Abstract: A knife holder (5) for a microtome for cutting samples (4a) is disclosed. The knife holder (5) encompasses several knives (2a, 2b) each of which defines a cutting edge (16). The knife holder (5) is arranged pivotably about a shaft (18); and the shaft (18) is arranged substantially perpendicularly to each cutting edge (16) of the knives (2a, 2b).

Abstract: A paper cutter includes a base with a rail secured thereon, a slide unit, a cutter seat and at least two blades. The base is provided with the rail for the slide unit to slide thereon. The cutter seat is pivotally connected to the slide unit. The cutter seat is provided with the blades. The slide unit further comprises a one-way locking member therein. The cutter seat comprises locking edges corresponding to the locking member for one-way engagement of the locking member with one of the locking edges. The cutter seat is positioned with respect to the slide unit. By turning the cutter seat towards a reversed direction, the blades are exchangeable. The one-way locking member is a pawl. The pawl is urged by an elastic member towards one-way direction to engage with the locking edge.

Abstract: A gasket cutter with changeable and reversible dies and punches including a body having upper and lower opposed arm members, a cylindrical member slidingly engaged within said upper arm member to be raised and lowered by rotation of a handle attached to the cylindrical member, and a platen releasably secured to the lower arm member. A cylindrical punch and a ring die surrounding the punch are attached to the platen. The ring die includes a first and second inner diameter at first and second ends thereof creating with said punch a first and second gap, respectively. A reversible punch die having first and second opposed cutting edges is releasably attached to the cylindrical member so that the first or second cutting edge of the punch die descends into the first or second gap, thereby cutting a ring gasket of a desired size from a sheet of gasket material.

Abstract: A wire chopper module for processing spent electrode emerging from an EDM system employs replaceable inserts that are also movable relative to the feed path of the electrode. Shifting the position of the inserts relative to the feed path of the electrode allows more than one portion of each cutting edge on the insert to be used. Each insert has more than one cutting edge and can be rotated and re-inserted to present a completely new cutting edge. Removable multi-edge inserts that are repositionable relative to the feed path of the spent electrode permit renewal of the cutting edges of the wire chopper module with increased frequency and reduced cost. The wire chopper module also incorporates a flywheel to increase the movement of inertia of the rotating cutting inserts as an aid in overcoming jams. Sharp cutting edges and increased rotational momentum improve the reliability of the inventive wire chopper module.

Abstract: A tool is provided for notching an end of a pipe. A punch is provided with a first cutting edge opposite a second cutting edge. The punch is coupled to a punch holder which is configured to move vertically relative to a collar supported upon a base. A pipe support provides a preferred form of die to hold the pipe adjacent the punch. The pipe support includes a first edge, second edge, third edge and fourth edge which can be selectively presented for supporting the end of the pipe adjacent the punch. The first cutting edge and second cutting edge of the punch can be selectively provided for cutting the notch in the pipe. The punch and pipe support are preferably both re-orientable to select various different edges for supporting and cutting the pipe.

Abstract: The combination of a base, with which at least one sheet layer can be operatively supported to be cut, a guide assembly, and a cutting blade assembly. The cutting blade assembly includes first and second cutting blades. The cutting blade assembly is selectively changeable between a) a first state wherein the first cutting blade is in a first operative position and the second cutting blade is in a first inactive position, and b) a second state wherein the second cutting blade is in a second operative position and the first cutting blade is in a second inactive position. The cutting blade assembly cooperates with the guide assembly to be movable guidingly in a cutting path.

Abstract: The present invention relates to a punch (30) and punch assembly (2) for use in a tool (1) for joining ductile materials, such as metal sheets (7,8), in a lance joint or a clinch joint. The punch (30) has a punch body (31) formed around a punch axis (5). Two punch tips (34,34?) extend in opposite directions from the punch body (31) along the punch axis (5). The punch body has one or more load engagement features (41,41?) by which a punch force for joining the ductile materials (7,8) is imparted to the punch body (31).

