Abstract: A corrugated paperboard box making machine, which includes: a slotter for slotting a corrugated paperboard sheet to form slots; a die-cutter disposed downstream of the slotter, the die-cutter including a die cylinder with a punching die and an anvil cylinder; a cutting blade for cutting, in cooperation with the anvil cylinder, the corrugated paperboard sheet slotted by the slotter, into two small-size corrugated paperboard sheets, along a direction perpendicular to the conveyance direction; and a displacement mechanism for displacing the cutting blade as to allow the cutting blade to be selectively set in a cutting position and a non-cutting position.

Abstract: An apparatus configured to cooperate with a rotating anvil to cut corrugated board comprises a rotary cutting die configured to rotate in one direction and to cooperate with the anvil to cut corrugated board. The cutting die includes a base and at least one scrap cutting blade and a scrap stripper that comprises one or more fingers that project from the base at an incline and which is slanted forwardly in the direction of rotation of the cutting die for stripping cut scrap pieces of corrugated board from the blade.

Abstract: A scoring or cutting assembly forms a part of a cutting die used to score and cut corrugated board. The scoring or cutting assembly includes a cutting or scoring rule secured to a die board. First and second elastomers are secured on the die board such that the scoring or cutting rule extends between the elastomers and there is defined a space between the scoring or cutting rule in each of the elastomers. There is also provided a pair of retainers, each retainer being secured to the die board adjacent an outboard side of the elastomers. During a cutting or scoring operation, the elastomers engage the corrugated board on opposite sides of the scoring or cutting rule and apply and inward force to the corrugated board towards the scoring or cutting rule. This causes the corrugated board to resist cracking on opposite sides of the scoring or cutting rule.

Abstract: A motorized head for applying fiber composite material to an application surface includes a drive roll assembly for applying fiber composite material to an application surface. The drive roll assembly includes a drive roll and a backup roll and a drive roll nip formed between the drive roll and the backup roll. At least one cutter is mounted on the drive roll for cutting fiber composite material, and an ejector mechanism is mounted on the drive roll behind the cutter mechanism. The ejector mechanism positively displaces the leading end of the cut tow material away from the surface of the drive roll to ensure that the cut tow material does not misfeed as it approaches the fiber path chute downstream from the cutter.

Abstract: The provision of a hardened elevated surface within the a inside die cutting area of a cutting rule to limit and control the extent to which die cut scrap processed corrugated fiberboard sheet material can position itself within the area within the cutting rule before ejection limit the tendency for instability within the cutting rule after the die cut is achieved and to better control the ejection of the scrap processed corrugated fiberboard sheet material to better eliminate unwanted scrap downstream of the die cutting process. Eliminated scrap reduces malfunctions in further processing and helps to eliminate health and contamination hazards in the finished corrugated fiberboard sheet product.

Abstract: It is intended to improve work efficiency by eliminating the work of attaching and removing push rods during installing and dismounting the a blade mount and also to reduce abrasion of the push rods for pushing punching scrap out of a punching blade. The first push rods 18 are inserted movably in the first through-holes 16 formed in the knife cylinder and the second push rods 36 are inserted movably in the second through-holes 34 formed in the blade mount to permit the second push rods 36 to be abutted on the first push rods 18. A scrap push lever 30 is mounted on the outer end of the second push rod 36 to push out the punching scrap a and an eccentric cylinder 14 is provided inside of the knife cylinder 10 to push the first push rod 18 outward when pushing out the punching scrap a. The stroke of the first push rod 18 is controlled so that the outer end 18a of the first push rod 18 does not project from the outer periphery 10a of the knife cylinder.

