Abstract: The present invention discloses a sintered cemented carbide alloy with excellent corrosion and oxidation resistance. The alloy comprises 70-98 weight-% hard material essentially comprising WC in a monophase binder phase. It has been found that by the use of submicron WC the corrosion and oxidation resistance can be improved compared to known corrosion and oxidation resistant cemented carbide alloys.

Abstract: A saw blade 1 comprises a preceding tooth 5 constructed by a straight tooth performing no saw setting operation in left-hand and right-hand directions and a succeeding tooth 7 for cutting a cutting groove formed by the above preceding tooth 5 to enlarge and open the cutting groove in width. The succeeding tooth 7 has left-hand and right-hand set teeth 7L, 7R bent in the left-hand and right-hand directions by splitting an approximately central portion 7D of a tooth edge on a tooth line in its thickness direction; and the clearance between end tip insides of the above left-hand and right-hand set teeth 7L, 7R is smaller than the thickness of the preceding tooth 5. Further, the thickness of portions of the left-hand and right-hand set teeth 7L, 7R near their end tip portions are approximately equal to the thickness of portions of the left-hand and right-hand set teeth near respective base portions thereof.

Abstract: Bandsaw blade for sawing metal, including straight teeth and set teeth, the set teeth having equal height and occurring in pairs. A distance between the set teeth of each pair of set teeth being equal to the distance between the set teeth of every other pair of set teeth. The distance from each set tooth to an adjacent straight tooth being larger than the distance between the set teeth.

Abstract: In a saw blade having a cutting edge defined by a plurality of teeth disposed along the blade, each tooth includes a tip, a rake face, and a curvilinear base surface. The tip of each tooth and the tip of the next consecutively disposed tooth cooperate to define a pitch distance therebetween, with the curvilinear base surface and the tip of each tooth cooperating to define a maximum gullet depth. In addition, the rake face and the curvilinear base surface of each tooth define an effective gullet radius greater than about 25% of the pitch distance, and also greater than about 55% of the maximum gullet depth.

Abstract: A disk cutter has an annular disk-shaped base which is composed of a first disk and a second disk spot-welded at a plurality of portions to the first disk. Each of the first and second disks has a plurality of holes formed therein. The holes are circumferentially spaced at an equal interval with the holes of the first and second disks being alternately arranged. The base has a peripheral edge with a plurality of tool receiving recesses formed therein. A plurality of hardened cutting tool inserts are fixed to the base at the recesses.

Abstract: A tool having a body with two broad sides and a margin along which a cutting edge extends, and discrete, discontinuous protrusions from at least one of said broad sides, spaced from said cutting edge and from one another. The protrusions can take the form of concave dimples with a ridge on their perimeter or convex dimples with a smooth outermost surface, with or without complementary concave dimples, which preferably, but not necessarily, have ridges on their perimeters.

Abstract: A knife projection sensing system for cutting machines having a rotatable surface adapted to retain a plurality of cutting knives. The system employs a plurality of sensors mountable to the cutting machine to be stationary with respect to the rotatable surface. The sensors generate a signal capable of indicating the position of each cutting knife as the knives rotate past the sensors. A microprocessor in communication with the sensors analyzes the signal generated to determine the projection of each knife from a reference surface and to determine if the projection of at least one of the plurality of cutting knives deviates outside preset desirable limits. The projection status of the knives is communicated to an operator by a light display or paper printout. The system can be used to ensure that knives are correctly installed in the cutting machine and to monitor knife position during normal operation. The system can also be used to determine when knives need changing for sharpening.

Abstract: Saw blade utilized for applications in which two saw blades are arranged located in an adjacent relationship and with opposed rotary direction in relation to each other. Every side portion of each saw tooth adjacent to a first side plane, being the side plane in use intended to be located adjacent to a similar co-acting saw blade, extending substantially parallel in relation to the first side plane, but with an extension more closely related to the central portion of the saw blade, separated from the first side plane by a smaller distance. Furthermore, the outer edge portion of each saw tooth adjacent to a second side plane of the saw blade is arranged with a peripherally initially substantially straight part, located outside the second side plane and in a substantially parallel relationship thereto, and which is transformed into an inclined part in relation to the second side plane, arranged to create a clearance angle.