Abstract: A wire chopper module for processing spent electrode emerging from an EDM system employs replaceable inserts that are also movable relative to the feed path of the electrode. Shifting the position of the inserts relative to the feed path of the electrode allows more than one portion of each cutting edge on the insert to be used. Each insert has more than one cutting edge and can be rotated and re-inserted to present a completely new cutting edge. Removable multi-edge inserts that are repositionable relative to the feed path of the spent electrode permit renewal of the cutting edges of the wire chopper module with increased frequency and reduced cost. The wire chopper module also incorporates a flywheel to increase the moment of inertia of the rotating cutting inserts as an aid in overcoming jams. Sharp cutting edges and increased rotational momentum improve the reliability of the inventive wire chopper module.

Abstract: The invention relates to a knife holder for a microtome having a knife receiver for fixing and positioning a knife and a knife for the knife holder. The knife holder is ergonomic, the operation is made easier and safer, and the knife does not need to be changed as often. To this end, the knife receiver is constructed to accommodate a disk-shaped knife. The knife is given the shape of a regular polygon, whereby the edges are cutters. The knife receiver has an axle on which the knife can rotate such that the cutters can be positioned for cutting an object.

Abstract: A cutting mechanism for use with a strapping tool includes a cutter having a polygonal cross-sectional configuration, a plurality of cutting surfaces defining a pair of elongate cutting edges, and a plurality of retaining recessed. The cutting edges are an in-use edge and a spare edge. The cutter is engaged with a movable die holder having a support surface for the cutting body. The holder includes a slot defining a plurality of projections. The projections are configured so that the retaining recesses of the cutter fit within the support surface slot. The cutter is reversible on the die holder such that the in-use and spare cutting edges are interchangeable by rotation of the cutter.

Abstract: A saw tooth of generally parallelopiped shape having top and bottom surfaces, side surfaces and front and back surfaces. Each front and back surface has cutting edges at its top and bottom sides. The cutting edges on each surface are parallel to each other and are also parallel to the cutting edges on the other surface.

Abstract: The invention is for a knife indexing apparatus for a non-rotating core cutting knife and a means for automatically indexing the knife during core cutting operations. The apparatus employs the discovery that by indexing the knife in the direction of rotation of the core, at least one additional fresh cutting edge can be presented to the work than would be the case if the knife were rotated in the direction opposite to the direction of rotation of the core to be cut.

Abstract: The present invention relates to a joiner for lance joining ductile materials, such as metal sheets, and in particular to a joiner including a die assembly and a punch assembly. The die assembly includes a die anvil and an anvil surface. There are at least two die blades around the anvil, the blades extending in a longitudinal direction, generally above and below opposite sides of the anvil surface to form a die aperture for the punch. Each blade is arranged to move away from the anvil to open up the aperture when ductile material is forced in the longitudinal direction into the aperture and against the anvil by the punch. Each blade has a cutting edge above the anvil facing towards the die aperture for cutting through the ductile material to make a lance joint when the material is forced into the aperture. The assembly also has at least one biasing means by which the blades are biased towards the anvil to constrict the aperture.

Abstract: A device for cutting a fiber cable, in which a rotationally driven cutter supporting member and a rotatable pressing ring positioned at an incline relative to the cutter supporting member work together to cut the fiber cable. An annular channel formed on the outer circumference of the cutter supporting member is penetrated by a plurality of radially oriented cutting blades. The cutting blades are held in a cutter receiving member of a holding device, wherein a supporting ring radially supports the cutting blades. The width of the cutting blades is larger than the width of the annular channel. In order to consecutively use several areas of the cutting blades, the supporting ring is replaceable and is formed by an outer ring encircling the cutting blades or by an inner ring encircling the cutting blades. The cutting blades are held in the cutter receiving member and are radially moveable.

Abstract: A cutting device for cutting elongate flat-walled tubular stock into preselected lengths which cutting device includes opposed circular cutting blades that are laterally movable to effect a transverse cut across the tubing. The cutting blades are rotatably mounted and engaged with a locking assembly to prevent rotation thereof. Each cutting blade includes a peripheral cutting edge incrementally defining a plurality of contact portions with one contact portion being disposed in an active cutting position and the remainder of the contact portions being disposed in inactive standby positions. Each cutting portion has an arcuate shape so as to minimize the vertical components of the cutting force being applied thereby as the depth of the cut approaches an interior surface of the tubing.

