Abstract: A cutting knife includes a base coupled to a head unit of an agricultural combine harvester. The cutting knife includes a blade extending away from the base. The blade includes an edge and a plurality of cutting teeth formed from the edge. The plurality of cutting teeth includes a first grouping of teeth positioned along the edge having a first pitch. The plurality of cutting teeth includes a second grouping of teeth positioned along the edge having a second pitch less than the first pitch. The first grouping of teeth is positioned closer to an end of the blade opposite the base than the second grouping of teeth.

Abstract: A rotary cutting disc (10) comprising two coaxial mutually opposed disc-shaped elements (12a, 12b) each having a circumferential edge, wherein circumferential edges (14a, 14b) of the disc-shaped elements (12a, 12b) are joined together forming a cutting edge (16) of the cutting disc (10); wherein each of the disc-shaped elements (12a, 12b) comprises one or more at least partly curved elongated deformation lines (30), wherein the one or more deformation lines (30) have a radial distance from the centre (26) of the cutting disc (10) that increases along at least a part of the length of the deformation line (30). The rotary cutting disc (10) has an increased critical speed that allows improving the efficiency of a cutting operation with a cutting disc while maintaining acceptable levels of quality, cutting precision and safety.

Abstract: A saw blade includes a body and a cutting portion coupled to an edge of the body. The cutting portion includes a plurality of cutting teeth. The plurality of cutting teeth includes a first tooth form with an abrasive grit and a second tooth form without an abrasive grit.

Abstract: A mower assembly for cutting and mulching material. The mower assembly comprises a mower housing, a first disc cutter, a second disc cutter and an anvil. The first and second disc cutters are orientated such that their outer edges are spaced apart so that counter-rotation of the discs urges material to move between the discs from an inlet area toward an outlet area. Material travelling from the inlet area to the outlet area is subject to cutting and shredding by cutting teeth on the disc cutters. Material moving into the outlet area is subjected to further cutting and shredding through contact with the anvil.

Abstract: The problem of penetrating through nets and other objects is solved by cutting the object using concentric cutters in which a rotatable cutter having floating teeth rotates concentrically about a stationary cutter having fixed teeth. The object is cut by a severing action caused by the floating teeth of the rotatable cutter sliding against the fixed teeth of the stationary cutter. Embodiments of the invention include a UUV system for penetrating through fishing nets and other objects, concentric cutting assemblies for use in the UUV system and other systems, and a method for penetrating through fishing nets and other objects. A UUV system in accordance with an embodiment of the invention has a concentric cutting assembly at the forward end and a propulsor at the aft end. The concentric cutting assembly integrates seamlessly within the UUV housing and is deployed from the forward end of the UUV, enabling the UUV to quickly and efficiently penetrate through objects blocking its path.

Abstract: A grate for use in forming potato stick products having a wavy cross-sectional shape is provided. The grate includes a plurality of alternating convex segments and concave segments extending in a repeating pattern along a length of the grate. A plurality of spaced apart teeth extends from the plurality of convex segments and the plurality of concave segments. A distance between the spaced apart teeth defines a width of the potato stick products.

Abstract: A planar band saw blade having an outer cutting edge with a plurality of saw teeth also includes sets of secondary teeth placed in cutout portions along a centerline of the band saw blade. The secondary tooth sets provide portions within the body of the saw blade that provide additional cutting action that reinforces the primary outer cutting edge of the blade. The band saw blade may include teeth on each parallel edge and the interior tooth sets in each cutout portion alternatively point toward opposite edges.

Abstract: According to the invention, there is provided a cutter for a packaging apparatus. The cutter forms a shape. The cutter comprises at least one blade. Each blade comprises a plurality of first teeth and a plurality of second teeth. The first teeth are longer than the second teeth such that in use the first teeth contact a surface to be cut before the second teeth.