Abstract: A pruning saw includes an elongated sawblade which has a line of cutting teeth. Opposite sides of the blade extending between the line of teeth and the back edge are concave. A thinnest waist between the concave sides is located closer to the line of teeth than to the back where the blade has its maximum height. A front edge of the blade forms a rounded corner where it intersects the back edge.

Abstract: A carbide-tipped circular saw blade is formed by brazing cutting tips of tungsten carbide to the teeth of a steel blade blank, thereby creating discoloration on the planar surfaces of the blade adjacent the rim. Substantially the entire surface of the blade is sandblasted with blast media to remove the discoloration while generating a substantially uniform coloration and texture to the planar surfaces of the blade. User-readable graphics are overprinted upon the blasted surface. The graphics and the surface appearance of the blasted area are selected to be at a predetermined contrast, and the carbide cutting tips retain a visual appearance different from the rest of the blade, such that the graphics and cutting tips are visually perceptible to a potential purchaser at the blade's point of sale. The saw blade surfaces are sandblasted by jets directed at both sides of the saw blade. The blast nozzles are oriented such that the vertical components of force of the jets offset one another.

Abstract: A saw blade is stamped with a circumferential edge. At least one gullet and shoulder are formed in the circumferential edge. Likewise, a tooth pocket is formed in the circumferential edge. The tooth pocket is defined by a wall, generally radial to circle, on the shoulder, and a shelf substantially perpendicular to the wall. A tooth is secured, ordinarily by brazing, in the pocket such that a portion of the shelf extends beyond the front face of the tooth towards the gullet so that the tooth can be brazed along its entire lateral edge such that resultant forces in the tooth are transmitted to the body of the blade. After the tooth is positioned into the tooth pocket, the tooth, as well as a projection of the blade shoulder, are ground off so that the tooth and shoulder are flush with one another. Thus, the tooth longitudinal edge is in complete contact with the shoulder wall maximizing its strength.

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 cutting tool is provided which includes a steel metal body and a cemented carbide cutting tip secured to the metal body by a metallic layer. The metallic layer has a high-strength metallic portion and a high-toughness metallic portion. The high-strength metallic portion is made of a metal having a thermal expansion rate between a thermal expansion rate of the metal body and the thermal expansion rate of the cutting tip. The high-toughness metallic portion is located between edge portions of a securing region of the metal body and the cutting tip and has toughness larger than that of the high-strength metallic portion.

Abstract: A cutting tool insert includes a cutting tip mounted into a first recess of a molded hard refractory compound insert having a second recess of preselected size and shape for locating the insert to a cutting tool. A preferred cutting tip is a diamond and a preferred hard refractory compound is a tungsten carbide with a cobalt binder.

Abstract: A saw tool comprises a housing for incorporating a driving device therein, a base attached to the housing, a driving arm connected to the driving device to effect a reciprocating orbital motion, and a saw blade attached to the driving arm and extending through a slit in the base. The saw blade has a first saw tooth section formed on a top end thereof for biting a workpiece and a second saw tooth section formed on one side thereof. A rectangular through-hole can be accurately and rapidly formed in a workpiece such as a plaster board or veneer board, etc., with this saw tool.

Abstract: Accessories for an angle grinder include a rotary disc cutting tool and a rest for supporting the grinder on a surface to be shaped. The rest may be a non-rotating nose beneath the grinder or a rubbing contact mounted on a flat tool, or it may be part of a convex tool. Tilting the grinder about the rest give effective control of the tool. Steeper tilts cause the cutting surface to bite more deeply into the work surface. The grinder is stroked toward the user with the cutting zone trailing. Most disks are perforated. Work to be shaped can be seen through the spinning disk during use.

Abstract: A reciprocating saw blade moved in opposite directions parallel to a longitudinal axis is formed with at least one row of longitudinally succeeding teeth having tips all lying on a common tip line parallel to the longitudinal axis and including even teeth all oriented in one direction parallel to the axis and odd teeth alternating with the even teeth and all oriented in the opposite direction parallel to the axis. Each even tooth forms with one of the adjacent odd teeth a double tooth and the tips of the teeth of each double tooth are set laterally of the blade to one side with the lateral set by an offset that alternates longitudinally from double tooth to double tooth to opposite sides of a center blade plane. The offset is the same for all teeth. Each tooth has a relatively steep leading edge and a relatively shallow trailing edge, relative of course to the respective longitudinal direction.

Abstract: A two sided pruning saw blade has a top cutting edge used for making an undercut of a limb while the bottom cutting edge is used for regular pruning. Both the top cutting edge and the bottom cutting edge have a compound curve containing two radii of curvatures which are different from one another.

