Abstract: The present disclosure is directed to a method for cutting a coreless rolled paper product. The method includes defining a core offset value for a cut, the cut having a starting point and an ending point, setting a plunge speed for a saw to a first plunge speed, and changing the plunge speed to a second plunge speed when the saw reaches the core offset value.

Abstract: Device for cutting dough, comprising a conveyor belt, for conveying the dough in an essentially horizontal direction of conveyance, a sledge, arranged above the conveyor belt, and movable in the direction of said conveyor belt, a cutting blade, suspended on the sledge, and movable with respect to the sledge in an essentially vertical direction toward and from the conveyor belt, for cutting the dough on the belt, a first drive, for moving the sledge in the direction of the conveyor, a second drive, for moving the cutting blade in a vertical direction toward and from the conveyor belt, wherein the second drive is arranged outside the sledge, in a fixed position, and provided with a transmission for conveying movement from the second drive to the cutting blade. The invention further relates to a method for operating such device.

Abstract: A method for cutting manufactured articles (M) comprises steps of advancing a manufactured article (M) along an advancement direction (A) at a predetermined speed; predisposing a cutting device (3) associated with the manufactured article (M) and movable along the advancement direction (A); advancing the cutting device (3); synchronizing the speed of advancement of the cutting device (3) with the speed of advancement of the manufactured article (M); activating the cutting device (3); retracting the cutting device (3); the steps of synchronising and activating the cutting device (3) are comprised between the advancement step and a corresponding retracting step in order to define a cutting cycle of the manufactured article (M). The cutting cycle comprises further steps of re-synchronising the speed of advancement of the cutting device (3) with the speed of advancement of the manufactured article (M).

Abstract: In one example, a cutter for cutting a moving media includes a cutting tool movable along a first straight line at a speed sufficient to cut moving media along a second straight line different from the first straight line.

Abstract: The present invention provides a perforating station comprising two or more discrete perforating stations, the stations synchronized with one another to cut a line of perforations across a web, such as a web of tissue paper, moving at high speeds. By providing two or more synchronized perforating stations the perforating station may increase the number of impacts per minute compared to prior art perforating devices.

Abstract: To provide a noodle string treatment apparatus and treatment method capable of manufacturing instant noodles that are short noodle strings. The noodle string treatment apparatus of the present invention has: a cutting device having a rotary blade and cutting a batch of noodle strings into a predetermined length; and a control device for controlling a blade edge peripheral speed of the rotary blade, wherein the control device changes the blade edge peripheral speed of the rotary blade during rotation thereof.

Abstract: In order to make holes with different spacings between them, a punching tool is provided with punching dies on its circumference and interacts with an impression cylinder. Between two punching operations, either of the punching dies and the impression cylinder is driven, at times, at a circumferential speed that is greater or smaller than the movement speed of the material web that is to be punched or is stopped briefly and, until the next punching operation, brought once again to a circumferential speed that corresponds to the movement speed of the material web that is to be punched.

Abstract: A rotary shear for subdividing a product moving longitudinally along a path comprises a parallel pair of shafts having cutting blades connected thereto. The shafts are on opposite sides of and arranged symmetrically with respect to a center line of the shear. Driven gears on each of the shafts are spaced one from the other. A first pinion gear is in meshed relationship with one of the driven gears, and a second pinion gear in meshed relationship with the other of the driven gears. The first pinion gear has a diameter smaller than the diameter of the second pinion gear. The first and second pinion gears are in an intermeshed relationship at a location spaced laterally from the center line of the shear.

Abstract: A rotary cutting device includes a body having a cutter blade with a cutting edge and a pressure roller mounted relative to the cutter blade. The cutter blade is configured to rotate about a rotational axis. The pressure roller is rotationally fixed. The cutter blade and the pressure roller are positioned relative to each other such that pressure is applied to a material fed therebetween. As the cutter blade rotates relative to the pressure roller, the pressure applied to the material being fed therebetween allows for a width of material to cut by a cutting edge of rotating cutter blade. An embossing roller may be used in place of the cutter blade to emboss material. The device also includes guide for guiding material into the machine, pressure adjustment for pressure applied to the material, and rotational speed control. A method for using the rotary cutting device is also disclosed.

