Abstract: The slitter-scorer machine includes a suction unit for removing trims cut by the cutting blades. The suction unit in turn includes a first pair of suction nozzles associated with a first set of cutting tools, and a second pair of suction nozzles, associated with a second set of cutting tools. The first pair of suction nozzles is adapted to suck trims generated by the first set of cutting tools and the second pair of suction nozzles is adapted to suck trims generated by the second set of cutting tools.

Abstract: A cutting wheel is provided for cutting a liquid crystal panel. The cutting wheel is disc shaped and includes a plurality of grooves disposed along an edge of the cutting wheel and cutting portions formed between the grooves. A pattern having a predetermined period is formed by multiple grooves and cutting portions. The grooves in each period have the same or different widths and depths and the cutting portions have probe shapes or cutting blades of different lengths. The cutting wheel is applied to dummy areas of the glass substrates forming the liquid crystal panel.

Abstract: An opening cutter assembly for forming an opening perforation line in a plastic packaging film by rolling the plastic packaging film between the opening cutter assembly and an anvil roll of a rolling mechanism when the plastic packaging film is fed through the rolling mechanism. The opening cutter assembly includes an opening cutter shaft, at least one opening cutter seat, and at least one opening cutter blade. The opening cutter shaft has at least one containing compartment. The opening cutter seat is installed in and engaged to the containing compartment by a cutter seat mounting mechanism. The opening cutter blade is mounted to each opening cutter seat. When the opening cutter blade gets worn out due to long term operation and must be replaced, simply dismounting the cutter seat mounting mechanism allows the opening cutter seat and the opening cutter blade to be removed from the containing compartment.

Abstract: A machine for slitting plane packaging blanks includes at least one rotatable slitting roller with at least one knife for producing a front edge slit and/or a rear edge slit in each packaging blank. The knife is sector-shaped, and defined by two knife end edges. A first knife portion adjacent a first knife end edge is adapted to cut the front edge slit out in a front edge of the blank. A second knife portion adjacent a second knife end edge is adapted to cut a rear edge slit out in a rear edge of the blank and rearwards through the rear edge while the blank is advanced through the machine at a uniform speed.

Abstract: A system and method for cutting shingles according to which a plurality of cutting blades are mounted on the outer circumference of a cutting cylinder, and the cylinder is rotated with the blades engaging the sheet while effecting relative translational movement between the cylinder and the sheet so that shingles are cut from the sheet upon one rotation of the cylinder.

Abstract: An opening cutter assembly forms an opening perforation line in a plastic packaging film by rolling the plastic packaging film between the opening cutter assembly and an anvil roll of a rolling mechanism for having an opening perforation line on a plastic packaging film when the plastic packaging film is fed through the rolling mechanism. The opening cutter assembly includes an opening cutter shaft, at least one opening cutter seat, and at least one opening cutter blade. The opening cutter shaft has at least one containing compartment formed. The opening cutter seat is installed in and engaged to the containing compartment of the opening cutter shaft by a cutter seat mounting mechanism. The opening cutter blade is mounted to each opening cutter seat.

Abstract: The present invention provides a cutting tool which can easily prevent damage from occurring at the slit end formed on a sheet material, such as a corrugated sheet or the like.

Abstract: A device for the manufacture of an absorbent product including a rotatable slitting tool having an extent in a radial direction and an extent in an axial direction perpendicular to the radial direction. The slitting tool includes a cutting part including a plurality of cutting edges having a first radius and intermediate parts situated between the cutting edges at a smaller distance from the axial center line of the slitting tool than the cutting edges. The device includes a force-absorbing means arranged to absorb forces from an abutment roller at least when the intermediate parts in the slitting tool pass the abutment roller.

Abstract: An arrangement for covering a flat lying blank, preferably made of paperboard, with a cover, as is in particular applicable in the manufacture of book cases. The arrangement comprises fixing means for simple coupling of a circular cutting device. This circular cutting device comprises transport means for direct feeding of the cut blank to the arrangement.