Abstract: A trim ejector for ejecting the trim produced by a steel rule of a rotary steel rule die apparatus includes a die cylinder having a die board provided with the rule and an anvil roll positioned parallel to the die cylinder to define a sheet receiving gap therebetween. The trim ejector has a flexible body defining a trim-ejecting surface extending between an ejecting edge and a stem portion, an anchor portion connected to the stem portion of the flexible body for securing the flexible body to the die board to position the ejecting edge of the flexible body adjacent and parallel to the rule, and a compressible biasing member secured to the flexible body on a side opposite the trim-ejecting surface. The compressible biasing member forces the flexible body to a neutral position, corresponding to no tension being applied to the stem portion, when the flexible body is moved away from the neutral position under passage of a sheet in a sheet receiving gap.

Abstract: Embodiments of the present disclosure generally provide a cutting die system. The cutting die system includes a substrate, at least one blade, and an ejector coupled to the substrate. The ejector includes a compressible portion having a top surface and a bottom surface opposite the top surface. The bottom surface is coupled to the substrate and a protective layer is cured to the top surface. A method of die cutting a blank according to an embodiment of the present disclosure includes directing a blank between a cutting die and an anvil, the cutting die comprising a substrate. An ejector coupled to the substrate is compressed between the cutting die and the blank. A scrap piece is cut from the blank as it passes between the cutting die and the anvil, and the scrap piece is ejected by releasing the compressed ejector.

Abstract: Substrate punch assembly, comprising a punch for perforating a substrate, a resilient element provided next to the punch, and a die arranged opposite to the punch for pressing against the substrate in the direction of the punch during a punch action, wherein the resilient element is configured to at least partly move with respect to the punch for pushing the substrate away from the punch when the punch moves away from the die.

Abstract: Chopping wheel (19), intended for chopping continuous strands into sections of predetermined length, which has a backup component consisting of a rotating drum equipped with blades (22) arranged perpendicular to its periphery and, between these blades (22), components that, under the effect of the centrifugal force, are supposed to ensure the compression of strands (11) against the surface of a backup drum, and then the chopping of the strands into sections (14), and the ejection of the chopped sections, the components ensuring the compression of the strands consisting of fins connected to deformable ring (26, 27a, 27b) arranged under the base of blades (22) and whose axis coincides with the axis of rotation of said chopping wheel (19), is characterized by the fact that on each side, deformable ring (26, 27a, 27b) has a parallel straight side extending from the base of deformable ring (26, 27a, 27b) to the base of the fins.

Abstract: The present invention entails a rotary cutting die having one or more scrap strippers secured thereon for stripping scrap corrugated board pieces from adjacently disposed scrap cutting blades during a corrugated board die cutting operation. Each scrap stripper comprises a resilient member having a base and an angled flexible finger extending from the base so as to define an open area between the angled finger and the base. During a die cutting operation, the entire scrap stripper including the angled finger and base is compressed as the stripper passes through the nip defined between the cutting die and an associated anvil. As the stripper exits the nip, it expands causing the underlying scrap piece to be stripped from adjacently disposed blades. In addition, the angled finger extending from the base extends outwardly and engages the underlying cut piece of scrap and pushes or urges the cut scrap against the underlying anvil.

Abstract: Leading and trailing edge stitch tab scrap strippers utilize pivot arms which are secured to die block bodies for pivotable motion intermediate their two ends. One end of each arm is adapted to engage a stitch tab scrap portion to be stripped and to effect the removal of the tab scrap from a box blank from which it has been cut. A biasing force is applied against a second end of the pivot arm. The pivot arm is caused to pivot in response to the rotation of an upper male slotting head and a lower die cutting anvil. This pivotal movement is effective to strip or to eject the severed stitch tab scrap.

Abstract: A rotary cutting die apparatus for cutting corrugated board and trimming an outside trim piece from the corrugated board. The rotary cutting die apparatus includes a die cylinder, a cutting die mounted to the die cylinder, and an anvil cylinder disposed adjacent the die cylinder. Mounted on the cutting die is at least one trim cutting blade for trimming an outside portion from a corrugated board passing between the die cylinder and the rotary anvil. Mounted on the cutting die outside of the trim blade is one or more trim strippers or devices for engaging the cut trim pieces and moving the cut trim pieces away from the cutting die and generally separating them from the finished corrugated board product produced by the die cutting apparatus. In the case of the embodiment illustrated herein, each trim stripper or device includes a base secured to the cutting die and an angled elastomer finger extending from the base.

