Timber cutting and handling

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4.1
This subclass is indented under subclass 3.1.  Special work machine particularly adapted to (a) bring a tree down and manipulate a portion, (b) remove and manipulate the branches from a trunk of a tree, (c) remove and manipulate the bark from a tree or log without substantial shaping, or (d) treat a tree or product incidental to any of the above and manipulate a component thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

34.1,for a tree felling means, generally.
335+,for a method of tree harvesting or processing.

 
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Patent Number
Title
  Date
3937260 Log splitter Feb-10-1976
A log splitter and method for splitting logs, rails or the like, comprising a pair of double acting fluid cylinder operators in a parallel spaced side-by-side arrangement, which operators are interconnected by a butt plate extending therebetween against which one end of a log to be split may be butted....     
3939886 Tree harvester and processor Feb-24-1976
Apparatus for harvesting, delimbing and cutting trees into sections is disclosed herein. The harvesting apparatus includes grapple means and cutter means on a mast which is supported on a boom of a vehicle. The delimbing and cutting into sections is accomplished with a separate frame that may be in the...     
3941174 Debarking assembly for tree harvesters Mar-2-1976
A debarking assembly as part of a tree harvester or tree processing machine also including a drive mechanism for gripping and axially moving trees along a processing path, the debarking assembly including a plurality of generally L-shaped debarking blades having their respective cutting edges resiliently...     
3946775 Stump gripper Mar-30-1976
A gripping arm for addition to tree harvesting apparatus having chain saw means, the arm being operable in opposition to a tree engaging anvil. The arm is angled and pivotally mounted on the underside of the tree engaging anvil and adapted to be hydraulically operated by its own controls simultaneously...     
3946776 Dual shear blade assembly Mar-30-1976
A dual shear blade assembly for cutting through an article includes a frame having an outwardly opening article receiving slot therein, a first shear blade arrangement pivotally mounted on the frame and movable between an open position outwardly adjacent one side of the slot to a closed position within...     
3960371 Compact tree clamp Jun-1-1976
A tree clamp, especially for a tree length harvester, having a compact arrangement of a movable jaw which folds partially inside of a fixed jaw and has a pivoted section to clamp the tree. The movable jaw and its pivoted section also grasp the butt end of the tree and lift it out of the teeth of the...     
3968821 Tree felling device Jul-13-1976
A tree felling device comprising a spherical bowl carrying an endless saw chain along its peripheral edge and mounted to be moved a limited angle around the center of an imagined sphere in which it is included.
3970125 Tree cutting apparatus Jul-20-1976
Apparatus for cutting through a standing tree near the base by advancing a power driven blade transversely through the tree trunk. The blade has a leading edge along which a motor driven cutting element is journalled and the element is a shaft provided with helical flutes and wood chipping edges. A tree...     
3972357 Mobile delimbing and slashing machine Aug-3-1976
A machine for handling, delimbing and slashing felled trees, including hardwood trees, including a first crane for lifting a tree and inserting it into delimbing apparatus comprising an array of helically bladed cylindrical rotating delimbing augers with their axes disposed at right angles to the travel...     
3976111 Tree-cutting device for lumbering machine Aug-24-1976
A tree-cutting device for lumbering machines comprises a holder structure capable of being brought into contact with a tree to be felled, a swingable chain saw operable to saw only partially through the trunk of said tree, and a movable sharp-edged cutting blade operable to subsequently cut off the remainder...     
3981336 Tree harvester Sep-21-1976
The following specification discloses a tree harvesting apparatus controlled from a light weight tracked vehicle having a rotatable platform for holding a boom apparatus to which a harvester head is hingeably attached. The harvester head comprises shearing means and delimbing knives mounted to a support...     
3986542 Tree harvester Oct-19-1976
A mobile tree harvester, especially on a wheeled frame, having tree severing, transferring and delimbing apparatus or processes combined. Specifically a harvester operating to cut, manipulate or transfer from a vertical to horizontal position and delimb full length trees at the site. Standing trees are...     
3989074 Multiple cut feller Nov-2-1976
An automatic tree felling machine is provided. In one embodiment, the machine consists of a self-propelled vehicle having a plurality of automatically operated felling heads, a grapple bunk for skidding felled trees and a plurality of transfer grapples for transferring trees from the felling heads to...     