Abstract: Wiping material dispenser apparatus includes a basic housing that receives an articulated cover and a cartridge including two transverse flanges. An upper part of the flanges receives a roll of material and a lower part thereof receives a first blade-holder drum and a second return drum, the drums receiving crown wheels for the connection thereof. The return drum receives a third crown wheel that co-operates with the drum rotation actuation mechanism which includes a fixed cam. The blade-holder arm is provided with transmission means that involve the use of a mobile cam which actuates the cutting blade. The fixed and mobile cams co-operate with one another, defining the trajectory of the cutting blade.

Abstract: A combined cutter and slitter module for a wallpaper printer, the combined cutter and slitter module comprising: at least two end plates, a media web able to pass between the at least two end plates; at least two slitter rollers rotatably held between the at least two end plates, each of the slitter rollers provided with at least one cutting disk, each of the cutting disks located at different positions along the length of the at least two slitter rollers; a guide roller positioned to selectively engage with at least one cutting disk, the media web able to be passed between the guide roller and the at least one cutting disk; a drive motor to rotate the guide roller; a first actuating motor to selectively rotate the at least two slitter rollers and thereby selectively engage at least one cutting disk with the guide roller; a transverse cutter positioned along at least the width of the media web; and, a second actuating motor to force the transverse cutter against the media web.

Abstract: A method for expelling air out of mailpieces includes the steps of creating a stack of the mailpieces; cutting an opening in at least some of the mailpieces; jogging the stack of mailpieces; and subjecting the stack of mailpieces to at least one compression/decompression cycle during the jogging step thereby expelling air out of the at least some of the mailpieces through their corresponding openings.

Abstract: A device for perforating material webs by perforating tools accommodated on perforating cylinders and capable of producing perforations on copies in an exactly correct position with respect to cross-folds formed in the copies, the perforation position being adjustable during machine operation, the perforating tools being cooperatively related with associated perforating strips for producing transverse or cross-perforations, includes at least one perforating bar disposed coaxially with at least one of the perforating cylinders, the perforating tools and the perforating strips being accommodated on at least one of the perforating bars, the at least one of the perforating cylinders being adjustable relative to at least another of the perforating cylinders; a folder including the perforating device; and a pin-less folder including the perforating device.

Abstract: This device comprises a frame carrying means for conveying blanks according to a substantially plane path and two parallel shafts (10, 11), which are mounted so as to be rotatable on both sides of the plane of said path and comprising tool supports (19a, 19b, 20a, 20b) for inducing a shearing between the adjacent edges of a cutting line during their displacement, in order to break nicks on the cutting line. Each parallel shaft (10, 11) comprises at least one tool support (19a, 19b, 20a, 20b) for connecting the shearing tools to said respective shafts (10, 11) and means for angularly (10a, 11a) and longitudinally positioning these tool supports (19a, 19b, 20a, 20b) on said respective shafts (10, 11).

Abstract: The invention relates to a perforating, grooving or cutting device for a multicolor or single-color sheet-fed rotary press (1) comprising printing and/or varnishing groups (2), at least one of which has a rubber cylinder (3) with a holding system (14) for a blanket, as well as an associated counter-pressure cylinder (4). According to the invention, a rectangular base plate (13) is provided, which is made from a flexible and shape-retaining material over which it is possible to glue embossed treatment profiles (29, 37) used as perforating and/or grooving and/or punching profiles corresponding to perforating and/or grooving and/or punching shapes which can be predetermined. Furthermore, at least two fastening strips (17, 18) are provided for detachably attaching the punch foil to opposed marginal areas in the stretched state.

Abstract: A die-cutting device is herein disclosed for performing slots perpendicular to the feeding direction of paperboard sheets used for making boxes, which is mounted on a supporting framework which can be driven in a cross direction with respect to the longitudinal feeding direction of the paperboard sheets.

