Abstract: A cutting unit is described that contains a pair of cylinders disposed opposite one another with a gap formed there-between for receiving a ribbon. The pair of cylinders include a first cutting cylinder having a periphery with a cutting knife disposed helically about the periphery and a second cylinder. A drive rotates the first cutting cylinder for cutting the ribbon such that a signature cut from the ribbon has a smooth, straight edge.

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: A pad forming process forms a stack of sheets, each sheet bearing adhesive on at least a portion of one side thereof. A sheet cutting die is provided having sheet collection cavity therein. A web comprising a linerless elongated sheeting having one side at least partially covered with an adhesive is advanced past the die. The die cuts the web to form a first cut sheet which is retained within the sheet collection cavity of the die. The web continues to advance past the die. The die then cuts the web to form a second cut sheet from the web which is retained within the sheet collection cavity of the die, wherein the second cut sheet adheres to the first cut sheet within the sheet collection cavity to form a stack of sheets.

Abstract: To produce at least one perforation in a non-woven sheet (N) of fibers or filaments, the sheet (N) is brought into contact with a perforated cylinder (2), equipped with at least one insert (8). Each insert includes, at one end, a plane surface (S), and is provided with a recess (8b) which emerges in the plane surface (S), and which has a sharp edge (8g) formed by the intersection of the inner surface (8f) of the recess (8b) with the plane surface (S). A perforation in the non-woven sheet (N) is obtained by cutting out a portion (P) of the non-woven sheet (N) by shearing of the fibers or filaments of the non-woven sheet (N), between the sharp edge (8g) of the insert (8) and a perforating member (9) driven simultaneously in translation and in rotation about its own axis.

Abstract: A method and apparatus for continuous, high-speed production of punched strip having an array of high-tolerance closely-spaced holes with positive ejection of waste punch-out material. A first pair of opposed rotary dies, one a female die and the other a male/female die, punches a first set of holes in a strip fed continuously between the dies, and a second pair of opposed rotary dies, one the male/female die and the other a male die, punches a second set of holes in the strip between the first set of holes, the strip being wrapped about the common male/female die during punching of the first and second sets of holes to continuously index the strip with the two opposed pairs of rotary dies to ensure production of the high-tolerance closely-spaced holes.

Abstract: A closed-loop system can maintain a pre-set cut length of a material as the material is cut and placed on a web. The system has the ability to measure the actual cut length, compare the average actual cut length to a target cut length, and to adjust web tension or feed roll speed to achieve the target cut length. Actual cut length variation is thereby reduced. Furthermore, short term cut length variation is further reduced by minimizing the tension of the web just prior to the material being cut.

Abstract: A rotating shearing device for cropping fast-running rolling stock, in particular wire, includes two axially cutting annular knives which rotate about their axes at the same rotational speed. The two axially cutting annular knives include end cutting edges directed toward one another which converge to the clearance required for separating running stock during the cutting operation and lie in planes which are arranged at an acute angle to one another and intersect one another in a line. The rolling stock is guided toward the shearing device by a front guide and guided away from the shearing device by a rear guide. The front guide is pivotable to change in the relative position between the rolling stock and the cutting body so that the rolling stock may be guided either through the space between the annular knives which is free for the cut-free passage of the rolling stock or into the wedge-shaped cutting region of the annular knives.

Abstract: An improved rotary pressure cutting apparatus that cuts, perforates, and scores plies of paper, window materials, label stock, and plastic laminates in conjunction with soft, discontinuous, and/or non-cylindrical anvil surfaces. A light weight, low mass anvil in the form of a metallic sheet is supported in a strike position beneath a rotating blade. The anvil is biased by springs or elastomeric members toward the strike position and moves with the material being cut and the moving cutting blade during a cut. The anvil is returned to the strike position by the biasing member upon completion of the cut.

Abstract: Disclosed is a rotary cutter including a first roll and a second roll. With contact peripheries of the first roll being pressed against contact peripheries of the second roll, the first roll and the second roll are driven to rotate in synchronism with each other so that a first cutting blade is opposed to a second abutment at a distance apart and a second cutting blade is opposed to a first abutment at a distance apart. When fed between the first roll and the second roll, a workpiece is cut only halfway through the thickness from both sides thereof.