3995671 Shear-mechanism-tree harvester Dec-7-1976
A shear mechanism includes shear members pivotally mounted to a first frame, with a second frame movable relative to the first frame, and first and second links connected to the second frame. The first and second links are also connected to the first and second shear members, and first and second cylinders...     
3996981 Tree felling apparatus Dec-14-1976
A preferably tractor-mounted tree felling apparatus comprising two saw chains on guide bars arranged to be moved towards one another to cut through the tree while the latter is gripped by gripping jaws. The two saw chains are arranged to move in the same direction at the tree trunk center with the teeth...     
3996982 Shear assembly for tree harvester Dec-14-1976
A shear assembly suitable for use with a tree harvesting machine including a shear support frame, a pair of blade arm assemblies, each carrying a shear blade, a hydraulic motor connected between the shear frame and each of the blade arm assemblies for opening and closing the shear assembly, and hydraulic...     
4004622 Harvester processor assembly Jan-25-1977
An apparatus for mounting on the free end of an extendible and retractable boom for handling trees comprising a first rigid frame assembly, a second frame assembly mounted on said first frame assembly at one end thereof and having a pair of arms pivotally mounted thereon, and a third frame assembly mounted...     
4013106 Flywheel tree feller and buncher Mar-22-1977
A flywheel tree feller is slidably mounted in a base and comprises a combination drive and saw chain peripherally engaging and driving a circular saw bar sprocket in flywheel rotation with no relative rotational motion therebetween. The circular saw bar sprocket is the outer flywheel race of a ball bearing,...     
4022259 Tree shear May-10-1977
A tree shear having two movable shear arms pivoted about a common horizontally disposed axis. Shear blades are rigidly connected at the lower ends of the shear arms and arranged in confronting relation to shear the tree when they are moved toward each other by a power actuator.
4023603 Tree top ejector May-17-1977
An improved harvesting and processing apparatus for trees is provided. The harvester is of the type having a gripping means disposed adjacent its forward end and a boom along its longitudinal axis. A shear and delimber associated with the apparatus are longitudinally movable relative to the boom. The...     
4041998 End-jointing of timber Aug-16-1977
A method of joining pieces of timber which comprises cutting arcuate grooves in the ends of two pieces of timber to be joined, adjacent grooves being separated by arcuate fingers, and adhering together the pieces of timber with the fingers of each piece being received in the grooves of the other piece....     
4044804 Tree shearer Aug-30-1977
A shearing device is disclosed for severing trees and the like. The device is vehicle mounted, preferably on the front of a tractor, so that forward movement of the tractor causes shearing of a tree in contact with the device. The device includes a frame member with a pair of forwardly extending spaced...     
4044806 Tree processing machine Aug-30-1977
A tree processing machine for felling and processing standing trees into predetermined lengths which includes generally a prime mover capable of turning in a short radius with a relatively short support frame as compared to the prior art mounted on the prime mover, a carriage frame pivotally mounted...     
4046179 Cross-cut shear for trees Sep-6-1977
A cross-cut shear for trees including a support. A pair of cutting blades each having an arcuate cutting edge terminating in a straight cutting edge tangential to the arcuate cutting edge, the blades pivotally mounted on the support for pivotal and guided movement to bring the blades toward one another...     
4053005 Method of harvesting trees Oct-11-1977
A method of harvesting trees, by engaging separately between a pair of jaws adapted to pivotally open and close, the jaws having vertically spaced, tree-engaging double edges; by cutting the engaged tree between the double edges, the cut tree being held in place by the pair of jaws bridging the cut;...     
4067368 Cabin log shaper Jan-10-1978
An elongated base is provided including elongated guide structure extending therealong. A router assembly is supported from the guide structure for guided movement therealong in a predetermined path and the base includes support structure for supporting an elongated log in position extending along a...     
4069847 Tree shear with spherical blades Jan-24-1978
A tree-shear apparatus includes two blades, each having a spherical blade portion. The blades are pivotally mounted relative to a frame, with the pivot axes of the blades and the radii of the spherical blade portions being arranged to provide that a true spherical cut of a tree is achieved.
4069848 Tree shearing device Jan-24-1978
This invention relates to an improved shearing device to be mounted on a tree harvesting vehicle having a pair of blade edges which move through inward downward directed arcs in shearing the tree. This movement provides the advantage of reducing cracking or splitting of the butt end of the cut log and...     
