood chips completely through the saw blades. The method and apparatus can be adapted to produce a variety of desired wood chip sizes.

Abstract: A method and apparatus for reducing the size of wood members, particularly pan-shaped wood members known in the industry as “lilypads”, such that the orientation of the fibers of the lilypads are encouraged to be substantially perpendicular to the longitudinal and rotation axis of a cutting drum having a plurality of cutting members extending from its circumferential surface.

Abstract: A process is disclosed for cutting logs to form large-surface wood chips, in which, on the one hand, a rotating knife ring provided with cutting knives which are oriented parallel to its axis of rotation and, on the other hand, a quantity of logs which are likewise oriented parallel to the axis of rotation of the knife ring are moved toward one another and the logs are cut. A device for carrying out this process is also disclosed. In a device of the type mentioned above, the movement of the knife ring directed to the logs and/or the movement of the logs directed to the knife ring is carried out on a curved path at least during the cutting process. In this way, individual chip sectors are “compressed”, while others are “expanded” in such a way that there is a greater proportion of chips whose quality lies within the predetermined tolerance.

Abstract: A system for converting wood products into viable base construction materials consisting of a support structure, a central structure consisting of a low speed, high torque, hydraulic motor which drives a central drive shaft to which a planing table is rotatably attached. Four or more feed chutes are radially attached to the outer supports and the logs are sliced over eight blades arranged on the planing table. An alternative embodiment consists of a rotary cutting device where logs are fed to cutting blades rotating below.

Abstract: A process for the preparation of a cellulosic fibrous aggregate, comprising a softening stage, a dewatering stage and a curing stage, whereby in the softening stage a section of cellulosic fibrous material is exposed to the action of a liquid aqueous softening agent at elevated temperature and at a pressure of at least the equilibrium vapor pressure of the softening agent at the operating temperature, and whereby part of the heat required to raise the temperature of the starting material to the operating temperature of the softening stage, is obtained, by heat-exchange contact, from an aqueous stream, the initial temperature of which is substantially equal to the said operating temperature.

Abstract: Method and apparatus for preventing or releasing a blockage occurring in a flow of tree trunks supplied to a wood chipper via a feed hopper and for securing an uninterrupted flow of timber to the chipper. At least one lifting arm is insertable to project through an opening defined in a hopper. The lifting arm is inserted to raise tree trunks wedged in the hopper and release blockages. The duration of the lifting arm insertion is controlled momentarily for limiting the amount of tree trunks supplied to the chipper.

Abstract: Apparatus for creating wooden shavings for stock bedding from logs which includes a frame supporting a carriage bed and rotary carriage ring. Arcuately spaced rotary cutter means are provided on the carriage bed, and are positioned to contact logs supported on the carriage ring. The carriage ring consists of an annular carriage support ring which supports arcuately spaced log-receiving boxes, so that upon rotation of the annular carriage support ring, logs positioned within the log-receiving boxes are exposed to the cutting action of the rotary cutter means.

Abstract: A method and apparatus for reducing the size of wood members, particularly pan-shaped wood members known in the industry as "lilypads", such that the orientation of the fibers of the lilypads are encouraged to be substantially perpendicular to the longitudinal and rotation axis of a cutting drum having a plurality of cutting members extending from its circumferential surface.

Abstract: A method and a feeding chute for feeding logs (10) into a disc chipper by means of the gravity. The logs (10) are supported laterally by means of adjacent bottom portions (31, 32) of the chute (3) and shoulders between those. The logs are turned parallel with the longitudinal direction of the chute by means of a moment (M) which occurs when the direction of the main axis (27) of the ellipse forming the shearing surface of the log deviates from the direction (27') perpendicular to a the direct line (30) drawn via the rotating center (28) of the blade disc and the center (29) of the ellipse. The bottom portions (31, 32) of the chute are inclined around a longitudinal axis in such a way that from two adjacent bottom portions of the chute, the one (31) further away from the rotating axis of the disc forms a bigger angle (.beta.') with respect to the horizontal plane than the angle (.beta.") formed by the portion (32) closer to the rotating axis.

Abstract: An improved strander, and methods of operating the same, alternately delivers material into a housing element through at least two feeding points so that material fed through the first feeding point can be stranded during movement of the housing element in a first direction. Material fed into the strander through the second feeding point can be stranded by the housing element on its return movement in a second direction. Thus, the stranding process can continue nearly continuously throughout each working cycle.

