Abstract: A saw chain rivet is provided including a flange, and a hub extending from a side of the flange. A shoulder defined by a junction between the hub and the flange has properties optimized to resist shear forces. The hub may be optimized for ease of rivet head formation.

Abstract: Hardened cutter elements commonly called cutters used in saw chains to act as cutter links. The hardened cutters have hard insets applied and connected to the cutting face of the cutter. The insets are made of a hard, tough material, such as a suitable carbide. Also shown are saw chains having the hardened cutter links with the hard insets. The preferred insets include a rear portion having a semi-cylindrical attachment surface. The attachment surface is configured for attachment to a filed or ground cutting face of a conventional saw chain cutter. A front portion of the inset has a cutting face which is provided with beveled cutting face corners and preferably chamfered edges extending rearwardly from the inset cutting face. Methods of producing the cutters with insets and for producing saw chains with the hardened cutters are also described.

Abstract: In various embodiments, a saw chain is provided that includes a rail engaging link that has an offset footprint within the link itself and/or with respect to other links in the chain that are adapted to ride on the same rail. Saw chains as provided may be used in a variety of applications, including but not limited to wood cutting and aggregate cutting applications.

Abstract: Embodiments of the invention disclose a cutter link adapted to move in a cutting direction along a guide rail of a guide bar. The cutter link includes a cutting portion that tapers from a leading portion adjacent a sharpened edge to a trailing portion rearward of the leading.

Abstract: A connecting link (4, 34) for a saw chain (1) of a motor-driven chain saw has an areal base body (24) which has two rivet openings (12, 15). The connecting link (4, 34, 44) has a longitudinal center axis (11) which intersects the axes (13, 16) of rivet openings (12, 15) and runs in the base body (24). The functional regions of the connecting links (4, 34, 44) are mirror symmetrical to planes (32, 36), which contain the longitudinal center axis (11), and are unsymmetrical to each plane perpendicular to the longitudinal center axis (11). In this way, the connecting link (4, 34, 44) can be arranged on both longitudinal sides of the saw chain (1).

Abstract: Embodiments of the disclosure provide a saw chain having cutter links having a cutting edge on a first end and an opposite second end adapted for riding on or along a rail of a guide bar. First drive links are coupled with the cutter links and are adapted to ride in a groove of a guide bar. The first drive links have a clean out tang sized and shaped to scoop debris from within the groove, and have two first drive link side surfaces on opposite sides thereof adapted to have at least occasional wearing contact with interior side walls of the groove. Second drive links are coupled with the first drive links and the cutter links, and are adapted to ride in the groove of the guide bar. Each second drive link has second drive link side surfaces adapted to have at least occasional wearing contact with the interior side walls of the groove. The second drive link side surfaces have a greater surface area than the first drive link side surfaces, and in some embodiments may be featured rudder links.

Abstract: A saw chain is provided that has a plurality of cutter links coupled to an opposing tie strap, where the cutter link has a portion that protrudes past the tie strap to enable pivotal movement of the cutter link toward a central longitudinal axis of a guide bar.

Abstract: Safety chain and rotatable devices for saws include a plurality of base members on which sharp members are retained. The sharp members include sintered particulate material such as tungsten carbide, which has high particle hardness. The base members are formable from sintered particulate material. The sharp members to be formed by powder metal molding, metal injection molding or investment casting to provide the protrusion and recess with a final net shape. The cutting member is one, two or more pieces, and is permanently bonded to or removably disposed on the base member. Bonding material or fasteners can connect the cutting member to the base or a tip to an insert body; bonding material includes cement, solder, braze and polymer. Safety lobes prevent the teeth from being dislodged.

Abstract: A saw chain for a power chain saw is provided and comprises drive links and side links that connect them, whereby alternatingly disposed on one and the other longitudinal side of drive links, in place of a side link, are a cutter link and a leading safety link. The cutter link has a cutter tooth and a leading depth limiter, whereby the safety link is provided with a projecting nose for support against the base of a cut. The nose extends in the direction toward the depth limiter. The safety link is provided with a side portion disposed in front of the nose. The side portion has an elevated contact surface, which, when the saw chain is curved in the reversing region, is disposed on the path of a top cutting edge of the cutter tooth, and when the saw chain is extended reaches at least nearly to the height of the depth limiter.