4076060 Energy saving tree harvester Feb-28-1978
An improved tree harvesting device of the swing boom type has an energy conserving drive mechanism for driving the swing boom. The energy conserving mechanism uses an energy storing means located between a prime mover and the swing boom; the energy storing means stores the energy dissipated by the swing...     
4077445 Hydraulic circuit for tree harvester Mar-7-1978
In a tree harvesting machine having a shear assembly, a delimbing assembly, a drive mechanism for moving a tree past the delimbing assembly, and a grapple arm for urging the tree into engagement with the drive mechanism and the delimbing assembly, a hydraulic control circuit including a pair of control...     
4077446 Tree shear actuator restraint system Mar-7-1978
A tree shear head includes a frame which supports a pair of parallel crank shafts which are respectively linked to a pair of shear blades for moving the latter together into the trunk of a tree being sheared. The crank shafts are rotated by means of an actuator including a cylinder in which a pair of...     
4077447 Tree shear actuator restraint system Mar-7-1978
A tree shear head includes a frame which supports a pair of parallel crank shafts which are respectively linked to a pair of shear blades for moving the latter together into the trunk of a tree to be sheared upon rotation of the crank shafts. The crank shafts are rotated by means of an actuator including...     
4078592 Log feed mechanism for sawmills Mar-14-1978
A log feed mechanism that will longitudinally move successive logs toward the cutting and/or chipping mechanisms of a sawmill while holding the successive logs along a prescribed path of movement such that the successive logs may be efficiently sawed into standard size lumber. The feed mechanism includes...     
4083463 Suspension device for felling unit Apr-11-1978
According to the invention, a tree-felling unit is suspended on a crane boom by a device comprising a rotor pivotally suspended on the boom and carrying the felling unit by way of a link member.
4088163 Tree shearing device May-9-1978
A tree shearing apparatus is provided which cuts virtually all of the wood fibers at an oblique angle thereto thus reducing power requirements by improving the shearing action. Upward compression and/or splitting forces on the trunk are very significantly reduced as compared with the prior art devices...     
4095631 Holding arm Jun-20-1978
An accumulating mechanism is provided for use in conjunction with a shear mechanism used in forestry applications. A tree harvesting apparatus employs a shear mechanism to cut the trees, a grapple mechanism to hold the trees while they are being cut, and an accumulator mechanism to accumulate several...     
4108224 Tree shear tilting mechanism Aug-22-1978
A vehicle has a tree shear mechanism mounted thereto, which is raisable and lowerable relative to the vehicle. The tree shear mechanism may also be tilted about a longitudinal axis of the vehicle so that with the vehicle on ground of one level and slope, and the tree to be sheared on another ground level...     
4124047 Arrangement for harvesting timber Nov-7-1978
An arrangement for harvesting trees consisting of a portable articulated grapple suspension and an independent cutting and delimbing unit comprising a main frame resting on the ground and a tree-engaging frame pivotally mounted to said main frame. The portable suspension is attached to a motor vehicle...     
4127152 Mobile tree processor Nov-28-1978
An articulated boom assembly is mounted on a vehicle for swinging movement about a vertical axis. A shear-grapple unit is pivotally attached to the free end of the boom assembly so that after a standing tree has been cut, it may be tilted from a vertical position to a horizontal position. When the cut...     
4127154 Tree harvesting apparatus Nov-28-1978
Tree harvesting apparatus adapted to be fitted to conventional vehicle for use in relatively hilly terrain. The apparatus has holding and cutting means including a main post carrying upper and lower grapples to hold tree, and cutting means disposed below the lower grapple. Post is mounted on a hinge...     
4131145 Tree cutting device Dec-26-1978
A tree cutting device comprises two opposed curved knife blades, each defining a portion of a surface of revolution. Swingable arms for the curved knife blades are journalled on separate shafts which are arranged with their axes in a common plane inclined relative to the center line of the trees to be...     
4144918 Tree harvester and transporter Mar-20-1979
A mobile tree harvester includes a shear mounted at the base of a harvesting frame for shearing a tree trunk, a grip arm pivotably mounted to the frame above the shear for gripping the tree trunk, delimbers mounted above the grip arms for removing branches from the trunk, and an endless tract mounted...     
4147191 Tree shearing apparatus Apr-3-1979
Apparatus for felling trees by shearing them off near ground level has a frame which supports, at its upper and lower ends respectively, tree holding and shearing mechanisms. The shearing mechanism includes a housing supporting a pair of shears which cut slightly downwardly as they are closed upon a...     