Abstract: A cutter implement, for use within a cutting tool in connection with the securing of a tensioned steel strap about a package wherein a pair of vertically overlapped end portions of the tensioned steel strap are supported upon an anvil, is provided with a non-cutting recessed portion or notched region at a substantially central portion of its cutting edge such that if the cutting assembly of the cutting tool experiences overtravel movements with respect to the anvil and the pair of vertically overlapped end portions of the tensioned steel strap supported thereon, while the upper one of the pair of vertically overlapped end portions of the tensioned steel strap will be severed by the cutter implement, and while the upper surface of the lower one of the pair of vertically overlapped end portions of the tensioned steel strap may be scored by the cutting edge of the cutter implement, that portion of the lower one of the pair of vertically overlapped end portions of the tensioned steel strap which is engaged by or

Abstract: Knives (28, 30, 122) are held in tangential, resilient (106, 108) or fixed (132, 136) contact with a surface of an air bar (12-20) or air table (142); so that a web (26) moving on a cushion of air (46) over the air bar or table is cleanly slit into webs (32, 34, 36) of smaller width.

Abstract: The present invention is directed to a knife assembly which is used to cut a rotating tube, such as a paper or plastic tube. The circular knife remains stationary during the cutting. After a number of cuts, the knife becomes dull. The present knife assembly rotates the circular blade or knife through a predetermined angle which results in an incremental movement of the circumference or cutting edge of the knife. A shaft has a first end which mounts the circular knife and a second end connected to a one-way clutch. An arm extends from the one-way clutch. Movement of the arm in a first direction rotates the shaft and moves the cutting surface of the knife. The arm is returned in an opposite direction. During this return arm movement the shaft and knife remain stationary. The assembly is then ready for the next cycle.

Abstract: A cutter assembly for food film includes a rigid planar base with a movable metal strip anvil movably positioned thereon. A slidable cutter arm for forward or rearward movement is attached to a rear axle affixed to the base. The assembly, in one embodiment, can be positioned atop a conventional box of rolled food film. Safe, manual cutting of the food film to convenient lengths can be easily accomplished with minimal training and effort. A turret blade allows for convenient blade changing when dulling occurs.

Abstract: The invention relates to a mold apparatus and a process for forming a lid latching mechanism in a thermoplastic container. The lid latching mechanism features a large, trapezoidally-shaped opening hole. The trapezoidal shape has been found to reduce the amount of tearing that can occur along the edges of an opening formed during the thermoforming process. The opening is created by the engagement between a fixed shear key mounted in a first mold member and a movable shear key which has a trapezoidally-shaped cutting surface and is mounted in a second mold member. The movable key travels along an inclined path as the mold members close on a preheated thermoplastic sheet to form a container.

Abstract: The invention refers to a cutting strip with a cutting edge of highly wear-resistant material, e.g., polycrystalline diamond material, that is laid in solid connection on a base and forms a rail piece together with this base, whereby several rail pieces are laid in series along a holder that is made of wear-resistant material, e.g., hard metal, and has an essentially rectangular cross-section. The holder is provided, along two adjacent edges each with a groove protruding diagonally into the holder, with essentially parallel faces into which the rail pieces are inserted in such a way that the faces of the two grooves reach to the cutting edge of the rail pieces, whereby the faces situated between the two grooves are formed by a clamping piece that can be screwed onto the holder and that collectively clamps against the holder all rail pieces held in the two grooves.

Abstract: A method of cutting an elongated multi-ply flat surfaced ribbon of web material which includes advancing the ribbon along a linear path while rotating a pair of cantilever-mounted drums on opposite sides of the path to flank the ribbon flat surfaces, the drums each having a plurality of axially extending slots in the periphery thereof. A saw blade is adjacent the path and orbits through the path so as to have the blade orbit intersect the drum slot orbits to transversely cut the ribbon while the saw is advancing parallel to the linear path.

Abstract: The invention relates to a terminal carrier chipper for chipping a terminal carrier that couples a plurality of terminals in concatenation during the process of fabricating a wire harness used in electrical circuits. The object of the invention is to provide a terminal carrier chipper in simple structure, which is less vibrating and noisy and whose blade section exhibits an improved durability. The terminal carrier chipper according to the present invention includes: a fixed blade 3; a moving blade lever 9; and a rotating cam 5. The moving blade lever 9 is oscillated around a support shaft 10 by rotating the cam 5 while causing a projection 5a of the cam 5 to come in contact with a cam guide 11 arranged on the moving blade lever, so that a blade edge 9c of the moving blade lever nears and leaves a blade edge 3a of the fixed blade 3 to thereby chip a terminal carrier T.