Abstract: A transfer apparatus for a sheet material article trimmer includes a transfer element configured to grip the sheet material article and move the sheet material article in a transfer direction onto a side table of the sheet material article trimmer. A driver is provided, the driver being configured to move the transfer element at the same speed as the side table during period of time when the sheet material article is gripped by the transfer element and the side table is moving in the transfer direction.

Abstract: A dual ratio drive for a rotary sheer comprises a parallel pair of first shafts carrying freely rotatable first gears. A pair of second shafts are rotatable about axes parallel to the axes of the first shafts. Each second shaft carries a shear blade, and a second gear in meshed relationship with one of the first gears. A drive shaft is connectable to one of the second shafts by a first gear set having a high speed ratio, and is connectable to one of the first shafts by a second gear set having a low speed ratio. A clutch alternately engages one or the other of the first and second gear sets to drive the second shafts and their respective shear blades at the different speeds.

Abstract: A cutting system for an installation (A) for producing extruded plastic or laminated tube pipes. A cutting device has a cradle that can be reciprocated relative to a base and on top of which the cutting device rests. The system is characterized in that the cradle on which the cutting device rests is configured as a linear motor and can be displaced relative to the base.

Abstract: In a method of cutting roofing shingles, multiple webs of roofing material are moved to a cutter. The webs are positioned in stacked relationship prior to the cutter. The webs have distinct portions such as tabs. The locations of the distinct portions of the moving webs are sensed by sensors. End cuts are simultaneously cut through the multiple stacked webs with the cutter to produce separate roofing shingles from the webs. The movements of the webs are controlled, based on the sensed locations of the distinct portions, so that the end cuts of the roofing shingles are positioned at predetermined locations relative to the distinct portions.

Abstract: A high-throughput, high-end-product-recovery, lineal log bucking device featuring continuous stem travel during the cutting process by using a simple and efficient machinery design for economy of equipment and monies. The apparatus includes: (1) a saw for cutting stem into logs; and (2) apparatus for accelerating the carrier up to the speed of the stem conveyor(s), maintaining the speed during the cut, decelerating the carrier, and then returning the carrier to its starting point.

Abstract: A three knife trimmer has a front knife and two lateral knives. A drive device drives the front knife and the two lateral knives such that a front cut and at least one lateral cut are performed with phase displacement by the front knife and at least one of the two lateral knives on the material to be cut. The drive device has at least one drive curve. At least two pivotable levers engage the drive curve, wherein the front knife and at least one of the two lateral knives are drivingly connected to the at least two pivotable levers.

Abstract: An apparatus for perforating a packaging film comprises at least one rotary cutter, which is rotationally driven by suitable drive means, and a fixed cutter, the cutters having respective blades by which a packaging film moving between the knives themselves on a supporting surface is perforated at regular intervals. The rotary knife is rotated by drive means which move it at a controlled speed of rotation that varies within one full angular revolution.

Abstract: A sheet processing machine receives sheets from a sheet feeder. The sheets are inspected and their trailing ends are trimmed. Subsequently, the sheets are turned and are split into a plurality of partial sheets or sheet pieces. The now trailing ends of the sheet pieces are trimmed. The sheet pieces are separated axially and are delivered to a sheet receiving device where the individual sheet pieces are deposited in various stacks.

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 programmable command module for inputting a surface foot rating parameter into a device for controlling the spindle speed of a cutting tool. Based upon the surface foot rating, the proper speed of the spindle is determined with respect to a particular cutting tool parameter, such as the tool's diameter. The spindle speed setting is transmitted to an AC inverter which in turn controls the operation of an AC motor for rotating the spindle at its proper speed. Alternatively, a second embodiment of the present invention would include a programmed memory provided with the surface foot rating of a plurality of materials. Once the type of material, the type of tool operation, as well as the diameter of the cutting tool is inputted into this embodiment, the proper RPM speed of the spindle would be determined.

