Abstract: A high-speed shear with a knife, particularly a chisel-type knife with a knife edge, arranged on at least one of two oppositely arranged drums, wherein the knife can be accelerated to the feeding speed of the rolled strip and the drums can be adjusted relative to each other for carrying out a cut. At least one drive unit provided for the drums serves to accelerate the drums to the speed of the rolled strip to be cut and at least one of the drums may be provided with a separately controllable adjusting device. The chisel-type knife of the knife drum is mounted so as to protrude from the cutting circle towards the anvil or the surface portion of the second drum acting as an anvil and to mount the chisel-type knife of the knife drum so as to be resiliently supported against a predetermined restoring force.

Abstract: In an apparatus for cutting pattern pieces and creating apertures in sheet-type work material a frame has a support surface mounted thereon for carrying at least one layer of the work material. A carriage is coupled to the frame for movement back-and-forth there along a first coordinate direction in response to commands issued from a controller. A cutting head is mounted to the carriage and moves in a second coordinate direction along the carriage approximately perpendicular to the first coordinate direction. A rotary die is coupled to the cutting head and at least one cutting tool is mounted to the rotary die. The cutting tool includes a shaped cutting portion corresponding to the shape of an aperture to be formed in the work material. During operation the rotary die is movable between a working position wherein the cutting tool engages the work material and a non-working position wherein the rotary die is positioned away from the work material.

Abstract: A plug prevention device is provided in a slicing machine having a rotary impeller for carrying products such as potatoes or the like into engagement with cutting knives to form lattice cut slices, wherein the plug prevention device prevents the products from lodging within an upwardly open inlet throat of the impeller. The plug prevention device comprises an elongated stationary rod having one end projecting into the impeller throat at a position substantially off-axis relative to an axis of impeller rotation. Products entering the impeller and tending to lodge by centrifugal action against an internal wall of the impeller throat will strike the rod, causing such products to separate from wall of the impeller throat and fall further into the impeller for slice processing.

Abstract: A cut alignment device for a rotary saw having a motor which spins a cutting unit which includes a rotary shaft driven by the motor, a circular blade having a central aperture through which the shaft fits, and a blade mounting device for holding the blade on the shaft. The cut alignment device includes a battery power source carried by the cutting unit; and a beam light source, operatively connected to this power source, and carried by the cutting unit. The light source projects a light beam at a shallow angle from the cutting unit directed to intersect the plane of the rotary cutting tool or saw blade, to assist the operator in cutting accurately.

Abstract: According to the invention there is provided a sawmill, the sawmill having first and second support frame 1 and 2, first and second rails 4 and 4, a first carriage 5, a second carriage 6, height adjustment drive means, and connection means; the sawmill being formed such that when it is in use it can be arranged with the first and second support frames 1 and 2 holding the first and second rails 3 and 4 in substantially horizontal elevated parallel relationship, the first carriage 5 being associated with the rails 3 and 4 and being capable of carrying a saw 7 longitudinally along such rails, the second carriage 6 being capable of moving the saw cross-ways with respect to the rails, the drive means being associated with the first support frame and the connection means connecting the drive means with the first rail and the second end frame; the sawmill being formed such that when it is in use the drive means can move the connection means to impart a lifting force at each of two opposite end parts of the first rai

Abstract: An improved cutting head for a food product on a slicing machine including upper and lower mounting rings, a plurality of cutter support segments connected to the mounting rings, a cutting blade attached to a front edge portion of each cutter support segment, and opposed first and second pivot pins extending from upper and lower portions of the cutter support segment and through the upper and lower mounting rings. Each of the pivot pins are positioned at a location closely adjacent to a forward edge of the cutter support segment and substantially near a cutting edge of the cutting blade.

