Abstract: A bandsaw blade including a continuous loop of hardened tempered bandsaw steel having carbide-tipped teeth arranged in pairs, each pair including a "high" tooth and a "low" tooth shaped to provide triple-chip cutting action and ground to provide radial and tangential relief angles on side surfaces of each saw tooth to reduce blade vibration during cutting. The teeth are secured to the blade body by brazing with a solder which includes a discrete layer of a ductile metal which absorbs forces induced in the brazing zone under dynamic load conditions.

Abstract: A circular saw blade is disclosed which includes a circular body having two side faces, a central bore, and a toothed peripheral edge. Disposed within the body of the saw blade is a plurality of circumferentially extending laser-cut slots. Each of the slots consists of an arc of a circle concentric with the body of the saw blade and parallel to the peripheral edge thereof. The slots extend through the body from one side face to the other, and are spaced in a manner such that each slot cools an area of the body when the saw blade is in operation.

Abstract: Wood-cutting apparatus with an insertable tooth in which the blade is positioned radially outwardly on a flat, elongated metallic plate and comprises two side edges, each of which: (a) extends generally radially (i.e parallel to a radius of the disc in which the tooth is inserted); and (b) is positioned ahead of the plate and other portions of the blade so that the side edges lead the tooth as the disc rotates in a predetermined rotational direction. The cutting edge of the blade extends along the most radially outward extent of a region of the blade connecting the two side edges, the connecting region being positioned rearwardly from those side edges in the rotational direction.

Abstract: Rotating cutting element (1) having a row of cutters (5) placed in recesses at the circumference of a disc. Each recess has radially extending V-shaped front and rear edges (4,3), each cutter (5) has V-shaped front and rear edges (6,7) with the apexes facing away from each other. Each cutter (5) is held in the recess against an abutment (9) by means of a wedge (10) which is tensioned by means of a screw (15).

Abstract: A circular saw blade (20) includes a circular body (22) with a plurality of equally spaced teeth (32) and a corresponding plurality of gullets (34) formed integrally with and about the periphery of the body. Each alternate tooth (32) of a first set of alternating teeth has mounted thereon a carbide tip (36) with a cutting point (60) on the right side of the blade (20). Each of the remaining teeth (32) form a second set of alternating teeth and has mounted thereon a carbide tip (38) with a cutting point 72 on the left side of the blade (20). Each of the carbide tips (36) and (38) is formed with a converse front face (42), top bevel angle, side clearance angles and a front bevel angle.

Abstract: A bandsaw blade for use in milling timber having in-line swaged teeth, wherein the cutting tip of each tooth, in front profile, is triangular in shape with a central apical point (30) and two side points (32, 34). Preferably, the apical angle (.theta.) is from 60.degree. to 140.degree., with the base angles (.gamma.) of the tip being equal to one another and lying from 20.degree. to 60.degree., thus providing an elongate pentagon shape in front profile. Also, a dark blue temper band (50) may be curved so that its top is spaced below the apical point (30) by a distance of 0.5 to 1.3 times, preferably 0.6 to 1.2 times, the blade thickness.

Abstract: The invention provides a disconnectable band saw joint assembly for connecting together in axial alignment end portions of a bandsaw. The joint assembly does not require welding, and as such can be easily separated to permit threading of the bandsaw through a hole drilled in a plate to permit sawing of a closed ended cut or loop within the plate. This eliminates the normal practice of breaking and rewelding a band saw for cutting a closed loop within a plate. Furthermore, because the joint is cold, it does not affect temper of the saw portions adjacent the joint. The assembly has male and female connections, the female connections having a neck recess and a head recess, and the male connection having a head portion and a neck portion which fit within the neck recess and the head recess respectively. The recess has at least one main recess edge, and the head portion has at least one main head edge, both edges being disposed normally to longitudinal axis of the saw.