4147194 Traveling hose system Apr-3-1979
A method and apparatus for installing a traveling hose array in a mobile tree harvester. One end of the hose array travels with the extensible delimbing head of the harvester, and a hose reeving system including a movable trolley is provided to maintain a constant hose length. The hoses are pretensioned...     
4148526 Apparatus for sorting trees Apr-10-1979
Apparatus is provided for sorting trees in situ in the forest immediately after being cut, the steps of limbing and topping optionally being included prior to the sorting operation. To this end a vehicle is provided having at least four dumping bunks. Trees of different sizes or species are loaded into...     
4153086 Auger-type tree cutter May-8-1979
A tree cutter mechanism adapted for mounting on a suitable vehicle includes a frame defining a U-shaped opening for embracing a standing tree, a rotating auger cutter slidably mounted on the frame for selective linear movement across the U-shaped opening to sever trees disposed therein, and a tree drive...     
4161200 Tree harvester and buncher Jul-17-1979
An improved harvester and buncher of the horizontally articulated type having base and upper structure such as described in my prior invention of Apparatus and Method of Felling and Bunching Trees, U.S. Pat. No. 3,991,799. Base structure has been reshaped forwardly as a three dimensional wedge for the...     
4164246 Tree processing machine Aug-14-1979
A tree processing machine for felling and processing standing trees into predetermined lengths which includes generally a prime mover capable of turning in a short radius with a relatively short support frame as compared to the prior art mounted on the prime mover, a carriage frame pivotally mounted...     
4167961 Planer and groover Sep-18-1979
A machine for planing and grooving a workpiece, such as a log, in a single pass, comprising a frame, a top grooving cutter adjacent one end of the frame, a top planing cutter and a bottom planing cutter in the frame, and a bottom grooving cutter adjacent the other end of the frame, with feed rolls ahead...     
4221246 Floor joist machine Sep-9-1980
A machine for cutting tenon ends on logs to be used as floor joists, the machine including transfer devices for depositing each log on a pair of conveyor belts, cut-off saws for cutting the log ends to a fixed length, sets of parallel and angled saws for cutting tenons on both ends of the log, and delivery...     
4226270 Tree harvester Oct-7-1980
A tree harvester includes a wheeled and articulated frame, a horizontally disposed first elongated beam member, an extendable beam member that is longitudinally extendable from the first beam member, a carriage that is longitudinally movable on the extendable beam member, delimber knives that are mounted...     
4230163 Log-planing machine Oct-28-1980
Apparatus for surface cutting logs to provide a finished surface corresponding to the natural surface contour of the log or to impart a predetermined distinctive surface contour thereto and a method of effecting such surface contouring; said apparatus comprising log guiding and feeding means for moving...     
4243082 Rafter side slotter Jan-6-1981
A machine for cutting one or two slots in the sides of a log intended for use as a roofing rafter, the machine including a pair of dado saws, means for moving the saws up and down past the sides of a log, and supports for the saws which are adjustable to coordinate the angle of the cuts with the angle...     
4243258 Tree harvester Jan-6-1981
PCT No. PCT/US79/00131 Sec. 371 Date Mar. 5, 1979, Sec. 102(e) Date Mar. 5, 1979 PCT Filed Mar. 5, 1979 PCT Pub. No. W080/01865 PCT Pub. Date Sept. 18, 1980. A tree harvester (12) is provided with an apparatus (20) for accumulating trees, one at a time. The apparatus includes a single, multiple accumulator...     
4254807 Tree harvesting apparatus and method Mar-10-1981
A tree harvesting apparatus includes a vehicle driven by an engine with first and second arm members pivotally supported on the vehicle and normally biased to a first position defining an open pocket for receiving a standing tree. Cutter means associated with the arm members sever the standing tree as...     
4274457 Tree shear blade structure Jun-23-1981
Bolts detachably mount a thin tree-shearing blade on a peripheral reinforcing blade carrier swingably mounted on a tractor. The plunger of a hydraulic jack is connected directly to the blade, independently of the blade carrier, for swinging the blade to shear a tree. The force applied by the jack to...     
