Abstract: An apparatus for the accurate sawing of very hard materials is described, comprising a rigid circular wire saw and an assembly providing support, guidance and drive for the wire saw. A plurality of saw-guides constructed of guide wheels having a rubber circumference bearing surface, are used to support and guide the rigid circular wire saw. In the preferred embodiment, a disk shaped drive wheel, driven by an electric motor, applies frictional pressure and linear impetus to the wire saw, causing it to rotate at high speed. The apparatus may be scaled in size to accommodate any given maximum thickness of workpiece material.

Abstract: A hand-held power tool with a circular-disk-shaped tool mounted on an output shaft which extends normal to a drive shaft has a guiding part which surrounds the tool in an immovable position at its cutting side. The guiding part has a wall arranged for abutting against a workpiece and having a through slot for the tool, and a guiding edge extending parallel to a cutting direction of the tool, and the guiding part being movably guided in direction normal to the wall.

Abstract: In the on-site manufacture of nipples of relatively short length for joining pipe sections in a conduit system, spacer pins and spacers are selected to achieve a user-determined displacement between an end stop and cutting element of a pipe groover used for cutting external annular grooves along the pipe stock. The use of the spacer pins and spacers allows the grooving tool to be displaced at measured displacements from a selected end of the pipe stock while providing a visual gauge to the user of such displacement.In the fabrication of these nipples, the end stop/yoke is positioned abutting a selected end of the pipe stock thereby positioning the cutting element where a first groove is cut. Upon selection of a combination of spacer pins and/or spacers the end stop is again positioned to abut the selected end of the pipe stock thereby positioning the cutting element where a second groove is cut.

Abstract: A method and apparatus for forming patterns from sheet material employs a castered cutting bit that is guided along a closed cutting path defined by the shape of the desired pattern. The bit is mounted fixedly in a presser foot and projects a predetermined amount below the surface of the foot to control the depth of cut into the material. Frangible materials are cut to depth less than the thickness of the material, and thereafter complete severance of the pattern from the sheet material is accomplished by fracturing the material along the line of cut.

Abstract: The invention relates to a method for manufacturing insulating troughs for pipes, especially pipe bends. According to the method semicircular portions of a pair of concentric cutting blades having radii of curvature corresponding to the outer diameter of the insulating trough and the outer diameter of the pipe respectively, are applied with their cutting edges in a vertical plane against one edge of a board of insulating material, the blades are set in motion in their circumferential direction and advanced through the material of the board along a path corresponding to the desired shape of the insulating trough. An apparatus for carrying out the method is also disclosed.

Abstract: Apparatus for removing covering material from underwater pipelines. A frame of the apparatus is clampingly engaged to the pipeline. A plurality of pipeline material cutters are cantileverly supported beyond the clamp to provide a plurality of cutting passes simultaneously and away from the points of attachment of the apparatus to a pipeline.

Abstract: A machine for cutting insulation material into semi-circular blocks. Circular cutting blades are mounted reciprocally on a support shaft. A router functions to cut a groove in the insulation material to provide clearance for the cutting blade support shaft.

Abstract: A cutter employing two heated eccentrically mounted rollers adapted to coact with each other in order to sever a material by means of a crushing action is utilized in conjunction with a transport member to cut predetermined lengths of material from a continuous roll of said material. The cutting action of the heated rollers provides cut ends of the material which may be readily spliced together without the use of gum strips.

Abstract: Fibrous board transition parts are produced on the job site from standard lengths of preformed fiberboard duct units. Transition parts are interposed between linear runs of duct pieced together to change direction of the duct work. The transition parts, sometimes referred to as elbows or bends, can be easily fabricated on the job site by modifying standard lengths of preformed linear duct by cutting and removing pie-shaped sections from the duct. The modified duct can be bent inwardly to form a one-piece arcuate transition part wherein the outer wall section remains intact and provides structural strength to the transition part. The seams are secured with structural adhesive tape wrapped around the transition part.

Abstract: Process and apparatus for cutting an elongate complex structure composed of materials having different properties, e.g. a liner and a core which are relatively soft and flexible and susceptible to rupture or crushing and a facing of hard material such as a metal plate. The facing may have an upwardly turned portion, flange portion and groove portion at each side thereof. A carriage and a base frame are movable in the direction of the travel of the complex structure and in the direction perpendicular thereto, respectively. Various types of cutters are mounted on the carriage. The complex structure is instantaneously cut in the direction of the width thereof while it is travelling at a high speed. The cut composite structure has smooth and fine cut edges, and is useful for e.g. a siding of a building.

