Abstract: The present invention is an extractable fastener and a method of use thereof used with a pocket or mounting block of a tool holder used to secure a cutting tooth to a cutting wheel of a stump cutting apparatus. The extractable fastener has a head portion, a shank portion having a threaded portion and an end face. The end face includes an engagement portion that receives a suitable tool whereby force applied to the tool rotates the broken portion of the fastener to remove it from the threaded bore on the pocket or mounting block.

Abstract: A cutoff disc, having an outer periphery provided with particles which are released during wear, a central opening for passage and clamping on a work spindle for the rotary driving on a grinding hand power tool, and an outer ring region which is provided on an outer edge, the outer ring region extending radially outwardly with a tip and forming a small cutting edge.

Abstract: The saw blade for reciprocating saws is an offset saw blade for attaching to a reciprocating saw for making flush cuts around a ninety degree surface. The saw blade includes a mounting arm and an offset blade portion. The blade portion is attached to the mounting arm by a connector arm. The blade portion includes a row of saw teeth on at least one edge of the blade portion. The saw blade also includes at least one stabilizer, such as a gusset plate, disposed along the connector arm for increasing the rigidity of the saw blade.

Abstract: A circular saw blade assembly of a tree felling head of a type which has peripherally mounted cutting teeth. The assembly has a circular disc plate with a rim. Mounting lug arrangements evenly distributed and outwardly projecting around the rim receive tooth holders having respective heads adapted to receive the cutting teeth, and respective shanks projecting behind the heads and adapted to receive bolts for fastening the cutting teeth against the heads of the tooth holders. Each mounting lug arrangement has opposite lug elements spaced from each other and extending in parallel with a radial plane of the disc plate. The lug elements of each mounting lug arrangement define an outwardly opened channel extending substantially in a tangential direction with respect to the rim and into which the shank of one of the tooth holders is slideably mountable.

Abstract: Provided with a film cutter that has a guiding mechanism in accordance with the present invention includes a housing providing a pair of guiding rails thereon. The housing is adapted to be mounted on a box containing a film roll. The housing includes at least a receiving slot arranged adjacent to the guiding mils. At least a film positioning element is arranged in the receiving slot for providing a robust positioning of the film spans thereover and a cutter assembly moveably supported by the guiding rails for separating the film spans over the rails. When the film from the film roll is tightly stretched by the film-positioning elements thereby providing a clean cut when the cutter assembly slides over the stretched film.

Abstract: A saw comprising a planar body includes at least one cutting edge with serrated teeth. The planar body has cutout portions displaced from the outer cutting edges which include sets of secondary teeth which are aligned generally parallel to or in an arc concentric with the outer cutting edge or edges.

Abstract: A pair of saw blades comprises a first blade (1), which is adapted to rotate in a first direction about an axis of rotation (r), and a second blade (2), which is adapted to rotate in a second direction opposite to said first direction about the same axis of rotation (r), wherein each blade (1, 2) has a blade body (3, 4) and cutting elements (5, 6), which are provided along the periphery of the blade body (3, 4) and adapted to run close and in parallel to each other when the blades (1, 2) are rotating. A spacer means (7), which extends into a space between the two blades (1, 2), is attached to at least the blade body (4) of one of the blades (2) in order to support itself against and slide along a peripheral part of the other opposite blade (1).

Abstract: An optical element has diffractive grooves. Each diffractive groove includes a first surface approximated by a predetermined optical function; a second surface extending in a direction to cross the first surface and being parallel to the optical axis; and a third surface to connect the first surface and the second surface. A width of the third surface in the direction perpendicular to the optical axis is 0.5% to 15% of the sum of a width of the first surface in the direction perpendicular to the optical axis and the width of the third surface in the direction perpendicular to the optical axis.

Abstract: A saw blade for a reciprocating saw apparatus having first and second longitudinal edges and first and second opposite ends. The saw blade is provided at its first end with an attachment element for attaching the blade to a power unit. The first and second longitudinal edges of the blade are toothed, the teeth of the first and second longitudinal edges being raked towards the first end of the saw blade. The second end of the blade is toothed and is rounded.