4276918 Tree processing unit Jul-7-1981
A tree processing unit having a base and a boom with a front end and a back end, extending through the base. Means are provided for moving the boom through the base the base has means for gripping a tree at its butt end. Means are fixed on the front end of the boom for gripping and debranching the tree,...     
4301845 Tree shear Nov-24-1981
A tree shear comprises a base with a tree receiving position. There is an undercutting blade mounted on the base for making a groove extending partway through a tree from one side of the tree and thereby inducing a bending of the tree trunk and putting under tension fibres in the tree trunk near the...     
4313479 Draw shear Feb-2-1982
A tree harvesting machine is disclosed in which a grappling arm functions to reach behind a tree and draw the machine forwardly to force a shearing blade through the tree close to the ground. The harvester frame holds the severed tree and includes spring-loaded holders which allow the tree to enter the...     
4350190 Self propelled, off road vehicle Sep-21-1982
The invention relates to a unique self propelled vehicle capable of transporting massive loads over natural terrain, such as the loading and transporting whole trees from their growing site to a processing station. The invention provides a vehicle having an elongated rigid frame element supported by...     
4371017 Forest thinning device Feb-1-1983
The invention relates to a forest thinning device for forest working vehicles with an operator's cabin (2) and a crane beam (13) operated from this cabin, at the end of which a felling and gripping aggregate (14) is mounted. A markedly greater reach and increased operating possibilities at forest thinning...     
4392520 Log building construction Jul-12-1983
The invention relates to a machine for end notching logs and to a method for end notching logs so that they can be incorporated into an interlocking corner configuration in a log cabin building. The corner construction is of the 1/2 dovetail configuration and the machine is designed to make one notch,...     
4399848 Tree cutting mechanism Aug-23-1983
A cutter vehicle is arranged to be moved along a row of trees by a powdered drive vehicle. A boom assembly is secured between the cutter vehicle and the drive vehicle and has relatively movable parts which can extend and retract to vary the longitudinal length of the boom assembly. The cutter vehicle...     
4407343 Tree feller with gravitational buncher Oct-4-1983
Described herein is a vehicle-mounted tree harvesting machine. The tree harvesting machine includes a shear which cuts the trees and is arranged so that its cutting motion tends to direct the trees to fall by gravity into a bunching means in alignment with the shear. Once in the bunching means the cut...     
4412569 Tree harvesting methods and machines Nov-1-1983
This invention concerns a method of tree harvesting which in its simplest form provides for a method of delimbing the branches of a standing tree, which delimbed tree may be sheared off from its base and positioned in a stack for collection. There is provided an apparatus for attachment to a prime mover...     
4416311 Tree harvester Nov-22-1983
A tree harvester of the type having a grapple assembly, shear assembly and de-limbing assembly where the grapple assembly and the de-limbing assembly are mounted on respective telescopically slidable carriers. Cables connect the de-limbing assembling (or grapple assembly) to the grapple carrier (or de-limbing...     
4434827 Tree feller-buncher Mar-6-1984
Method and apparatus for felling and bunching trees is provided by means of a support mounted on a vehicle and a carriage mounted for movement along the support in a horizontal direction substantially perpendicular to the direction of movement of the vehicle. The carriage mounts a tree cutting mechanism...     
4452286 Apparatus for cutting tree parts Jun-5-1984
Apparatus for cutting tree parts adapted to be operatively mounted on vehicles including a base structure configured to define a concave cutting recess for receiving therein the tree part to be cut with at least one pivotable holding arm adapted to grip a tree part engaged within the cutting recess and...     
4467849 Felling head Aug-28-1984
A felling head for use in harvesting trees. The felling head carries a pair of circular saws and means for positioning and gripping a tree to be felled. The saws are rotated and moved relative to the positioning and gripping means to, between them, cut through a positioned and gripped tree.
4519429 Log shaper May-28-1985
A machine for forming a smooth surface on a cylindrical log workpiece as it is moved longitudinally past a cutting station which includes both shaping and planing blades. The same cutting pass also includes a cove cutting operation to cut a longitudinal cove cut on the surface of the log workpiece and...     
4537236 Grab harvester Aug-27-1985
A grab-type tree harvester for processing trees comprises rotation means and a frame. The frame is connected to lifting means through the rotation means, in a manner such that the frame is adapted to rotate about a substantially vertical axis. The frame comprises grab means which are selectively moved...     