Abstract: A method and apparatus for controlling the coherence of a high-pressure fluid jet directed toward a selected surface. In one embodiment, the coherence is controlled by manipulating a turbulence level of the fluid forming the fluid jet. The turbulence level can be manipulated upstream or downstream of a nozzle orifice through which the fluid passes. For example, in one embodiment, the fluid is a first fluid and a secondary fluid is entrained with the first fluid. The resulting fluid jet, which includes both the primary and secondary fluids, can be directed toward the selected surface so as to cut, mill, roughen, peen, or otherwise treat the selected surface. The characteristics of the secondary fluid can be selected to either increase or decrease the coherence of the fluid jet. In other embodiments, turbulence generators, such as inverted conical channels, upstream orifices, protrusions and other devices can be positioned upstream of the nozzle orifice to control the coherence of the resulting fluid jet.

Abstract: The present invention is related to an apparatus for cutting webs of material (1) and includes a cutting cylinder (8) having at least one knife assembly (12, 13) assigned to its circumference (9). A supporting element (23) is assigned to said cutting cylinder (8) forming a cutting region (3) there between and a transport belt (20) having cut rubber portions (20.1, 20.2, 20.3) integrated therein is assigned to said supporting element (23).

Abstract: A three hole punch system is for use in an image capturing device. The three hole punch system uses elastomeric rollers that punch holes in the edge of a sheet as it passes between two rollers. If desired, the rollers can act as a transport for the sheet without punching holes in the sheet. After the holes are punched, the resultant slugs are pushed back into the holes and the sheet is retrieved by the operator.

Abstract: A method and an apparatus for cutting a wafer from a crystalline ingot, by directing a stream or streams of etching gas at the crystalline ingot in a vacuum. Waste in cutting can be greatly minimized and the work environment can also be kept clean. Further, excellent surface smoothness can be realized on the cut wafers.

Abstract: A method and an apparatus for producing a wafer from a crystalline ingot, wherein the method supplies an etching gas, having a high etching property for at least one constituent of the crystalline ingot, in a state of a molecular beam stream on a predetermined part of the crystalline ingot to be processed, volatilizing the predetermined part gradually from the ingot, and then removing the predetermined part entirely so as to cut the wafer from the ingot. According to the method, waste in cutting can be greatly minimized and the work environment can also be kept clean. Further, excellent surface smoothness can be realized on the cut wafers.

Abstract: A paper machine has a high pressure liquid pump for use with a liquid slitter for slitting a fiber material web. The high pressure liquid pump includes a pump shell having an axis of rotation and an annular smooth inwardly facing surface. The inwardly facing surface is configured for carrying a film of liquid thereon. A hydraulic shoe having an outer convexly curved working face is in close running engagement with the inwardly facing surface. A pivotal arm is connected with the shoe and positions the shoe relative to the inwardly facing surface. The arm is movable toward and away from the inwardly facing surface. A hydraulic pressure member is engaged with the arm for urging the shoe toward the inwardly facing surface dependent upon a hydraulic pressure therein.

Abstract: A cutting die system having an improved waste or scrap removal system is provided. Curved edge patterns are cut into the cutting die plate within the parameters of the cutting edge. These partial cutouts having curved edges are provided so that when the cutting die is mounted to the die cylinder, the bending of the cutting die to fit the curvature of the die cylinder causes the cut out shape to pop up. The direction of the pop-up cut out shape is complementary to the relative direction of rotation of the cutting die and the height of the projections remains below the cutting edge height. When the pop-up cut out shape comes in contact with the waste or scrap material, the waste or scrap material is pushed outward and away from the direction of the die cylinder.