Abstract: A cutting head mounting and supporting ring assembly having an interlocking joint arrangement for mounting the cutting head on a food slicing machine. The ring assembly includes a support ring having a plurality of circumferentially spaced, radially extending flange segments having a flange end portion inclined relative to the axis thereof, and a mounting ring having a plurality of circumferentially spaced axially extending protrusions having a protrusion end portion inclined relative to the axis thereof. The flange and protrusion surfaces of the flange segments and the protrusions are complimentary shaped and arranged to mutually engage face-to-face to define scarf type joint connections when they are interdigited.

Abstract: A saw head (2) in an oscillating saw is tiltable in relation to a bottom plate (1), at which a rotatable disk (3) with a clamping device (20, 21, 22) for the workpiece W is arranged. To reach a favorable position of a saw tool (10) of the saw head (2) in relation to a workpiece W during the operation, the saw head (2) is linearly and horizontally displaceable at the bottom plate (1) such that the distance between the chucked workpiece W and the saw tool (10) is minimal.

Abstract: The invention relates to a device for cutting food products (10) having, in particular, an irregular internal structure, such as for example sausages or ham. By means of the present device, said products (10) are cut in slices (20), shaped in particular in shingled or stacked portions and evacuated from a cutting area (16). Said cutting device comprises a cutting edge, on which said products are cut, a device for evacuating the product slices (20), which is formed in particular by an endless belt (24) and at least one lighting device (34) for illuminating the cutting area (16). According to the present invention, said lighting device (34) is arranged in a half-space in front of the cutting area (16) under the cutting edge (22), such that the light passes through a gap (26) between the cutting edge (22) and the evacuation device (24). A cleaning device (50) for cleaning said lighting device (34) and/or gap (26) is also provided.

Abstract: A lumber trimming device for trimming elongate workpieces conveyed on an infeed conveyor in a laterally disposed orientation relative to an infeed direction. The lumber trimming device includes a gang of laterally spaced apart drop saws wherein the drop saws are independently actuable according to generally optimized trimming instructions from an optimizer. At least one end-trimming saw is mounted adjacent the gang. The end-trimming saw or saws is or are selectively laterally translatable according to optimized end-trimming instructions from the optimizer so as to cooperate with the gang. The end-trimming saw or saws cooperate with the optimizer and the drop saws so that a first drop saw of the drop saws is actuated simultaneously with optimized lateral positioning of a first end-trimming saw so as to trim a first workpiece of the workpieces on the infeed conveyor simultaneously by both the first drop saw in a first trim cut and the first end-trimming saw in a second trim cut.

Abstract: A table saw insert (10) includes an annular table insert portion (22) formed of machinable aluminum and a kerf insert portion (20) received in a stepped passage (44) formed in the table insert portion (22). Holding screws (56) extend through counterbored openings (54) in the kerf insert portion (20) and are threadably received in lips (46) of the table insert portion (22). Set screws (52) are threadably received in the lips (46) on diametrically opposite sides of the holding screws (56) to adjust the upper surface of the kerf insert portion (20) to be planar with the upper surface of the table insert portion (22). Ball plungers(30) are located in plunger openings (36) extending from the outer periphery of the table insert portion (22) to remove side-to-side play of the insert (10) within the table opening (12).

Abstract: An integrated circuit package separator for separating integrated circuit packages from a board includes a base, a support over the base, and a pair of pneumatic actuators including first and second lift members laterally spaced from the base and beneath respective ends of a pair of opposing ends of the support. The first and second lift members are configured to vertically displace the support and lift the support off the base by contacting the support. Individual actuators of the pair include release valves configured to equilibrate a back-pressure of the individual actuators to ambient during lifting of the support. The separator includes a cutting mechanism configured to cut the board while the board is over the upper surface of the support to separate the integrated circuit packages from one another.

Abstract: A machining apparatus comprises a rotating spindle mounted rotatably, a rotating drive source for rotationally driving the rotating spindle, a rotary tool detachably mounted on the rotating spindle, and a screwed member rotated and screwed to the rotating spindle for mounting the rotary tool on the rotating spindle. The machining apparatus is further provided with selective rotation inhibiting means for selectively inhibiting the rotation of the rotating spindle.