4540032 Tree harvesting machine Sep-10-1985
A tree harvesting machine is disclosed which is of the type having a wheel-mounted frame, a tree harvesting mechanism at the front and a berth at the rear for accumulated felled trees. An inverted tree grapple is provided forwardly of the berth and is mounted to the berth so that it can be slid to and...     
4540033 Continuous tree harvester Sep-10-1985
A tree harvesting device which continuously severs and collects trees in a motion which is not governed by the motion of the carrier vehicle is described. The carrier vehicle moves from tree to tree in a continuous motion while the severing mechanism severs each tree in turn and then loads the cut trees...     
4552191 Tree harvesting device Nov-12-1985
Tree harvesting device is connected to a mobile vehicle by means of a jib (1) and comprises means for cutting, felling and debranching a tree. The device (2) has a general U-shaped frame comprising two side parts (3, 4), rear part (5) and an open front side (6). The cutting means (7, 8), the conveying...     
4565486 Device for handling material Jan-21-1986
A device for handling material is shown according to the teachings of the present invention in its preferred form as a mobile tree felling and handling device. In its preferred form, the device includes a mid-frame pivotally mounted to the device frame about a pivot axis which is perpendicular to the...     
4569379 Tree harvester Feb-11-1986
A tree harvester of the type having a grapple assembly, shear assembly and de-limbing assembly where the grapple assembly and the de-limbing assembly are mounted on respective telescopically slidable carriers. Cables connect the de-limbing assembling (or grapple assembly) to the grapple carrier (or de-limbing...     
4579157 Mobile forest thinning machine Apr-1-1986
The invention relates to a mobile thinning machine. It comprises according to the invention a two-wheeled drive unit (1) with motor and hydraulic unit and a logging unit (2) carried on a dirigible and driven supporting wheel (5), with driver's cab (8), pivotal boom (13), felling unit (15) and clamping...     
4583908 Mobile device for handling material Apr-22-1986
A mobile device for handling material of various types including a frame having an endless track mounted on each side thereof for providing mobility to the frame. A source of power in the form of an internal combustion engine is mounted directly on the frame. A turntable is rotatably mounted on the frame...     
4592398 Continuous tree harvestor Jun-3-1986
A tree harvesting apparatus which allows continuous travel through the trees, cutting them, accumulating them into bundles, and unloading the bundles without stopping.
4606694 Load skidding vehicle Aug-19-1986
Load skidding vehicles commonly include a grapple assembly (42) which under load conditions can pivot rearwardly about its support point (52) resulting in disproportionate loading of the rear wheels and consequently instability of the vehicle. A connecting member (62) is pivotally attached between the...     
4653555 Feller-forwarder Mar-31-1987
A tree cutting and collecting apparatus. The apparatus comprises a boom and means intermediate the ends of the boom for use in mounting the apparatus on a vehicle for rotation about an upright axis. A circular saw is mounted at one end of the boom to cut down trees as the apparatus is rotated. A tree...     
4727916 Tree harvester Mar-1-1988
A tree harvester comprises a head boom at the lower free end of which is mounted a tree felling head having a cylindrical cutting knife behind which is formed a storage area for felled trees. The head includes pivotable gripping arms for pressing the trees to be felled against the cylindrical knife and...     
4763742 Tree feller-buncher Aug-16-1988
A four track vehicle especially adapted for logging on steep slopes includes a running unit and an upper unit. The upper unit is articulated relative to the lower unit to maintain a center of gravity within the four tracked pods upon which the running unit is mounted. Sensing systems are utilized to...     
4779654 Tree harvesting Oct-25-1988
A tree harvester (3) is mounted on the front end of a steerable self-propelled vehicle (2) in line with the vehicle's longitudinal axis (8). The harvester frame (11) is pivotable about a longitudinal axis (13). A telescoping boom (15) having a plurality of grab jaws (24, 25) at one end is mounted on...     
4781228 Tree pruner Nov-1-1988
A mechanized tree pruner is mounted on the boom of a prime mover so the pruning head can be moved up and down a standing tree. The head is comprised of a main frame on which is mounted two delimbing stations each of which has a pair of movable delimbing knife chains mounted on grapple type arms. Below...     
4793389 Tree harvester Dec-27-1988
A tree harvester comprises a head boom at the lower free end of which is mounted a tree felling head having a cylindrical cutting knife behind which is formed a storage enclosure for felled trees. The head includes pivotable gripping arms for pressing the cylindrical knife against the trees to be felled...     