Abstract: An automatic machine for slitting and creasing paperboard sheets comprises, on a bearing framework, a plurality of assemblies for slitting and driving the paperboard sheets to be processed, the slitting and driving assembly including, each, slitting heads and driving heads, the slitting heads being coaxial with the driving heads and driven by a drive device which is independent from the drive device driving the driving heads.

Abstract: In order to provide a cutting device, comprising a machine frame, an anvil roller which is mounted for rotation on the machine frame and a cutting tool which is mounted for rotation on the machine frame, wherein the cutting tool has a cutting edge cooperating with anvil surfaces of the anvil roller, with which the springing away on account of lateral cutting forces is minimized it is provided for the cutting tool to be biased essentially parallel to its axis of rotation.

Abstract: In order to achieve speed up of the piercing operation to form elongated forms in a thin sheet whose length is greater than the thickness and width thereof, a piercing apparatus is provided with an upper roller die having a first cutter roller held between press rollers so that the first cutter roller protrudes at the outer peripheral portion thereof, from the outer peripheral surfaces of the press rollers, a lower roller die having recesses between two second cutter rollers and engaging with the outer peripheral portion of the first cutter roller. The thin sheet is continuously fed in the lengthwise direction thereof into the engagement portion between the upper and lower dies. When a sliding cutter is engaged in the recesses formed on the first cutter roller, the thin sheet passing through the engagement portion is cut to form elongated holes.

Abstract: An expandable metal product for use in extinguishing fires and in the prevention of or protection against explosions. The product is a continuous sheet of magnesium alloy foil having discontinuous slits in spaced apart lines parallel to each other but transverse to the longitudinal dimension of the sheet. The invention is also directed to the expanded form of the product, either in sheets which may be used for preventing fires or explosion or in the form of shaped ellipsoids for use in a passive inerting system for fuel tanks.

Abstract: A multi-blade perforation assembly having either rotary or straight blades provides adjustable, small cut and tie ratios for multi-ply forms without diminishing the quality or reliability of the forms.

Abstract: A method and apparatus are provided for producing a signature having a backbone fold defining a closed end and an intermediate fold transverse to the backbone fold using a reduced width of paper coming from a roll. The method and apparatus reduce gusset wrinkles adjacent the folds by slitting ribbons formed from the paper web along a trail edge and a lead edge of a closed end forming the signature. Preferably, the slitting operation leaves an uncut portion of the closed end of the signature extending across the intermediate fold from a side edge to the trail edge to stabilize the ribbon at the area to receive the intermediate fold. The lead edge and trail edge are slit very substantially to expose long areas of fibers for gluing to form a book backbone.

Abstract: A durable male slotting blade for creating cleanly sheared slots in corrugated cardboard. The male slotting blade is adapted to be mounted to a slotter head of a cardboard box fabricating machine, and is provided with a cutting surface having first and second sets of serrations. A first set of serrations is provided on one side of the cutting surface while a second set of serrations is provided on an opposing side of the cutting surface with a valley formed therebetween. The first set of serrations are provided offset from, or out-of-phase with, the second set of serrations to provide for a cleaner cut with less frayed edges. Each of the serrations includes a peak and a valley machined not only into the sides of the cutting surface but also down into the valley formed in the cutting surface such that as the blade encounters abrasive recycled fibers, and is worn away, a new cutting surface is repetitively provided to thereby result in a longer lasting and more durable blade.

Abstract: A device for making cuts in the direction of the advance of pieces of thin material, for example in slips of paper along the path on which they are fed, includes a cutter carrying drum (1) and a cutting bed drum (2) rotating in opposite directions to each other. The drum (1) carries at least one peripheral cutter (3, 3', 3") whose cutting edge (103) is orientated in the direction of advance of the pieces of material and is curved coaxially with the drum (1), projecting radially beyond it. The cutter (3, 3', 3") is fixed on the cutter carrying drum (1) by a removable (5, 7) base (4, 4', 4") which has an intrinsic elasticity provided by slits such that it provides a certain spring support of the cutter (3, 3', 3") alternatively and in combination in the radial direction and in the direction of oscillation about an axis transverse to the cutting edge (103) of the cutter (3, 3', 3"), in particular substantially parallel to the axis of the drum (1).