Abstract: A web speed metering device to which a moving web is fed at a constant web infeed speed and from which the web periodically exits at a different speed that is correlated with the timing of a downstream operation performed on the moving web. The metering device is a rotatable member that is non-axisymmetric and that has a cross-sectional shape having a centroid that is offset from the axis of rotation of the rotatable member to change the web output speed as the web exits from the metering device. The metering device allows a web to be fed to a downstream cutting device and enables the web output speed to be regulated so that the web as it leaves the metering device can be cut transversely by a non-instantaneous cut that takes place over a predetermined machine-direction distance, such as a chevron-shaped cut.

Abstract: To shorten the processing time in modern plants for cutting away pieces or sections from a continously moving endless material, e.g. a glass strip, one after the other by flying cutting the cutting bridge carrying the cutting device (6) is accelerated until at a speed within a predetermined tolerance range of the feed speed of the continuously running endless material. Then the cutting bridge speed is synchronized for each piece or section to be cutaway and the cutting away of each piece or section takes place after the synchronization. To attain a very high precision cutting the spacing of the front cut edge formed when the previous piece or section is cut away from the cutting device is measured by means of an image-taking device (7) prior to cutting away of the next piece or section. Then the measured spacing is compared with a set value for the spacing and the speed of the cutting bridge is synchronized or fine tuned according to the comparison prior to cutting away the next piece or section.

Abstract: A sawguide assembly includes a set of sawguides positioned adjacent to one another to create an array of laterally-abutting sawguides. A sawguide biasing assembly biases the sawguides against one another. The array is supported for movement along a lateral path generally parallel to the axis of the arbor. A lateral driver is used to move the entire array in unison along the lateral path. A sawguide array skewing assembly couples the sawguides to one another so that the sawguides can be pivoted in unison about their respective pivot axes by a skewing driver.

Abstract: This invention relates to fabrication of tube bank style heat exchangers and similar assemblies. It provides a novel apparatus and a method for trimming polymeric tubes disposed within a core structure (such as a heat exchanger core) and securing these tubes within the core structure.

Abstract: An apparatus is provided for sizing a stator wedge slide having a wedge-shaped profile. The apparatus includes a support bed for supporting the slide; a slide cutter for cutting the slide; a slide positioner for positioning the slide relative to the slide cutter; and a thickness gauge for determining a thickness of the slide. A position of a first cut is located based on a first thickness determined by the thickness gauge.

Abstract: The present invention provides a web perforating apparatus which includes a system for detecting and indicating when a blade in the apparatus is broken, dull or otherwise not perforating the web. The apparatus is typically used with rewinders or other similar machines that produce perforated sheets of products, such as paper, using sets of stationary anvil blades and rotating perforating blades. The apparatus comprises at least one anvil including a blade holder and an anvil blade which is positioned within the blade holder. The blade holder is formed of an insulating material for electrically isolating the anvil blade from the machine frame of the rewinder. An electrical conductor is coupled to the anvil blade for supplying an electric current to the anvil blade from a current source. The apparatus also includes at least one grounded perforating blade for moving relative to the anvil blade and cooperating with the anvil blade to perforate the web at predetermined points along its length.

Abstract: A chopper for chopping fibers or fiber strands having a back up roll and a blade roll containing blades that work against a peripheral surface of the back up roll and a method of using is disclosed. The chopper has a number of improved features for reducing the frequency of long fibers or long fiber strands and fuzz from getting into the chopped product. The chopper can have one or any combination of the improvements. The improvements include a strand guide located at least two feet up stream of the chopper, a first starting roll for starting a new strand that runs on a fluid bearing that can be adjusted to control the RPM of the first starting roll, a mount for a roll that runs against the peripheral surface of said back up roll, a strand guide insert for reducing fuzz generation and for preventing fuzz from getting into the product, and a deflector plate for catching and deflecting chopped strands thrown off the back up roll into a chopped strand product chute.