Abstract: A cutting mechanism is disclosed, which is useful in a strapping tool of the type used to apply a steel strap in a tensioned loop around a package by means of a series of interlocking joints comprising interlockable shoulders punched into overlapped ends of the strap. The cutting mechanism comprises an anvil arranged to support the overlapped ends of such a strap, a cutter holder movable toward and away from the anvil, an elongate cutter removably mounted within to the holder so as to extend crosswise in relation to the overlapped ends such a strap when the overlapped ends of such a strap are supported by the anvil. The cutter is movable conjointly with the holder, toward and away from the anvil. The cutter has a polygonal profile defining plural, elongate, parallel cutting edges, one of which projects toward the anvil when the cutter is mounted within the holder.

Abstract: A device for dispensing a bandage material has a container for accommodating a supply of bandage material, a mechanism for advancing the bandage material from the container so as to expose a desired portion of the bandage material outside of the container, a mechanism for cutting the exposed piece of the bandage material, and including a cutting element movable between an initial position before cutting the piece of the bandage material and a final position after the piece of the bandage material has been cut off during which movement from the initial position to the final position the piece of the bandage material is being cut, and a structure for preventing advancement of the bandage material by the advancing mechanism when the cutting element is in the final position.

Abstract: A method and apparatus for cutting tissue sections from an organic tissue specimen to generate multiple tissue ribbons having any desired section sequencing. A three-dimensional microtome which allows relative movement between the tissue specimen and the cutting blade in three dimensions is used to generate the tissue ribbons. Preferably, the three-dimensional microtome also includes an advanceable cutting blade capable of being conveniently advanced in the direction along its length to provide a fresh cutting edge to the cutting area of the microtome.

Abstract: An improved lead frame cutting apparatus for integrated circuit packages therefor is disclosed. This apparatus employs symmetrical punches that have multiple cutting edges, and can therefore be positioned to a new cutting edge rather than replacing the punch. These symmetrical punches are used in conjunction with a thin cutting plate, which is also symmetrical, allowing both sides to be used. This thin cutting plate is fabricated using an inexpensive cutting process wherein multiple cutting plates are formed in one operation which saves time and money compared to the machined cutting plate of the prior art. Two versions of the symmetrical punch are disclosed. One version has four cutting surfaces and is used to remove the dam bars on the lead frame of the integrated circuit package. The second version has two cutting surfaces and is used to cut the leads on the lead frame to the proper length.

Abstract: A machine for cutting tires into a plurality of elongated strips includes parallel cutting shafts having a plurality of cutting wheels mounted for rotation therewith. The cutting wheels are separated by annular spacers on the cutting shafts. A spacer comber partially encircles each annular spacer and has a lower portion having a rounded surface to minimize surface contact between the elongated strips and the spacer comber. After the side cutting edges of each cutting wheel becomes worn, the cutting wheels can be sharpened by surface grinding which narrows the cutting wheel. Each annular spacer and spacer comber are also narrowed by respective corresponding surface grinding of the side surfaces thereof. The machine is overhauled, after the surface grinding and the corresponding surface grinding, by the addition of at least one of each cutting wheel, annular spacer and spacer comber on each cutting shaft.

Abstract: A method and apparatus for the precision cutting of corrugated paperboard panels into rectangular test specimens, having shapes of predetermined size. A reference rod is inserted through a selected flute in the corrugated paperboard panel, prior to the first cutting operation on the raw panel. The reference rod is then placed in a specific location on the cutting table surface, so that the internal flutes in the raw panel are oriented at a specific angle to the cutting plane of the cutter mechanism. This ensures that the first edge formed on the raw panel has a precise orientation relative to the panel flutes, such that the final precision cut panel specimen can be used as a test specimen for performing edge compression tests, and other tests, that are reproducible, and representative of the characteristics of the corrugated paperboard panel structure.

Abstract: A cut and score die apparatus is provided for progressively converting a sheet of material into blanks. The apparatus includes a punching section for punching scrap material from the sheet of material to define an array of interconnected blanks arranged in a grid of rows and columns on the sheet of material. A scoring section is provided for simultaneously scoring a first predetermined pattern on a trailing portion of a first row of blanks and a second predetermined pattern on the leading portion of a second, succeeding row of blanks on the sheet of material. A blanking section is also provided for piercing the sheet of material in a predetermined pattern to cut blanks from the sheet of material without producing any additional scrap material.