Abstract: A support for linear motion may be especially combined with cutting units or groups of machine tools for the continuous cutting of laminar materials such as films, paper, plastic, fabric films, and the like. The support is connected to a beam or sliding guide of the machine tools, and the support includes a shaped metal block having a first seat and a second seat. A brake is placed in the first seat, and a sliding device is housed in the second seat, with the sliding device being constituted by at least a ball monorail guidance system connected to a shaped sliding track fastened to the beam or sliding guide.

Abstract: An apparatus and process for cutting food products, in which the products are fed single-file by gravity through a cutting device comprising one or more cutting elements. The apparatus makes use of a device for contacting and positioning the products as they drop through a feed passage prior to encountering the cutting device so as to produce size-reduced products of more uniform size.

Abstract: The invention is in the field of adhesive binding of sheet-form printed materials arranged in stacks and, in particular, is directed to a method and device of the type that cuts side edges of sheet-form printed materials with tool. According to various aspects of the invention, a tool having a cutting edge and a notching element is provided as well as a method of making the tool, and a method of changing a depth of notching by changing an angle of rotation relative to a cutting plane is described.

Abstract: A method of saw cutting relatively thin walled metal tubing in a relatively burr free fashion by causing the cutter blade to move through a path of travel which maintains an essentially tangential relative motion vector between the saw teeth and the tube wall at the place of engagement during some or all of the movement of the blade center around the tube center. Both ring blade and disc-type saws are disclosed and a two axis displacement system using digitally controlled ball screw actuators is provided.

Abstract: The twist-tie dispenser has a pair of pinch wheels on its infeed side, and a cutter wheel rolling against an anvil wheel near its outlet side. A crank and a spring are used to forcefully advance the cutter wheel over about half a turn per full rotation. The cutter wheel has a cutter blade mounted therein which rolls against the anvil wheel. A continuous twist-tie stock is fed between the pinch wheels and between the cutter wheel and the anvil wheel and extends to protrude through the outlet side of the dispenser. A pulling of the twist tie material on the outlet side causes the cutter wheel to rotate and to extend the spring. As the spring pass the over-centre position, it swiftly urges the cutter wheel to severe a twist tie and to advance the end of the tie stock outside the dispenser for a subsequent cycle.

Abstract: A plug prevention device is provided in a slicing machine having a rotary impeller for carrying products such as potatoes or the like into engagement with cutting knives to form lattice cut slices, wherein the plug prevention device prevents the products from lodging within an upwardly open inlet throat of the impeller. The plug prevention device comprises an elongated stationary rod having one end projecting into the impeller throat at a position substantially off-axis relative to an axis of impeller rotation. Products entering the impeller and tending to lodge by centrifugal action against an internal wall of the impeller throat will strike the rod, causing such products to separate from wall of the impeller throat and fall further into the impeller for slice processing.

Abstract: A die that may be rotated relative to a die holder to form an opening in different types of envelopes, cardboard boxes or other type of blanks or webs is provided. The window opening in an envelope blank is formed by using a sheet of material having a top surface and an outer periphery. A raised portion extends from the top surface of the sheet and includes a cutting edge adapted to cut the envelope blank to form the opening. A coupling means are included to selectively couple the die with the die holder in at least two orientations so that the position of said sheet may be changed relative to the die holder to alter the location in which said cutting portion forms the opening in the envelope blank.

Abstract: A food processing appliance, such as a food slicing or a food dicing machine, that includes aluminum components, such as cutting discs that include knives and/or food dicing gratings, and feeders that come into contact with the food being processed, wherein the aluminum components being made in die cast aluminum. After being cast, cleaned and possibly treated, an aluminum component is tumbled so as to obtain a dense surface. The tumbled component is coated with the aid of a chemical nickel plating process, wherein the chemically applied coating has a thickness exceeding 5 &mgr;m.