Abstract: Disclosed herein is cutting assembly for use with a label printer. The cutting assembly includes: a cutting assembly frame; a plotter cutter for plotter cutting a label media, the plotter cutter connected to the cutting assembly frame; an end cutter for end cutting the label media, the end cutter connected to the cutting assembly frame; and a drive mechanism connected to the plotter cutter and the end cutter. During end cutting, the plotter cutter is coupled to the end cutter such that both the plotter cutter and end cutter are driven by the drive mechanism. During plotter cutting, the plotter cutter is uncoupled from the end cutter such that only the plotter cutter is driven by the drive mechanism.

Abstract: The described method serves for trimming or cutting during conveyance in a conveying direction (F) substantially in parallel to their main surfaces, flat objects along predetermined cutting lines parallel to the conveying direction (F). The objects are conveyed between a first and a second cutting edge (SK1 and SK2) and are cut by a relative movement of the two cutting edges. The first cutting edge (SK1) is positioned, e.g. stationary, in the plane of a support surface supporting the objects and for each cutting process, the second cutting edge (SK2) is moved past the first cutting edge in such a manner that at least the cutting point on the second cutting edge has a speed component in conveying direction (F) which has the same size as the conveying direction and a speed component perpendicular to the support surface.

Abstract: A web speed metering device to which a moving web is fed at a constant web infeed speed and from which the web periodically exits at a different speed that is correlated with the timing of a downstream operation performed on the moving web. The metering device is a rotatable member that is non-axisymmetric and that has a cross-sectional shape having a centroid that is offset from the axis of rotation of the rotatable member to change the web output speed as the web exits from the metering device. The metering device allows a web to be fed to a downstream cutting device and enables the web output speed to be regulated so that the web as it leaves the metering device can be cut transversely by a non-instantaneous cut that takes place over a predetermined machine-direction distance, such as a chevron-shaped cut.

Abstract: The present invention relates to a novel helical drum shear which is operable to cut a strip of material which moving at a first velocity. The cut is formed along a substantially straight line at a specific angle. The specific angle may be at an angle perpendicular to the feed direction thereby producing a squared cut. The helical drum shear comprises a means for cutting the material wherein the cutting means moves at a second velocity which is at a predetermined angle from the first velocity. The apparatus further comprises a means for moving the cutting means at a third velocity such that the combination of the second velocity and the third velocity is equivalent to the first velocity and the material is helically sheared along a substantially straight line oblique to the first velocity.

Abstract: Apparatus for dispensing paper toweling includes a rotatable toweling support roller and a cutter blade pivotally mounted on the outer peripheral portion of the roller. The blade is movable between a first position in which the cutting edge of the blade is positioned closely adjacent to the outer peripheral portion and a second position in which the blade is disposed at an angle relative to the outer peripheral portion with the cutting edge of the blade spaced from the toweling support roller. The cutter blade when in the second position projects in a direction generally opposed to the direction of rotation of the toweling support roller so that pulling force exerted on the toweling by a user will bear against the cutting edge of the cutter blade to sever the toweling.

Abstract: An improved working die and method of producing it are disclosed wherein a die blank presents a relatively smooth surface and has ceramic material molded on its smooth surface in a configuration corresponding to the design of the product to be cut or formed by the die.

Abstract: The invention relates to a device for producing different hole patterns in sheet-shaped print materials. An apparatus and process for producing different hole patterns in a sheet-shaped print material is provided wherein a punch in a tool roller is raised and lowered relative to an outer surface of the tool roller in order to effectuate and ineffectuate, respectively, punching by the punch. According to a preferred embodiment, a die roller is provided having a die corresponding with the punch, and sheets are fed through the tool roller and the die roller. In one embodiment punches and dies are provided, and the punches are selectively raised and lowered in order to achieve a desired hole pattern in the sheet.