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: A blade is usable with a reciprocating saw imparting movement to the blade in a forward direction and a rearward direction to perform a cutting operation on a workpiece. The blade includes an attachment portion configured to couple to the reciprocating saw and a body extending from the attachment portion. The body includes a first profile portion and a second profile portion extending from the first profile portion. The second profile portion has a height less than a height of the first profile portion. The blade also includes a plurality of teeth formed on the body and defining a toothed cutting edge. The blade also includes a tip portion formed at a distal end of the second profile portion and terminating in a pointed tip. The pointed tip is configured to punch a hole through the workpiece and includes a toothless cutting edge extending substantially parallel to the toothed cutting edge. The toothless cutting edge extends from the toothed cutting edge to the pointed tip.

Abstract: A tooth is provided for a circular disc felling saw. When installed on a saw blade, the tooth has both leading and trailing cutting tips that cut the tree. The cutting discharge of the trailing cutting tips may tend to wear the rearward flank of the leading cutting tips. Either one or both of the primary and secondary cutting tips may include a wear insert, such as a ceramic wear insert.

Abstract: An electric saw device includes a first saw blade and a second saw blade. The first and the second saw blades are respectively driven by a small transmission shaft and a large transmission shaft to rotate in opposite directions. A round rib is disposed on an inner end surface of the first saw blade, and at least three recessed holes are arranged in a top end surface of the round rib at equal angle intervals. A steel ball is accommodated in each of the recessed holes, and protrudes out of the recessed hole. Protruding ends of the steel balls urge against an inner surface of the second saw blade, so as to limit a distance between the first saw blade and the second saw blade, and form a rolling friction when the first and the second saw blade rotate in the opposite directions.

Abstract: A tooth for a circular saw or a mower drum that can be used to cut standing trees or brush and undergrowth. The tooth has four cutting edges arranged in a first pair of opposed cutting edges that are generally straight and a second pair of opposed cutting edges that are generally concave. The tooth is mounted in a holder in a first or second cutting position that orients a cutting edge of the first or second pair to physically contact and effect a cutting method to a cuttable material. In a first cutting method, a generally straight cutting edge contacts the material, resulting in a slicing action. In a second cutting method, a generally concave cutting edge contacts the material, resulting in a gouging action. Teeth in the circular saw or brush mower alternate between first and second cutting positions, allowing both cutting methods to be applied to cuttable material.

Abstract: A bi-directional cutting saw blade, capable of produce a cutting effect in both directions of forward and reverse rotation as it has cutting edges disposed on leading and trailing rims of each saw tooth. An unsharpened obtuse angle of the trailing cutting edge of the saw tooth can scrape off burrs and debris of a cut. When a trailing cutting edge of a saw tooth is in a cut, a leading cutting edge of a next saw tooth has cut into the workpiece, so that the saw blade does not offset from the cutting direction when cutting a workpiece. In the application to a pair of dual saw blades, salient points are disposed on one of the saw blades so that the dual saw blades are coaxially and tightly spaced, thereby reducing frictional heat produced in the cutting operation, preventing deformation of the saw blades, and enhancing the cutting effect.

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

Abstract: A planar saw blade having an outer cutting edge with a plurality of saw teeth also includes sets of secondary teeth placed in cutout portions within the body of the saw blade. The secondary tooth sets provide portions within the body of the saw blade that provide additional cutting action that reinforces the primary outer cutting edge of the blade, and include deep gullets that aid in the removal of sawdust and debris.

Abstract: A saw includes a planar body having at least one cutting edge with serrated teeth. The planar body has cutout portions displaced from the outer cutting edges that include first and second sets of secondary teeth, which are positioned along first and second arcs concentric with the outer cutting edge or edges, at first and second radial distances from the center of the saw blade.

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 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 trimmer having first and second cutting blades. The first and second cutting blades are mounted so that first and second flat surfaces, respectively thereon, face and are substantially parallel to each other. A drive causes at least one of the first and second cutting blades to move relative to the other of the first and second cutting blades. At least one fastening assembly has first and second facing shoulders between which the first and second cutting blades reside. The at least one fastening assembly further has at least one biasing element that produces a force that biasably urges the first and second flat cutting blade surfaces towards each other.

