Abstract: The present invention concerns a blade construction (10) for use in longitudinally cutting (in slicing) material webs, such as various paper and cardboard webs, films and recorder tapes, etc., with said cutter a material web being longitudinally parted into partial webs, the cutter consisting of a blade construction (10) comprising one or several blade pairs (11,12). On the edge (13) of a first blade (11), and similarly on the edge (15) of a second blade (12), has by grinding been produced a micro-rounding, and on the apex of the first blade (11) has been produced a bead (14). The radius (r) applied in micro-rounding is advantageously within 0.5-.mu.m, and the dimension of the bead is advantageously within 0.1-1 mm.

Abstract: A rotary die-cutting apparatus having cylindrical rollers mounted for rotation on spaced parallel axles. Die plates are mounted on the rollers in tight surface-to-surface contact with the outside surfaces thereof. Each roller has a body with a generally cylindrical outside surface and two longitudinal channels formed therein. The die plates are formed as thin flexible sheets of metal having their ends welded to one of the bars for mounting the sheets on the outside surface of the rollers. A wedge-shaped bar is slideably mounted in the other channel. After the ends of the die plate are welded to the weld bar in butting relation, the die plate is mounted on the roller with the wedge bar removed from its associated channel. After the plate is mounted on the roller, the wedge bar is slid into the channel and gradually forced against the die plate to bring it into surface-to-surface contact with the roller.

Abstract: An apparatus for removing the bead wires from a scrap tire having a pair of overlapping and counterrotating shearing members mounted on a movable carriage. The carriage provides reciprocating motion to the shearing members between two shearing work stations. While shearing action takes place at a first work station a scrap tire is fed into the adjacent work station, whereafter the bead wires of the scrap tire are first elongated and then compressed into overlying adjacent positions. Advancement of the shearing members into the tire produces a first tire shear that is at least closely tangential to the bead wires. When the pinch point of the shearing members is proximate the bead wires forward movement of the carriage is ceased. However, the tire is caused to rotate about its axis by the shearing members to produce a second shear that is substantially concentric with the bead wires, the first and second shears being a single continuous motion.

Abstract: A tree shear is disclosed which has a frame on which is mounted a pair of blades for pivotal movement relative to one another in scissors fashion; the blades being pivoted by hydraulic jacks. Each blade pivots on a rotary shaft having an eccentric center portion, each blade being mounted on the eccentric portion so that, as the shaft rotates, it causes the blade to oscillate.

Abstract: An improved log slicer requiring less power to operate due to the slicing action of the blade as opposed to the straight through crushing action of the prior art and as less power is required the blade can be made thinner as it does not bend, deflect or break as readily, and the slicing action also sharpens the blade with each stroke, making for increased production as there is no down time and the machine is much faster than the prior art shears.

Abstract: A cutting knife for a rotary cutting apparatus for multilayer isolated paper products with projections, for example in tooth form, projecting from a base body. The projections are formed as blades or the like displaceable in or on the base body and inclined with respect to a cutting plane; the faces of the blades lying in the cutting plane can be reground.

Abstract: Disclosed is an apparatus to longitudinally cut a cord reinforced rubber sheet into at least two strips of tire ply stock while the sheet is being conveyed past the apparatus. The apparatus includes a slitting device that utilizes shear-type action to cut through the sheet by the interaction of rotating disc-like upper and lower slitters. The upper slitter is power driven while the lower slitter is rotated by frictional contact between the upper and lower slitter. The apparatus may include a trimming device for trimming a boundary strip of the sheet. The trimming device also utilizes shear-type action to trim the sheet by rotating disc-like upper and lower trimmers similar to the upper and lower disc-like slitters of the slitting device.

Abstract: A shearing wheel, and a method of assembling the same, having an annular carrier and having a plurality of arcuate segments side mounted to a segment receiving surface of the annular carrier. The arcuate segments are laid in an end-to-end fashion to form an annulus with the outside diameter of the annulus having a radial extent greater than the radial extent of the annular carrier. A support shoulder extends axially outward from the annular carrier to contact the surface of the arcuate segments defined by the inside diameter of the annulus. The arcuate segments may be removed and sharpened, whereafter shims are inserted between the arcuate segments and the annular carrier to properly space the segments from an adjacent shearing wheel. Optionally, arcuate segments may be mounted to both side faces of the annular carrier.