Abstract: There is disclosed a cut line forming method including: using a cutter roll (1) having cutting blades (2) protruded on its outer circumference and an anvil roll (10) for receiving the cutting blades; feeding a sheet (20) into the clearance between the cutter roll and the anvil roll; and turning the rolls individually to form cut lines (21) in the sheet. The cutting blades (2) of the cutter roll (10) are formed into a shape of letter “V”. The anvil roll has receiving faces (11) of a predetermined width (w) formed at an interval in a roll axis direction. The cutter roll (1) is turned to direct the crests of the V-shape of the cutting blades forward of the turning direction thereby to advance cuts from the side of the crests of the V-shape so that cut lines corresponding to the width size of the receiving faces may be intermittently formed in the sheet along the V-shape.

Abstract: To shorten the processing time in modern plants for cutting away pieces or sections from a continously moving endless material, e.g. a glass strip, one after the other by flying cutting the cutting bridge carrying the cutting device (6) is accelerated until at a speed within a predetermined tolerance range of the feed speed of the continuously running endless material. Then the cutting bridge speed is synchronized for each piece or section to be cutaway and the cutting away of each piece or section takes place after the synchronization. To attain a very high precision cutting the spacing of the front cut edge formed when the previous piece or section is cut away from the cutting device is measured by means of an image-taking device (7) prior to cutting away of the next piece or section. Then the measured spacing is compared with a set value for the spacing and the speed of the cutting bridge is synchronized or fine tuned according to the comparison prior to cutting away the next piece or section.

Abstract: An improved rotary pressure cutting apparatus that cuts, perforates, and scores plies of paper, window materials, label stock, and plastic laminates in conjunction with soft, discontinuous, and/or non-cylindrical anvil surfaces. A light weight, low mass anvil in the form of a metallic sheet is supported in a strike position beneath a rotating blade. The anvil is biased by springs or elastomeric members toward the strike position and moves with the material being cut and the moving cutting blade during a cut. The anvil is returned to the strike position by the biasing member upon completion of the cut.

Abstract: The described method serves for trimming or cutting during conveyance in a conveying direction (F) substantially in parallel to their main surfaces, flat objects along predetermined cutting lines parallel to the conveying direction (F). The objects are conveyed between a first and a second cutting edge (SK1 and SK2) and are cut by a relative movement of the two cutting edges. The first cutting edge (SK1) is positioned, e.g. stationary, in the plane of a support surface supporting the objects and for each cutting process, the second cutting edge (SK2) is moved past the first cutting edge in such a manner that at least the cutting point on the second cutting edge has a speed component in conveying direction (F) which has the same size as the conveying direction and a speed component perpendicular to the support surface.

Abstract: An apparatus and method for distributing wear over a plurality of elements on a rotating member. In the case of a cutoff or perforation roll, a plurality of retractable cutoff or perforation blades can be actuated to be extended or retracted to selectively cut or perforate a web. To distribute blade wear, extended blades are occasionally retracted while other blades are extended. Where it is desired to continue producing cuts or perforations of a desired length through such blade indexing, the spacing and number of blades before and after indexing are preferably the same. Most preferably, each blade retracted during indexing is replaced by a blade on the same side of and at the same distance from the blade being retracted. To hold the web during web cutting or perforating operations, the roll is preferably provided with vacuum apertures to which is supplied vacuum via vacuum lines, vacuum valves, and a vacuum source, thereby creating suction through the vacuum apertures.

Abstract: A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. having an idler roll for pressing the item(s) against a backup roll for pulling the item(s) into the chopper uses an improved mount for the idler roll that maintains the outer peripheral surface of the idler roll into more consistent contact with more consistent force with the item(s) being chopped.

Abstract: A cutting unit is described that contains a pair of cylinders disposed opposite one another with a gap formed there-between for receiving a ribbon. The pair of cylinders include a first cutting cylinder having a periphery with a cutting knife disposed helically about the periphery and a second cylinder. A drive rotates the first cutting cylinder for cutting the ribbon such that a signature cut from the ribbon has a smooth, straight edge.