Abstract: A saw chain for a motor-driven chain saw (1) is formed from center drive links (10) and lateral connecting links (11). A first radius (18) is the maximum distance of the axis (22) of the leading rivet opening (12) to the region (19) facing toward the forward running surface and lying in the running direction. A second radius (20) defines the maximum distance from the axis (23) of the trailing rivet opening (13) of the connecting link (11), which is next adjacent in the running direction (8), to the region (21) of the connecting link (11). The region (21) lies facing toward the rearward running surface (17) opposite to the running direction (8). The second radius (20) is greater than the first radius (18) and the sum of first radius (18) and second radius (20) corresponds approximately to the distance (b) of the axes (26, 27) of the rivet openings (24, 25) of a drive link (10) arranged between the connecting links (11).

Abstract: A saw chain for a chain saw including alternating center and side link pairs with certain of said side links being cutting links and certain of said center links preceding said cutting links having guard portions to inhibit kick back. Said guard portions including a forward and rearward guard portion, the rearward guard portion in overlapping relation with a depth guide of the cutting link. A relief spacing between the guard portions facilitates chip carriage and the guard portions cooperatively form a ramp to guide wood being cut over and onto the depth gauge for controlling the depth of cut taken by the cutting link.

Abstract: A saw chain for a motor-driven chain saw (1), including for a harvester for the lumber industry, is formed from center drive links (10) and lateral connecting links (11). The drive links (10) and the connecting links (11) are pivotally connected to each other via rivets (9). The connecting links (11) are configured, in part, as cutting links (14). These cutting links include a cutting tooth (15) and a forward running surface (16) and a rearward running surface (17). The forward running surface (16) is approximately at the elevation of the leading rivet opening (12) and the rearward running surface (17) is approximately at the elevation of the trailing rivet opening (13). The rearward running surface (17) is configured extended in a direction opposite to the running direction (8) of the saw chain (5). A first radius (18) is the maximum distance of the axis (22) of the leading rivet opening (12) to the region (19) facing toward the forward running surface and lying in the running direction.

Abstract: A saw wire according to the invention has two parallel wire strings having a number of saw elements evenly distributed along the wire strings. A saw element includes a platform and a cutting plate. The platform has grooves intended to receive respective parallel wire strings and a groove which is open towards the bottom to receive a driving wheel and a pulley.

Abstract: A cutter device has a cutter portion which is led by a depth gauge. The depth gauge is mounted on and extends upwardly from a substantially planar main body section. The depth gauge has a forward, or first section which extends upwardly from the main body, and when viewed from above is disposed at an angle relative to the central plane of the main body diverging therefrom on progressing rearwardly. The rear end of the first section is connected at a juncture section to a second section which progresses rearwardly and is disposed at an angle converging toward the central plane. The second section may extend across the plane of the body and diverge from the opposite side thereof on progressing rearwardly. The upper surface of the depth gauge presents a sweeping curve as viewed from the front of the cutter which is a multiple of the thickness of the body to which it is attached to provide effective cut control for the following cutter.

Abstract: A saw chain formed in part from planar cutting link blanks including a cutter portion having a top edge surface and a side surface that intersect to form a line edge. A leading portion of the cutting link blank is twisted out of the plane of the blank so that the line edge becomes the cutting edge of the cutter and extends from the plane of the body to encompass the width of one side of the saw chain. Alternating cutting link are formed to have oppositely extended cutting edges to encompass the width of the saw chain. The cutting links preferably form certain of the center links of an assembled saw chain.

Abstract: A high speed harvester cutting chain has increased cutter height to provide an increased space for removal of the cut material from the saw kerf. The increased height of the cutter links eliminates the compacting of the material cut away by the cutter links between the saw chain and the base of the saw kerf. The foot of the cutter links are flared outward to contact the guide bar rails at a different position than the tie straps to increase the wear life of the guide bar and saw chain.

Abstract: The invention is directed to a saw chain for a motor-driven chain saw comprising center drive links and lateral connecting links which are pivotally connected to each other via rivets lying transversely to the longitudinal direction of the chain. Individual connecting links are configured as cutting links and have a cutting tooth with a roof bent over toward the chain center. The roof has a leading edge and a trailing edge which lie each transverse to the longitudinal direction of the chain. The leading edge is configured as a roof cutting edge and lies higher than the trailing edge which lies at a spacing above a depression. The depression is formed in the region between the rivet holes in the adjacent upper edge of the drive link and delimits a chip channel. The recess is formed asymmetrically on a drive link with respect to the center perpendicular of an imaginary connecting line between the center points of the rivet holes.