Abstract: The invention relates to a cutting device for fruit and vegetables, preferably onions, and includes a cutting member (2) having intersecting knife blades (3, 4) or parallel knife blades (4) forming a grid, and a counter pad (5), against which the cutting member (2) can be pushed in the process cutting the onion (6) at issue. The counter pad (5) is constituted by a cutting-board (8) having a centrally located cutting member (2) and which via a joint in the shape of a hinge (7) is swingingly connected to the cutting-board (8) to allow the knife blade grid to carry out a swinging movement in the direction down towards the cutting edge and one onion (6) in position thereon. Within the area substantially coinciding with the area of the knife blade grid the cutting-board (8) exhibits a plurality of projections (9) supporting the onion (6) and intended to penetrate the openings or cavities (10) of the knife blade grid when the cutting member (2) is in a completely down-tilted position above the cutting-board (8).

Abstract: A rotating cutting apparatus comprising a cutting blade holder with at least one hole on the outside diameter of the cutting blade holder into which cutting blades are inserted and bonded to the cutting blade holder. The cutting blade holder encloses a center hole, so that the rotating cutting apparatus can be mounted to a drive shaft of machinery or secured to a cup that can be mounted to the drive shaft of machinery and driven by the machinery. The cutting blade holder can be made of a less expensive material, with only the cutting blade being made of higher-grade materials that maintains its cutting edge well. Additionally, in some arrangements of the present invention, the cutting blade may be sharpened on two sides so that the rotating cutting apparatus can be used for longer periods of time.

Abstract: A disc saw felling head has a replaceable lower blade housing and an optional replaceable wear liner in the housing.

Abstract: A polymer cutter with a rotary cutting head in which the cutting edges are on the circumferential periphery of the head is described. The knife blades on the rotary head have a knife angle (as defined) of about 40° to about 60°. The apparatus is especially useful for cutting hard and/or brittle thermoplastics and may be used for preparing polymer granules or pellets.

Abstract: Disclosed a rotary apparatus for severing a web material, particularly the so called “hard-to-cut materials” such as polymers with relatively high elongation and/or high energy required for failure, including polypropylene (PP), NYLON, polyethylene terephthalate (PET), and any combination thereof, provided in a film form or in a non-woven form. The rotary apparatus can include one or more severing tools such as dies and flex blades. The rotary apparatus provides a speed ratio between the linear velocities of the anvil surface and the severing edge of the severing tool.

Abstract: The invention falls within the field of labeling machine with the continuous introduction of a reeled label film. In particular, it relates to the cutting roller of the label film and it comprises a cooling line for the two support systems of the shaft of the cutting roller. The cooling line is preferably independent for each of the two systems and it comprises a probe for measuring the temperature of the related support which sends its measured value to a block for its comparison with a pre-set preferential temperature value. The block, according to the compared value, activates a solenoid valve inserted on the compressed air supply circuit.

Abstract: A rotating cutting apparatus comprising a cutting blade holder with at least one hole on the outside diameter of the cutting blade holder into which cutting blades are inserted and bonded to the cutting blade holder. The cutting blade holder encloses a center hole, so that the rotating cutting apparatus can be mounted to a drive shaft of machinery or secured to a cup that can be mounted to the drive shaft of machinery and driven by the machinery. The cutting blade holder can be made of a less expensive material, with only the cutting blade being made of higher-grade materials that maintains its cutting edge well. Additionally, in some arrangements of the present invention, the cutting blade may be sharpened on two sides so that the rotating cutting apparatus can be used for longer periods of time.

Abstract: Cubic boron nitride tooling, e.g. for woodworking, is fabricated with the same geometries and machinery as is used for fabricating conventional carbide tooling.