Abstract: A cutting/scoring method for at least one row of adjacent flat elements (3a, 5n) in a material in strip form (1), of which at least one cutting edge (3′-5′) or scoring line, transversely of said strip material (1), is straight and extends from one edge of said strip material (1) to the other, consisting in passing said strip material (1) between cutting/scoring cylinders (R1, R2) of a rotary cutting machine. There is created along said cutting edge (3′-5′) or said scoring line respectively, extending from one edge of said strip material (1) to the other, at least one offset (k, &agr;) in the direction of transit of said strip material (1) so that said cutting edge (3′-5′) or said scoring line respectively does not coincide with the generatrices of said cylinders.

Abstract: A rotating shearing device for cropping fast-running rolling stock, in particular wire, includes two axially cutting annular knives which rotate about their axes at the same rotational speed. The two axially cutting annular knives include end cutting edges directed toward one another which converge to the clearance required for separating running stock during the cutting operation and lie in planes which are arranged at an acute angle to one another and intersect one another in a line. The rolling stock is guided toward the shearing device by a front guide and guided away from the shearing device by a rear guide. The front guide is pivotable to change in the relative position between the rolling stock and the cutting body so that the rolling stock may be guided either through the space between the annular knives which is free for the cut-free passage of the rolling stock or into the wedge-shaped cutting region of the annular knives.

Abstract: A method for manufacturing an index divider sheet assembly adapted for feeding into ink jet printers and the like for a printing operation on the sheet body and/or the index tab of the assembly. The assembly includes a divider sheet having a tab extending out of one edge and a reinforced binding edge flap. The divider sheet can be manufactured from ink jet receptive top-coated white cardstock. A guide strip along the tab edge assists the assembly being fed and passing through the printer despite the presence of the tab. The binding edge flap is folded over onto the body of the sheet and held thereon to reduce the width dimension of the assembly so that it can be fed into and passed through the printer. After passing through the printer, the guide strip is removed and the flap is unfolded.

Abstract: A machine for continuously making gaskets and similar flat products. Sheet gasket material is fed from a roll and through tooling that successively: cuts the outline, separates the center scrap, then separates the gaskets from the remaining sheet stock waste. The cutting tool rotates. The center scrap and the gaskets may be removed by rotating tooling or by vacuum and air pressure, respectively. Design and fabrication of such a machine, especially the cutting roller, is made possible by state of the art CAD software.

Abstract: A chopper for chopping fibers or fiber strands having a back up roll and a blade roll containing blades that work against a peripheral surface of the back up roll and a method of using is disclosed. The chopper has a number of improved features for reducing the frequency of long fibers or long fiber strands and fuzz from getting into the chopped product. The chopper can have one or any combination of the improvements. The improvements include a strand guide located at least two feet up stream of the chopper, a first starting roll for starting a new strand that runs on a fluid bearing that can be adjusted to control the RPM of the first starting roll, a mount for a roll that runs against the peripheral surface of said back up roll, a strand guide insert for reducing fuzz generation and for preventing fuzz from getting into the product, and a deflector plate for catching and deflecting chopped strands thrown off the back up roll into a chopped strand product chute.

Abstract: To shorten the processing time in modern plants for cutting away pieces or sections from a continously moving endless material, e.g. a glass strip, one after the other by flying cutting the cutting bridge carrying the cutting device (6) is accelerated until at a speed within a predetermined tolerance range of the feed speed of the continuously running endless material. Then the cutting bridge speed is synchronized for each piece or section to be cutaway and the cutting away of each piece or section takes place after the synchronization. To attain a very high precision cutting the spacing of the front cut edge formed when the previous piece or section is cut away from the cutting device is measured by means of an image-taking device (7) prior to cutting away of the next piece or section. Then the measured spacing is compared with a set value for the spacing and the speed of the cutting bridge is synchronized or fine tuned according to the comparison prior to cutting away the next piece or section.