Abstract: A cutting member for cutting hard materials such as rock, concrete, etc., includes a support unit in the shape of a wire. The free ends of the wire are joined together to form an endless unit. Cutting elements are provided at regular distances from each other along the full length of the wire. Each cutting element is firmly connected to a cutting element carrier and supported on the wire and at least in the mounted condition is firmly connected to a rider for guidingly engaging a portion of a saw. Driver members are attached to the wire and the cutting element carriers are floatingly supported on the wire in functional engagement with the driver members.

Abstract: A chain saw comprises interconnected center links and side links. The side links include front and rear heels having front and bottom contact surfaces, respectively, which slidably engage an edge rail of a chain saw guide bar. The bottom contact surface of at least one of the heels includes a recess formed therein. The recess has an open front end and a closed rear end. The recess is of less width than a width of the respective bottom contact surface, whereby portions of the contact surface straddle the recess. The depth and width of the recess gradually decrease from the front end toward the rear end. During a cutting operation, lubricant enters the recess and creates a pressure which lifts the heel slightly off the rail, eliminating metal to metal contact.

Abstract: A saw chain for cutting aggregate material has sealing members to seal the pivotal connection between the center drive links and the rivets to prevent entry of contaminates into the bearing surfaces. In one arrangement, O-rings are mounted in grooves of the tie straps with the O-ring being compressively forced against the center drive link. The O-ring prevents entry of contaminants into the bearing surface between the bore of the center drive link and the rivet. In another arrangement spring type cup washers fit in a groove of the tie straps and the cup washers are biased against the center drive link.

Abstract: The cutting member for a saw chain of a motor chainsaw has a base body with a rear portion and a leading portion in a cutting direction of the cutting member. The rear portion and the leading portion extend in the center plane. The base body has rivet openings. The cutting tooth is formed at the rear portion and the depth limiter is formed at the leading portion. The leading portion has a support stay formed by bending at a bending line an upper end portion of the leading portion in a direction out of the center plane. The free end of the upper end portion is bent in a second direction opposite the first direction back across the base body to form an overhang. The overhang has a forwardly and downwardly slanted surface facing away from the base body. The overhang has a length in the cutting direction that is smaller than the width of the support stay. The support stay has a stay edge facing the cutting tooth. The overhang edge has a greater spacing to the cutting tooth than the stay edge.

Abstract: A cutter device has a cutter portion which is led by a depth gauge. The depth gauge is mounted on and extends upwardly from a substantially planar main body section. The depth gauge has a forward, or first section which extends upwardly from the main body, and when viewed from above is disposed at an angle relative to the central plane of the main body diverging therefrom on progressing rearwardly. The rear end of the first section is connected at a juncture section to a second section which progresses rearwardly and is disposed at an angle converging toward the central plane. The second section may extend across the plane of the body and diverge from the opposite side thereof on progressing rearwardly. The upper surface of the depth gauge presents a sweeping curve as viewed from the front of the cutter which is a multiple of the thickness of the body to which it is attached to provide effective cut control for the following cutter.

Abstract: A plate-joinery system includes a chain-saw plate joiner where the cutting mechanism includes a cutting-chain driven about a saw-bar. The cutting mechanism of the chain-saw plate joiner may be advanced on rails to one of a set of predetermined depths. The increased recess depth allowed by the chain-saw and the resultant increase in both glueable surface area and mechanical engagement permit high-strength right-angle joints to be made with the speed of conventional plate-joinery. Plate-joints of more conventional proportion may also be made. The plate joinery system also includes specialty plate configurations and compatible fasteners that permit many joints to be rapidly assembled without resort to either manual glue application or external clamps. A series of high-precision, low-friction cutting devices suitable for general introduction is also described.

Abstract: A saw chain for a chain saw has an identifying code stamped into one of its links for ease of selecting replacement chain. The link with the identifying code is provided with distinguishing characteristics for ease of selecting that link. The stamped code on the link provides the specification of the saw chain required for replacement. The link may have a different shape and/or colored to distinguish that link from other similar links.

Abstract: A sawing chain for chain saws, having a plurality of chain links which are linked together so as to be mutually pivotable in a common plane of extent and advance (which plane is in the operating plane of the chain) and which links bear cutting elements. To facilitate replacement of damaged individual links, and to simplify the driving and guiding of the chain, the chain links are linked together in succession in a direct intermeshing fashion i.e. not relying on fasteners to mediate the linkage of the successive chain links, along edge surfaces which extend transversely to the common plane of extent and advance (which plane is in the operating plane of the chain), resulting in a chain structure which is resistant to flexure in the direction perpendicular to the plane.