Abstract: A cutting device for layered or unlayered foil lengths, having good cut quality and an extended period of use before re-grinding of the cutter is required, consists of cylindrically shaped keyway cutter bars with distance rings lying between them, which are mounted on a blade shaft, and of roller blades of right-angles cross-section, which are equally mounted on a blade shaft and wherein each roller blade is pressed by a spring washer against the corresponding keyway cutter bar. The advantage according to the invention consists in that first each roller blade is supported on one of the cutting blades of the keyway cutter bar and that after these cutting shoulders wear off the whole roller blade shaft is turned around and in each case the other cutting shoulder is used for cutting. After these cutting shoulders too have worn off the cutting device is made usuable for further cutting operation by grinding off the cylindrical outer surface of the keyway cutter bars (FIG. 2).

Abstract: A scissors action shearing machine for sectioning reinforcing rod is equipped with replaceable, hardened steel shear blocks affixed to each scissors mounting blade with each such block and blade pierced to provide a communicating aperture through the entire structure for enabling reinforcing rod to be inserted therethrough whereupon one blade with affixed shear block is rotatively biased with respect to the other to section the rod.

Abstract: A cutter for optical fibers includes upper and lower frames pivotally connected at their ends pivotally movably relative to each other, a cutting blade provided on the upper frame for cutting optical fibers and supporting device provided on the lower frame for supporting an optical fiber to be cut. The upper frame includes a regulating device for moving the cutting blade in its longitudinal direction and stopping and fixing the cutting blade and a confirming device for visibly confirming a position where the cutting blade is fixed. With this arrangement, there is no need for exchanging of cutting blades every cutting of a fiber. Moreover, a cutting blade portion to be used can be visibly identified and it can be prevented to use again once used cutting edge portion of the cutting blade.

Abstract: Die assembly comprises a die plate having one or more die inserts therein. The die plate has a recess within which the insert is positioned. The die opening in the insert extends normally of the oppositely directed major surfaces of the insert so that the insert can be reversed. The original obverse surface of the insert thus becomes the reverse surface and the original reverse surface becomes the obverse surface. The necessity of sharpening the die insert in the conventional manner is thus eliminated. Also disclosed is an improved system for mounting die inserts in a die assembly.

Abstract: A drum cutter for paper cutting operations has a series of bar-like cutter inserts at angularly spaced positions around its periphery. The inserts are indexable and are held by clamping elements that engage them at points spaced from their ends to draw them radially inwards against bearing faces on the cutter drum or on support members which are themselves detachably mounted on the drum. The clamping elements are tightened by screws extending axially into each end of the drum. The inserts are clamped against bearing surfaces which are at a smaller radius in a region between the clamping elements than they are in end regions beyond the clamping means, so as to give the operative cutting edge a concave profile.

Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positionally locating the punch and die templets one to the other. The punch and die assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.

Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positionally locating the punch and die templets one to the other. The punch and die assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.

Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positionally locating the punch and die templets one to the other. The punch and die assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.

Abstract: A punch and die system is disclosed as comprising punch and die templets serving to positionally locate punch and die assemblies relative thereto solely adjacent the region at which punching of a workpiece occurs in combination with guide assemblies for positonally locating the punch and die templets one to the other. The punch and die assemblies are designed to utilize interchangeable punch guide and die members and in a preferred construction a punch element is removably attached to its associated driver and shaped to permit opposite ends thereof to be employed in the punching operation. One or more punch elements may be loosely attached to their associated drivers.

Abstract: An improved machining device is disclosed which is particularly well suited for machining of a wide variety of materials and in particular elastomeric materials such as for example synthetic rubber employed in manufacture of motor vehicle tires. The machining device comprises a rotatable wheel having secured around the periphery in spaced relationship a plurality of replaceable cutting inserts each of which incorporates piercing corner portions having an acute included angle followed by a sharp linear edge portion operable to produce a clean severing action which results in a finely textured machined surface. Each of the inserts also incorporates a securing arrangement which allows the cutter inserts to be quickly and easily secured to the wheel and also accurately locates the cutting edges thereof along a common circle concentric with the axis of rotation of the wheel. Various arrangements are also disclosed for preventing rotational movement of the cutter insert during use thereof.