Abstract: An arrangement in circular saws of the kind which incorporate at least one saw-blade (1), a saw-blade drive spindle or the like, and at least one guide means (12, 14, 15) active against the saw-blade.The arrangement is particularly characterized in that there is provided at least one saw-blade assembly (1) which co-operates with a guide means (12, 14, 15) and which comprises at least two mutually separate, circumferentially extending blade-sections (2, 3), of which a peripherally located blade-section (2) provided with saw-teeth (5) is arranged for movement relative to the nearest inwardly located blade-section (3, 11) along an interface-zone (8) located between the two blade-sections (2, 3, 11), and is attached to the nearest inwardly located blade-section by means of parts which substantially prevent relative rotation between the two blade-sections in order to permit torque to be transmitted from the saw spindle (4) to the peripheral blade-section (2).

Abstract: In order to achieve a secure join between the base and the covering of a disc-shaped tool, e.g. a circular saw, provided with a vibration-reducing structure at least on one side and to prevent the covering of the structure from separating from the base, an edge region of the covering extending into a groove in the base is joined elastically to the base at least in part on the rear and/or end surface by at least one holding element.

Abstract: A saw blade exhibits a foundation (1) of spring steel, which exhibits along one edge projections (3), each separated by a chip space (2), each carrying a seat (4) each for a cutting material plate (6, 6') and each forming a tooth back (5). The cutting material plates (6, 6') exhibit a cutting edge and a true rake (7) and are arranged at an effective rake angle (.gamma.), while each two adjacent cutting material plates (6, 6') form a pitch (t) with the mutual interval of their cutting edges and/or cutting tips. The cutting material plates (6, 6') are attached with varying pitch (t) and with varying effective rake angle (.gamma.).

Abstract: A sheath for deadening the sound of at least one circular blade for cutting marble, granite and hard stone consists of at least one structure of "Bakelite" or other sound deadening material, the structure forming at least one cavity of discoidal shape. The cavity provides a housing for at least one rotating cutting blade. The cutting blade may be provided with teeth along its periphery, thereof. The sheath may comprise of two hollow structures of great thickness connected by threaded rods forming between themselves, two cavities of discoidal shape, in which the cutting blades rotate.

Abstract: The link comprises a support member 1 adapted to slide on a blade, and a cutting element 20 solidly connected to the support member. The support member 1 has two spaced parallel flanks interconnected by a rounded portion 30. The cutting element 20 takes the form of a small metal plate arranged transversely with respect to the two flanks 2, 3 in an opening 5 provided for this purpose, and the rear surface of which has a central stud 27 enclosed by the two flanks 2, 3 and by the rounded portion 30. The small plate 20 is made of tungsten carbide and is located at its lower end its engagement in two notches 7 and 8 formed in the support member 1.

Abstract: A circular sawblade useful in cutting circular figures from a planar material utilizing a power source to rotate the sawblade where the blade has a selected degree of concativity to accommodate the radius of the circular figure to be cut from the planar material. The present invention further comprehends a saw device to mount the blade for rotation where the cutting plane of the material can be selectively adjusted with respect to the degree of concativity of the sawblade to selectively adjust the angle between the surface cut by the blade and the planar surface of the material.

Abstract: The teeth of the saw blade (1) intended for preparing wood comprise a cutting edge (2) beginning at the tip (6) and forming an angle of intersection (.delta.) of 40.degree.-55.degree.. Adjoining the cutting edge (2) at the tooth face there is a cut-back, circular curved section (3). This curved section (3) continues at the bottom into a rounded base (4) between adjacent teeth and then continues into the edge (5) bordering the gap between the teeth, and on into the back of the next tooth.A considerably increased cutting performance is achieved with a saw blade of this kind, since a paring action is effected, and the shavings can roll away easily.Saw blades equipped with this kind of teeth can be made both as circular saw blades and also as bandsaw blades which are moved in a straight line.

Abstract: A circular saw blade is subdivided into two sectors by a serpentine-shaped interruption cut so that at least one noise-damping slot is formed between the two sectors. The serpentine cut forms in the two sectors projections alternating with recesses. The projections of one sector are received in the recesses of the opposite sector. The adjacent projections of the opposite sectors are spaced from each other in the regions of their backsides. The spacing between the backsides of the opposite projections increases towards a central bore of the saw blade.