Abstract: A band saw blade or hacksaw characterized because of it is machined with two rows of a plurality of cutting teeth, sustained and projecting from the base itself of the laminar body of the blade, the saw presents a laminar body at one of its ends while at the other end there are teeth with different geometries according to the use for soft cuts or hard cuts along the edge of said body of the band saw, being said rows formed by a pair of teeth of the same geometrical sizes of inverted "V" shape, but being in turn projected at an angular direction according to the required number of teeth +10 degrees, which is equivalent to the desired angle toward the external part of its axis, one with regard to the other, and alternatively followed by only one straight tooth of the same depth and so on, successively.

Abstract: A saw blade is stamped with a circumferential edge. At least one deep gullet and shoulder are formed in the circumferential edge. Likewise, a tooth pocket is formed in the circumferential edge. The tooth pocket is defined by a wall, generally radial to circle, on the shoulder, and a shelf substantially perpendicular to the wall. A tooth is secured, ordinarily by brazing, in the pocket such that the thickness of the tooth is substantially equal to the depth of the shelf and the face of the tooth is continuous with the gullet. The tooth may be brazed along its entire lateral edge such that resultant forces in the tooth are transmitted to the body of the blade. After the tooth is positioned into the tooth pocket, the tooth, as well as a projection of the blade shoulder, are ground off so that the tooth and shoulder are flush with one another. Thus, the tooth longitudinal edge is in complete contact with the shoulder wall maximizing its strength.

Abstract: A high speed rotary cutter assembly for cutting sheets of elastomeric materials wherein a rotary blade is affixedly mounted on one end of a spindle and rotates therewith at a rotational speed greater than 2000 rpm. The rotary blade includes a generally planar cutting surface and a tapered back surface to provide a clean cut and minimize abrasion of the cut surface. The rotary blade further includes between 4 and 40 peripheral lobes, each having an attack surface and a trailing surface. The trailing surface is cut more sharply than the attack surface to provide relief to the cut elastomeric material. The spindle includes a spindle bore which communicates cooling air to the rotary blade. The rotary cutter assembly also includes preloaded, permanently lubricated, angular contact ball bearings and a labyrinth seal to provide high speed operation without heat build-up.

Abstract: A saw blade has a plurality of teeth with each tooth formed by a beveled leading face, a beveled trailing face and a chamfered surface located on the trailing face of each tooth. The trailing and leading faces are beveled in opposite directions in alternate order throughout the saw blade prior to the forming of the chamfered surface. The beveled leading face of each tooth intersects the chamfered surface on the trailing face of each tooth to form a curved cutting edge having a negative rake angle. The beveled faces are manufactured by first forming a plurality of rough-formed gullets. The rough-formed gullets are then finished-formed into beveled gullets by a cold-forming operation prior to the grinding of the chamfered surface to form the curved cutting face of the tooth.

Abstract: A circular brush cutting blade with peripheral cutting teeth. Segments are bent or deflected out of the blade body at an angle to the plane of the blade less than normal. The segments are configured to provide an inclined leading edge for each segment that cuts a laterally extended path with movement of the blade laterally or axially. The segments produced by folding the segments around a base line or juncture with the blade body whereby the opening through the blade created thereby is radially outward of the juncture.

Abstract: A log band saw blade for primary wood processing, consisting of a series of different modules (M1, M2, M3 . . . ) or identical modules, each including a number of teeth (D) having variable characteristics determined in accordance with all the relevant technical criteria. In each module, the tooth portion located in front of the lowest point has a variable shape (FV) while the tooth portion located therebehind has a constant shape (FC).

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 modified reciprocating saw blade for use in association with a saw blade holder, shingles and nails, the apparatus comprises a blade member being formed in an elongated planar configuration with an inboard end, an outboard end and a central section, the inboard end being formed as a universal blade mount to permit coupling to a saw blade holder in an operative orientation, the central section having parallel linear upper and lower edges; and the outboard end of the blade member having an upper edge and a lower edge, the lower edge including a cutting region having a length of about one-third of the total length of the blade member, the cutting region including a plurality of cutting teeth, in an operative orientation the inboard end of the blade member being coupled to a saw blade holder, the configuration of the blade member permitting a user to cut nails which secure shingles without damaging adjacent shingles.