Abstract: An arbitrarily positioned lateral perforation forming apparatus can form a lateral perforation at an arbitrary position or selected position in a continuous web paper at high precision by a simple control system with small control amount. A lateral roulette cylinder projecting a lateral roulette edge on its outer periphery, arranged on one side of the continuous web paper and rotating in a traveling direction of the continuous web paper; and a receptacle cylinder projecting an edge projecting portion opposing to the lateral roulette edge of the lateral roulette cylinder on its outer periphery, arranged on the other side of the continuous web paper, rotating in the traveling direction of the continuous web paper, and forming a lateral perforation in the continuous web paper when the edge receptacle portion opposes the roulette edge; are rotated in synchronism with traveling of the continuous web paper in the drive system.

Abstract: In a method of cutting roofing shingles, multiple webs of roofing material are moved to a cutter. The webs are positioned in stacked relationship prior to the cutter. The webs have distinct portions such as tabs. The locations of the distinct portions of the moving webs are sensed by sensors. End cuts are simultaneously cut through the multiple stacked webs with the cutter to produce separate roofing shingles from the webs. The movements of the webs are controlled, based on the sensed locations of the distinct portions, so that the end cuts of the roofing shingles are positioned at predetermined locations relative to the distinct portions.

Abstract: A ribbon is cut into signatures with a cutting cylinder having a fixed diameter and rotating at a variable angular velocity. During the cutting operation, the cutting cylinder rotates at an angular cutting velocity that is substantially equal to the constant velocity of the ribbon. The angular velocity of the cutting cylinder is varied between the cutting operations in order to cut signatures of a desired length. A cutting cylinder system is also provided.

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 sheet processing machine utilizes chain conveyors, each of which are provided with a plurality of chain gripper devices, to convey sheets. As each sheet is conveyed, it is cut by a transverse cutting device and is inspected. Each cut and inspected sheet may then be separated into several partial sheets which are then conveyed independently of each other to selectable stacks in a sheet delivery system.

Abstract: An apparatus for the dimensionally accurate cutting of a product carrier (1) which is in the form of a strip, is transported further in a cyclic or continuous manner in the longitudinal direction and has cells which are arranged one behind the other and are sealed in an airtight manner comprises a rotating cutter roller (15), which severs the product carrier (1) in each case in the region of a sealing web (4) which is situated between two cells (2), is arranged transversely with respect to the longitudinal direction and is provided with a lattice-like embossing (19). In order to identify and localise the sealing web (4), an optical reflection sensor (6) is arranged above and/or below the product carrier (1) and generates an AC voltage signal which corresponds to the lattice structure when the sealing web (4) is located in the region of the reflection sensor (6), the number of periods being a measure of the width b of the sealing web (4).

Abstract: A rotary punching device for punching a hole on a sheet includes: a first rotary shaft having an outer peripheral surface; a punch mounted on the outer peripheral surface of the first rotary shaft; a second rotary shaft arranged in parallel with the first rotary shaft, the second rotary shaft having an outer peripheral surface; a die mounted on the outer peripheral surface of second rotary shaft; a motor connected to the first and second rotary shafts to synchronously drive the first and second rotary shafts such that the punch and the die are engaged with each other within a predetermined rotational angle range; a sheet feeding mechanism for feeding the sheet into between the first and second rotary shafts at a constant sheet feeding speed to punch the sheet by the punch and the die; and controller for controlling the rotation speed of the motor referring to the sheet feeding speed.

Abstract: A method and apparatus is provided for selectively cutting sheets of paper of variable length from a paper supply having a continuous web moving from an upstream location to a downstream location through a pair of pinch rollers and along a predetermined path to a rotary cutter. A controller controls the rotation of the rotary cutter. First and second sensors sense the angular positions of the rotary cutter and pinch rollers, respectively, to provide respective input signals to the controller indicative thereof. A format selector, controlled by an operator, provides a third input signal to the controller indicative of the speed and format for cutting individual sheets from the web. The controller is responsive to the first, second and third signals so that the rotary cutter cuts the sheets to the desired length and the pinch rollers feed the web at a desired speed.

Abstract: A method and apparatus for vertically scoring a tamper-indicating plastic closure includes a rotatably-driven carousel which includes mandrel assemblies at the periphery thereof. Each mandrel assembly includes a rotatable mandrel on which a respective closure is positioned in operative association, so that the mandrel and closure are moved relative to an associated scoring mechanism. The scoring mechanism includes at least one, and preferably a plurality, of rotatably driven scoring blades, with each blade arranged to engage and cut the pilfer band of a respective closure. Significantly, the system can be operated so as to closely approximate the preferred radial movement of the blade with respect to the closure, thus minimizing "digging" of the scoring blade into the plastic of the closure.