Abstract: A depth gauge leading the cutting edge in a cutter device has a body portion disposed in a substantially upright plane. The depth gauge includes a top plate portion cantilevered laterally over the body. A juncture section joins the depth gauge plate portion to the body of the cutter and is deformed intermediate its front and rear ends to strengthen the depth gauge against breakage.

Abstract: A saw blade preventing "fluff" or "return" of fibers from occurring when used to cut wood or the like object and rendering any finishing work unnecessary is formed with a unique combination of cutting teeth and biting teeth, the biting teeth being disposed, on a cut path mainly by means of the cutting teeth, either on top surface of or in front of each cutting tooth in cutting direction of the saw blade and to have a smaller width than the cutting teeth, for realizing a biting operation by the biting teeth and the cutting operation by the cutting teeth in the same sawing step.

Abstract: A cutter for an endless cutter device having a body portion disposed in a substantially upright plane, a cutter portion on a rearward region of the body and a depth gauge portion on a forward region of the body. The depth gauge has a downwardly sloping planar upper surface with a multi-angular configuration. A rear edge of the depth gauge has a central portion which is highest and farthest to the rear, with side portions extending forwardly and downwardly therefrom in diverging directions. A free outer edge intermediate the rear edge and forward edge of the depth gauge is the maximum width portion of the depth gauge. Converging edges progress forwardly from the maximum width portion to the front edge of the depth gauge. The heel of the body portion is clipped to permit limited rearward rocking of the cutter.

Abstract: A cutter for an endless cutter device having a body portion disposed in a substantially upright plane, a cutter portion on a rearward region of the body and a depth gauge portion on a forward region of the body. The depth gauge has a downwardly sloping planar upper surface with a multi-angular configuration. A rear edge of the depth gauge has a central portion which is highest and farther to the rear, with side portions extending forwardly and downwardly therefrom in diverging directions. A free outer edge intermediate the rear edge and forward edge of the depth gauge is the maximum width portion of the depth gauge. Converging edges progress forwardly from the maximum width portion to the front edge of the depth gauge. The heel of the body portion is clipped to permit limited rearward rocking of the cutter.

Abstract: The invention relates to a saw chain for a motor-driven chain saw equipped with a guide bar and a drive motor for imparting a force to the saw chain for moving the latter around the guide bar in a predetermined running direction. The chain saw is further equipped with a device for supplying lubricating oil to the saw chain during the movement thereof. The saw chain includes a plurality of cutting links, a plurality of driving links and a plurality of side links all pivotally interconnected by rivets. Abrasive small particles become entrained in the lubricating oil which can lead to premature wear at the pivot locations. The saw chain of the invention includes a hold-back element in front of a rivet to hold back such particles and yet not affect the flow of lubricating oil to the pivot connection.

Abstract: A pruning device having a chain saw with a flexible chainbar and a double-articulated cutting chain. The chainbar has a relaxed shape of a helix for encircling a tree trunk. The double-articulated cutting chain can curve about two lateral axes so that it may follow the perimeter of the helical chainbar and cut branches from the tree. A remotely located power supply is provided on a wheeled cart for powering the chain saw and supporting and operating a support wand that supports the chain saw and raises and lowers it along the tree trunk.

Abstract: An apparatus for cutting baled crop materials particularly of the cylindrical bale type comprises an apparatus in the form of a conventional chain saw in which the chain is modified so that either the slide links or the guide links include an outwardly projecting cutting plate. The cutting plate is shaped to form a cutting edge having a ramp shape commencing at a position intersecting the previous link and extending outwardly at a gradual inclination of the order of 20.degree. to an outermost point and then a trailing edge which extends backwardly toward the main body of the chain. The width of the cutting plate is less than the width of the chain itself in view of the tension in the bale which pulls the bale apart as it is cut.

Abstract: The invention is directed to a saw chain for a motor-driven chain saw equipped with a guide bar and a drive motor for imparting a force to the saw chain for moving the latter around the guide bar in a predetermined running direction. The saw chain includes a plurality of side cutting links, a plurality of center driving links and a plurality of side connecting links. The links are pivotally interconnected by rivets to define the saw chain. Entrainers are formed on at least a portion of the connecting links and/or drive links to reliably hold a chip cut by a forward cutting tooth in the free space between two cutting links one directly behind the other. The chip is therefore prevented from slipping relative to the saw chain and is transported out of the kerf without affecting the cutting capacity of the next-rearward cutting link.