Abstract: An improved slotter wheel apparatus (10) designed for use in the formation of box blanks is disclosed. The apparatus (10) includes a rotatable drive shaft (22), a slotter blade (16) supported on the drive shaft (22) and blade coupling structure (20). The slotter blade coupling structure (20) is operable for selectively coupling the slotter blade (16) with the rotating drive shaft (22) so that the slotter blade (16) is rotated by the shaft (22) and slots blanks passing under the apparatus (10). The slotter blade coupling structure (20) is also operable for selectively decoupling the slotter blade (16) from the drive shaft (22) to prevent the slotter blade (16) from slotting blanks passing under the apparatus (10). In a preferred construction of the invention, the slotter blade coupling structure (20) includes a clutch assembly (76), a brake assembly (78), and a controller (82) for controlling the operation of the clutch and brake assemblies.

Abstract: A machine for forming a packing material by positioning a paper material on or adjacent to a die member and forcing a multitude of cutting blades completely through the paper material and into the die member at a multitude of spaced apart locations to form a multitude of slits in the paper material. These slits allow the paper material to be pulled or expanded into a three dimensional shape that is both load bearing and resilient. In a first embodiment, the forming of the packing material is carried out in a flat die press, including upper and lower die members and with the cutting blades secured to the upper die member. In a second embodiment, the forming of the packing material is carried out in a rotary press including upper and lower rotatable rollers and with the cutting blades secured to the upper roller.

Abstract: Attachments for use with existing cylinders or shafts in printing press equipment. The attachments are used to mount a scoring blade, a perforating blade or an anvil to the cylinder or shaft. The blade or the anvil is separably mounted to the attachment and to the cylinder for easy assembly and disassembly.

Abstract: A slitting assembly for producing a plurality of "interrupted cut" slits in a large sheet of sport card photos includes a horizontal support track carrying a plurality of individual upper slitting assemblies each including a freely rotatable upper hub, an upper blade concentrically attached to the upper hub, a resilient band circumferentially disposed on the upper hub to frictionally engage the top surface of the sheet being slit, and an upper blade biasing element to resiliently urge an edge of the upper blade against an edge of the corresponding lower blade. The upper blades are precisely parallel to the lower blades to avoid interference with notches provided in the lower blades to interrupt the slits being made. The locations of the notches are selected to compensate for slippage resulting from the frictional engagement.

Abstract: A slitting machine including a first slitting stage for producing a plurality of interrupted cut slits in an advancing sheet having a leading edge and a trailing edge includes a drive pulley, a driven pulley, and a belt engaging the drive pulley and the driven pulley to provide a power path and a return path between the drive pulley and the driven pulley. The slitting machine also includes a mechanism translating rotation of the driven pulley to drive an upper slitting assembly and notched blades of a lower slitting assembly in synchronization with the advancing of the sheet by a sheet feeder.

Abstract: Improved slotter wheel apparatus (20) for use in the formation of box blanks is provided which includes a rotatable wheel (22) supporting a shiftable blade holder (24) and a slotting blade (26), with cooperating cam track (174) and follower (86) structure for selective shifting of blade (26) between an extended slotting position and a retracted blank-clearing position. An activation/deactivation assembly (30) allows the operator to separate cam track (174) from follower (88), thereby permitting use of apparatus (20) as a conventional, high speed, fixed blade slotter. A shock absorbing assembly (27) including a bridge piece (138) operably coupled with blade holder (24) and resilient pads (152, 154) serve to absorb potentially destructive mechanical loads experienced during outward shifting of the blade holder (24) and blade (26).