Abstract: A circular saw blade is formed with a plurality of strain compensating slots which include a number of inner slots extended outwardly from a central bore of the blade and a number of outer slots which are substantially parallel to the inner slots and respectively spaced therefrom in the radial direction and circumferential direction. Each outer slot partially overlaps the nearest inner slot in the radial direction. Each slot has a spiral or circular end portion.

Abstract: A circular saw blade having a plurality of circumferentially-spaced cutter teeth projecting radially outwardly therefrom. A portion of the periphery of the blade rises gradually as it progresses toward the front face of a tooth to provide a depth gauge to control depth of cut. A chip clearing channel extends radially inwardly along the body of the blade adjacent the front face of the tooth. A pocket formed in the body has edge margins which receive and support front and rear surfaces of a cutter tip.

Abstract: The present invention covers a saw blade having a row of teeth with a unique arrangement along its edge and the blade has at least one closed aperture which extends in the direction away from the row of teeth, wherein the part of the saw blade between the row of teeth and the aperture comprises a strip-like element.

Abstract: The present invention relates to a saber saw which comprises a blade having a plurality of teeth. Each tooth has a cutting edge extending from a top to a deep recess and having an inclination angle of 90.degree. to 120.degree.. Each tooth also has a tooth face formed on its side opposite the first-mentioned cutting edge extending from the top to a shallow recess and having a releaf angle of 10.degree. to 45.degree..

Abstract: Wear-resistant and shock-resistant tools are constructed by preforming carbide-containing working parts of high wear resistance and hardness and attaching them to a softer base metal of the tool by means of a highly shock-resistant steel-to-steel fusion weld. The working part is preformed by powdered metallurgy techniques utilizing steel powders having carbide-forming constituents therein which form carbides along the grain boundaries of the steel uniformly throughout the working part as a result of sintering of the compressed powders. Thereafter the fusion welding process renders the carbide structure of the working part nonuniform for optimum shock resistance, without reducing the effective wear resistance thereof, while also forming a highly shock-resistance joint between the working part and the base metal of the tool.

Abstract: A sawblade has teeth of a height corresponding to the thickness of the blade and chip spaces in the interstices between respective teeth opening into both sides of the blade; the bottoms of alternate chip spaces are inclined to opposite sides of the blade whereby the maximum depth of the chip spaces corresponds to a multiple of the height of the teeth.

Abstract: A cutting tool has a plurality of cutting teeth. An electric voltage is applied between adjacent teeth so that a localized heating of the workpiece occurs at and around the cutting tips, in order to facilitate the cutting step. The voltage may be varied in such manner as to prevent or induce non-linear cutting.

Abstract: A circular saw blade having a plurality of circumferentially-spaced cutter teeth projecting radially outwardly therefrom. A portion of the periphery of the blade rises gradually as it progresses toward the front face of a tooth to provide a depth gauge to control depth of cut. A chip clearing channel extends radially inwardly along the body of the blade adjacent the front face of the tooth. A pocket formed in the body has edge margins which receive and support front and rear surfaces of a cutter tip.

Abstract: Band saw blades embodying this invention are especially adapted for the cutting of hard metal work pieces of large cross-sectional size. The blades are characterized by a straight, planar sawtooth cutting edge and a tiered or stepped back edge, having alternate recessed and outer edge portions. Both the recessed and outer edge portions of the blade's back edge are generally parallel to the cutting edge of the blade and adjacent of these alternate edge portions are connected with inclined or tapered sections. The length of the recessed and outer edge portions are approximately equal; and when combined with the length of an inclined section, is about equal to the spacing of the saw guides of the band saw machine in which the blade is to be used.

