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

Abstract: A circular saw blade having a plurality of spaced teeth around its periphery and having plural slots extending inwardly from the periphery generally toward the center, the slots being spaced on the cutting side with a series of spacing elements individually secured to lands provided by notches or recesses which provide the lands.

Abstract: A circular saw is disclosed which employs unique tooth forms contributing to reduced noise. The saw in operation, because of the design of the tooth forms, reduces vibration of the saw plate caused by air turbulence as well as reduces air flow through the gullet of the saw blade. The overall result is a quieter saw. A narrow, shallow and generally square design gullet configuration contributes to noise reduction.

Abstract: Circular saw tool, with a single-ply or multi-ply disc-shaped saw blade and teeth distributed over the circumference thereof, the saw blade being provided on each side with a bonded covering.

Abstract: A rotary saw blade is provided with annular recesses on its two side surfaces, with the recess filled with a sound-deadening material such as melted metal. The sound-deadening material is sprayed into the recesses so that the entire saw blade need not be heated to any great degree. A layer of a binding material may also be sprayed into the recesses to increase the adhesion of the layer of melted metal to the rotary saw blade.

Abstract: A circular saw adapted to produce chip-size material when cutting wood. The saw comprises a saw blade with teeth distributed about the circumference of the blade. The teeth are separated from each other in such a manner that in cutting a kerf, wood material is chiseled away in relatively large chip size, and such material is permitted to fall away from the kerf with minimal tendency of crushing or fracturing which would reduce the chip size.

Abstract: This invention consists of a low noise circular disk blade having shallow peripheral gullets, said gullets being of a minimum radial depth whereby the sound generated by the blade's rotation is less than 90 decibels.

Abstract: A sound-damped saw blade comprising (a) a disc, (b) a viscoelastic material adhered to one major surface of the disc and a thin sheet over and coextensive with said viscoelastic layer, and (c) an edge coating covering the circumferential edge of said viscoelastic layer and said sheet, wherein said coating has an abrasion resistance, as expressed in percentage haze, of less than about 30 percent.

Abstract: A meat cuber for cubing frozen meat, wherein a three-stage cutting system includes a first cutting means in the form of a reciprocating knife having a plurality of equi-spaced alternately offset teeth for permitting reclaiming of meat dust as the knife reciprocates, a second cutting means in the form of a plurality of annular, rotating, saw tooth blades for cutting the so severed slab into a plurality of elongated strips, and a third cutting means in the form of a plurality of annular, rotating, saw tooth blades for cutting each of the so cut strips transversely into a plurality of cubes, the teeth of the second and third cutting means also permitting reclaiming of meat dust as the blades rotate.

Abstract: A straight saw blade adapted for rapid reciprocation, the blade being tapered in cross-section across a substantial part of its width such that it is thinnest at or near the points of the teeth and substantially thicker throughout the portion adjacent to the back. The blade is stiff enough to be operated from one end, without tension.

Abstract: An insulated saw blade for use with the automatic safety brake for rotary blade equipment, U.S. Pat. No. 3,785,230, to stabilize the capacitance field produced by the blade. The blade has an inner metallic part which is secured to the arbor of the saw an insulating ring rigidly secured to the inner part and extending completely therearound and an outer metallic ring rigidly secured to the insulating ring and having the saw teeth formed thereon. The insulating ring has a roughened surface on its opposite sides to assist in gripping the brake when applied thereto.

Abstract: The invention relates to a spiral saw blade wherein the teeth are divided into two or more groups with gaps or cut-outs between the groups of teeth, such gaps or cut-outs being void of teeth. The gaps or cut-outs are disposed diametrally opposite each other on the spiral saw blade, and, hence, on rotation the centrifugal forces go through the middle point of the saw blade and their maximum values are directed toward the groups of teeth respectively. Also, the invention provides teeth of varying heights with the first tooth of each group of least height and each succeeding tooth of progressively higher height, with a magnitude of height of the lowest compared to the highest no more than 2% of the diameter of the saw blade. The invention also provides a reinforcing salient in front of the first tooth of each tooth group which protects the first tooth from excessive stresses.

Abstract: A circular saw includes a plurality of teeth having an improved metal breaking geometry. The saw is especially adapted to cut hard, brittle materials such as steel bars and the like. The saw teeth are generated by a cup shaped grinding wheel having a grinding face on its inside surface. By bringing the rotating inner surface of the grinding wheel into contact with each tooth, it is possible to produce a working surface on each tooth which exhibits improved metal breaking and self-cleaning characteristics. The working surface thus generated is characterized by the fact that all points on the working surface which lie in the same given plane perpendicular to the axis of rotation of the grinding wheel are equally distant from any given point on that axis. The working surface is preferably a section of a cylinder or cone, but may exhibit irregularities or discontinuities for special applications.