Abstract: Apparatus and method for indexing sheets cut from a web including a production line having an unwind at one end and a backstop at the other end, a printer and a rotary knife between the ends, the relation of the knife speed to the web speed being changed cyclically to develop longer and shorter sheets.

Abstract: A cut-off machine for cutting off predetermined lengths from a moving length of roll form material such as tubing adapted to be positioned downstream from a source comprising a plurality of cut-off assemblies which are reciprocated longitudinally of the moving length of material and operated during the movement to sever plural predetermined lengths. A servo motor crank drive assembly is provided which includes a crank having a roller which is yieldingly engaged with a cam track that has a flat tangential portion such that the roller traverses the flat portion. During this movement across the flat portion, the cut-off assemblies are reciprocated driven at a speed corresponding to the speed of movement of the tube at the time the lengths of tubing are being cut off.

Abstract: A cut-off machine for cutting off predetermined lengths from a moving length of roll form material such as tubing adapted to be positioned downstream from a source comprising a plurality of cut-off assemblies which are reciprocated longitudinally of the moving length of material and operated during the movement to sever plural predetermined lengths. The reciprocating and cutting movements are derived from a differential beam pivot assembly wherein one end of the beam is driven in a linear reciprocating path by a crank and the other end of the beam is connected to reciprocate the cut-off assemblies such that they are driven at a speed corresponding to the speed of the tube at the time the lengths of tubing are cut off. The apparatus can be adjusted to cut tubes of different lengths by moving the pivot point of the differential beam. The apparatus includes a mechanism for selectively disabling the operation of the cut-off assemblies and actuating them to permit greater lengths of tubes to be cut-off.

Abstract: A method and apparatus for moving workstations to perform work on a workpiece, includes moving workstations through a first path generally parallel to the workpiece and performing work on the workpiece. The workstation then returns along a second return path spaced further from the workpiece than the first path. The spacing between the plurality of workstations may be controlled such that sequential workstations work on the workpiece at predetermined intervals. Several embodiments of conveyors meeting the above-described broad features may be used.

Abstract: A cut-off machine adapted to be positioned downstream from a source, such as a tube mill, for receiving a moving length of tube stock from the mill and severing plural predetermined lengths from the moving length. The machine comprises a plurality of cut-off assemblies that are reciprocated longitudinally of the moving length of material and operated during the movement of sever plural predetermined lengths. Each cut-off assembly comprises a cutter blade that is supported for movement in an arcuate path and for radial movement. A cam in the path of each blade is engaged by a cam follower movable with the blade to cause the blade to move in a straight line transversely of the flattened tubing while severing the tube length.

Abstract: A cut-off machine for cutting off predetermined lengths from a moving length of roll form material such as tubing adapted to be positioned downstream from a source such as a tube mill for receiving a moving length from the mill and severing plural predetermined lengths from the moving length. The machine comprises a plurality of cut-off assemblies which are reciprocated longitudinally of the moving length of material formed by the mill and operated during the movement to sever plural predetermined lengths. The reciprocating and cutting movements are mechanically derived from a motor driven in synchronism with the speed of movement of the moving length. The apparatus includes mechanisms that permit the length of the tubes to be changed while the machine is operating.

Abstract: In a copier, automatically providing tabbed sheets in the output of the copy sheets of the copier, with an integral, on-line, copy sheet tab cutting system. Selectably varying the tab cutting position and cut tab size provides sequentially varied tabs. A selected tab may be cut on any selected sheet being fed through the regular copy sheet (paper) path of a xerographic or other copier or printer. This may be done by temporarily stopping and registering the leading edge of the selected sheet, and then shear cutting off the untabbed areas of the trailing edge of the sheet by moving an shear cutting assembly transversely across the direction of movement of the copy sheet path of the copier upstream of the lead edge registration position at slightly less than the sheet width distance, and providing irregular width cutting of the sheet (non-cutting of the tab area).