Abstract: A cutting device is incorporated in a packaging machine having at least one expansion cylinder consisting of upper and lower sections with a gap therebetween. The cutting device includes a rotation ring concentrically surrounding and spaced from the expansion ring. The rotation ring is coupled to a driving system for concentric rotation with respect to the expansion cylinder. A number of cutting members are pivoted to the ring. Each cutting member includes a cutting blade and a weight on opposite sides of the pivot thereof. A spring is connected between the weight and the rotation ring for biasing the cutting blade to a stowed position where a sharp edge of the cutting blade is spaced from the gap. When the rotation ring is rotated at a high speed, a centrifugal force acts upon each weight thereby moving the cutting member against the spring toward a cutting position where the sharp edge of the cutting blade partially extends into the gap for cutting off a packaging material fit over the expansion cylinder.

Abstract: The present invention overcomes many of the shortcomings inherent in previous methods and systems addressing the commercial production of fried plantain slices. The improved process comprises a fully automated system which includes a sprayer assembly adapted to continually spray the cutting knife mechanism on commercial-grade slicing machines with a cleansing lubricant thereby keeping the cutting surface clean and free of debris. The improved system also includes a liquid bath for coating the freshly sliced plantains prior to immersion in a hot oil frying vat. In one embodiment, the system utilizes an edible oil as both the cleansing spray lubricant and in the liquid bath. In this embodiment, the liquid bath serves as a reservoir for the cleansing lubricant sprayer assembly. In another embodiment, the system utilizes water as both the cleansing spray lubricant and in the liquid bath.

Abstract: The present invention relates to a single shaft rotary grinder with an improved cutter and combination “comb” rotor and counter knife configuration for reducing film, fibrous material and other material which has a tendency to wrap around the rotor, rubber, solid plastics and wood. Reducing this type of material, such as plastic film, into small pieces has been problematic. This invention provides one or more comb shaped counter knives and a rotor having a plurality of geometrically shaped cutters mounted in a plurality of partial or full rows longitudinally along the rotor. The comb shaped counter knives and the rows of cutters work in cooperation to reduce film and other material into small pieces.

Abstract: A hand held rotary blade saw with a motor, rotary saw blade, driving connection between the motor and the blade, two pivotable forward blade guards with top and bottom hand manipulable pivot members for exposing either a left or right blade sector for cutting, or an upward or downward blade sector when the blade is vertically oriented by twisting the wrist. The switch is operable by the thumb or the finger, such that left and right handed users have operational parity regardless of blade orientation, which hand is holding the saw, or whether the thumb or finger is operating the switch. Parallel receding blade guard edges form a forward notch enabling forward cutting. The blade is interchangeable and a carrying case, belt holster attachment, and special battery charger are provided. The battery charger charges the battery while the battery is in the saw or when it is removed.

Abstract: A straw application machine for automatically applying drinking straws, wrapped in protective cover, to beverage containers at very high speeds. The machine comprises a guide roller which presses each straw of a web of parallel straws into a slotted straw drum. A blade cutting drum separates the straws as it rotates in close association and synchronization with the slotted straw drum. A strip of sticky tape runs along the back of the web of parallel straws and a protective cover is removed from the tape exposing an adhesive prior to passing underneath the right side of the guide roller. After the straws are cut from the web, an ejector bar applies each straw to a beverage package where it is retained by the adhesive tape or glue. Multiple servo motors control the operating speed of the machine. Alternate embodiments for the slotted straw drum include a drum center having rubber ends with slots for holding a larger straw, and a drum center having end plates with inserts for holding straws.

Abstract: An indexable cutting insert for use in a milling cutter. The cutting insert having four identical side surfaces extending between generally square shaped top and bottom surfaces with two diametrically opposite protuberances extending away from each other in a top or bottom view of the cutting insert. The cutting insert has eight identical major and minor cutting edges. The milling cutter having the general form of a circular disk with a plurality of the cutting inserts releasably mounted in insert pockets angularly around the periphery of the cutter. The cutting inserts are arranged to produce a profile on a workpiece having a central straight section and two beveled sections on either side of the central straight section.