Abstract: In order to eliminate gusset wrinkles in a closed end signature, a unique new and improved method and apparatus are disclosed. The method and apparatus contemplate printing a plurality of webs on presses to provide ribbons to be utilized in forming the signatures, delivering the ribbons after the webs have been printed on the presses to a common point for ribbon merger, and merging the ribbons at the common point to provide a composite to be utilized in forming the signatures. They further include folding the composite in order to form backbone folds defining the closed ends of the signatures, cutting the composite into individual ones of the signatures before or after folding to form the backbone folds, and again folding the individual ones of the signatures cut from the composite in order to form intermediate folds.

Abstract: A perforating blade and signature having a unitary blade (12) that is very narrow in width in proportion to its length, with a cutting edge (16) along one longitudinal side. The cutting edge (16) comprises a combination of a number of spaced-apart straight (12) and angled (20) sections arranged so that the angled sections (20) angle inwardly toward a center point (18) on the perforating blade and along a single side of the cutting edge only. In one embodiment the pattern starts with a single long cutting tooth in the center (18) of the blade followed outwardly from the center on both sides with a repeating pattern of three angled teeth followed by a short straight tooth and so forth. The angled teeth (20) are all angled to the same side of the blade so that the resulting fold line (26) has cuts only on one side (29) of the fold line. The angled cuts result in ties (28) that twist easily, and that, therefore, result in fold lines (26) that fold cleanly without gusseting or binding.

Abstract: The present invention provides a sheet post-treatment apparatus in which a tab sheet is used to sort sheet materials, comprising a tab trimmer for successively cutting each of plural tab forming sheet materials being supplied, to form tabs in the sheet materials at offset tab positions. The tab trimmer is in modular form which can be removed from the apparatus and replaced with another modular tab trimmer.

Abstract: Improved bladders (174-178) having a cross-sectional U-shape are provided for a rotatable slotter head assembly (120) of the type used in the slotting of box blanks is provided which includes mechanism (128) permitting rapid and easy alteration of the circumferential position of the cutting knives (126) carried by the assembly (120). Preferably, the assembly (120) includes a rotatable body (124) provided with an elongated, peripheral, knife-receiving slot (168) defined by fixed backing plates (158 ) and laterally shiftable locking plates (188). The selectively inflatable resilient bladders (174-178) are carried by the head assembly (120) and, when inflated, shift the associated movable locking plates (188) against the cutting knives (126), thereby firmly locking the latter in place. When knife adjustment is desired, one or more of the appropriate bladders (174-178) are deflated, the knives (126) are shifted as desired, and the bladders (174-178) are reinflated.

Abstract: A process for forming a packing material, comprising positioning a paper material on or adjacent to a die member, and forcing a multitude of cutting blades completely through the paper material and .into that die member at a multitude of spaced apart locations to form a multitude of slits in the paper material. These slits allow the paper material to be pulled or expanded into a three-dimensional shape that is both load bearing and resilient. In a first embodiment, the process is carried out in a flat die press, including upper and lower die members and with the cutting blades secured to the upper die member. In a second embodiment, the process is carried out in a rotary press including upper and lower rotatable rollers and with the cutting blades secured to the upper roller.

Abstract: An improved slotter wheel mechanism (30) designed for use in the formation of box blanks is provided which includes a rotatable wheel assembly (32) supporting one or more slotter blades (34); the blades (34) are coupled to the wheel by means (36) permitting shifting of the blades (34) during rotation of the wheel assembly (32) between an extended slotting position and a retracted blank-clearing position. A cam assembly (406) presents a shiftable cam portion (424) that can be shifted to select a blade extended or retracted position for blade sections (304, 306, and 326) which are interconnected by a respective pivot couplings (332 and 334). The assembly (406) further includes a locking link assembly (448) for locking the blade holder (438) and thereby the blades (442 and 448a, 440b) in the selected position during rotation through the bottom portion of the arc of travel.