Abstract: In the manufacture of a packing container laminated packing material is used which with the help of a rotating cylindrical cutter is made thinner within a limited longitudinal region. This reduction of thickness has been difficult to realize up to now with the desirable accuracy, since the specified depth of cut that has been set may readily be influenced by vibrations in the moving material or in the cutter. These difficulties are overcome by a guiding device, arranged in the immediate vicinity of the edge of the cutter, which limits the thickness of the strip cut away. The guiding device is suspended in contact with the cutter in such a manner that not only are the vibrations reduced, but also the influence of the remaining vibrations on the depth of cut is minimized. The guide is adjustable to vary the depth of cut and includes air outlets for cooling the cutter and for guiding the cut strip away from the packing material.

Abstract: An apparatus for forming an aeration groove in a filter which is composed of a body of entrainment-type fiberous filter material and a layer of plug wrap paper circumferentially about the body. The apparatus is comprised of a rotatable filter drum for conveying a series of the filter plugs in sequential order past a grooving station and a forming means within the drum at the grooving station for forming at least one peripheral groove in each filter plug conveyed through the station. The forming means effects a groove which extends through the plug wrap paper in order to communicate the exterior of the filter plug with the body of filter material. In addition, a resilient guide is located at the grooving station opposite to the forming means in order to roll the filter plugs through the grooving station. In this way, rolling of the filter plugs in enhance and the formation of a complete annular groove is ensured.

Abstract: A panel grooving apparatus has a table for supporting a panel at a working level. A rail extends along a side of the table and a working assembly is mobile on that rail. The working assembly is selectively immobilized in various grooving positions by stops movable and selectively arrestable along the rail and engageable by part of said working assembly. The panel is releasably retained on the table by movable peripheral elements thereon. In a simplified embodiment, the working table may be reduced to a ruler on which a shoe of a rectilinear guide slides.

Abstract: Apparatus and method for forming V-shaped grooves in a board material including a grooving tool having a V-shaped leading cutting edge with a preselected included angle for cutting a V-shaped groove to a preselected depth in the board material, means for producing relative movement of said grooving tool and said board material to cut the V-shaped groove in said board material, guide means for inhibiting nonlinear relative movement of said grooving tool and said board material to cause a straight groove to be cut in said board. The board material thus grooved may be folded to form structures for use as boxes and in certain furniture applications.

Abstract: This invention teaches apparatus having track-like guide means adapted to be secured onto the face of a conveyor belt crosswise of the belt in the general area of a mechanical joint to be made in the belt. A carriage rides along the guide means, and supports first and second cutters used to cut a groove in the belt and to end cut the belt. Power means such as a winch is used to move the carriage along the guide means. The practiced method includes taking sequential passes of the cutter carriage to make these cuts, and taking like steps at the opposite ends of the belt span. The mechanical fastener can be received then in the matched recesses and secured to the underlying portions of the belt ends to join them together while having the fastener generally flush with the rubber overlay. The apparatus is entirely portable and particularly adapted for in-the-field repair and/or modification of existing conveyor belts.

Abstract: A frame supports a hollow housing which mounts thereon a hot wire die support plate from the outer side of which projects a hot wire die. The housing is pivoted to the frame for movement between an operative position in which the die projects upward for cutting a cavity in a block of material that is moved over the support plate between limit-defining stop pins, and a discharge position in which the die projects downward for the gravity release of scrap material resulting from the cutting operation. The scrap material falls onto a hot wire scrap cutting grid extending across a scrap discharge opening below the housing, whereby the scrap material is reduced to small particles as it gravitates through the hot wire grid.

Abstract: A machine for cutting insulation material into semi-circular blocks. Circular cutting blades are mounted reciprocally on a support shaft. A router functions to cut a groove in the insulation material to provide clearance for the cutting blade support shaft.

Abstract: In the formation of containers wherein an endless sheet material is continuously fed, finished, cut into blanks of predetermined length, and the blanks are formed into containers, the improvement wherein the finishing includes the steps of shaving off a longitudinal strip from one face of the sheet material so as to reduce the thickness of the sheet material along said strip, and removing by suction the strip shaved away. An apparatus therefor comprises a roller for supporting said sheet material, and a rotary hollow knife aligned with one longitudinal edge of the sheet material adjacent the supporting roller, the axis of rotation of the hollow knife being substantially parallel to the longitudinal edge.