Abstract: Circular saw blades, especially for separating wood, cutting grooves into wood and the like materials, are disclosed. Such blades include a cutting zone in which there are arranged cutting teeth, which cutting teeth may be equipped with hard metal cutting plates. Next to the cutting zone there is arranged a carrying zone comprising a central receiving opening. The carrying zone is of approximately constant thickness and is provided at least in the region between the receiving opening and the cutting zone with raised portions. The raised portions are arranged to extend generally over the entire radial and circumferential extent of the carrying zone, substantially continuously in sequence to one another, and in respective opposite direction projecting above the pertaining larger side of the carrying zone. The projections can occupy respectively a section between radii located at an angle of from about 15.degree. to about 30.degree..

Abstract: The article, such as a circular saw tool or a gear wheel, has a visco-elastic synthetic-resin damping layer between, on the one hand, a portion of the body of the article which is integral with, or securely attached to, a work region adapted to interact with another article, and, on the other hand, a counter-element which extends parallel thereto. The damping layer is arranged in the interior of the article in a region covered by an outer member integral with or securely connected to the body. The parts between which the damping layer lies are connected together by the damping layer in a manner which permits shear stresses to occur in the damping layer.

Abstract: A cutting rule including teeth having a beveled chisel-like tip with a straight-edged top, symmetrical angular side edges and shallow notches between adjacent teeth. In alternate embodiments the side edges may be beveled and the rear side of the tip may be beveled. Also, an improved slot configuration is provided which facilitates bending to form a curved rule.

Abstract: A sawblade is manufactured by a swaging or cold-forging operation so as to be either complete with teeth and relief indentations on the side surfaces of a blade body or by producing a sawblade body with a seat wherein a separately formed toothed insert may be fastened, e.g. by soldering, brazing or welding.

Abstract: A saw blade having two or three blade members immovably coupled to each other, and having a plurality of coolant passages grooved on the interior of the blade members. The passages communicate with coolant inlet ports and terminate at openings located at the root peripheral side of the blade cutting edges. The saw blade releases coolant from itself which not only cools the blade members but also blows cut material from the blade cutting edges thereby facilitating a cutting operation being performed on a workpiece.The saw blade may be utilized with a coolant feeding apparatus, having distributors which are rotatably driven and connected with stationary feeding pipes, the pipes having axial channels communicating with the coolant inlet ports of the saw blade.

Abstract: A circular saw blade for mounting on a powered saw arbor with the blade having saw shoulders spaced thereabout defining open gullet areas. Block shaped teeth of tungsten carbide, or the like, have a bevelled front face at one end of the tooth providing an accentuated rake angle for cutting efficiency. A tooth major axis is disposed substantially normal to a saw blade radius. The saw blade shoulder has an outer edge tangential to its circular path.

Abstract: A new tooth form for a welded edge band saw, which has a positive rake angle and an enlarged gullet space, while maintaining a large wedge angle, is disclosed. The tooth geometry has a wedge angle greater than positive rake tooth forms of previous design and a gullet space comparable to a zero rake angle standard tooth form. The new tooth form provides an improved cutting rate and useful life and it is particularly advantageous in connection with high speed heavy duty band saw apparatus.

Abstract: A plastic bearing and wear surface is disclosed which has low friction fibers protruding from its surface. The bearing is made by filling a plastic matrix with low friction fibers whose mechanical properties relate to those of the matrix in such a manner that when the matrix is machined, the matrix material will selectively be removed leaving some of the fibers imbedded in the matrix with their free ends protruding from and distributed over the machined surface.

Abstract: The article, such as a circular saw tool or a gear wheel, has a visco-elastic synthetic-resin damping layer between, on the one hand, a portion of the body of the article which is integral with, or securely attached to, a work region adapted to interact with another article, and, on the other hand, a counter-element which extends parallel thereto. The damping layer is arranged in the interior of the article in a region covered by an outer member integral with or securely connected to the body. The parts between which the damping layer lies are connected together by the damping layer in a manner which permits shear stresses to occur in the damping layer.