Abstract: A saw tooth apparatus is adapted to be connected to and driven by a power source and includes a circular disk-like base connected to the power source. The circular disk-like base is bisected by a centrally located center plane. A plurality of tooth supports are distributed peripherally around the circular disk-like base. Each tooth support has a minimum transverse tooth support thickness, a maximum transverse tooth support thickness, and a tooth support radial height from a geometrical center of the circular disk-like base. A plurality of teeth are provided, and each tooth is supported by a leading side of a respective tooth support. Each tooth includes a most radially distal tooth portion, a pair of arcuately contoured intermediate tooth portions located symmetrically on either side of the center plane and adjacent to the most radially distal tooth portion, and a least radially distal tooth portion located adjacent to the pair of arcuately contoured intermediate tooth portions.

Abstract: In a cutting disc which has a plurality of radial slots connecting with the peripheral edge of the disc, a transverse slot is located at the base of each radial slot. This transverse slot comprises a thin, arcuate slot positioned concavely to the peripheral edge of the disc. Each end of the transverse slot terminates in a hole. All corners formed between the transverse slot, radial slot and holes are smoothly contoured.

Abstract: A square saw tooth having four cutting edges of the type which is rotatable about its axis on a saw disc to present a fresh cutting edge when the radially outermost edge wears out has carbide wear plates covering the high wear areas of its attack face and providing its cutting edges. A wear plate is provided at each corner of the attack face, and each wear plate has a flat rear surface for attachment to the tooth body and a front surface of a complex shape, having plateau surface areas at the corners, where the plates are thicker, and one or more cylindrically curved concave surfaces which recede from the plateau areas toward the interior of the attack face, so that the plate recedes in thickness away from the plateau area. This construction helps provide more uniform wear over the surfaces and edges of the attack face for a more efficient consumption of the wear plates.

Abstract: A cutting tool insert includes a cutting tip mounted into a first recess of a molded hard refractory compound insert having a second recess of preselected size and shape for locating the insert to a cutting tool. A preferred cutting tip is a diamond and a preferred hard refractory compound is a tungsten carbide with a cobalt binder.

Abstract: An improved circular saw blade is provided which has a plurality of dimples formed on the body of the blade by cold-working the blade. The dimples each include a circumferential ridge which extends above the surfaces of the blade's body. When a side load is applied to the work piece, the ridges contact the one of the walls defining the kerf being cut that is forced by the load against the blade, so that the surface of the blade's body is spaced from the wall. The dimples are formed by cold working the blade, which stiffens the blade, reducing the vibration of the blade during the cutting process. The dimples and their ridges also provide greater heat dissipation, and tend to provide a laminar flow of air over the surface of the blade, acting much as the dimples of a golf ball.

Abstract: A disk-type cutting tool having a plurality of hardened inserts that are received in recesses formed in the periphery of a base disk. Each insert has a shank portion that is received in the recess and which defines a shoulder that is in abutting engagement with one side of the base disk. This provides a mechanical interlock and location for brazing operation, and also increases the amount of surface area for brazing to provide a more rigid assembly.

Abstract: A circular saw blade includes a disc portion whose peripheral portion comprises a series of straight sections. A segment plate which carries at least one replaceable cutting member is attached to each straight section. Each segment plate has a first slot for receiving the cutting member and a second slot for receiving a clamping wedge. A portion of the segment plate disposed between the slots defines a clamping area which is pushed tightly against the cutting member by the clamping wedge. Each segment plate has a projection received in a recess of the disc.

Abstract: A saw blade is stamped with a circumferential edge. At least one gullet and shoulder are formed in the circumferential edge. Likewise, a tooth pocket is formed in the circumferential edge. The tooth pocket is defined by a wall, generally radial to circle, on the shoulder, and a shelf substantially perpendicular to the wall. A tooth is secured, ordinarily by brazing, in the pocket such that a portion of the shelf extends beyond the front face of the tooth towards the gullet so that the tooth can be brazed along its entire lateral edge such that resultant forces in the tooth are transmitted to the body of the blade. After the tooth is positioned into the tooth pocket, the tooth, as well as a projection of the blade shoulder, are ground off so that the tooth and shoulder are flush with one another. Thus, the tooth longitudinal edge is in complete contact with the shoulder wall maximizing its strength.