Abstract: A method of sawing a wooden workpiece makes simultaneous use of a chip cung operation with chip cutting saw teeth provided along the leading edge of a saw blade and a cutting operation with knife edges provided on the same leading edge of the saw blade. Between each pair of adjacent chip cutting saw teeth on the leading edge of the saw blade a knife edge, also provided on the leading edge of the saw blade, is fed into the workpiece together with the saw teeth in a plane located within the kerf made by the saw teeth and in such a position relative to the saw teeth that this knife edge cuts into the workpiece or at least into the chip, which still adheres to the workpiece and is being formed by the one saw tooth, and cuts this chip into two portions, which when liberated from the workpiece under the action of the saw tooth are distributed on opposite sides of the saw blade into the clearances between the side surfaces of the saw blade and the wall of the kerf.

Abstract: The present invention relates to a method in the production of rotatable tools, such as saw blades or similar, comprising at least two preferably metallic discs interconnected by means of glue, solder or any other binding means or adhesive wherein spacing members of a uniform overall thickness are disposed between the discs to position the discs parallel to each other and to ensure a uniform layer thickness of the binding means. Said invention also relates to a means to perform the method and to the product achieved by the method.

Abstract: A coated steel product, namely, a cutting instrument such as a band saw blade, in which the body of the blade is of steel, the tooth tip is of impulse hardened steel and the tip is covered with a coating of titanium carbide or refractory metal carbide, the coating metal or compound having been deposited by ion plating onto the surface of the tip. The process through which the cutting tool is produced includes preshaping and sharpening the tool, then ion cleaning the tips, bombarding the tips with ions of the titanium or refractory metal followed by reacting the titanium or refractory metal with a carbon containing chemical or their carbides and then simultaneously subjecting both the coating and the steel tip to a magnetic flux for impulse hardening primarily the steel tip. Other coatings of metal carbides, nitrides, borides and metal compounds are described.

Abstract: A high speed circular saw blade exhibiting low operating noise characteristics comprises a plurality of narrow expansion slots up to about 3/32 inches wide formed in the outer edge of the blade at a negative angle of about 5.degree.-15.degree. with respect to a line extending radially from the center of the blade to the slots. Two to five slots are provided in each blade, with the depth of each slot being between about 3/4 to 21/2 inches, depending on the diameter of the blade. Expansion holes are provided at the bottom of each slot, and a further reduction in noise level is achieved by plugging these holes with a resilient material such as solder or the like.

Abstract: A powered saw developed for use in orthopaedic surgery has a strip-form blade carrier projecting from a casing in which it is driven at its inner end in an orbiting manner while further towards the carrier free end the carrier is constrained to allow longitudinal translation and pivotal movement. In consequence, the free end of the carrier, and all points of a blade projecting therefrom, are also subjected to an orbital motion. By appropriate location of teeth the blade can therefore cut in any combination of both sideways directions and also at its tip, and preferably has non-symmetrical teeth which are all raked in the same sense around the edge of the blade.

Abstract: The invention relates to a method of trimming selvage from a succession of books. According to the method, a saw is provided having a pair of oppositely facing surfaces which merge at a cutting edge. One of the surfaces is substantially flat throughout its length or throughout all but the area of the surface adjacent the cutting edge. The latter area is bevelled as is the other surface of the saw. The books are advanced toward the saw and the saw is so positioned relative to the books such that its cutting run is normal to the direction of book advance and is parallel to the plane of the pages of the books. The saw is also positioned such that its first-mentioned surface faces pages trimmed by the saw and its other surface faces selvage trimmed by the saw.

Abstract: A novel compound angle cutting edge configuration on a die rule, slitter blade, hollow punches, shearing blades, etc. provides cleaner cuts on stock material with less tonnage, improved cutting and cleaner cuts. The die rule cutting edge includes a plurality of side by side notches on only one side of the cutting edge defining a plurality of equally spaced piercing points. A primary cutting edge extends from each piercing point substantially to a next adjacent piercing point and forms a compound angle with an imaginary line through the tips of the piercing points of between about one and fifteen degrees. In use, the cutting edges are axially pressed through stock material to cut blanks of predetermined configuration. The cutting action consists of the piercing points penetrating the material and then the primary cutting edges slicing the stock material from one penetration point, substantially linearly and unidirectionally, to the next adjacent penetration point.

Abstract: A saw blade having one tooth tilting to the left, one tooth tilting to the right, and a third tooth straight, repeated throughout the saw blade. Tilt causes the set teeth to be shorter than the straight teeth which first contact and cut the foam and fiber glass strands. The cut strands are free to move away from the following raker teeth which remove additional foam, leaving the desired tufts.

Abstract: A circular saw blade provided with a circumferential zone which extends radially inside the saw blade teeth and has a reduced thickness relative to the saw blade, whereby the noise generated at high operational speeds is considerably diminished.