Abstract: This invention relates to tiers of kerf engaging elements at saw blade sides. The tiers recede from the blade's most forward peripheral cutting elements and project laterally to engage the kerf in incremental steps as the blade advances into the material addressed. Each tier is designed to perform a distinctive action. Individual tiers may be designed to plane, or shave, or scratch, or scrape, or sand, or burnish. The mentioned preferred embodiment of this invention submits the kerf to coarse sanding, fine sanding, and burnishing with one pass of the blade.

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 two-sided saw blade, which may have differently sized or shaped teeth, is used in a reciprocal saw or, in an alternate embodiment, in a jigsaw. The saw may be used to cut different material without removing and reinserting a new blade. The saw can also be used from a variety of positions without removing the blade, reversing it, and reinserting it into the saw.

Abstract: A cutting tool for separating and formatting of sheet materials has a rotationally driven support body having cutting teeth arranged about a circumference of the support body. The cutting teeth have a tooth profile with a radially outwardly positioned front-cutting area with a separating cutting edge and a formatting area with main cutting edges determining the cutting width of the cutting tool. The tooth profile further has a transition area located radially between the front-cutting area and the formatting area. The main cutting edges in the formatting area are arranged radially separately from the separating cutting edges of the front-cutting area by the transition area, wherein the transition area has transition cutting edges adjoining the cutting edges and angled relative to the separating cutting edges toward a radial center axis of the cutting tool. The front-cutting area is symmetrical relative to the radial center axis of the cutting tool.

Abstract: In a sawing tool for a hand circular power saw with two coaxial saw blades (11, 12), which can be driven to counter-rotate in relation to each other, which each have an outer set of teeth (13, 14) that represents a main cutter, in order to improve the cutting result even with continuing wear on the cutting edge and in order to reduce damage to the teeth (13, 14) when the saw blades (11, 12) are imperfectly balanced, a trimmer (10) is disposed between the two saw blades (11, 12), which serves to cut away a piece of material possibly remaining in the kerf between the saw blades (11, 12) and which is non-rotatably attached to one of the saw blades (11, 12) and shares an axial overlap with the main cutters (FIG. 3).

Abstract: A thin saw blade with four cutting surfaces of fixed lengths in line, each cutting surface rotated with respect to the preceding cutting surface to enable a user to change cutting directions of the blade without rotating the material to be cut. A preferred embodiment uses the blade in a coping saw with each rotation being 90 degrees enabling rapid smooth cuts of thin materials for handicraft projects. Rubber O-rings secure the blade in anchor bolt slots to secure the blade while cutting in different directions. The blade could also be used in electric saber saws or bench jig saws which would require adjustment of the work support surface to change cutting directions.

Abstract: A trim saw is mounted in conjunction with a hogger, or device for reducing scrap to particles, or saw dust. The hogger is made up of a any desired number of units that will reduce scrap to sawdust. Each unit has a pair of oscillator plates that hold a pair of semicircular blade portions at an angle to the axis of rotation, so the blade portions sweep a wide kerf. Since the blades are generally conventional saw blades, they can be sharpened by conventional machines, obviating the need for hand sharpening. Also, the relatively fine teeth on the hogger blades allows substantially uniform power loading for uniform operation.

Abstract: A workpiece processing apparatus for processing a predetermined plate member and a sawing process method therefor. A workpiece processing apparatus which includes a workpiece mounting assembly for receiving a workpiece; a tool assembly having a tool mounting element configured for rotational and reciprocal motion, the tool assembly positioned adjacent to the workpiece mounting assembly; the workpiece mounting assembly being movable relative to said tool assembly to position the tool mounting element adjacent the workpiece; and a tool positioned in said tool mounting element and defining a longitudinal axis, said tool having a drilling portion and a cutting portion.

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 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 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 saw blade includes a very shallow cone shaped side for supporting an abrasive surface to sand smooth a cut surface of a work piece while the surface is being cut by the saw blade. To maintain the finished sanded surface of the cut perpendicular to a specified axis of the work piece, the axis of rotation of the saw blade is tilted to place a radial of the cone shaped abrasive surface orthogonal in three axis to the direction of saw cut being made.