Abstract: A tool such as a circular diamond abrasive saw blade includes a circular metallic body having a substantially central aperture through which the saw blade is mountable to a rotatable drive shaft, and a plurality of cutters disposed in spaced relation along a periphery of said body. A plurality of gullets are located in spaced relation between the cutters, extending radially inward from the periphery. The gullets are sized and shaped in the form of alphanumeric or graphical indicia.

Abstract: A saw blade for a tree felling head has three tipped teeth in which only one tip of each tooth is exposed outside of the blade disc. Around the circumference of the blade, teeth with tips exposed on the upper side of the blade alternate with teeth having tips exposed on the lower side of the blade. Axes of the teeth are tangent to radii of the disc and angled upwardly or downwardly relative to the plane of the disc, and mating surfaces on the teeth and disc at 45° to the plane of the disc abut against rotation and loading of the teeth.

Abstract: A cutting tool such as a saw blade or drill bit, having a cutting portion having a body and one or more cutting tips on the body. A set of markings on the body indicate the distance between the cutting tip and each marking, to indicate to a user the depth of cut to which the tool has penetrated into a workpiece. The markings can be painted, etched, printed, peened on the body or applied in other desired manner.

Abstract: The invention relates to a chipper knife for chippers of the type comprising a tool (12) which is rotatable on an axis of rotation and is in the form of, for example a drum, disc or truncated conical body, which supports a plurality of such chipper knives. The chipper knife comprises at least one cutting edge (1) which is formed between a flank (2, 2′) and a chip guiding surface (4, 4′), and two opposite main surfaces (3, 3′) which are adapted to abut against and be retained on the opposite seats (14, 15) of a holder (9, 10) on the tool. At least one main surface (3, 3′) of the chipper knife which is located on a wood side of the chipper knife comprises a cross-sectionally convexly bent surface portion (6, 5′) which connects to and extends backwards from the flank (2, 2′) and the chord of which constitutes at least 20%, preferably at least 30% and, most preferably, at least 40% of the total cross-sectional length of the chipper knife.

Abstract: A blade (1) with improved sharpness and durability is disclosed. The blade includes a base plate (3) having an edge and a coating layer (6) for coating the edge. The coating layer is formed of a material including metal, and a tip of the coating layer (2a) is sharpened. It is preferred that an angle (&bgr;a) between two tapered surfaces (7a, 8a) be between 15 to 45 degrees.

Abstract: A saw blade is disclosed for the high-speed cutting of ferrous alloys. A blade with negatively-raked carbide-tipped teeth, a large gullet between each tooth, and vibration-reducing arc-shaped slots allow for the essentially burr-free cold-cutting of steel without lubricant.

Abstract: An optical element has diffractive grooves. Each diffractive groove includes a first surface approximated by a predetermined optical function; a second surface extending in a direction to cross the first surface and being parallel to the optical axis; and a third surface to connect the first surface and the second surface. A width of the third surface in the direction perpendicular to the optical axis is 0.5% to 15% of the sum of a width of the first surface in the direction perpendicular to the optical axis and the width of the third surface in the direction perpendicular to the optical axis.

Abstract: A blade assembly for a saw having a blade that rotates about an arbor includes a blade collar, first washer, saw blade, second washer, and arbor nut mounted onto the arbor. The first washer has integral shear pins that engage voids of the blade collar, coupling the blade collar to the first washer. To electrically isolate the saw blade, the first washer is made of an electrically insulating material, and also includes a hub that extends into the aperture of the blade, electrically insulating the blade from the arbor. The arbor nut secures the blade assembly to the arbor. Upon an emergency brake being applied to the blade, the shear pins shear, de-coupling the blade collar from the first washer, minimizing damage to the drive system and allowing for a rapid stop of the blade.

Abstract: A starting material for the production of a saw band which comprises saw teeth with tooth tips of hard, wear-resistant material and a process for the production thereof. The starting material comprises a steel band which carries on the face side thereof individual parts of cutting material which correspond to the tooth tips of the saw band. This abstract is neither intended to define the present invention disclosed in this specification nor intended to limit the scope in any way.