Abstract: A circular saw of improved vibration characteristics in which the saw teeth are arranged in an odd number plurality of segments and wherein each segment includes a relatively rigid zone and a relatively flexible zone obtained by varying tooth spacing. Also, the tooth-to-tooth spacing is preferably randomly varied to reduce harmonic vibration.

Abstract: A self-guiding circular saw, the saw having a series of circumferentially spaced teeth around the periphery thereof. A pair of ribs protrude on opposite sides of the saw blade with each rib being co-extensive with the other and extending from the periphery of the blade linearly toward the central area of the blade. The combined thickness of the ribs and the blade being greater than the thickness of the blade but less than the kerf defined by the teeth of the saw such that the ribs will function to guide the saw in a straight path in the cut.

Abstract: A method is disclosed for reducing vibrations in revolving disc cutters used for cutting a running web. The method includes the step of coating the disc cutters, at least partly, with a layer having substance components with a high internal friction. Preferably, the disc cutters are made cup-formed so that they have a convex side and a concave side, whereby the coating is applied to the concave side of the cutters. Tough plastic, preferably epoxy resin or rubber, mixed with metal powder, can be used as a coating layer.

Abstract: A series of apertures are formed in a blade of a circular saw which define a plurality of the strips interconnecting the toothed annular peripheral portion and the inside portion of the blade. The strips are dimensioned so as not to hinder the expansion of the peripheral portion and the width of the peripheral portion is so great that its own weight can bring about the required tension due to the centrifugal force when the blade rotates. The width of the peripheral portion is 10-30% of the diameter of the blade and the length of the flexible part of the strips is at least 10% of the diameter of the blade. The flexibility, defined by the formulaK=(L/B).times.(sin .alpha./N)in which L=the length of the center line of the flexible portion of the rib and B=the greatest width of the rib of this length, .alpha.

Abstract: An improved double-roll crusher is provided which is especially suitable for crushing bones having a relatively low content of soft matter, the crusher being of the general type comprising two parallel rolls, each comprising an assembly of alternating toothed cutting discs and spacers so disposed that cutting discs on one roll extend radially into the spaces between adjacent cutting discs on the opposing roll in an alternating manner, wherein the improvement comprises forming the toothed cutting discs so that the gap between adjacent teeth is trapezium-shaped, the sides of the teeth make a rake angle of 1.degree.-20.degree., the upper face of each tooth is beveled 5.degree.-35.degree., and the length of the larger base of the trapezium is close to the maximum desired particle size.

Abstract: A circular saw blade is divided into sectors through slots extending from the periphery toward the hub part so that adjacent sectors have appreciably different natural frequencies. The sectors damp one another's vibration so that the blade's function is stabilized.

Abstract: In a fret saw blade having a shank portion and saw-teeth, the saw-teeth are formed in a manner that the centers of the cutting edges of some saw-teeth are depressed and deformed generally in V-shape so as to form sharp ends projecting beyond the side surfaces of the shank portion of the fret saw blade.

Abstract: A saw blade having improved metal cutting characteristics in which the tip of each tooth is formed to provide a primary rake face extending from the tip of the tooth for a distance of 0.007 to 0.020 inch and having a positive rake angle of 12.degree. to 25.degree., a secondary rake face extending from the primary rake face to the gullet of the tooth and having a positive rake angle less than 12.degree., a primary end relief surface extending from the tip of the tooth for a distance of 0.007 to 0.030 inch and forming a relief angle of 10.degree. to 25.degree., and a secondary end relief surface extending from the primary end relief surface to the gullet of the next successive tooth and forming a relief angle greater than the relief angle of the primary end relief surface. The blade can be made by applying a deforming force to the tips of the teeth of a precursor saw blade.

Abstract: A circular saw blade having reduced vibration through increased damping by utilization of radial slots in the blade to form blade segments to interrupt circumferential vibration in the blade which may have blade segment stiffening means and having a damping collar axially aligned with said blade to provide a sink for dissipation of vibrational energy from the blade segments.