Abstract: A flexible saw blade particularly well suited to the cutting of tree limbs, having a predetermined rivet pressure which assures that just the right degree of rivet pressure will act on transversely adjacent cutting links so that pivoting is easy but not too loose; having teeth pointed in predetermined directions to ensure sufficient kerf width to allow the flexible saw blade to pass through the limb as it cuts and prevents uncut wood from forming a ridge between the rows of cutting links, which would otherwise have the effect of impeding the cutting operation; and having a turn-link optionally incorporated which causes the flexible saw blade to automatically right itself with respect to the limb surface upon being passed over the limb and before actual cutting begins.

Abstract: A saw chain having center links and side link pairs that are pivotally joined by a headless fastener. The side link pairs are formed into an integral unit, by a bridge portion to receive a center link therebetween. The center link and the side link pair have aligned bores for receiving a fastener. The fastener has a center section that is rotatably received in the bore of the center link and has larger end sections on each side of the center section that are received in the bores of the side link pair. The diameter of the center section of the fastener is smaller than the diameter of the end sections. The bore of the center link is of a smaller diameter than the bores in the side link pair. The fastener is forcibly inserted into the aligned bores of the side link pair and the center link. The forced insertion of the fastener forces the bore of the center link to enlarge permitting an end section of fastener to pass through with the center section of the fastener residing in the bore of the center link.

Abstract: A saw chain is disclosed which includes cutting links having a central pivot on the bottom or inner edge of such cutting link which contacts the track of a saw bar on which the chain is mounted. A front foot portion and a rear foot portion which extend from the central pivot to the front end and the rear end, respectively, of the cutting link are normally spaced from such track when it is not cutting. The cutting link tilts about the pivot rearwardly and forwardly during cutting to provide a smooth rocking motion which reduces vibration and injury to the operator. One embodiment of the cutting link employs a single pivot located centrally between the front rivet opening and rear rivet opening. Another embodiment of the cutting link employs two pivots which are spaced apart and are both located centrally between the front and rear rivet openings. The saw chain includes side cutting links and side tie strap links connected by rivets to central drive links.

Abstract: This invention relates to a saw for cutting remote tree limbs or other wood pieces from ground level. The saw consists of a segment of a standard chain saw blade attached to ropes held by the operator in each hand. An apparatus for lifting one end of the saw over the workpiece is also disclosed. Proper placement of the saw blade on the workpiece is facilitated by use of roller beads, to minimize snagging, and a tipping device that ensures proper orientation of the saw blade. Handles are attached to the rope ends for ease in operation.

Abstract: A cutter link where the top plate and the side plate of the cutter in the link join through an inclined transition region, and a planar bevel surface produces a cutting edge which extends along the top plate and through the transition region.

Abstract: A cutter link for a chain saw chain containing a conical raker spaced forward of a round cutter face. The raker protects most of the cutter face from sudden impact and, together with the cutting and rake angles of the cutter face, provides for a filing rather than a chiseling action by the cutter link. Saw chains incorporating the novel cutter link are impact and wear resistant.

Abstract: The invention includes a cutting chain having links therein, including anchor links and cutter links. Each anchor link has an anchor portion which extends to one side of the chain. Opposed side links join the anchor links. Certain of the side links are cutter links. A disc having alternating sprocket teeth and gullies extending about the periphery thereof is provided. The chain is secured about the perphery of the disc with the anchor portions received in the gullies. Side links in the chain straddle the sprocket teeth and serve to hold the chain from lateral displacement on the disc.

Abstract: The invention is directed to a saw chain for a motor-driven chain saw equipped with a guide bar and a drive motor for imparting a force to the saw chain for moving the latter around the guide bar in a predetermined direction. The saw chain includes: a plurality of cutting links, a plurality of driving links and a plurality of connecting links, the links being pivotally interconnected by rivets or the like to define the saw chain. The cutting links have respective cutting teeth disposed at a pregiven elevation above the guide bar. A plurality of non-cutting riders are mounted on selected ones of the links so as to be at an elevation corresponding approximately to the elevation of the cutting teeth for visibly marking the movement of the saw chain around the guide bar.

Abstract: A faster more efficient cutter link for a saw chain is provided by contouring the toe portion to have several cutting edges spaced apart by non-cutting areas so that smaller chips are formed which can be more easily broken up and moved from the saw kerf. The cutting surfaces can be arcuate or linear and can extend all the way across the saw kerf or only part way, depending upon the particular configuration desired.