Abstract: A side cutting edge of a tip 20 fixed to the outer circumference of a circular saw blade body 11 has a inflexion point K at a portion at which the tip projects laterally to the greatest distance. An outer-circumferential-side portion of the side cutting edge has a negative radial clearance angle of not less than −1° but less than 0° at the inflexion point, and an inner-circumferential-side portion of the side cutting edge has a positive radial clearance angle of greater than 0° but less than −1° at the inflexion point. By virtue of this configuration, a cut surface having a better surface roughness as compared to that obtained conventionally can be obtained in cutting of a soft material such as wood by use of a circular saw.

Abstract: The saw blade (1) includes an elongated body (2) having a longitudinal edge and defining a plane of main extension (6). A plurality of protrusions (4) each is located in the region of the longitudinal edge and each includes a seat (12). A plurality of form bodies (5) each is made of hard cutting material, has a cross section (15) and is connected to one of the seats (12). Each cross section (15) of the form bodies (5) in the plane of main extension (6) at a side facing the respective seat (5) is limited by a line (16) in the form of a circular arc, and at a side facing away from the respective seat (5) it is limited by a front line (17) of a surface (18). The line (16) in the form of a circular arc and the front line (17) enclose a wedge angle (22) which is less than approximately 90 degrees, and they are designed and arranged to form a free angle (23). A plurality of cutting portions (10) each extends approximately transverse with respect to the plane of main extension (6).

Abstract: A circular saw blade, consisting of a supporting body (1) and a plurality of cutting tips (2) which are inserted into the supporting body (1) such as to be distributed over the circumference and have a front rake face (2a) and a rear bearing face (2b) and also a cutting edge forming a pitch circle diameter (F), having a chip space (3) formed in front of each cutting tip (2) and a plurality of expansion slots (4) which are arranged such as to be distributed over the circumference, extend radially inward, have an essentially triangular terminal configuration (5) with a center (Z) lying inside the curve path and originate at the root of the chip space (3), is distinguished by the following features:

Abstract: A bandsaw blade for sawing of metal where each tooth has a narrow flat land (12) without clearance angle and a sharp cutting edge (14) in front, manufactured by moving the blade longitudinally with the tips of the teeth in contact with one or more slowly rotating hones (11) before possible setting and before joining to loops, thus providing less risk of tooth damage, less cutting force and greatly reduced noise. The invention also relates to a method for manufacturing a bandsaw blade with teeth.

Abstract: A method for forming a tool having a smooth surface finish is disclosed. The method involves the step of first rotating a plurality of tools within an inner vessel at high speed relative to the outer vessel with a first abrasive. The first abrasive is then removed and a second abrasive is added to the vessel. The inner vessel is then rotated, again at high speed, with the second abrasive. The resulting tools have reduced surface anomalies.

Abstract: A throw-away tip of which two principal surfaces each comprises a land surface 5 provided along the periphery thereof, a central surface 7 provided on the inside of the land surface 5, a recess (a chip breaker groove) interposed therebetween, and at least one protrusion 8 that extends from the central surface 7 toward the land surface 5, wherein height of the land surface is made equal to the height of at least the top surface of the protrusion 8 so that at least the top surface of the protrusion of the central surface and the land surface both serve as contact surface.

Abstract: A disc-shaped blade used in a power tool includes opposite side faces and an outer circumferential zone having radially aligned, equally spaced notches extending outwardly from gullets to define arcuate blade segments spaced about the outer periphery of the disc-shaped body. A first composite mixture containing diamond particles of a first mesh size is electroplated to an outermost peripheral edge of each of the blade segments to provide a cutting edge. In one embodiment, a second composite mixture containing diamond particles of a second mesh size is electroplated to the opposite side faces of the blade for beveling cut ends of PVC and ductile iron pipe.