Abstract: An apparatus for removing the bead wires from a scrap tire having a pair of overlapping and counterrotating shearing members and a movable carriage. The carriage includes a plurality of rolls positioned to fit within the inside diameter of a tire. One of these rolls is a tensioning roll that is movable so as to stretch the tire and elongate the bead wires. This elongation crowds the bead wires against a crowding bar. The crowding bar and a pair of compression rollers are mounted to a rod which is moved downwardly when the carriage is advanced toward the shearing members, said compression rollers being positioned to apply compression force to the side wall of the tire as the rollers descend. The compression force aligns the bead wires with a bead guide roll so that the crowding bar may be pivoted away from the subsequent shearing action, the bead wires then being crowded against the bead guide roll.

Abstract: The method comprises cutting a glass wool blanket with a circular cutting grid having elastomeric plugs in the grid spaces. The cut columns and the plugs are both compressed. The cut columns are ejected by expansion of the plugs.

Abstract: A method of setting up tooling on parallel rotary arbors for cutting plural parallel longitudinal slits in a web of sheet material advancing between the arbors, using a set of tooling comprising multiple circular cutter elements and multiple circular spacer elements, the elements having various nominal axial lengths with a common axial length tolerance of .+-.t. Each element, measured to determine the deviation between its actual and nominal axial length, is detectably identified (e.g. by color coding) with one of plural discrete successive subranges of the overall tolerance range .+-.t, viz., with that subrange in which its measured axial length deviation lines.

Abstract: A device for longitudinally cutting web material, especially paper and cardboard webs with at least one rotating circular knife pair consisting of a freely rotating point knife that enters the material during the cutting process and a pot knife that rests on a power-rotated hub element. To reliably preserve, with simple means, an initial basic or zero adjustment subsequent to regrinding or replacement of the pot knife, the cutting surface of the pot knife rests axially against a contact surface that is stationary in relation to the hub element.

Abstract: Labor and material costs for the maintenance and replacement of rotary slitting and slotting knives used in the conversion of corrugated paperboard are reduced by utilizing air channels behind shear knives of thin steel stampings for convective removal of heat from knife bodies.

Abstract: Apparatus for cutting thermoplastic filaments or rods with multiple blades in a granulation head of the type which is completely immersed in a cooling liquid, the blades acting with an extrusion die having extrusion orifices arranged in one or more rings centered on the axis of the die and coaxial with a rotary cutting means carrying cutting blades, wherein the cutting blades have an extrados surface inscribed within a regular convex polygon having an apex angle of 7.degree. or less and an intrados surface having a point of inflection situated at a distance between one quarter and one half of the width of the blade, the remainder of the intrados beyond the inflection point having a profile pattern similar to that of the extrados, and methods for chopping thermoplastics with such apparatus.

Abstract: Web severance is effected between non-contacting radially opposed severance points of circular edges on rotary upper and lower members between which continuously running paper web to be slit is engaged, the space between the severance points being sufficiently less than the thickness of the paper web and so related to the physical properties of the web as to cause severance of the web as a result of web fiber failure separation fracture at the point of maximum compression.

Abstract: A document shredding machine comprising a cutter assembly including cutter discs mounted separately in two rows on respective shafts for rotation in opposite directions about respective parallel axes, the discs of one row being arranged to enter gaps between the discs of the other row, wherein each disc is formed with a plurality of notches in its periphery and axially successive discs along the length of the cutter assembly are arranged with their notches circumferentially staggered in relation to one another in such a way as to eliminate the jerky action which occurs if the notches are aligned with one another and in such a way as to prevent an overall tendency for axial movement of the discs if the notches are progressively and uniformly offset from one another.

Abstract: A cutter apparatus for cutting of rubberized fabric material having high strength material embedded therein, wherein a carriage is reciprocated on a support frame, which frame may be adjusted angularly to provide a bias angle of cut. A cutter support is mounted on the carriage for movement therewith. Such cutter support journals for rotation a shaft that supports on one end a rotating cutter. The cutter has a plurality of lobes that taper providing a plurality of linear cutting edges. The cutter cooperates with a linear cutting edge on an anvil that also tapers thereby facilitating the shearing of the fabric material. A guide is mounted on the frame over which the fabric material travels and under which a conveyor belt move, which belt transports the fabric material.

