Abstract: The invention relates to knives and in particular the knives of the type of construction described and claimed in British Patent No. 2,108,887, where the blade has a V-shaped cutting edge centrally located on a parallel sided blank with the edge flat ground to one side and ground with formulations such as serrations or serrations and scallops. The object of the invention is to improve such knives by increasing the strength at the cutting edge, which objective is met by a construction where along that side of the V-shaped cutting edge provided with formulations a number of interruptions are provided in spaced relationship along the length of the cutting edge to assist cutting action, and interruptions to said formations being provided in spaced relationship along the length of the cutting edge to group said formulations into discrete lengths, and said interruptions being such as to maintain a continuous cutting edge along the length of the blade.

Abstract: Sawblades for cutting materials containing abrasive grains or fibers with a power saw utilizing two reciprocating sawblades in contact with each other guided by a groove in a guidebar, all teeth on one blade pointing forwards and all teeth on the other blade pointing backwards. The teeth are located with unequal distances chosen so that two teeth on the first blade will not simultaneously be opposite two teeth on the other blade with the same distance as the teeth on the first blade.

Abstract: A scalloped cutting edge is formed on a knife blank by disposing the blank between corresponding faces of a punch and die assembly, whereby a resilient face of the punch comprises the blank into a plurality of scallop-shaped depressions formed in the face of the die, thereby imparting a corresponding scalloped configuration to the edge portion of the blank.

Abstract: The anastomosis trimming device is used for trimming one end section of a tubular structure, such as a blood vessel or vascular graft, which is to be anastomosed, to provide the anastomotic end with a smooth, reproducible shape. The end is trimmed in such a manner as to mate with a similarly trimmed end of a second tubular structure or with an incision in the side of a second tubular structure. The device comprises first and second arms pivotably connected to each other at one end, with the first arm mounting a cutting die including a cutting element on a free end thereof. The cutting element faces toward the second arm, and the free end of the second arm mounts a mating element facing toward the first arm which, upon pivoting of the free ends of the first and second arm, mates with the cutting element on the first arm.

Abstract: A knife blade suitable for use as a spanner wrench in the installation and removal of choke tubes in shotguns, characterized by recesses on one edge, preferably matching the diameters of 12 and 20 gauge shotguns.

Abstract: The disclosure relates to knife blades for precision cutting, such as in optical surgery, wherein the blade or cutting edge is formed from a molded plastic filled with particulate material which is much harder than the plastic, the particles of particulate material being generally smaller in their largest dimension than the radius of curvature of the apex of the cutting edge. A thin coating of a metal which is much harder than the filled plastic is coated onto the cutting edge to replicate the molded shape and provide substantial additional hardness to the blade edge. In a further embodiment, a transducer is molded into the blade body adjacent the edge with all processing steps being at temperatures below those harmful to the transducer. Another embodiment provides light conducting elements molded into the blade body for measurement of cut depth or the like.

Abstract: A serrated-edge knife, the blade of which is provided on one side with a plurality of scallops and on its other side with a plurality of closely spaced serrations, the scallops intersecting the serrations to produce a fine saw-like edge substantially centrally of the thickness of the blade.

Abstract: A saw blade, for a power saw having two such blades arranged adjacent and parallel to each other and reciprocating in opposite directions, comprises an elongate blade member having teeth along a bottom edge. The teeth comprise at least three types, a first type being at an outer surface of the blade member, a third type being at the inner surface, and the second type being therebetween. The first type are shaped to produce on the blade's bottom edge an outward force away from the inner surface while cutting a workpiece, and the second and third types are shaped to produce on the blade's bottom edge an inward force, the resultant force on the teeth while cutting urging the teeth in an inward direction away from the outer surface towards the inner surface. When the power saw is operating with a pair of these blades, the blades are urged together at their teeth by the cutting action so effectively eliminating penetration of sawdust and cuttings between the pair of blades.

Abstract: In one exemplar embodiment, a knife for de-veining, peeling and butterflying shrimp is disclosed having a handle and an elongated arcuate knife blade secured to the handle and extending forwardly thereof, the knife blade having an intermediate toothed blade portion disposed adjacent the handle and an arcuate blade portion extending forwardly of the intermediate toothed blade portion, the arcuate blade portion having a curvature approximating the body curvature of a de-headed shrimp. The arcuate blade portion has an upper convex cutting edge disposed thereon and a lower concave cutting edge adjacent the tip of the blade. The intermediate toothed blade portion has a plurality of spaced teeth aligned in a ramp configuration from front to rear adjacent the handle. When used, the knife tip is thrust through the body of a de-headed shrimp to slice the shrimp body along its longitudinal length to a depth traversed by the upper and lower cutting edges.