Abstract: Multifunctional blade designs for rotational oscillating cutting include, in one aspect, different cutting teeth segments and cutting agent segments arranged along separate portions of a common cutting edge to carry out various cutting tasks. In another aspect, non-circular cutting blades have separate cutting edge segments, each segment having different cutting teeth or cutting agents. The blade edge may include one portion having grit bonded to the cutting edge to cut hard objects, and another portion having cutting teeth for cutting softer objects. Likewise, the blade edge may include two portions, each having cutting teeth of differing size and pitch to cut differing materials. Another embodiment comprises a triangular blade, the sides of the triangle provided with cutting grit bonded to the edges. Alternatively, at least one side of the triangle may include cutting teeth, so that each side of the triangle is adapted to cut different types of materials.

Abstract: A hand-held power-operated hedge trimmer for trimming plant growth such as hedges, shrubs, tree branches and the like. The hedge trimmer includes a housing containing a motor assembly, a blade assembly extending forwardly in a lengthwise direction from the housing, and a drive mechanism for coupling a movable cutting blade of the blade assembly to an output of the motor assembly for causing reciprocatory rectilinear movement of the movable cutting blade relative to a stationary combing blade in response to selective actuation of the motor assembly. The cutting blade includes a series of cutter teeth formed along its opposite longitudinal edges with each cutter tooth having a compound tooth profile. The compound tooth profile includes a pair of shear tooth segments formed along opposite lateral edges of the cutter tooth and a saw tooth segment formed at its distal edge between the shear tooth segments.

Abstract: A saw blade includes a very shallow cone shaped side for supporting an abrasive surface to sand smooth a cut surface of a work piece while the surface is being cut by the saw blade. To maintain the finished sanded surface of the cut perpendicular to a specified axis of the work piece, the axis of rotation of the saw blade is tilted to place a radial of the cone shaped abrasive surface orthogonal in three axis to the direction of saw cut being made.

Abstract: A saw blade with cutting wings on the teeth. The blade has a blade body, teeth located on an outer edge of the blade body, and cutting wings extending from either side of each tooth on the blade body. Each tooth is angled in a direction opposite that of the adjacent teeth to eliminate block cutting characteristics and to enhance the serrating effect of the teeth. A first wing is longer than a second wing and contains a barb that enhances the serrating effect of the wing. Both wings are beveled so that the sharpest edge of the wings is located on the outer edge of the wings. The cutting wings pre-cut a width of the material and reduce the splintering and shredding effects of the blade on the material.

Abstract: For dividing a chunk of material which comprises areas tending to deform as well as rigid areas, a cutter with a spiral cutting edge is provided. The cutting edge has two sections of which the first in the direction of rotation, is unserrated and undergoes a relatively rapid increase of radius. The second section in the direction of rotation is serrated and follows a minimal increase of radius. With a cutter thus designed, material can be cut smoothly in the region of its deformable portion and can be sawed just as smoothly in the region of its rigid portion.

Abstract: Shims are selectively added to, in one form of the invention, or removed from, in another form of the invention, the space between a cutter body and a circular saw blade in a cutter tool assembly for cutting a round on wood products, to compensate for the change in cutting radius that occurs when the tool is sharpened.

Abstract: A cutting member and machine for cutting elongate members is disclosed. The cutting member comprises a body having a cutting edge defining a cavity such that the cutting edge contacts a surface to be cut at at least two points. The cutting machine comprises the cutting member, a weight pivotally connected to the cutting member to define a arm-weight assembly, and a driven member defining a central opening, wherein the arm-weight assembly is pivotally attached to the driven member so as to drive the cutting member in a circular path around the central opening, the cutting edge of the cutting member being biased inwardly towards the central opening by the weight and the resultant centrifugal force.

Abstract: A cut off blade adapted for severing plastic film material folded in layers. The blade is a thin metal sheet including an attachment portion and a plurality of similarly shaped teeth defining a cutting edge portion of the blade. Each of the teeth defines parts of the first and second major surfaces in the shapes of isosceles triangles with two equal length sides terminating in points and having bases adjacent the attachment portion and aligned in a first direction along the blade so that the points project at right angles to the first direction. The angle between any portion of an edge surface of the blade along the cutting edge portion and the second surface when measured in a plane normal to the first direction is the same acute angle, and the metal of the sheet defining the edge surface along the cutting edge has been cold flowed toward the intersection thereof with the second major surface by a punch and die forming method to define a sharp edge at that intersection.