Abstract: A band saw includes a continuous saw body and multiple saw teeth provided on an edge portion of said saw body entirely. The edge portion of the saw body and the saw teeth are angled toward an inner side of the saw body by creating a bend near a tooth base line of the saw body. A band saw processing method and a method of manufacturing the band saw are also disclosed.

Abstract: A rotary saw blade for cutting fiber cement board materials. In one embodiment, a rotary saw blade is provided having a main body plate and a central opening with respect to an axis of rotation. A plurality of cutting teeth are disposed about the periphery of the plate. Arcuate tooth support portions extend rearwardly from the cutting teeth and have a center of curvature offset from the axis of rotation. Peaked shoulders having a forwardly sloping portion, a peak and a rearwardly sloping portion extend from the tooth support portions. The peaked shoulders partially define hook-shaped gullets between the shoulders and the cutting teeth.

Abstract: A saw blade for a circular saw has a circular disk with a predetermined radius and a predetermined thickness. Teeth are arranged on the circumference of the circular disk and elongated air passages are provided in the substantially circular side faces of the circular disk. The saw blade has two parallel saw blades that are driven in coaxially opposite directions. In order to improve the operational behavior of the saw blade, especially in its thermal characteristics while providing a high mechanical stability, a respective longitude of the elongated air passages extends in a selected direction to lie in an area that extends from a first direction of a secant intersecting the side faces to a second direction of a circumferential arch in the side faces. The elongated air passages are located in an outer region defined by a ring area. The outer border of the ring area is provided by the circumference of an outer circle having a radius in the order of about 0.75 to 0.95 times the radius of the circular disk.

Abstract: An indexable cutting insert for use in a milling cutter. The cutting insert having four identical side surfaces extending between generally square shaped top and bottom surfaces with two diametrically opposite protuberances extending away from each other in a top or bottom view of the cutting insert. The cutting insert has eight identical major and minor cutting edges. The milling cutter having the general form of a circular disk with a plurality of the cutting inserts releasably mounted in insert pockets angularly around the periphery of the cutter. The cutting inserts are arranged to produce a profile on a workpiece having a central straight section and two beveled sections on either side of the central straight section.

Abstract: A disk cutter including an annular disk-shaped base adapted to be driven about an axis of rotation; a plurality of tip supports formed along the outer circumference of the base integrally therewith so that a gullet is defined between adjacent ones of the tip supports; and a plurality of hardened cutter inserts respectively fixed to the tip supports. The base is imaginarily divided into a plurality of segments by radially extending lines. The hardened cutter inserts in each segment are arranged symmetrically with respect to a circumferential center line of the segment so that the pitches of the hardened cutter inserts on each side of the circumferential center line are stepwise increased in a direction from the circumferential center line toward the radially extending line on the same side.

Abstract: A cutting tool includes a base made of metal having a plurality to cutting teeth along an edge of the base, wherein at least one cutting tooth has at least one notch in the cutting edge of the at least one cutting tooth. A tool is prepared by introducing a notch running longitudinally along the length of the tool in the cutting edge of the cutting teeth.

Abstract: A TiBN layer is provided as a coating, in particular for cutter bodies, which is a mixed phase consisting of TiN and TiB2. The boron content is 6 At.≧weight -%. The deposition rate is higher than that of a TiN layer and also higher than that of a TiB2 layer. Hardnesses between 3500 HV to 5000 KV are achieved.

Abstract: A saw blade with teeth has a tooth point with a tooth edge (E1, E2). A tooth face is on the front side of the tooth and a tooth back is behind the tooth edge. A tooth gullet (G1, G2) is defined as the space between the tooth edges of two adjacent teeth. The tooth edge (E1, E2) extends between a right hand tooth corner (A1, A2) and a left-hand tooth corner (B1, B2). A first tooth gullet, disposed between the tooth edge (E1) of a first tooth (T1) and the tooth edge (E2) of the next tooth (T2) is beveled. A sloping surface (S1) extends from the first tooth edge (E1) in the rear end of the first tooth gullet downwardly along the tooth face and to at least the tooth bottom.