Abstract: Multiple-station article processing apparatus (10) is provided which includes an adjustable processing station (14), a drive train (20), and a selectively operable drive train brake assembly (22) operable during adjustment of station (14). The preferred apparatus (10) is designed for fabrication of box blanks, and to this end includes an infeed assembly (12) for sequentially feeding paperboard sheets into the downstream scoring/slotting station where the sheets are scored and slotted to yield finished box blanks. During makeready adjustments when the position of the knives (66, 68) of the station (14) are changed, the braking assembly (22) is actuated to prevent unintended rotation of the drive train (20), which can result in changing the properly timed relationship of the stations within apparatus (10).

Abstract: An improved slotter wheel mechanism (30) designed for use in the formation of box blanks is provided which includes a rotatable wheel assembly (32) supporting one or more slotter blades (34); the blades (34) are coupled to the wheel by means (36) permitting shifting of the blades (34) during rotation of the wheel assembly (32) between an extended slotting position and a retracted blank-clearing position. In one embodiment, a slotter wheel (222) is equipped with a plurality of spiders (232) operatively secured to corresponding blade holders (246). As the wheel (222) rotates, the spiders (232) encounter strategically located members (294, 294a, 296 and 296a) serving to successively rotate the spiders (232), thus moving the blade holders (246) and blades (256).

Abstract: Box blank-forming apparatus (60) is provided which includes a feeder assembly (62) and a scoring/slotting assembly (64) each provided with adjustment structure (62a, 64a) to facilitate makeready adjustment of the apparatus (60) between production runs. The feeder assembly (62) preferably includes a reciprocal pusher element (170) operable to successively engage sheets (30) to be formed into box blanks (36). The element (170) is supported by a pair of elongated, threaded, axially rotatable, fore and aft translatable positioning screws (146, 148), so that upon rotation of the screws (146, 148), a reference position of the pusher element (170) may be varied. Adjustment of the assembly (64) is accomplished by means of compensators (292, 294) which are respectively coupled to associated slotter wheel and scoring wheel shafts (288, 286).

Abstract: An improved slotter wheel mechanism designed for use in the formation of box blanks is provided which includes a rotatable wheel assembly supporting one or more slotter blades; the blades are coupled to the wheel by means permitting shifting of the blades during rotation of the wheel assembly between an extended slotting position and a retracted blank-clearing position. In one embodiment, the blades are supported on respective blade holders each having a cam secured thereto. A stationary yoke plate adjacent the wheel assembly supports a pair of inner and outer cam grooves adapted to receive the blade holder cams. A shiftable, grooved cam switch is operatively interposed in the cam arrangement for selectively directing the blade holder cams into one or the other of the cam grooves, thereby camming the associated blade holders and blades between their respective positions.

Abstract: Apparatus for cross cutting and/or perforating of a web. The apparatus performs two consecutive partial cuts and, provides for positive guidance of a partially cut web. This is accomplished by first and second cutting blade rollers, arranged with one common counter cylinder and guided by groups of belts passing through breaks in the blades. The breaks of the two blades are laterally offset relative to each other, and the belts are pressed against the counter cylinder to convey the web. This eliminates the need for one counter cylinder and one pair of pull rollers, it decreases the danger of web tear and eliminates the web stretching and the accompanying offset of the two partial cuts.

Abstract: Box blank-forming apparatus (60) is provided which includes a feeder assembly (62) and a scoring/slotting assembly (64) each provided with adjustment structure (62a, 64a) to facilitate makeready adjustment of the apparatus (60) between production runs. The feeder assembly (62) preferably includes a reciprocal pusher element (170) operable to successively engage sheets (30) to be formed into box blanks (36). The element (170) is supported by a pair of elongated, threaded, axially rotatable, fore and aft translatable positioning screws (146, 148), so that upon rotation of the screws (146, 148), a reference position of the pusher element (170) may be varied. Adjustment of the assembly (64) is accomplished by means of compensators (292, 294) which are respectively coupled to associated slotter wheel and scoring wheel shafts (288, 286).