4817692 Ring saw Apr-4-1989
An improved ring saw having a disk-shaped saw body with a cutting ring mounted to rotate about the saw body. The cutting ring has an inwardly directed flange that fits within a slot in the peripheral edge of the saw body. Cutting teeth are mounted in the ring. Drive means mounted on the saw body rotate...     
4823849 Wood processor Apr-25-1989
A wood processor for felling, delimbing and cutting tree-trunks includes a system of arms containing at least two beams (10, 12) mutually movable in the longitudinal direction, one in the other. The wood processor also includes a unit composed of a delimbing head (13) and a felling head (14) attached...     
4823852 Tree feller-buncher Apr-25-1989
A four track vehicle especially adapted for logging on steep slopes includes a running unit and an upper unit. The upper unit is articulated relative to the lower unit to maintain a center of gravity within the four tracked pods upon which the running unit is mounted. Sensing systems are utilized to...     
4848424 Vehicle mountable tree felling apparatus Jul-18-1989
A tree felling apparatus mountable to a vehicle includes a frame defining an opening for receiving a tree and a chain saw mounted for linear movement across the opening for felling the tree. One side of the opening is defined by an anvil having a sharpened edge for increasingly engaging the tree as the...     
4850405 Log delimbing and cutoff device Jul-25-1989
A wheeled trailer provides carriage for a delimbing member having associated means to move a log therethrough and a cutoff member to cut delimbed logs to merchandizable lengths. The vehicle is propelled by a separate tractor and logs are presented to and removed from the mechanism by separate log handling...     
4871003 Log surface hewing process Oct-3-1989
A process for reconfiguring the surfaces of a construction log (10) used in the construction of log structures to produce a log having the appearance of a hand-hewn log. The process includes a first step (30) of chamfering at least the upper and lower forward edge portions (22 and 24) of the log body...     
4881584 Infeed conveyor for saw Nov-21-1989
The invention is an infeed conveyor for a saw which enables feeding sweepy cants or logs in such a manner as to achieve a significant improvement in lumber recovery. The conveyor has at least one portion which can be configured between a straight line track and a curve which approximates an arc of a...     
4881865 Forest machine with crane Nov-21-1989
A forest machine with a crane comprises a driver's cab (2) which is mounted on a wheeled chassis (1) and behind which a load carrier (3) is placed, and a crane post (10) mounted in association with the cab and rotatable relative to the chassis and carrying an outer boom (11) having a telescopic boom...     
4889169 Combination log debarker-chipper Dec-26-1989
A combination log debarking, log chipping unit having a debarking apparatus and a chipping apparatus mounted on a common chassis, the two apparatus are aligned for conveying logs from the debarking apparatus to the chipping apparatus. The two apparatus are separated by a space of about 6-10 feet to permit...     
4908946 Wood cutting shear Mar-20-1990
The present invention relates to heavy duty wood cutting shear attachments of a large scale for connection to a boom structure of a hydraulic excavator for cutting tree stumps and the like. The wood cutting shear includes a swingable jaw and a stationary jaw. The swingable jaw has a C-shaped frame with...     
4911215 Tree feller-chipper Mar-27-1990
A method and apparatus are provided for felling and chipping trees, all on a single vehicle, including mounting a grapple and a shear on a connector, mounting the connector to a boom, engaging a tree with the grapple and shear, shearing the tree, moving the tree to a table, moving the vehicle forward...     
4913203 Tree harvester Apr-3-1990
A tree shear is disclosed which has a frame on which is mounted a pair of blades for pivotal movement relative to one another in scissors fashion; the blades being pivoted by hydraulic jacks. Each blade pivots on a rotary shaft having an eccentric center portion, each blade being mounted on the eccentric...     
4947904 Apparatus for stacking bolts Aug-14-1990
The stacker comprises a receiving bin adapted to position bolts close to the ground in an orientation that is perpendicular to the direction of advance of the stacker. The bin has side walls that closely confine the two ends of the bolts. A reciprocating plunger at the base of the bin biases the bolts...     
4971125 Shake fabricating process Nov-20-1990
A shake fabricating process for producing roofing shakes from wood is provided. In accordance with the process a log is stripped of its bark and cut into bolts having a preselected length corresponding to the desired length of the shakes to be produced. The bolts are then cut in half, or in quarters,...     
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