Abstract: An improved cutting tooth for a circular saw of the type commonly used to cut the bark off raw logs comprising a crescent shaped steel bit and a wedge shaped cutting tip affixed to an upper portion of the bit wherein the cutting tip is composed of a high impact resistant carbide alloy consisting essentially of a blend of 83.5% tungsten carbide, 16% cobalt and 0.5% tantalum carbide.

Abstract: A cutting tooth, viz. roughing tooth (2) and finishing tooth (3) made from cutting metal for a metal slitting saw, especially a circular disk saw, the geometry of said tooth being determined by the primary clearance angle (.alpha.), the rake angle (.gamma.), the radial clearance angle (.beta.), the tangential untoleranced dimension (s-e) and a tangential land (12) on the finishing tooth (3) with a negative relief angle (.epsilon.), in which for both the roughing tooth (2) and the finishing tooth (3) the cutting edge (7; 7', 7") is stabilized by a negative land (5; 5', 5"), and in which the angle (.chi.) between land and chip breaker face (4) is about 190.degree. to 240.degree., especially about 205.degree. to 230.degree..

Abstract: A self-sharpening perforating punch head for perforating a web of plastic film is formed of one or more plates of a semirigid plastic resin, e.g. acetal homopolymer. The head has a row of tapered and beveled teeth which form a cutting edge at the back plane of the head. The cutting edge renews itself as the material wears by plastic-on-plastic abrasion. There are gaps provided at intervals among the teeth.

Abstract: A brush cutting blade having a curved slitter type/non-raker type primary cutting tooth and a preceding appendage forming a combination depth gauge and small stem slitter. The primary tooth terminates over the blade body with the cutting edge provided by that curved portion of the tooth between its most lateral point and the point of termination over the blade body. The cutting edge is curved but outwardly directed in a slitter configuration throughout its length. The lateral point of the cutting edge determines the kerf width to prevent binding. The slitter cutting edge of the appendage is hook shaped to cut small willowy-type stems and the appendage has an upper inclined guide edge that guides the larger rigid-type stems into the primary cutting tooth. The uppermost point of this guide edge of the appendage provides a depth gauge for the primary cutting tooth.

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: The present invention relates to a circular saw blade comprising a first annular saw blade having a plurality of teeth projecting radially from the periphery thereof and a second circular saw blade having a plurality of teeth projecting radially from the periphery thereof. The first blade has a greater diameter and a smaller thickness than the second blade and the teeth on the first blade are angularly set so as to partially extend into the cutting plane of the second blade. The blades are mounted coaxially adjacent to one another such that when used to cut through a workpiece, the first blade makes a fast rough cut and the second blade follows partially within the path of the first blade and provides a smooth, finished cut.

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 woodworking machine to form finished dimensional lumber from cants by a single pass of the cants through the machine and comprising compression and feed rollers above and below a longitudinal path and parallel longitudinally offset arbors respectively are mounted above and below the path upon which spaced saw blades are mounted with opposed blades in common planes and of diameters adequate to form complete cuts through a cant during a single pass, the arbors also supporting between the blades additional cutters to plane the edges of the dimensional lumber and form rounded edges thereon.

Abstract: A tool for simultaneously resurfacing by cutting the face and overlying butt portions of shingles or clapboards forming the outside surface of a house or the like. The tool includes a housing in which a rotatable cutting disc is mounted for rotation such that two different cutting surfaces can simultaneously engage the surface, that is, the aforementioned clapboard or shingle surfaces simultaneously. The housing includes first guide means to separately position a series of first cutters such that the major face of the work surface is cut to the desired depth and separate second guide means to simultaneously regulate the depth to which the second cutters may engage the overlying or butt portions of the shingles or clapboards forming the work 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.