Abstract: A cutter apparatus for cutting of rubberized fabric material having high strength material embedded therein, wherein a carriage is reciprocated on a support frame. A cutter support is mounted on the carriage for movement therewith. Such cutter support journals for rotation a shaft that supports on one end a rotatable cutter. The cutter cooperates with a linear cutting edge of an anvil carried by the cutter support to shear the fabric material. A guide is mounted on the frame over which the fabric material travels and under which a conveyor belt move, which belt transports the fabric material. The rotatable cutter has a concave groove on one side surface adjacent the outer periphery and a concave groove on the circumferentially extending surface that joins the respective side surfaces. The grooves define a circular cutting edge.

Abstract: Pieces of fabric e.g. tire cord fabric are cut using a rotary shear wheel having a grooved periphery. A land extends about the periphery of the shear wheel adjacent the groove. The land may be larger in diameter than the cutting edge.

Abstract: A wood chopper is disclosed for splitting, cutting and chopping firewood and the like which includes a rotating or reciprocating blade which cooperates with a stationary blade to simultaneously split and cut wood. The blade includes a sharp edge portion extending along a major axis of the wood which widens backwardly away from a direction of movement of the blade toward heel portions of the blade. The fixed blade is V-shaped and supports the wood to be cut. The heel portions of the blade may also be sharpened. The blade edge splits the wood and simultaneously urges the wood against the fixed blade so that the wood is split and cut in a single operation.

Abstract: Rotary slitting apparatus for slitting paperboard material including a pair of coacting knife holders for mounting on parallel adjacent rotatable shafts, such holders having thin flexible annular slitting blades clamped thereon at a slight angle to a plane normal to the axis of the shafts so that the blades overlap slightly to provide scissors-action cutting of paperboard material passed between the heads.

Abstract: A cable separator including a pair of slotted rolls that define uniformly spaced apart slitting or shearing sites which are spaced from one another by a distance corresponding to the conductor spacing of a flat cable. A guiding structure at the inlet of the slitting sites for guiding the flat cable thereinto at a proper transverse position to assure that slitting takes place between adjacent conductors. The guiding structure has a plurality of longitudinally extending spring loaded ribs that are spaced from one another by an integral multiple of the interconductor spacing of the cable. A pivotal clamping frame mounted at the inlet of the guiding structure and a mechanism for adjusting the clamping frame to adjust the distance over which the cable conductors are separated by the apparatus.

Abstract: Apparatus for slitting sheet material includes a pair of rotatable shafts having cooperating cutting knife assemblies thereon. The knives on one shaft are in the form of axially-spaced knife rings receivable between knife members on the other shaft. The knife rings are elastically deformable axially of the shafts and are spaced-apart a distance slightly greater than the spacing between the knife members to insure the absence of any gaps between the cooperating cutting knives. The knife members are releasably clamped axially on their shaft and are biased apart upon release of the axial clamping force in order to allow positioning of the knife rings between the knife members. Central mounting holes in the knife members increase in size from the axial center thereof toward the opposite ends thereof for allowing limited tilting movement of the knife members relative to the shaft on which they are mounted.

Abstract: An apparatus for separating conductors of a ribbon cable comprising a pair of fixed rollers having a plurality of radial intermeshing teeth spaced to engage the conductors.

Abstract: Apparatus is described for slitting an elongated web of sheet metal to produce a plurality of strips that are retained in the web during coiling by intermittently spaced connections. The connections are formed by partially sheared tabs that are easily broken apart for ultimate separation of the strips. Also described is a slitting cutter configuration particularly adapted to produce partially sheared tabs.

Abstract: A method is disclosed for reducing vibrations in revolving disc cutters used for cutting a running web. The method includes the step of coating the disc cutters, at least partly, with a layer having substance components with a high internal friction. Preferably, the disc cutters are made cup-formed so that they have a convex side and a concave side, whereby the coating is applied to the concave side of the cutters. Tough plastic, preferably epoxy resin or rubber, mixed with metal powder, can be used as a coating layer.

Abstract: A cutter hub for use in an underwater pelletizer such as disclosed in U.S. Pat. No. 4,123,207, issued Oct. 31, 1978, which includes a replaceable, double or single edged blade attached to each arm of the hub with a major portion of the length of the blade being attached to and supported by the arm on the hub thereby resulting in less axial deflection with increased cutting pressure, since the rigid hub arm carries the rotational stress without deflection of the critical blade cutting surface. This arrangement produces higher quality pellets, fewer knife adjustments, reduces the radial wear pattern on the pellet die plate, permits the use of thinner, less costly blades and permits the use of single edged or double-edged blade with a useable second side.