Abstract: The tool includes a handle portion and a blade portion firmly attached to and extending from one end of the handle portion. The handle portion is substantially straight and is adapted to be grasped by the four fingers of the hand exclusive of the thumb. The blade portion extends outwardly, transverse to the axis of said handle portion, and is adapted to be engaged by the thumb of the user to grasp a weed to be pulled between the blade portion and the user's thumb.

Abstract: An attachment for a portable jig saw permits a concurrent use of a pair of jig saw blades. The blades are each attached to a holder by threaded fasteners, while the holder is then threadably attached to the jig saw. The spacing between the blades may be varied by an adjustment of the holder.

Abstract: A blade set for an electrical knife comprises two parallel extending blades arranged adjacent with their inner faces facing and joined to one another. In use, for example, for slicing bread, the two blades are alternately reciprocated by the drive motor of the knife. Each blade has a series of indentations in its lower edge between which projecting teeth are defined. The tip of each tooth has a small concave notch, in the form of a circular arc, which extends between the edges of the tooth and which has a chamfer. The ends of this notch form two spaced points.

Abstract: A surgical saw including a shank extension is adapted for securement within a reciprocating power handle held within the hand of a surgeon. The saw comprises an elongated, concave, curved, relatively thin blade, the blade having X-, Y-, and Z- axes, the concave curve of the blade beginning on the X-axis at about 60% of the length thereof while turning into the Z-axis and, at about 80% of the length of said blade, also turning into the Y-axis, wherein the concave curve of the blade will thereby follow the anatomic curve of the nasal-maxillary junction, the blade also defining a plurality of cutting teeth along the inferior cross-sectional edge of the XY plane of such teeth.

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

Abstract: The tool comprises a handle attached to a blade having a series of V-shaped, tapered corrugations extending substantially over the length of the blade and traversing the width of the blade. The edge of the blade at the tapered end of the corrugations is sharpened to form a cutting edge which is curved in the plane parallel to the longitudinal direction of the corrugations to conform more or less to the surface curve of the fruit. It is especially useful for crowning melons.

Abstract: A pair of hair trimming shears has two pivotally connected blades with integral handles. Each blade carries a plurality of teeth which project upwardly from the surface of the blade; when the blades are closed upon one another, the tooth peaks on one blade engage the roots of the teeth on the other blade in meshing engagement. The teeth are of irregular triangular cross-sectional configuration, which produces a non-uniform, zig-zag cut line that disappears when combed. Thus, the shears permit shortening of hair length without creating undesirably defined cut lines.

Abstract: Disclosed is a blade for a cross-cutting saw that includes a plurality of alternately splayed cutting teeth wherein a certain number of said cutting teeth disposed at various points along the length of the blade are splayed with an angle less than that of the main cutting teeth, such that the less splayed intermediate cutting teeth cut away the ridge that is formed laterally between the main cutting teeth, to cut a kerf with a substantially flat bottom that does not unduly resist the action of the saw. Also disclosed is a method of manufacturing the blade of the present invention by splaying alternately all the teeth by a substantially uniform angle to the central plane of the blade, machining the edges of the teeth to provide a suitable cutting edge, and then pushing back the teeth designated as intermediate auxiliary cutting teeth so that they are splayed by a smaller angle than the remaining main cutting teeth.

Abstract: A cutting tool is provided which permits renewable cutting edges containing teeth to be readily formed in field service.

Abstract: A tire trimmer tool has an elongated handle and a U-shaped frame to which a blade of undulated sheet metal is detachably mounted. The undulations comprise closely-spaced parallel ridges which extend front and rear, are open on their underside and are united by narrow connecting webs. The undulations are arranged across the full width of the blade; and the outermost undulations which comprise the two sides of the blade have upturned walls, the edge of which seat is facing slots provided the legs of the U-frame; and an adjustable clamp which connects the two legs secures the blade in place. The fore end of the blade is sharpened on its underside and a narrow transverse portion of the blade therebehind is struck or turned upwardly across the full width of the blade and limits bowing of the blade in response to tightening of the clamp.