Abstract: A dough-processing system for dividing a dough sheet into multiple separate portions and transporting each portion in a predetermined direction. A rotary cutter, having a multiplicity of cutting dies affixed thereon, divides the dough sheet. The cutting dies have an exterior peripheral cutting edge for cutting the linear dough sheet into two or more linear portions for further processing on standard conveyor systems and an interior peripheral cutting edge for cutting an interior portion from the snack-piece dough. The rotary cutter includes an internal helical auger rigidly affixed to an external cylindrical mandrill having first and second ends and having a multiplicity of cutting dies affixed thereon. The rotary cutter has an ever-increasing diameter funnel path for transporting the interior cut portion of the snack-piece dough into the interior of the rotary cutter and thereupon the helical auger transports it out to the side of the rotary cutter.

Abstract: A web cutter includes a knife roll located above an anvil roll, a web infeed conveyor for moving a continuous web to be severed to the nip between the rolls and a segment discharge conveyor for removing segments cut from the web. The roll includes a plurality of fixed cutting knives and the anvil roll includes a plurality of fixed anvils such that rotation of the rolls brings each knife into engagement with an anvil to sever the web. Lift plates on the anvil roll are located immediately upstream from each anvil to raise the severed lead end of the web above the anvil in order to assure proper feeding to the discharge conveyor.

Abstract: A rotary cutter is disclosed for repeatedly cutting web printed sheet material with a printed repeat portion of finite length thereon which includes a cutting cylinder adapted for rotation in a manner such that the web printed sheet material passes thereby A cutting knife extends generally along the length of the cylinder on the outer surface for periodic engagement with a backup support cylinder for cutting the sheet material when positioned therebetween. The cutting knife is generally continuous along a major portion of the length thereof and has a minor arcuate portion which is discontinuous with the major portion so as to cut the sheet material whereby the sheet material on one side of the cutting line is provided with a straight cut portion having an arcuate projection extending therefrom and the sheet material on the other side of the cutting line is provided with a void portion corresponding in configuration and dimension to the arcuate projection.

Abstract: Apparatus for stripping waste material from a paperboard web in a die cutter or die cutting section of a press that includes an outer pin cylinder, carrying self cleaning stripper pin mechanisms, and an inner ejection cylinder mounted eccentrically within the outer pin cylinder by a mounting arrangement that has a longitudinally extending non-rotatable beam with a pair of trolleys mounted thereon that carry rollers engagable with the inner surface of the ejection cylinder to keep the ejection cylinder in a predetermined position at all times with respect to the pin cylinder for engagement with said stripper pin mechanisms.

Abstract: A gap cutting sheeter having controls to adjust the cutting position of the first and second flying shears relative to each other to set the gap size to a particular printed sheet. The downstream flying shear can be set up to cut the leading edge or the following edge of while the web is moving. When cutting the leading edge, a flexible flipper is provided just ahead of the flying shear to contact and push successive cut chips toward a vacuum chip removal system. Alternating vacuum removes the chips, and pulsing positive air pressure against the underside of a leading, trimmed edge guides it over the chip removal vacuum chamber to the downstream conveyor. A knockdown vane is provided just after the flying shear to press the leading edge of a cut signature against the downstream deck plate to prevent wrinkling of the cut signatures.

Abstract: A cross cutter for a running web of paper which is transported along a horizontal path has an upper rotary knife holder above and a lower rotary knife holder below the horizontal path. The holders carry knives which extend transversely of the path, and each holder further carries an elastic lip-shaped deflector which is located behind the respective knife and serves to maintain the leader of the web behind the separated length of the web in or close to the path so that the leader can enter a transporting unit which advances the severed lengths of the web to a stacking or other processing station. The lower deflector is installed immediately behind and the upper deflector is spaced apart from the rear side of the respective knife.