Abstract: The invention relates to a cutting insert for machining down workpieces. Said insert comprises several cutting edges (10), in particular for roughing work. A curved cutting corner, or a corner consisting of a large number of short, respectively linear edge sections positioned at obtuse angles in relation to one another, is positioned between neighbouring cutting edges (10). According to the invention, the cutting surface comprises a bevel (14, 15), which extends along the cutting edge (10). The section of bevel lying in the centre of the cutting edge (10) is broader than the two adjacent bevelled areas on either side, the broader bevel being between 1.5 and 4 times as broad as the breadth of the laterally adjacent bevel.

Abstract: Process for manufacturing a circular saw blade and a saw blade obtainable by the process. At least two congruent metal blades of an iron-based alloy are glued together and the inner and outer lateral surfaces thereof are treated to provide roughness values within certain limits.

Abstract: A saw blade having an annular body constructed of a first material having a perimeter with a plurality of teeth formed therein. A plurality of carbide inserts are affixed to a respective tooth. The carbide inserts include a cutting edge including a first edge surface which is generally parallel to an axis of rotation of the blade and a second angled edge surface which is angled relative to the axis of rotation of the blade and shorter than the first edge surface.

Abstract: A rotatable cutting tool with colored visual warning is provided. The cutting tool includes colored portions of at least two different colors. When the cutting tool is rotated above a predetermined speed, the individual colors are not separately discernable but instead appear as an apparent or blended color which serves as a visual warning.

Abstract: A cutter machine having a knife holder 13 mounted onto a cutter shaft 6 at the center portion, wherein a material to be cut is cut with knives 15 mounted onto the outer circumference of the knife holder 13 by rotating the knife holder 13 around the cutter shaft 6, characterized in that the knife holder 13 is separated into a fixing member 17 mounted onto the cutter shaft 6 and a mounting member 18 onto which the knives 15 are mounted, wherein the mounting member 18 is pivotally supported around more than two axes with respect to the fixing member 17. In the cutter machine, the knives and a die plate come into contact with each other by a small press force of the knives without any usage of the resilient effect resulting from a gum bush, a metal plate or the like, thereby enabling a satisfactory cutting to be obtained.

Abstract: A saw chain for a power chain saw is provided and is formed of centrally disposed drive links and laterally disposed connecting links. The links have a flat main body which has two rivet openings through which, transverse to the longitudinal direction of the chain, rivet pins extend for a pivotable connection of the links. Some of the connecting links are embodied as cutter links, which have a cutting tooth formed on the main body, whereby at least one depth limiter is disposed in a manner so as to lead each cutting tooth. At least one part of the depth limiter is fixed in position on a chain link that is disposed on the inner side of the cutter link, and that edge of the cutting tooth that is disposed toward the front in a direction of travel extends parallel to that edge of the leading depth limiter that is disposed toward the rear in a direction of travel.

Abstract: A circular cut-off saw blade with a circular body having a peripheral edge, a plurality of curved slots spaced along the peripheral edge, each slot having an open outer end connecting with the peripheral edge, and defined by essentially parallel, continuously-curved sidewalls leading away from the peripheral edge, and cutting segments fixed to the peripheral edge between each pair of adjacent slots.

Abstract: A glass-cutting saw blade has an elongated body adapted to move transversely to a cutting direction and having a short leading edge extending transversely to the direction, a pair of long sides extending generally parallel to the direction back from ends of the leading edge, and a short trailing edge extending transversely to the direction and bridging rear ends of the sides. A grit coating is provided both on the leading edge and on the trailing edge. The grit coatings extend partially from the respective edges onto adjacent portions of the sides. In addition the body is of rectangular section. Such a blade can be a standard jig- or reciprocating-saw blade, or can be continuous and formed as a band-saw blade.

Abstract: A saw tooth for a circular saw for a feller includes, in one embodiment, a square saw tooth body having a multi-faceted shape to be mounted on a holder and for receiving inserts fastened to inwardly sloping seating surfaces on the cutting end of the tooth body. The inserts are provided with cutting tips and cutting edges to form angled cutting edges about the entire periphery of the cutting end of the tooth body. Notches are made in the seating surfaces and inserts in order to permit adjacent inserts to overlap one another, such that the angled cutting edges are strengthened at their junctions, thereby reducing damage of the inserts and improving the cutting performance of the saw tooth.