Abstract: Novel apparatus and method are disclosed for cutting a sheet material by a rotary die cutter. A die shaft has an outer circumference and at least two die shaft bores having coaxial counterbores. The counterbores relieve stresses imposed by a die cutting insert. A knife formed about an outside periphery of the die cutting insert has a cutting edge and first and second side walls aligned at an angle of at least 15 degrees. The die cutting insert is removably attached at the inside periphery to the die shaft outer circumference. At least two threaded bolts sized to die cutting insert apertures secure the die cutting insert to the die shaft bores. Stresses are relieved in the internal metal of the die shaft as each insert is mounted, interchangeably and repeatedly, for cutting layered absorbent articles in large numbers and with multiple replacement of cutting die inserts without machining all of the die surfaces to keep the nip constant.

Abstract: A hydraulic press is provided with a fixed base and at least one rail. The hydraulic press is slidably disposed on the rail. A die is slidably mounted on the hydraulic press for operatively engaging a moving coil of material upon activation of the hydraulic press. A clamp is fixably connected with the die and is slidably mounted on the hydraulic press. The clamp has a pneumatically powered anvil which secures itself to the moving coil of material to cause the clamp and the die to move along with the moving coil of material. A first stop is disposed between the press and the die for providing engagement there between to stop relative movement between the die and the hydraulic press. An accelerator displaces the hydraulic press with respect to the base to move along with the moving coil of material. The clamp holds the material while the die engages the moving coil of material to ensure tension in the moving coil of material.

Abstract: A variable length rotary cutting system for cutting sheet material in various desired cut lengths, including a knife roll and an anvil roll between which the sheet material is passed for cutting. A drive system drives the knife roll at varying speeds during a cycle of rotation and includes a drive gear and an offset gear mounted in an off-center mounting so as to be rotated at varying speeds by the drive gear. The rotation of the offset gear is transmitted to the knife roll so as to cause the knife roll to rotate at varying speeds about a cycle of rotation to enable the knife roll to cut varying lengths of the sheet material.

Abstract: A method of manufacturing interlocking sheet metal floor members for use in a grain storage bin or like application requiring passage of fluid through the floor members without permitting passage of granular material therethrough. The method comprises the steps of forming a first interlocking section on a first side edge of a strip of sheet metal and a second interlocking section on a second side of the strip of sheet metal; shearing, opening and corrugating the strip of sheet metal in one roll forming stand which utilizes a pair of shearing and corrugation rollers, wherein the shearing step includes shearing rows of slits across a width of a central portion of the strip of sheet metal, wherein the opening step includes opening the slits to permit fluid flow therethrough, and wherein the corrugating step includes corrugating the strip of sheet metal along each of the series of the slits; and cutting the strip of sheet metal at selected transverse locations to form the sheet metal floor members.

Abstract: A method and an arrangement for operating a rotating starting shear operating in a start-stop operation on rolling stock travelling at different speeds in wire mills, light-section mills, medium plate mills and billet mills, wherein the shear, whose gear system is connected through a coupling to a drive motor, is accelerated from the position of rest to approximately rolling speed and, after the cut has been carried out, is stopped again. A gear mechanism is arranged between the gear unit of the shear and the drive motor, wherein torsion-proof couplings are arranged between the gear unit of the shear and the gear mechanism and between the gear mechanism and the drive motor.

Abstract: A method for trimming flat printed products along a predetermined cutting line includes the steps of continuously feeding the printed products in succession in a feed direction parallel to a plane defined by the printed products. The printed products are passed between two superposed knives, each knife having a cutting edge facing the other cutting edge. The two knives are moved in cutting engagement with one another in a direction that is substantially perpendicular to the plane of the printed products. The apparatus according to the invention includes a conveyor for continuously feeding the printed products in succession in a feed direction parallel to a plane defined by the printed products. At least one cutting device having two superposed knives is provided. Each knife has a cutting edge facing the other cutting edge. The printed products are passed by the conveyor between the two knives.

Abstract: A blade mounting arrangement for mounting a cutoff blade in a roll of a shear cut type, cut-off system includes an elastomeric member interposed between the cutoff blade and a mounting surface of the roll. The elastomeric member is configured and arranged to provide varying resistance to compressive loading, the resistance varying along a portion of elastomeric member. In one embodiment, the elastomeric member includes a first resistance portion which engages the cutoff blade near a fixed inner edge portion of the blade, and a second resistance portion which underlies the cutoff blade near its free edge portion. The second resistance portion is thinner than the first resistance portion providing a gap between the free edge portion of the cutoff blade and the second portion, the free edge portion of the cutoff blade engaging the second resistance portion only when the cutoff blade is subjected to a load force that is greater than a predetermined value.