Abstract: An apparatus for shaping profiles in the surface of a moulded semiplastic body (4) comprises a comparatively fine wire (1) extending between the free ends of a plurality of these supporting members such as needle-like supporting members (2,3) which determine the profile shape. The wire is zigzagged in such way that each individual wire portion extending between two adjacent supporting members is oblique in relation to the direction of relative movement between said body and the profile shaping apparatus itself. The apparatus produces extremely distinct profiles with good smoothness of the body surfaces. The apparatus is primarily used for shaping profiles in building units made from a body of lightweight or aerated concrete, while the body is still uncured and semiplastic.

Abstract: A machine for cutting one or two slots in the sides of a log intended for use as a roofing rafter, the machine including a pair of dado saws, means for moving the saws up and down past the sides of a log, and supports for the saws which are adjustable to coordinate the angle of the cuts with the angle of a previously made notch.

Abstract: A cutting and scoring device and method wherein an elongate body is positioned on one face of a sheet to be worked, having a track extending along the body, a carriage movable along the rack, a tool holder carried by the carriage for movement therealong and located over the sheet, and a tool depending from the tool holder for working engagement with the sheet.

Abstract: A method of applying a line-shaped opening in a coating on a plastics foil, in which a part 3 having a pointed end is moved according to a line 4 in contact with the coating 2, while the temperature of the part 3 lies in the melting range of the foil 1 and the pressure exerted on the part 3 together with the rate of movement of the part 3 is such that the coating 2 with a portion of the subjacent foil 1, considered in thickness direction, is cut through according to the line 4.

Abstract: A machine for cutting grooves in foam workpieces includes a plurality of vertically spaced U-shaped cutting wires mounted on pairs of mounting posts. One leg of each U-shaped wire is mounted on one post, while the other leg is mounted on the other post. The posts are mounted on a frame so as to be adjustable in spacing and vertical position with respect to each other, so the widths of the grooves can thereby be adjusted. Horizontal slice-cutting wires are provided behind the groove-cutting wires so that grooves and slices can be cut simultaneously. The slice-cutting wires are aligned at an angle with the vertical so that each slice-cutting wire exits the workpiece before all those beneath it. One version produces tongue-and-groove sheet, while ship-lap sheets are produced by the other version.

Abstract: A method of and device for cutting blocks of foamed material, e.g. polyethylene. An endless cable of elastic wear resistant material e.g. steel, having a rough surface and a diameter of from 0.5 to 2 mm is preloaded at a force of from 5 to 30kp. The cable is operated at a speed of rotation of from 30 to 60 m/sec while the foamed material is being moved relative thereto toward the foamed material to be cut along a plane extending in a direction transverse to the direction of movement of the cable. The cable of elastic material having helically wound therearound a wear resistant wire with a diameter of from 0.1 to 0.3 mm.

Abstract: An apparatus for making semi-circular pipe insulation segments from a block of foamed glass of like foamed, expanded or cellular plastics or elastomers having reciprocating adjustable cutter members mounted on a reciprocating frame structure, which cutter member travels in an arcuate path through the block placed below the cutter members, the improvement of which comprises a rigid adjustable blade assembly.

Abstract: An apparatus and method is provided for scoring, forming and adhering a single sheet of phenolic or similar hard brittle surfacing material to the face and edges of a panel to form kitchen cabinet doors and the like. One face and the edges of the substrate panel are coated with contact adhesive and the face is adhered to the back of a phenolic sheet, also coated with the contact adhesive. The front face of the phenolic sheet is scored in an apparatus utilizing a non-adhering overhanging fence. After scoring, extensions of the phenolic sheet are pressed against the panel edges to cover the four edge surfaces of the panel.

Abstract: A machine for cutting grooves in foam workpieces includes a plurality of vertically spaced U-shaped cutting wires mounted on pairs of mounting posts. One leg of each U-shaped wire is mounted on one post, while the other leg is mounted on the other post. The posts are mounted on a frame so as to be adjustable in spacing and vertical position with respect to each other, so the widths of the grooves can thereby be adjusted. Horizontal slice-cutting wires are provided behind the groove-cutting wires so that grooves and slices can be cut simultaneously. The slice-cutting wires are aligned at an angle with the vertical so that each slice-cutting wire exits the workpiece before all those beneath it. One version produces tongue-and-groove sheet, while ship-lap sheets are produced by the other version.