Abstract: A device including at least one elongate slot having an elongate blade or vane secured therein, in which the slot when viewed in transverse cross section is curved and the blade or vane is resilient and normally flat in its unstressed condition out of said slot and has a portion securely locatable in said slot by the reactive pressures resulting from deformation of said portion to assume the curve of the slot when located therein.

Abstract: The scrap ejector has a relatively long and thin body made of stainless steel or other resilient and durable material. The leading end portion of the body overlies and is secured to the outer surface of the die roll. In its undeflected condition, the trailing end portion of the body is spaced radially from the die roll. In one embodiment the body has a pad of compressible elastomer upon the surface thereof distal from the die roll, and in another embodiment the body has an arcuate portion projecting from the aforesaid surface of the body. During passage of the scrap ejector through the nip between the die and anvil rolls engagement between the anvil roll and the resilient pad (in the first embodiment) or the arcuate portion (in the second embodiment) deflects the trailing end portion of the body to a position wherein its terminal end is closely adjacent the surface of the die roll and the leading surface of the cutting rule which trims the leading edge portion of the paperboard stock.

Abstract: An apparatus is disclosed which applies hot melt tape to substrates such as cartons or boxes which are fed through the apparatus in a timed, spaced manner. The requirement of applying the tape to each spaced carton is met by integrating the feeding and cutting of the tape to the timing of the carton or box feeding machine. The tape is applied to a predetermined location with a desired cut length determined by the configuration of the apparatus. The apparatus can be mounted on existing machines such as folder gluers or mounted on dedicated machines.

Abstract: A notch cylinder unit for selectively activating a plurality of impaling pins such as might be used for separating and removing a strip from a paper web. The notch cylinder unit comprises a cylinder having a longitudinally extending hole and a hollowing driving shaft extending therethrough, at least two rows of removable blades extending radially outwardly from and longitudinally of the cylinder, and adapted to cut a strip in the web, and a plurality of slidably mounted impaling pins generally equally spaced between the rows of blades and adapted to puncture, hook and remove the strip. The notch unit cylinder unit further includes an activating means including an activating means for activating or deactivating the impaling pins.

Abstract: An apparatus for removing scrap around the die cut blanks in a web comprising a pair of rolls through which the web is passed, one roll carrying flexible pointed fingers arranged substantially parallel thereto for impaling the scrap pieces and the other roll carrying resilient material opposed said flexible pointed fingers to contact the scrap pieces so they may be impaled by the pointed fingers. Scrap pieces are impinged on the pointed fingers as the scrap pieces pass between the fingers and resilient material before the nip of the rolls and are pushed outwardly from the surface of the roll by the flexible point finger for removal by a comb, brush or vacuum means.

Abstract: A cheekstrip having an upper part and lower part fits into a knife box assembly that is intalled in the rotary cutting cylinder of the folder used on a roll fed printing press. The upper part is made from a hard material and is connected to the lower part, which is made from a soft material such as open-cell sponge rubber. A knife is inserted between flat surfaces of two cheekstrips. The soft material applies correct pressure to the upper part, which contacts the paper against an adjacent member and clamps it securely, to enable the knife to make a quiet, consistent, distortion-free severance.

Abstract: A replacement cheekstrip having an upper part and a lower part for fitting into a knife box assembly that is installed in the rotary cutting cylinder of the folder used on a roll fed printing press. The upper part is made from a hard solid material connected to the lower part which is made from a soft material. The soft material can be open cell sponge rubber. A knife is inserted between the flat surfaces of the replacement cheekstrips. The soft material applies correct tension to the upper part, hard solid material, which in turn contacts the paper, against an adjacent cutting member, and clamps it securely to enable the knife to make a quiet, consistent, distortion free, severance.

Abstract: In licorice manufacturing equipment, a cylindrical multibladed cutter assembly for cutting licorice strips into bite length has its blades radially positioned in a cylindrical roller and its cutting edges transverse to the direction of movement of a conveyor carrying extruded licorice strips. For the purpose of preventing the severed bites of licorice from becoming wedged between the adjacent cutting blades, ejector rods are provided, one between each pair of cutting blades. Camming means cam the ejector rods radially outwardly at the circumferential position at which cutting takes place, thereby to dislodge and eject the licorice bites from the cutter.