Abstract: A rotary die-cut apparatus, in which a die roll cooperates with a resiliently covered anvil roll for die-cutting carton blanks passed therebetween, incorporates a constant mesh gear train between the die roll and the anvil roll for providing an infinite hunting ratio between the rolls. This provides more uniform wear of the anvil roll cover and prolongs its effective life. Preferably, this gear train includes a harmonic drive having a wave generator cam rotatable by a trim motor. An arrangement for sensing changes in diameter of the anvil roll due to wear of its cover may provide an input for determining the speed of the trim motor. A resurfacing mechanism for removing the outer surface of the cover when worn may provide this input. A pulse generator is preferably incorporated in a controller of the trim motor for periodically making random changes in the speed of the trim motor.

Abstract: A tube cutoff machine for cutting a tube to precise lengths, which tube may be exiting from a tube mill at relatively high speeds. The tube cutoff machine includes a frame which supports a carriage for generally linear reciprocal movement parallel to the linear path of movement of the tube, the carriage in turn supporting a tube shearing apparatus. The carriage is reciprocated by a crank drive mechanism and additional connecting structure, which insures that the carriage will move at a constant linear speed for a duration of time sufficient to shear the tube as the carriage moves from a first location to a second location. The additional connecting structure includes a bell crank having an intermediate portion which is pivotally secured to the carriage, one end of the bell crank being secured to an end of a connecting rod of the crank drive mechanism, and the other end of the bell crank being provided with a cam follower which is caused to engage a stationary cam carried by the frame.

Abstract: A cutting machine has a plurality of switches, each switch corresponding to a predetermined cutting speed for each of one of the various groups of materials to be cut, the materials having different machinablility qualities. One of a plurality of constant voltage output means are connected with one of each of the plurality of switches for changing the speed of the cutting tool responsive to the constant voltage output means.

Abstract: A variable-velocity drive is provided which serves to so control the periral velocity of a window cutter roller in an envelope machine working from the reel that, irrespective of the developed length of such roller, the velocity of the window cutter is the same as that of the paper web for the time that such cutter is operative on such web. To this end, the variable-velocity drive is basically devised from a number of universal joints interconnecting shafts whose axes intersect one another at an angle of up to approximately 45.degree.; the universal joints are so offset from one another in rotation that the variations or irregularities arising in the discrete joints are superimposed upon one another so as to have an amplifying effect. Since any one such universal joint arrangement passes through two velocity maxima and two velocity minima per revolution, gearing is provided on the input and output side to make the universal joint arrangement run at half the cycle speed.

Abstract: A ledger mechanism for a rod cutting apparatus comprises a ledger; a coupling rod on which the ledger is fixedly mounted; and a pair of spaced gear arrangements each having a gear ratio of 2:1 to generate a pair of points, one point on each gear arrangement, which reciprocate in synchronism along straight parallel paths, wherein the coupling rod is pivotally coupled at one end to one of said pair of points on one gear arrangement, and at its opposite end to the other of said pair of points on the other gear arrangement so that the ledger reciprocates linearly.

Abstract: A tube cut-off unit is arranged at the downstream end of a tube mill and is powered by a drive unit mechanically driven by the main shaft of the mill which drives the tube forming rolls. The drive unit mechanically rotates a crank which, through a link, reciprocates a slide along the path of travel of the tube. A tube cut-off blade on the slide is cam actuated to sever the tube. Means are provided to insure that the slide is moving at a constant speed and at the same speed as the tube when the tube is being severed.

Abstract: The drum drive in a rotary shear includes a pair of driving and driven surge gears and a coupling of which the driving and driven companion members are drivingly connected with the driven surge gear and with one of the drums. The shear is adjustable for varying the length of stock cut on each revolution of the drums, and such adjustment also requires shear synchronization with the fed stock which is accomplished by disconnecting the coupling members and angularly adjusting the surge gears relative to the drums. The coupling of featured lock type has companion members with cylindrical surfaces which are normally in such an interference fit with each other as safely to transmit without slippage torque in excess of the maximum required for stock-cutting operation of the shear, yet these coupling members are disconnectible for shear synchronization by applying pressurized fluid to their cylindrical interface.