Abstract: The rotating cutter head for working the surface of elastomers which comprises indexable inserts or annular cutting tools has said indexable inserts or annular cutting tools provided on the periphery of a disk having a diameter of from 200 to 800 mm, said disk being capable of rotating with up to 5000 revolutions per minute, enabling cutting speeds of from 10 to 100 m/s, preferably from 20 to 60 m/s. At least 6, preferably from 10 to 30, cutting tools are provided on the periphery of said disk.

Abstract: A saw having a rotating blade and a laser beam alignment system, a rotating, multi-sided member having reflecting surfaces formed on each edge being mounted to one side of the rotating saw blade. A laser device is positioned in front of the blade guard with a mounting bracket, the beam generated thereby being reflected by the multi-sided member onto a work piece. The laser beam provides a visual cutting line to enable the saw operator to align the work piece accurately.

Abstract: The application relates to a device for quickly and precisely aligning and fixing foil blades on the body part of a blade roll. The rotary blade roll has a rotating shaft, at least one roll body part arranged with torsional strength on the rotating shaft, at least one foil blade supported by the roll body part, and a row of holding and positioning pins in the roll body part. Magnetic elements arranged in rows retain the foil blade flatly on the peripheral surface of the roll body part. The foil blade has a thin flexible magnetically permeable base plate and at least one sharp one-piece cutting edge of a predetermined cutting shape projecting from the base plate. The base plate has a leading edge, a trailing edge, two side edges opposing each other, and, in a front zone adjoining the leading edge, a plurality of slots aligned with the cutting edge.

Abstract: A bale processor for cutting or dicing a bale or slab of unvulcanized rubber produces small cubes or blocks of a predetermined size and uniform shape for continuous feeding at a predetermined rate into a mixing machine or blender. A bale or slab of feedstock rubber is advanced incrementally along a slider platform and a segment is sliced from the leading end of the bale. After separation, the segment falls onto a receiving panel from which it is transferred by a vacuum pick-up head to a vacuum hold-down table. Multiple slices are then formed through the segment along the X-axis by circular cutting blades of an X-axis cutter head, thereby forming elongated segment strips. Next, multiple slices are formed through the segment strips in the Y-direction by a Y-axis cutter head which includes circular cutter blades that are extendable and retractable along the Y-axis.

Abstract: A die apparatus for supporting and retaining rotary dies in operation having a base, a cover supported by a plurality of columns, a cross member moveable along the columns and modular die supports rollingly engaged with the rotary dies. A method of installing and removing the rotary dies from the apparatus includes moving the dies along a first axis of movement within the apparatus through use of a support strap and moving the dies to and from the apparatus through use of a conveyor.

Abstract: Cubic boron nitride tooling, e.g. for woodworking, is fabricated with the same geometries and machinery as is used for fabricating conventional carbide tooling.

Abstract: In the field of clearance of unexploded ordnance from land, there is a need for an improved apparatus for removing unexploded ordnance from the ground. A cutting apparatus includes a plurality of blades on a rotatable shaft, the blades being tapered towards their distal ends. When the blades are driven forwardly through soil while the shaft rotates, they tend to loosen items such as solid ordnance and bring such items to the soil surface. The blades simultaneously sever scissile matter in the soil, thereby facilitating removal of the ordnance. The cutting assembly includes a conveyor for conveying unexploded ordnance away from the soil. The cutting assembly may be mounted on a vehicle including further means for rendering harmless the unexploded ordnance.

Abstract: An improved cutter set for heat shrink film sleeve labeling machine mainly includes a cutter adjustment block which has a plurality of screw bores formed at the bottom side thereof and two opposite troughs formed at a lower section in a stepwise manner for fastening respectively a cutter therein. Each cutter set has two sets of cutter thereby may shorten cutting displacement and perform cutting of the shrink film sleeve synchronously for producing an even and neat slit opening at a fast speed steadily. Changing of the cutter may be done conveniently and rapidly by loosening various screws.