Abstract: A perforation blade is used for cutting a perforated tear line in a bag to form an easy-open corner portion. The perforation blade includes a base formed to span the corner portion of the bag. The base has a first end adapted to extend to the end edge of the bag proximate a seal line, and a second end adapted to extend to one side edge of the bag. A series of closely spaced perforation teeth are formed with the base, and are adapted to penetrate the first and second walls of the bag to form a corresponding series of perforations at the corner portion of the bag. A starter tooth is formed at the first end of the base, and is adapted to cut a starter nick in a skirt of the bag between the end edge and the proximate seal line. A burst protection gap is formed between the starter tooth and a first of the series of perforation teeth. The burst protection gap is adapted for safely receiving the seal line of the bag to prevent severing the seal line when cutting the perforations.

Abstract: Cubic boron nitride tooling, e.g. for woodworking, is fabricated with the same geometries and machinery as is used for fabricating conventional carbide tooling.

Abstract: A bimetal saw band which is suitable for cutting materials of high hardness and wear resistance at high cutting speeds and with a reduced consumption of coolant comprises a support band which comprises from 0.20 to 0.45% of carbon, from 0.2 to 0.6% of silicon, from 0.5 to 1.8% of manganese, from 0.1 to 3.5% of molybdenum, from 1.0 to 5.0% of chromium, from 0.5 to 1.5% of nickel, from 0.1 to 1.0% of copper, from 0.1 to 2.0% of tungsten, from 0.1 to 0.5% of vanadium, from 0.01 to 0.30% of niobium and/or tantalum and less than 0.2% of cobalt, remainder iron including melting-related impurities, with the tungsten, vanadium and niobium/tantalum contents matched to one another, and hard-metal tips comprising at least 75% of tungsten carbide and 5 to 15% of cobalt, as well as grain stabilizers with a grain size of less than 5 &mgr;m.

Abstract: Disclosed are cutting blades for cutting tools and methods of making the blades. Such blades include tooth patterns with both set and non-set teeth. Each of the set teeth are set at an angle with respect to the jaw line of the blade, and each set tooth includes at least one surface feature that is effective to direct a portion of swarf that is produced via the cutting action of the blade into gullets of the blade such that less swarf overall is directed to the cutting surface of the objects being cut by the blade.

Abstract: The present invention relates to an improvement of the conventional sandwiched type saw blade shank by providing, as the intermediate layer, a coated thin sheet with tens of electro-conductive points or a thin sheet with multiple contacts to enhance weldability and to minimize the thermal deform or pressed marks, so that sound absorption, noise reduction and also heat dissipation may be maximized during a high speed cutting operation.

Abstract: A saw blade incorporates an integrated cant angle. The saw blade includes a cutting portion having a toothed edge and opposite edge. The toothed edge defines a cutting plane. A shank portion extends from the cutting portion and is laterally offset from the opposite edge of the cutting portion defining a step thereat. The shank includes an end portion including a mounting edge, the mounting edge and step define a mounting plane which is angularly offset from the cutting plane.

Abstract: The invention relates to a sawtooth wire for manufacturing an all-steel sawtooth wire arrangement for the swift of a card. The sawtooth wire has a foot section and a blade section adjoining the foot section at a foot shoulder, wherein the blade section has sawteeth formed by tooth cutouts extending from the edge of the blade section facing away from the foot section. The ratio of the foot width to the blade width at the location of the deepest tooth cutout is greater than 2 and preferably greater than 2.5.

Abstract: A cutting blade (10, 110, 210, 310, 410) is at least partially coated with an abrasive material (30, 32, 150, 250, 350, 450) applied by spraying metal particles onto one or both face surfaces of a cutting blade. The blade (10, 110, 210, 310, 410) is durable, with the abrasive layer (30, 32, 150, 250, 350, 450) typically not requiring replacement at anytime during the file of the table.