Abstract: A rotatable slotter head assembly (20) of the type used in the slotting of box blanks is provided which includes mechanism (28) permitting rapid and easy alteration of the circumferential position of the cutting knives, (26) carried by the assembly (20). Preferably, the assembly (20) includes a rotatable body (24) provided with an elongated, peripheral, knife-receiving slot (68) defined by fixed backing plates (58) and laterally shiftable locking plates (86-96). A plurality of selectively inflatable resilient bladders (74-78) are carried by the head assembly (20) and, when inflated, shift the associated movable locking plates (86-96) against the cutting knives (26), thereby firmly locking the latter in place. When knives adjustment is desired, one or more of the appropriate bladders (74-78) are deflated, the knives (26) are shifted as desired, and the bladders (74-78) are reinflated.

Abstract: A rotary cutter knife for use in a slotting or slitting head. The cutter knife is an assembly of an arc-shaped holder with one or more cutting elements attached in a manner such that the elements are replaceable and circumferentially adjustable.

Abstract: An attachment for use with existing cylinders in printing press equipment. The existing cylinder is machined to have an an annular groove around the center portion thereof. The attachment is mounted in the groove such that a scorer/perforator blade extends beyond the surface of the cylinder.

Abstract: A web scoring and/or perforating apparatus for signature folding machines or the like including first and second rollers. Each roller has a scoring or perforating blade portion and a resilient roller portion. The rollers are mounted, preferably, on existing, rotatably driven nip roller shafts, upstream of web folding stages in web handling systems. The blade portion of one roller is arranged to interact with the resilient portion of the other roller. Arc lengths of the scoring or perforating roller blade portions and the resilient roller portions are substantially equal to each other and to the fold line of a signature. The rollers, between which the web is advanced, are positioned and oriented to score or perforate portions of the web in alternating directions which correspond to the direction of folding of each layer of the web.

Abstract: A precrush tool immediately precedes a slotting blade in a slotting tool assembly. The slotting blade is mounted in the same way as a conventional slotting blade with the exception that the top is profiled to give gradual crushing during rotation. The tool's area gets successively larger to the point that the top land equals the width of the slotter blade and its O.D. when mounted is effectively the pitch circle of the tool assembly. This design allows for the air to be removed from the board gradually and produces a sharp clean cut by the slotter.

Abstract: A circular tool arrangement which includes a circular rim having an inner rim with the circular rim having a plurality of circular seats arranged on a first radius and the inner rim having a plurality of circular seats arranged on a second radius. Tools shaped as either cutting members or creasing members are arranged on the rim and have projections which are engaged in one of the groups of seats and each of the arrangements has a ring provided with concentric grooves for receiving projections on the side of the tool facing the ring. The rings are moved in the clamping engagement by a spring arrangement which can be released by applying axial pressure on the heads of the spring arrangement to shift the ring from a clamping position to an open position to enable removal of the tools.

Abstract: A cutting device for a board machine is disclosed. The board machine includes at least two parallel shafts. One shaft is mounted by eccentric assemblies which vary the center line of rotation of the shaft. A first cutter head is mounted on that shaft and a mating cutter head is mounted on the other shaft. The first cutter head includes a first cylindrical member having external teeth which mate with a second cylindrical member having internal teeth. The mating cutter head mounts a slotting knife and a cross knife, while the first cutter head mounts an adjustable knife. The eccentric assemblies eccentrically move the shaft to reorientate the first and second cylindrical members to move the adjustable knife relative to the slotting knife to cut or score boards of different thickness while maintaining a desired spacing between the cross knife and an anvil surface defined by the second member.

Abstract: An improved perforating strip for use on printing presses formed of an elongated thin metal strip having a base portion of generally rectangular cross-section with flat upper and lower surfaces, the strip having integral upstanding teeth adjacent one edge, the edge of the strip opposite the teeth being curved from the lower surface to the upper surface providing a rounded edge which serves to substantially decrease the impression made in paper against which the strip is pressed, and in one embodiment the strip having an integral anchor portion downwardly extending from the edge opposite the teeth to penetrate the surface of a printing press impression cylinder.