Abstract: The invention relates to a blade holder for a device for dividing a material web (10) in longitudinal direction, said blade holder comprising a basic body (2) that can be secured on a cutter bar (M) of the device. The blade holder further comprises a blade carrier (3; 23), which can be moved relative to the basic body (2) and on which a circular blade (8; 22) is positioned rotating and which is connected to an adjustment drive (4; 24) for moving the circular blade (8; 22) from the idle position to an operating position where it is pushed against an associated rotating counter blade (9; 28) of the device. In addition, the blade holder is provided with an impact absorber (11) that is effective between the adjustment drive (4; 24) and the circular blade (8; 22) and has a high compliance to a force effective in press-on direction and a low compliance to a force effective counter to the press-on direction.

Abstract: An improved impeller for use in a rotary food slicing machine comprising a rear base plate and at least one forward ring secured in axial spaced parallel relation relative to the rear base plate and a plurality of circumferentially spaced planar paddles spanning the base plate and the forward ring. The paddles are each oriented to extend at an angle relative to the radius of the rear base plate and the at least one forward ring. Moreover, the end of each paddle located adjacent to the rear base plate is arranged in a partially trailing relationship relative to the end of the paddle located adjacent the at least one forward ring with respect to the intended direction of rotation of the impeller.

Abstract: A rotating cutting apparatus comprising a cutting blade holder with at least one hole on the outside diameter of the cutting blade holder into which cutting blades are inserted and bonded to the cutting blade holder. The cutting blade holder encloses a center hole, so that the rotating cutting apparatus can be mounted to a drive shaft of machinery or secured to a cup that can be mounted to the drive shaft of machinery and driven by the machinery. The cutting blade holder can be made of a less expensive material, with only the cutting blade being made of higher-grade materials that maintains its cutting edge well. Additionally, in some arrangements of the present invention, the cutting blade may be sharpened on two sides so that the rotating cutting apparatus can be used for longer periods of time.

Abstract: Circular tool (10) for cutting rolls of paper and similar, the tool (10) including a central axial hole (11), two lateral surfaces (10a) and an outer cutting edge (12) defined by two chamfers or bevels (13a, 13b) inclined at respective angles “&agr;,&bgr;” with respect to the lateral surfaces (10a), one chamfer (13a) defining a cutting side of the tool (10) and the other chamfer (13b) defining a side not directly involved in the cutting action of the tool (10), the tool (10) being able to be associated by means of the central hole (11) with a rotation shaft, the lateral surfaces (10a) having a thickness “s” of between 2 and 4 mm and being parallel to each other, the surface defined by the chamfer (13b) not directly involved in the cutting action being covered with a protective layer (14) of material of great hardness.

Abstract: A device for cross cutting material webs includes a cutting-cylinder pair formed of mutually cooperating cylinders having respective cylinder cores and circumferential surfaces formed by exchangeable circumferential elements, the circumferential elements being arranged removably around the respective cylinder cores of the cylinders.

Abstract: A polymer cutter with a rotary cutting head in which the cutting edges are on the circumferential periphery of the head is described. The knife blades on the rotary head have a knife angle (as defined) of about 40° to about 60°. The apparatus is especially useful for cutting hard and/or brittle thermoplastics and may be used for preparing polymer granules or pellets.

Abstract: A high-speed shear with a knife, particularly a chisel-type knife with a knife edge, arranged on at least one of two oppositely arranged drums, wherein the knife can be accelerated to the feeding speed of the rolled strip and the drums can be adjusted relative to each other for carrying out a cut. At least one drive unit provided for the drums serves to accelerate the drums to the speed of the rolled strip to be cut and at least one of the drums may be provided with a separately controllable adjusting device. The chisel-type knife of the knife drum is mounted so as to protrude from the cutting circle towards the anvil or the surface portion of the second drum acting as an anvil and to mount the chisel-type knife of the knife drum so as to be resiliently supported against a predetermined restoring force.