Abstract: One of the two knife holder shafts in a cross cutter for webs of paper or the like is driven by a unit wherein a motor rotates the input shaft of a bevel gear drive whose output shaft drives or constitutes one shaft of a universal joint. The other shaft of the universal joint is driven by the one shaft and transmits torque to the knife holder shaft or shafts by way of a step-up gear transmission and a clutch which allows for changes in angular positions of the knife holder shafts with reference to the universal joint. An extension of the axis of the input shaft of the bevel gear drive intersects the axes of the shafts of the universal joint at the point where the axes of the shafts of the universal joint intersect each other. To this end, the other shaft of the universal joint contains an elastically deformable but torsion-resistant insert.

Abstract: One of the two knife holder shafts in a cross cutter for webs of paper or the like is driven by a unit wherein a motor rotates the input shaft of a bevel gear drive whose output shaft drives or constitutes one shaft of a universal joint. The other shaft of the universal joint is driven by the one shaft and transmits torque to the knife holder shaft or shafts by way of a step-up gear transmission and a clutch which allows for changes in angular positions of the knife holder shafts with reference to the universal joint. An extension of the axis of the input shaft of the bevel gear drive intersects the axes of the shafts of the universal joint at the point where the axes of the shafts of the universal joint intersect each other. To this end, the other shaft of the universal joint contains an elastically deformable but torsion-resistant insert.

Abstract: A cutting apparatus for cutting into suitable lengths a shaped, elongated bar-like workpiece, such as a section bar of steel, which is being fed in continuously. The apparatus comprises a crank mechanism driven by a single, multi-function drive source and adapted to perform the functions of four devices simultaneously, in a timed relation, namely, a device for reciprocating a cutter in the direction of travel of the workpiece, a device for advancing and retracting the cutter relative to the workpiece, a device for driving a clamp which holds the workpiece during the cutting operation. The apparatus includes a cross type universal joint.

Abstract: There is provided a rotary die cutter for effecting a punching and scribing on a sheet which is fed between a die cylinder and an anvil cylinder disposed in parallel with said die cylinder. The die cylinder is adapted to be rotated in a predetermined direction and provided on its peripheral surface with a knife and a scribing rule. The anvil cylinder is adapted to be rotated in the opposite direction to the die cylinder and provided on its peripheral surface with an anvil for receiving the knife and the scribing rule. There is a mechanism for adjusting the clearance between the die cylinder and the anvil cylinder. A blade carrier is disposed adjacent to the anvil cylinder and slidable in the axial direction of the anvil cylinder. A cutting blade capable of cutting the anvil surface is attached to the blade carrier in such a manner as to move toward and away from the axis of the anvil cylinder.

Abstract: A device for converting the rotary motion of a crank mechanism into the linear motion of a slide block. In order to enable the slide block to make a constant velocity motion in an angular range required by the crank pin and extending from the crank pin in opposite directions, the device is designed to control the angular velocity of the crank mechanism along the ideal angular velocity variation curve.

Abstract: A pendulum-type flying shear having a speed range of a high speed to a low speed for shearing a hot rolled material having a large cross section in which there are provided vertically movable upper and lower cutting blades within a frame mounted on a crank shaft and the blades are moved towards and away from each other to shear the material while the frame is oscillated. Particularly, while the crank shaft is rotated at a constant speed, the oscillating speed of the frame is synchronized with the speed of movement of the material to be sheared and speed synchronizing apparatus including a gear device and the like is interposed between the oscillating device and the driving device so that a good shearing performance can be obtained with a small capacity of the driving device.

Abstract: An oscillation type flying shear of a constant cutting blade oscillation amplitude repeatedly started and shut down to effect shearing of material to specified lengths includes a device for effecting adjustments of the gear meshing position of gearing. Thus the cutting blade horizontal velocity can be made to match the velocity of the material.

Abstract: A paper sheeter for cutting two or more webs simultaneously into sheets has a rotary knife to make the cuts in desired register with marks (e.g. watermarks) carried by the web. A sensor is provided for detecting the marks on each web and a further sensor monitors the knife rotation; signals from the several sensors are fed to a control unit in which the signals from each mark sensor are compared with signals from the knife sensor to produce feed control signals for the respective web. These control signals may be applied to brakes associated with the web supply reels to vary the tension in each web; alternatively one web may be controlled by using the control signals to vary the speed ratio between the knife and pull rolls feeding the webs to the knife.