Abstract: The invention is directed to a cutting link for a saw chain of a motor-driven chain saw. Since the cutting links of the saw chain wear differently at the forward and rearward running surfaces, the cutting link tilts in a direction opposite to the direction of movement of the saw chain whereby a free angle conjointly defined by the roof of the cutting tooth and the cutting plane becomes larger. However, a larger free angle changes the cutting performance of the saw chain. In order to obtain an approximately uniform cutting performance over a longer period of operational use, the tooth roof can be configured over its length to define free angles which become smaller whereby the enlargement of the free angle occurring during the tilting of the cutting link caused by wear is compensated.

Abstract: A tooth main body defines open ended, crosswise recesses in which cutter elements of lesser width are secured. The cutter elements may be laterally offset from one another and a medial plane of the tooth body for the formation of parallel grooves along a wood panel or other article. Those areas of the recesses not occupied by the cutter elements form gullets into which severed material may pass. The tooth is formed from plate stock to assure uniform tooth thickness which contributes to chain life.

Abstract: The invention is directed to a saw chain for a motor-driven chain saw equipped with a guide bar and for which lubricating oil is continuously supplied during operation. The oil reaches the guide groove of the guide bar and is directed to the pivotal joints of the saw chain. The oil is taken up by the foot portions of the center links of the saw chain which engage the guide groove. Groove-like channels are provided in a side face of these foot portions via which the lubricating oil is conducted to the pivotal joints. Lubricant pockets are provided in the foot portions of the center links of the saw chain which are supplementary to the channels so that the center links can take along a greater quantity of lubricant. This lubricant then reaches the pivotal joints through the channels especially at the forward end of the guide bar where the saw chain changes direction.

Abstract: A chain saw for cutting aggregate materials including a saw chain of interconnected center links and side link paris composed of heat-treated steel. Certain pairs of the side links support diamond impregnated matrix cutting blocks that are laser welded to the side links in a process where the laser beam is focused and orbited along the juncture to avoid stress risers in the steel material of the supporting side links. Drawing down of the zone adjacent the weld also is controlled to avoid stress risers. The guide bar is provided with a pattern of enclosed channels for directing water to the guide bar groove at spaced positions on the periphery of the guide bar edge for flushing away the aggregate dust generated by the cutting process. The channels are angularly directed toward the guide bar nose and have incrementally increased cross sections on progressing toward the guide bar nose to enhance the flushing operation.

Abstract: A hay bale cutting chain with each pair of side links including a cutting link. The chain is without any protrusions other than the cutter portions, e.g. depth gauges and bumper portions are eliminated. The cutting edge, from a side view, is substantially vertical, and the side plate configuration is otherwise without a hook angle. The top plate is terminated short of the chain's mid-point to allow long strands that can get trapped under the top plates of the cutting links to escape. The chain is a small pitch chain, e.g. three-eights inch pitch, and drive at a rapid speed so that small bits are removed that more closely simulate sawdust than wood chips as in typical wood cutting.

Abstract: A saw chain with drive or center links which have portions projecting downwardly in the chain bottomed by a pair of spaced prongs. These produce a clearing action of debris that may collect in a saw bar groove receiving the prongs. The prongs are separated by an edge expanse which is indented upwardly from the tips of the prongs.

Abstract: A sawchain designed for resharpening while it is idling around the drive sprocket has cutting links (16) on the left and right sides with depth gauges (10) and spade-shaped cutters (22) which between their front (12) and rear borders (14) have a fold (13) substantially perpendicular to the lengthwise direction of the sawchain with the concave side outwards away from the central plane, permitting the rear border (14) and the side edge (12) to contact the side walls of the kerf. The depth gauge (10) is placed so far forward on the cutter links (16) that the chip thickness (19) is sufficient when the sawchain is straight. The intermediate drivelinks (21) may be provided with raker teeth (17) located so far to the rear that they do not touch the bottom of the kerf when the chain is straight, but only loosen and convey the chips cut by the cutters (22) of the cutter links (16).

Abstract: A cutter for an endless cutter device having a body portion disposed in a substantially upright plane, a cutter portion on a rearward region of the body and a depth gauge portion on a forward region of the body. The depth gauge has a downwardly sloping planar upper surface with a multi-angular configuration. A rear edge of the depth gauge has a central portion which is highest and farther to the rear, with side portions extending forwardly and downwardly therefrom in diverging directions. A free outer edge intermediate the rear edge and forward edge of the depth gauge is the maximum width portion of the depth gauge. Converging edges progress forwardly from the maximum width portion to the front edge of the depth gauge. The heel of the body portion is clipped to permit limited rearward rocking of the cutter.