Abstract: In the rotary punching of a moving material web, the punched out waste material has to be removed so as not to interfere with the course of the punching. This can be done with a vacuum and internal ducts in the female roll, but this method cannot be used at high working speeds because of centrifugal force. Instead of this in accordance with the invention, the die hole of the female roll is provided with pistons that are maneuvered to and fro in rhythm with the rotation of the roll. As a result, the punching waste is retained for only a short while after the punching, and then is ejected and carried away via an external suction arrangement.

Abstract: A waste stripping unit is disposed downstream from a die cutter for cutting a sheet of paperboard into a product and waste and includes an upper roller having a male die corresponding to the waste of the sheet and a lower roller having a female die which cooperates with the male die on the upper roller to separate the waste from the product during passage of the sheet between the rotating upper and lower rollers.

Abstract: A punch for a cutting die is provided for forming holes in corrugated board or the like. The hole punch includes a tubular metal member of circular transverse cross section having one end substantially flush with the back surface of a die plate in which it is mounted and the other end extending beyond the front surface of the die plate and terminating in a circular cutting edge. A body of resilient material, preferably molded rubber, is located within the cylindrical member and has one end terminating near the back end of the tubular member and another end terminating near the cutting edge of the tubular member. The purpose of the body is to eject and strip the scrap of corrugated board from the punch and from the rest of the blank being formed by the cutting die. The resilient body has a central, cylindrical recess at one end which enables the resilient material to be deformed inwardly when engaging a corrugated board being cut by the circular cutting edge.

Abstract: A cutting die is provided with scrap ejection provisions for removing scrap from the die. The ejection provisions are particularly effective for ejecting elongate scrap from elongate openings such as slots which are formed in carton blanks and the like, the blanks being produced from sheet material, such as corrugated board. The ejection system includes resilient ejection member located between two parallel cutting rules, which members eject or push out the scrap from between the rules in an asymmetrical manner, exerting more force along one edge of the scrap than the other. This causes the scrap to twist and be more easily ejected. An additional ejection member is located outside one of the cutting rules to cause a portion of the blank to deflect to further aid in the scrap ejection.

Abstract: A rotary cutter for a printing press directs a web between a knife cylinder and an opposed anvil cylinder. The outer surface of the knife cylinder mounts one or more knife blade assemblies each having a sandwich construction. Each assembly includes at least one and usually two blades separated by a spacer bar. The assembly also includes a perforator blade and an ejector bar located on opposite sides of the spacer bar and set in recesses formed on the sides of the spacer bar. The perforator blade has laterally spaced sets of chisel-like teeth that impale trim pieces cut by the blades. The ejector bar reciprocates radially within the assembly to remove the trim piece from the teeth. The assembly is held together by two sets of bolts that allow the location of the blades to be set independently. A set of half rings each carrying radially projecting locating dowels are nested in circumferential grooves formed in the knife cylinder. Each ring is aligned against locating pins mounted in the knife cylinder.

Abstract: A cutting device for cutting threads into predetermined lengths. The device has a first rotatable smooth faced drum and a second rotatable blade bearing drum having a plurality of radially extending circumferentially spaced cutting blades on the outer periphery thereof. Centrifugal force responsive means comprising fins connected to a deformable ring are positioned between the blades and on rotation of the drums act to press a thread onto the smooth faced drum. The blades are connected to the blade bearing drum only at their ends.

Abstract: Stripping apparatus to remove scrap around die cut blanks in a web comprises a roll pair through which the web is passed, one roll carrying spikes to impale the scrap pieces and the other roll carrying abutments to contact the scrap pieces on the opposite side to the spikes. According to the invention the abutments are retractable, so that effectively the scrap piece is pinched between the spike and abutment shortly before the nip of the rolls. FIG. 1 illustrates the preferred arrangement.