Abstract: A method of operating an orbital saw to transversely sever superposed elongated web plies into shorter length products which includes advancing along a linear path superposed elongated web plies having a cross sectional area of at least about 3.5 square inches (2200 mm.sup.

Abstract: High-speed flying shears and method employing the same with contrarotating blades (13) and scrap-shearing blades (18) fitted side by side to blade-holder drums (30), which is suitable to shear bars (11) travelling at 120 meters per second or more, the shears comprising upstream a first one-channel switch (16) of a start/stop type and downstream a second one channel switch conveying the bars (11) lengthwise and capable of being oriented in synchronization laterally by rotation on a plane substantially containing the axis of travel of the bars (11) and parallel to, and between, the planes containing the axes (12) of rotation of the pair of blade-holder drums (30) so as to make the bars (11) pass in the shearing area (35), the circumferential position of the blades (13) being associated with the lateral position of the first one-channel switch (16) at least in the transient moment of the passing of the bars (11) in the shearing area (35), the first and second switches (16-20) having at least a first extreme posi

Abstract: A conveyor moves food product, such as pies or cakes, within a cutting range of a knife positioning assembly. The knife positioning assembly supports an ultrasonic knife assembly which has a blade adapted for cutting the food product. The knife assembly is disposed above the conveyor and is moved to the food product in a cutting position therewith when the conveyor has the food product within the cutting range. The knife assembly is movable through at least two axes by the positioning assembly for positioning and cutting with the blade.

Abstract: A conveyor moves food product, such as pies or cakes, within a cutting range of a knife positioning assembly. The knife positioning assembly supports an ultrasonic knife assembly which has a blade adapted for cutting the food product. The knife assembly is disposed above the conveyor and is moved to the food product in a cutting position therewith when the conveyor has moved the food product within the cutting range. The knife assembly is movable through at least two axes by the positioning assembly for positioning and cutting with the blade.

Abstract: An apparatus for cutting, including an anvil cylinder which may have a plurality of cut rubbers strips affixed around the anvil cylinder and a cut cylinder which is mounted for rotation about an eccentric axis. Two knife boxes may be mounted on the cut cylinder, each knife box having a knife and cheekwood for securing the knife to the cut cylinder. A paper tape guides the material to be cut between the cut cylinder and the anvil cylinder. When one knife box degrades, a knife sleeve on the cut cylinder can be indexed so that the other knife box takes the place of the degraded knife box. When a cut rubber strip degrades, the anvil cylinder can be indexed so that another cut rubber strip takes the place of the degraded cut rubber strap. Either of these functions can occur while the apparatus is still running. The anvil cylinder can also use a cut rubber sleeve.

Abstract: A rotatable perforating roll, for use in a continuously operating paper-converting rewinder, comprises at least a first plurality of pockets and a second plurality of pockets, each of the pockets designed to receive at least one perforating surface therein. The pockets are spaced apart from one another along the roll's outer circumference such that the pockets of the first plurality are equally spaced from one another at a first angular distance, and the pockets of the second plurality are equally spaced from one another at a second angular distance different from said first angular distance, but the pockets of the first plurality are unequally spaced from the pockets of the second plurality.

Abstract: A rapping device is provided for forming a battery separator or the like by rapping from a flexible elastic band material. A rapping device for manufacturing works in a specified shape by rapping from an elastic band material comprises a conveying drum having a first suction unit and a second suction unit for conveying the band material while suction is applied, a die drum having a blade possessing a forming position for rapping and forming the works with a width coinciding with the width of the band material, and a cutting position for cutting between the adjacent works, disposed continuously on the outer circumference at every pitch equal to the length of each work, and a die drum driving device for rotating and driving the die drum in synchronization with the conveying speed of the band material.