Abstract: A method of crushed ground-wood processing comprises charging the input between two relatively revolving and displaced conical surfaces with simultaneous dimension separation variation by circulating vibrations causing the surfaces to apply variable squeezing pressure and lateral or normal forces to effectively compress and rub the bark from the wood surface.

Abstract: An improved chute and spout assembly for use with a wood chipper that clears logjams by the use of hydraulic rams attached to the chute near the chipper. The rams move between an extended position, for moving the logs, and a retracted position, when the logs are sliding by gravity on the interior surface of the chute. The rams are oriented and spaced apart in order to move the logs when jammed without interfering with each other when more than one ram is extended into the interior of the chute to move the logs. When retracted, the ends of the rams are approximately flush with the interior surface of the chute. Each ram is independently controlled for flexibility in clearing logjams.

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 device suitable for the continuous feeding of wood pieces of approximately the same length into flaking machines comprises a feed trough opening into the flaking machine, behind which there is arranged a loading magazine whose cross section agrees with the feed trough. The lengths of wood are shaped into compact piles, which are then advanced cyclically into the flaking machine by means of a pushing plate. In order to be able to bring the pushing plate back over the log pile already prepared for further processing inside the loading magazine, the pushing plate is able to be slewed upon a support that can be moved parallel to the floor of the device, over both the feed trough and the loading magazine. Control members attached to the pushing plate interact for short intervals with stationary control paths at the beginning and end of the return trip of the pushing plate to cause the plate to tip either into its withdrawal position or into its pushing position.

Abstract: A machine for reducing the size of material is provided. A movable blade is moved at least nearly parallel to a fixed blade via a raising and lowering mechanism, and is supplied with a force that opposes a cutting pressure. Only a single drive is necessary for the movable blade, so that the machine has a structurally simple and economical configuration. Since the blades are moved parallel to one another at low speed, the noise and dust emission is extremely low. The cutting pressure necessary for the cutting process is applied by the raising and lowering mechanism. The force required is kept small since the material is cut in a shearing process.

Abstract: A horizontal disk wood flaking machine has two or more continuous feed conveyors each of which has a vertical chute or feed box that brings wooden logs to an upper surface of the cutting disk. The drive motor for the disk is situated below the disk at the under side of the machine, so that the power train is from the bottom upwards.

Abstract: This invention relates to a process and an apparatus for achieving cost-effective and loss-free chipping of lumber which is supplied in lengths of the customary transportation width of approximately 2.50 m. According to the invention, the process comprises a loading operation in which a feed compartment which opens into a chipping space is loaded from above with a compact, aligned lumber pile and then a feed thrust acts directly on the lumber pile to cyclically load it into a chipping unit. The cyclic feed of the lumber pile continues with pieces of lumber of equal length being loaded while a pile for the next load is formed into another compact, aligned lumber pile. An apparatus comprises a loading magazine with pivotable load flaps forming a V-shaped bottom and arranged above a trough and a thrust plate longitudinally displaceable in a controllable manner to thrust lumber into a chipping compartment.

Abstract: Disclosed is a flaker for trunk and residual wood for the direct production of a mass of chips free of splinters and low in fines. Flaking takes place within a blade rotor equipped with a replaceable blade ring, which together with its housing may be moved back and forth in front of the outlet of a wood feed chute equipped with pressure elements. A compression chamber is located inside the blade ring, in which the wood to be cut intermittently abuts against a counter support. The compression chamber is equipped with additional pressure elements in order to hold the wood substantially still and without fluttering, until it is cut, without leaving a residue, even in the case of wood of large cutting width. The additional pressure elements act transversely to the counter support. A stationary, slightly raised entrance barrier is arranged directly in front of the compression chamber.

Abstract: Wood shavings suitable for use as absorbent bedding litter for poultry or other animals are produced at a high rate of production by a machine which includes an elongate open-bottomed stationary hopper adapted for receiving a supply of elongate wood pieces for being formed into wood shavings, with an elongate carriage positioned lengthwise beneath the elongate hopper and closely adjacent the open bottom thereof. A series of transversely extending rotating cutters is carried by the carriage at spaced locations along the length of the carriage, with the cutters being adapted for engaging the wood pieces in the lowermost portion of the hopper at spaced locations along the length of the pieces. The carriage is moved in a reciprocating manner over a predetermined relatively short stroke of movement substantially less than the length of the hopper and such that the cutters of the series collectively engage and form shavings from the elongate wood pieces over the entire length of the wood pieces.