Abstract: Apparatus for partitioning and/or shaping a fibrous batt by gripping the batt along adjacent lines with resilient means gripping one surface and non-resilient means gripping the opposite surface and displacing said lines with respect to each other to separate the batt without compacting the parted edges of the batt.

Abstract: A punch for a cutting die is provided for forming holes in corrugated board or the like. The hole punch includes a tubular metal member of circular transverse cross section having one end substantially flush with the back surface of a die plate in which it is mounted and the other end extending beyond the front surface of the die plate and terminating in a circular cutting edge. A body of resilient material, such as natural gum rubber or latex, is located within the cylindrical member and has one end terminating near the back end of the tubular member and another end terminating near the cutting edge of the tubular member. The purpose of the body is to eject and strip the scrap of corrugated board from the punch and from the rest of the blank being formed by the cutting die. The resilient body has a central, cylindrical passage extending completely therethrough, in a preferred form.

Abstract: Method and apparatus for partitioning and/or shaping a fibrous batt by gripping the batt along adjacent lines with resilient means gripping one surface and non-resilient means gripping the opposite surface and displacing said lines with respect to each other to separate the batt without compacting the parted edges of the batt.

Abstract: A scrap knockout for use with a rotary punching apparatus includes a knife cylinder equipped with punch blades on the outer peripheral surface, and an anvil cylinder having a layer against which the blades are pressed, so as to punch a workpiece fed in between the two rotating cylinders. The scrap knockout is so arranged that each of the punch blades is formed with a cut or slot, and a scrap knockout lever is engaged with the cut or slot so as to be restricted in its upward and downward movements, with one end of the knockout lever is a free end located in the space surrounded by the punch blade and the other end is pivotally held by a punch blade support, so that the scrap formed by the punching can be removed by the upward motion of the lever.

Abstract: An improved, safer, more efficient saw table construction is provided in the present invention by channelled guide tracks which slidably support a tool and plate assembly in any one of two positions at right angles to each other. The tool can be readily moved from one position to another, without remounting the tool on the tool plate, by controllable withdrawal of the tool plate from the ends of the guide tracks, rotation of the entire tool and plate assembly, and reinsertion of the plate into the channelled tracks provided.

Abstract: Process and apparatus for cutting continuous strand or roving, particular strands of mineral material such as glass, into short lengths is disclosed. The apparatus employs a rotatable drum equipped with a large number of radially disposed cutting blades, the drum cooperates with a supporting device for supporting the strand as it is cut. Ejector bars are maintained in position on the drum between adjacent cutting blades by elastic mounting members that receive the ends of the ejector bars. The elastic mounting members cause the ejector bars to compress the strand against the support drum as the strand is being cut and, in conjunction with centrifugal force arising from rotation of the drum, to eject the cut pieces of strand from the cutting drum.

Abstract: A rotary cutting mechanism for the accurate, repetitive, controlled, pattern spacing of slits in thin flexible sheet material. The mechanism comprises a pair of rolls with one of the rolls having a plurality of blades spaced at intervals about its circumference. Each blade contains a plurality of cutting edges. The other roll has a plurality of platen bars spaced in a manner to cooperate with each cutting edge. Both of the rolls have steel bearers mounted at their ends with the bearers on the rolls having the same diameter as the outer edges of the cutting edges and of the platen bars to precisely control the cutting action of the mechanism.

Abstract: A rotary cylinder is mounted opposite abutment means, and has a metal strip upstandingly mounted on the cylinder, with an exposed edge for cutting out a portion of said material. In order to automatically eject the cutout portions, at least one resilient ejector is mounted on the cylinder, within and adjacent the cutting strip. Advantageously, the ejector is provided in form of telescoping, outwardly spring-loaded shells, mounted on the cylinder to extend generally radially of the cylinder.