Abstract: A cutter tool of the kind having a blade body with teeth which are provided with hard material tips is so machined that the side faces of the tips are dished or otherwise concavely contoured.The machining involves mounting the blade body on a worktable and first machining the side faces on one side of the tips to produce a reference plane including the ends of the cutting edges of the tip and using this plane as a reference plane for subsequent machining of the other side faces and the surfaces of the blade body.

Abstract: A blade with teeth whose spacing varies around the periphery has, on at least one side, a cover element and an intermediate visco-elastic layer, in order to reduce noise. A holding element fixed to a support ring holds the cover element on the blade independently of the intermediate layer and allows the layer to perform a damping function subject to thrusting stresses.

Abstract: A vibration damped rotary disk is provided and includes a pair of circular disk panels disposed in side-by-side superposed relation. The panels include shallow concentric and opposing annular recesses formed therein of a radial extent greater than one-half the radial extent of the panels and spaced inwardly of the outer marginal portions of the panels. A filler of mechanical vibration dampening and absorbing material is disposed in and fills the recesses and the outer marginal portions of the disk panels disposed outwardly of the recesses are secured together. Preferably, circumferentially spaced rivets are utilized to secure the outer marginal portions of the disk panels together and those opposing surfaces of the disk panels disposed radially outwardly and radially inwardly of the recesses have a thin layer of Teflon interposed therebetween, the disk panels being constructed of metal.

Abstract: The invention disclosed pertains to improved raker (high) and low teeth for use in circular saw blades. Each raker tooth includes a leading face and a top portion. The leading face comprises a first and second planar surface wherein the second surface extends at a negative angle from the first surface and to the top that consists of five facets in which two pairs of facets lie in planes offset at a first and second angles from the plane of a first center facet. Each low tooth also includes a leading face and top portion. However, the leading face includes a first planar surface and a second portion consisting of five facets each of which extends from the first surface to the top portion at a negative angle of inclination, and two pairs of facets lie in planes offset at first and second angles from a first center facet.

Abstract: A saw blade construction and method of forming such blade whereby the ends of a saw blade are abutted into end to end relationship to define an endless saw blade having a series of teeth formed along one edge to define a cutting edge, and having a back edge which is progressively sloped or tapered in opposite directions from an intermediate point on the back edge so that in a cutting operation the saw blade effects a cut along an edge portion of a workpiece on the down feed stroke of the blade and a progressive cut on the opposite edge of the workpiece whereby the teeth are rendered self-feeding on the progressive cut of the workpiece. In a modified embodiment the saw blade is formed with a plurality of alternate disposed down feed and progressive cutting edges.

Abstract: A saw blade has teeth formed with cutting edges which are inclined relative to the side surfaces and which extend only partly across the blade width, the cutting edges of successive ones of the teeth extending transversely inwardly from opposite side surfaces of the blade.

Abstract: A circular saw blade has block-like tooth tip inserts of hard metal, secured at circumferentially spaced intervals to the peripheral portion of a disc-like blade body having opposite flat side surfaces. The gullet in front of each insert, conventionally present in such a blade, is spanned in the circumferential direction, at least to a substantial extent, by a fixed thin wall, which can comprise a reduced thickness portion of the blade body, so that each gullet is thus defined by a sidewardly and radially outwardly opening cavity in a side surface of the blade, and the blade has a near-circular periphery. At the circumferentially rearward and radially inward portions of each cavity its edges are substantially bevelled to facilitate flow of cuttings out of the cavity.

Abstract: The invention disclosed pertains to improved raker and low teeth for use in circular saw blades. Each raker tooth includes a leading face and a top portion. The leading face comprises a first and second planar surface wherein the second surface extends at a negative angle from the first surface and to the top that consists of five facets in which two pairs of facets lie in planes offset at a first and second angles from the plane of a first center facet. Each low tooth also includes a leading face and top portion. However, the leading face includes a first planar surface and a second portion consisting of five facets each of which extends from the first surface to the top portion at a negative angle of inclination, and two pairs of facets lie in planes offset at first and second angles from a first center facet.