Abstract: A stump cutting tool assembly for a stump cutting apparatus having a rotatable cutting wheel includes at least one tool holder removably secured to the cutting wheel, at least one cutting tooth mounted circumferentially and removably to the at least tool holder, the at least one tool holder including a wheel portion extending circumferentially along the cutting wheel and a tool portion extending axially at an angle to a plane of the wheel portion, the tool portion having an aperture extending circumferentially therethrough and the at least one cutting tooth including a shank and an insert attached to the shank.

Abstract: A circular saw blade having a plurality of spaced sets of teeth, each set including a first forward ripper tooth and a second rearward cleaner tooth. The top surface of each member of the pair is slanted in an opposite direction, while the ripper tooth of each pair is preferably partially chamfered on its two front edges. Each member of the pair has its two side surfaces tapering inwardly toward its respective rear surface. The cutting face of the ripper tooth is longer than the cutting face of the associated respective cleaner tooth. Each ripper tooth is preferably spaced about 15 degrees around the outer periphery of the blade from the next adjacent ripper tooth, while each associated cleaner tooth is located about 5 degrees behind the respective ripper tooth. In this manner, a single blade may be used as an all-purpose cutting blade to make clean cuts in various media without splintering.

Abstract: A high speed hand tool includes a saw disc having less than ten teeth, preferably four. Each tooth has a radial flank, which preferably inclines forward in the cutting direction, and a tangential flank, which has a small clearance angle. The teeth may have a greater thickness than the disc itself which thickness, in that case, diminishes in a direction opposite to the direction of rotation. Alternatively, the teeth may be offset alternately to the right and the left. The invention also comprises an adjustable protective device which enables setting the depth of a perpendicular saw cut.

Abstract: A dual utility hacksaw blade includes additional mounting through holes. The first set of holes (outer) being the mounting holes for the use of the saw as a conventional hacksaw and the second set of holes being initially pilot holes to be enlarged by the end user when the second utility is desired. The method of the invention also recommends enlarging the first set of holes for mounting in the reciprocating saw as the second utility. Additionally, the blade may include construction facilitating breakage of the hacksaw at predetermined areas and in predetermined angles to provide the second utility. The hacksaw may also simply, and preferably, be cut or broken off for the second utility.

Abstract: A square saw tooth having four cutting edges of the type which is rotatable about its axis on a saw disc to present a fresh cutting edge when the radially outermost edge wears out has carbide wear plates covering the high wear areas of its attack face and providing its cutting edges. A wear plate is provided at each corner of the attack face, and each wear plate has a flat rear surface for attachment to the tooth body and a front surface of a complex shape, having plateau surface areas at the corners, where the plates are thicker, and curved surfaces which recede from the plateau areas toward the interior of the attack face, so that the plate recedes in thickness away from the plateau area. This construction helps provide more uniform wear over the surfaces and edges of the attack face for a more efficient consumption of the wear plates. In an alternate embodiment, the plateaus are provided at the corners of a tooth having a spherically concave attack face so as to inhibit wear of the corners.

Abstract: A saw blade is provided with recurring groups of teeth. Each group of teeth includes one straight tooth, an even number of high set teeth, and an even number of low set teeth. Distances from all of the teeth in the group to a corresponding, immediately preceding teeth are different for all of the teeth. Distances from all of the teeth in the group to a preceding tooth of the same height are different for each tooth. Distances from all of the set teeth in the group to the nearest preceding set tooth with the same set are different for each set tooth. No high teeth are immediately adjacent.

Abstract: A square saw tooth having four cutting edges of the type which is rotatable about its axis on a saw disc to present a fresh cutting edge when the radially outermost edge wears out has carbide wear plates covering the high wear areas of its attack face and providing its cutting edges. A wear plate is provided at each corner of the attack face, and each wear plate has a flat rear surface for attachment to the tooth body and a front surface of a complex shape, having plateau surface areas at the corners, where the plates are thicker, and curved surfaces which recede from the plateau areas toward the interior of the attack face, so that the plate recedes in thickness away from the plateau area. This construction helps provide more uniform wear over the surfaces and edges of the attack face for a more efficient consumption of the wear plates.

Abstract: A circular saw blade with improved stability, the blade having a plurality of radial expansion slots, preferably having a "J"-shape. The blades may also have a plurality of arced body slots and may be coated with a "TEFLON" paint mixture.