Abstract: Rings formed as slitter knives or counter-members are secured against axial displacement from selected positions along a slitter roller by inflating a number of pneumatic tubes carried in recesses formed in the circumferential surface of the roller, the recesses running lengthwise of the roller and being all located on one side of a plane containing the rotational axis of the roller. A flat is formed on the roller at a position diametrically opposite the pneumatic tubes to provide more positive location of the rings. Air is supplied to the tubes via a hollow shaft fitted to one end of the roller, the tubes being in pairs each formed from a tube of U-shape, the legs being disposed in adjacent recesses one end being connected to the hollow shaft and the other closed. Balancing of the roller is obtained by the use of different length set screws to which different numbers of washers are fitted, and also weights may be fitted to the inside of the roller.

Abstract: A shear assembly has frame means to which a first member is pivotally mounted. A second member comprising a blade is pivotally mounted to the first member, with the first and second members being positionable on opposite sides of the body of a tree. Extension of a cylinder interconnecting the second member and frame means provides a scissoring action of the first and second members to provide shearing of the tree. Means are included for providing that upon withdrawal of the second member from the body of the tree, the first member is also withdrawn therefrom.

Abstract: A slitting machine for longitudinally slitting sheet tinplate to form blanks for can bodies has two parallel horizontal shafts carrying cutter rolls conventionally arranged in pairs of overlapping rolls so as by a shearing action to slit the sheet tinplate driven to pass between the shafts. The shafts also carry further rolls which may be identical to the cutter rolls but are of a smaller diameter. Like the cutter rolls, these further rolls are arranged in pairs; however, by virtue of their smaller diameter they have a small radial clearance. By partially shearing the tinplate they therefore form the tinplate with lines of weakness parallel to the lines of slitting simultaneously made by the cutter rolls. To accommodate the machine to different thicknesses of tinplate the shaft spacing may be adjustable and/or the rolls may be readily removable for replacement by similar rolls of a different diameter.

Abstract: An apparatus for use in a data terminal device or other type of business machine for providing a plurality of different cutting configurations on a receipt or other type of record member. The apparatus includes a rotatably mounted stationary blade member having a plurality of different cutting edge configurations, a rotating blade member coacting with one of the cutting edges of the stationary blade member to cut the record member in accordance with the configuration of the cutting edge of the stationary blade member, and selectively operated activating means for rotating the stationary blade member to position one of the cutting edges thereof adjacent the record member so as to provide a predetermined cutting pattern on the record member upon operation of the rotating blade member.

Abstract: Shearing means of a brushwood cutter has a rotor with a plurality of sickle-shaped cutters, and a plurality of stationary, triangular tooth-like edge protrusions of a plate on which the rotor rotates. The curve defined by the cutting edge of each of the sickle-shaped cutters is such that the tangent at any tangent point of the curve is disposed at between 50.degree.-80.degree., and preferably between about 60.degree.-80.degree., with respect of a radial line passing through such tangent point and through the center of rotation of the rotor to secure a smooth operation of the rotor and to render the device capable of cutting relatively large pieces of brushwood.

Abstract: Slitting apparatus for trimming the edges of a web of corrugated board and longitudinally cutting the web into a plurality of narrow webs is constructed with selectively operable fluid operated means that clamps the working heads in adjusted positions along the length of their respective drive shafts. The fluid operated means includes a plurality of pressure bars extending parallel to the length of each shaft and disposed within different grooves thereof. The pressure bars are constructed of spring steel, and each is operatively positioned to clamp a plurality of heads in operating positions by engaging keys secured to these heads. The keys extend beyond the faces of the heads, and for each of the heads include notches that provide clearance for the extending portions of the keys secured to adjacent heads.The drive shafts are parallel to each other.

Abstract: An apparatus is disclosed for precision slitting of metallic coil stock into multiple continuous lengths of wire, wherein the resultant wire is characterized by a small cross-sectional area. The apparatus comprises means for guiding coil stock into a pair of revolving monolithic cutter rolls and means for collecting the slit wire. The rolls are positioned in engaging relationship and each roll contains a plurality of lands and grooves so that stock can be slit with an aspect ratio of less than five.