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

Abstract: Surface protecting tape is cut away from a lens edge with an annular cutting blade after application to the lens. The blade is pressed and/or rotated into portions of the tape extending over the lens edge for cutting therethrough and freeing the lens. Knife edge serrations enhance the cutting action and blade holding means facilitates its operation.

Abstract: A multi-purpose knife has an arcuate shaped blade and a denticulate cutting surface on a curved portion of the blade. The cutting surface includes a continuous cutting edge and a pair of beveled surfaces associated with each denticle which intersect at the end of the denticle to form a second cutting edge adjacent to the continuous cutting edge. The continuous cutting edge and the cutting edge formed by the beveled surfaces all slant so as to point the denticles in a direction toward the handle.

Abstract: The instrument connected to an ultrasonic oscillations source is provided with a knife to perform longitudinal mechanical oscillations at ultrasonic frequency during tissue separation. The working portion of the knife is essentially a plate made of a titanium alloy and having a pentogonal cross-section, a smooth rounding at the end thereof and two rows of teeth of triangular and wave-like shapes for separating osseous and cartilaginous tissue, respectively. A specific dimensional geometry of the instrument knife is described.

Abstract: A slicing band consists of a base and an integral reduced cross section shank which is formed continuously throughout the length of the band. At the end of the shank is a scalloped cutting edge with inclined faces which intersect at the cutting edge of the scallops. The blade is constructed from an apparatus which utilizes two rotatable grinding wheels each with a flat annular grinding surface adapted to contact first one side of the blade and then the opposite side of the blade while the blade is yieldably retained against lateral movement and to effect material reduction to form the reduced cross section shank. The grinding wheel consists of cubic boron nitride, capable of performing material removal without burning or compromising the strength or other material requirements of the blade.

Abstract: An apparatus includes a pair of corrugated blades, each defining parallel elongated ridges running from the cutting edges thereof substantially the full length thereof. The apparatus may be positioned so that the cutting edges of the blades may be brought into contact with a tree on either side of the tree.

Abstract: A blade for a surgical saw having a handpiece, a chuck and drive means for reciprocating the chuck in an axial direction. The blade is long, relatively thin and has an integral ridge on one side thereof extending lengthwise thereof. The ridge is intermediate of and spaced from the lengthwise edges of the blade. The ridge is on one side only of the blade. A shank is secured to one end of the blade for engagement by the chuck.

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: Manual tool used for trimming mold flash and protuberances from a tire has a handle with ends which are slotted to receive mounting flanges of a undulated sheet metal blade. The blade is so folded that its undulations comprise closely spaced ridges which extend from front to rear, are open on their underside and are united by narrow intervening webs. The underside of the lead edge of the blade is sloped along an arc and/or angle providing the blade with recesses in said leading edge between the ridges. The recesses have sharp cutting edges which cut entering flash close to the tire surface, the open under side of the ridges on either side of the webs providing clearance for missed flash and trimmings so that the tool blade is not raised off the tire surface in use of the tool.

Abstract: A domestic or tradesman's knife is provided with cutting teeth ground off alternately on opposite sides to form a cutting edge on each side of the blade in the manner of the teeth of a saw, the invention consisting in the provision of cutting teeth intermediately between the two rows of cutting teeth on the sides of the blade.

Abstract: A reciprocating saw for cutting foam rubber having a blade with a pattern of no-set teeth interrupted at intervals by toothless arcuate grooves, and a guide member having a slotted, elongated, wedge-shaped section enclosing the portion of the blade rearward of the blade cutting section, and a base section connected to the slotted section for confining the material to be cut above the base and in the cutting region of the blade during the cutting operation.

Abstract: An article wrapping machine has superposed shafts geared together that mount opposed rotary crimping heads for crimping the wrapping between the articles. A knife blade is radially movable in a slot in the upper crimping head and is projected into a recess in the lower crimping head for severing the wrapping between a string of articles. The blade actuating mechanism comprises a rod axially movable in a bore in the shaft that mounts the upper crimping head. A pair of bell cranks is provided for projecting and retracting the blade. An intermediate portion of each bell crank is pivoted to the crimping head. An outer or free end portion of each crank is pivoted to the blade and the inner ends are pivoted to the rod. The bell cranks are disposed so that the pivotal connections to the blade pass "over center" and the geometry of the arrangement is such that there is virtually no axial or slicing motion of the blade during its radial movement.