Abstract: An apparatus and method for processing and cutting structural concrete is disclosed in which the apparatus includes a first, larger cutting blade and at least one smaller cutting/finishing blade positioned adjacent to the larger cutting blade. The smaller blade have a beveled or concave cutting surface so that as the larger cutting blade forms cuts into the concrete, the smaller cutting/finishing blade rounds or bevels the edges of the cut. The rounded or beveled edges have a greater surface are and, therefore, additional strength to prevent chipping or cracking along the cuts. In the preferred embodiment, a smaller blade is positioned adjacent to each side of the larger blade to round or bevel both edges of the cut as the cut is formed by the larger blade. In accordance with one aspect of the invention, the above described apparatus can be used on previously made cuts in concrete to round or bevel the edges and avoid breakage or chipping.

Abstract: Saw blade, especially a circular saw blade, with replaceable tips wedged in recesses along the periphery of the blade, and held there by elastic forces. Inwards of each recess, but not connected with the recess, at least one tension distributing hole is provided. The contour of the blade body runs inwards from a line between the edges of the tips so far that the bottom of the contour lies farther from the line between the tips than the outer portion of the tension distributing holes, but closer to that line between the tips than the inner portion of said holes. With this arrangement the elastic wedging forces produce tangential tension stresses and only local compressive stresses.

Abstract: An improved saw blade for portable reciprocating power saws in which the end of the blade is curved to enable self starting of the blade while minimizing blade breakage.

Abstract: An agricultural baler for making cylindrical bales of crop material having a sledge assembly moveable between bale starting and full bale positions. The sledge assembly includes a plurality of rollers which cooperate with an array of belts to define a bale forming chamber. A dispensing mechanism is provided for dispensing web material, such as net or the like, into the bale forming chamber whereupon it is wrapped circumferentially around a cylindrical package of crop material in the bale forming chamber. Included along the path of the net prior to being fed into the chamber is a severing assembly for cutting the net after it has been wrapped around the cylindrical hay package formed in the chamber. The net severing assembly includes a unique severing element that provides improved net cutting.

Abstract: A circular saw blade is disclosed with narrow radial slots to avoid tangential stress. In order to lower the noise level and the cracking failure risk, a narrow arcuate cutout is provided in the direction of the slot adjacent to at least one end which cutout is not continuous with the slot. The parts of the cutout closest to the slot comprise at least one of the ends of the cutout, and the distance from the slot end to the nearest end of the cutout is less than the blade thickness.

Abstract: A bit with a fiber cutter for a rosser head debarking machine. The bit has a base for mounting the bit onto the rosser head. The striking edge of the bit is connected to the base and comes into contact with bark and removes the bark as the rosser head spins. The bit has at least one replaceable fiber cutter that includes a cutting edge that cuts through the bark or fiber within the bark as the rosser head spins. Preferably, the fiber cutter is disk-shaped and tapered away from the striking edge and cuts through the fiber in the bark in a perpendicular direction to the fiber. The cutter can be connected to the bit by a threaded bolt that is positioned through a hole in the middle of the cutter and into a threaded hole in the bit. The bit can have threaded holes on both sides to allow two cutters to be installed or for the bit to be rotated.

Abstract: A blade for a surgical saw has an elongate body with distal and proximal ends, and a plurality of teeth formed on an outwardly facing edge surface of the distal end. The spaces between adjacent teeth are defined by surfaces which lie in planes which are non-perpendicular to the substantially flat surfaces which define the body of the blade. These non-perpendicular surfaces guide cuttings generated by the teeth laterally toward the flat surfaces of the blade and outwardly toward the proximal end of the blade as the blade advances in a cut. Each of the teeth formed on the edge of the blade has a pointed form. Approximately half of the teeth lie in a row in which the respective points lie in a first cutting plane which extends in parallel with, and lies adjacent a first side of, a plane which extends longitudinally through the center of the blade body.

Abstract: An improved saw blade includes groups of saw teeth disposed along the cutting edge of the blade. Each group of teeth includes, in relation to the cutting direction of the blade, an unset leading tooth followed by two pairs of trailing teeth alternately set in opposite lateral directions outwardly of the centerline of the blade. The first pair of trailing teeth are generally of the same height as the leading tooth and the second pair of trailing teeth are shorter and have a substantially wider set than the first pair. The pair of trailing teeth that are shorter and wider set are disposed in consecutively and interposed relation between the first pair of trailing teeth. The set distance of the first pair of trailing teeth is approximately 50% of the set distance of the second pair of trailing teeth.