Abstract: The present trimming apparatus is capable of trimming the margins of three-dimensional workpieces with the aid of strip steel knives which are driven, preferably by pneumatic piston cylinder means in any desired direction. The workpiece such as the dashboard of a car, is held on the outside thereof by a workpiece support which has such a shape and cut-outs that the strip steel knives may be moved through the workpiece support. A counter-holder presses the workpiece against the outer support. In this combination of elements the workpiece may be trimmed from any direction from its outer side inwardly. The trimming tools may be operable in sequence and may also be supported on a carriage which shuttles back and forth between a trimming station and a loading and unloading station. Power savings may be in the order of 90% as compared to the power requirements of conventional stamping tools.

Abstract: Shrink film perforating unit for perforating thermoplastic film material, for example of the type used to wrap articles which are then subjected to heat shrinking tunnel treatment to shrink the thermoplastic material tightly around the article yet permit captive hot air to escape via such perforations, such unit being in the form of a rotary heated perforator arrangement including rotor having heatable external contact perforation points, e.g. in the form of a star wheel, and a stator with heating means captively received within an internal axial bore of the rotor for heating the external contact perforation points, with sufficient clearance being provided therebetween to permit unhindered rotation of the rotor about the stator, whereby the stator may be stationarily mounted with respect to the rotor and the rotor rotatably mounted so as to be disposable for location crosswise of the path of travel of a movable web of thermoplastic film material, e.g.

Abstract: Sheet glass is held for cutting with multiple rotary blades by freezing to a supporting base plate with a liquid, preferably water. The same liquid at a temperature just above freezing temperature is used to cool the blades during cutting, and forms a frozen scale which protects the glass and prevents chipping. After cutting, the liquid is allowed to thaw and releases the pieces without damage or need of special cleaning.

Abstract: An apparatus for preparing layered, nonbonded, structures of cross-lapped film is disclosed wherein at least two rolls of layered, nonbonded film are combined by introducing into a common location cut portions of film from said rolls from at least two film delivery means. The film is delivered to the common location in alternating order. The layers in the structure are maintained in position in a suitable receptacle means.

Abstract: An apparatus is disclosed for cooling and lubricating shear blades for a glass feeder mechanism, with each blade having associated therewith a pair of spray heads in the form of blocks. These blocks are mounted above the blades with a generally vertical, fan-shaped, spray being issued from each spray head. The spray will consist of air and liquid, with the liquid being primarily water with a small amount of lubricant included therein. Each spray head is composed of a pair of blocks each having a passage, drilled therein, one communicating with air and the other with liquid, the blocks being separated by a pair of shims, with the shims having cut-out portions respectively to serve as exit openings for the combined air and liquid spray.

Abstract: In the manufacture of modular chairs, couches and lounges, an apparatus shapes a block of an expanded plastic foam into a predetermined surface configuration by cutting by means of a hot wire tautly mounted on a frame for two dimensional manually guided movement defined by the periphery of a template. A rotating spiral saw replaces the hot wire as an alternate cutting device.

Abstract: Apparatus for compressing and banding a predetermined number of generally flat, compressible articles, such as disposable diapers, includes the following. Devices are positioned at one end of the apparatus for successively receiving the articles and for positioning the articles in a longitudinally extending row. Devices are provided for moving a group of a predetermined number of the articles from the receiving and positioning devices in a generally longitudinal path of travel to the other end of the apparatus and for compressing the articles at the other end of the apparatus. Devices position banding material across the path of travel of the group of articles for allowing the banding material to position itself around the leading end and sides of the group of articles as the group is moved to the other end of the apparatus. Devices then move the banding material around the trailing end of the group of compressed articles.

Abstract: The separation of label tape formed of oriented thermoplastic polymer fibers into individual labels having wash-durable ends, by progressively melting the fibers, in a transverse zone of the tape, beginning at one face of the tape, while also progressively forcing the molten polymer, in a direction diagonally away from this zone and toward the opposite face of the tape, into the interstices between the unmolten fibers and with a portion of the polymer forced along said opposite face, using a heated beveled blade, having a blunt leading edge and chilling the molten polymer at said opposite face with a cold platen opposite the blade, to form a polymer anchor at said opposite face, and anchor the fibers in the polymer which serves as a matrix.

Abstract: A method of cutting desired pieces from a heat-severable material in which a tool is provided to cut a shape corresponding to one projection of the pieces in one direction and to cut a second projection of the desired pieces in a direction at right angles to said first cut, and a unitary tool to perform the method.

Abstract: Apparatus for use with a pair of thermoplastic strips of the type illustrated in U.S. Pat. No. 3,608,177 wherein one strip is formed with studs longitudinally spaced at intervals and a second strip apertured and counterbored at the same intervals is used to bind sheets apertured at the same intervals at locations spaced inward from one marginal edge is described. A pressure bar is first manually moved to operative position and a handle compresses the strips together by exerting a controlled force on the pressure bar. The handle then initiates movement of a support for a knife consisting of a length of metallic ribbon material having spaced horizontal stretches in horizontal alignment with excess stud lengths of the first strip projecting through the second strip, the ribbon being under tension to hold such stretches taut. As the support moves toward the studs a current is passed through the ribbon, heating it so that the ribbon functions to cut off the excess stud length slightly below the second strip.

Abstract: Continuous strip closed-bottom open-mouthed packaging bags are produced by continually making, at spaced intervals in a continuous flattened tubular oriented plastic film supply, a transversely extending heat seal to define a bag bottom, and, adjacent each heat seal, perforating the two plies of the film supply with a blade heated to effect annealing of the edges of the perforations and having a serrated cutting edge with spaced deep recesses to define connecting tabs between perforations.

Abstract: Apparatus for cutting plastics, said apparatus comprising heated and cooled parts separated from each other by insulating means, whereby said tool is continuously working under a temperature corresponding to the temperature of the transition from a solid into a liquid phase of the plastic to be shaped.

Abstract: A connector means for conveying fluid from a supply source to a delivery location, said connectors having one conduit extending to the supply source and another conduit extending to the delivery location. Each terminal part has a cylindrical housing with a closed end to which the conduit is joined, and having an opposite operable end which is closed by a penetrable barrier. The barrier and closed end of the housing define an interior environment safe from external contaminants. A male tubular coupler is in one housing, a female tubular coupler is in the other housing, and a penetrator element is disposed around one of the tubular connectors. The penetrable barriers have a film of covered adhesive. The exposed adhesive films are placed in face to face contact to coaxially align the housing parts and bond the barrier membranes to exclude the environment.

Abstract: This invention provides an improved method and an improved apparatus for cutting bitumen cakes or like products from a sheet of the product previously cast in a flat-bottomed basin, during the cooling of the sheet. The cakes are cut out of strips previously cut out of said sheet. A transverse girder mounted on wheels span the basin, and suspended from the girder is a carriage supporting a pivoted heated cutter. As the cutter moves in the cutting direction it cuts a transverse strip of product and carries along a trolley provided with a wedge member adapted at the same time to raise the cut strip. The carriage also comprises a pusher arm whereby, during the return stroke of said carriage, said pusher arm can drive the fully cut strip towards another cutter of the guillotine type which cuts the cakes out of the strip. During the strip cutting step, the carriage also carries along a belt so as to insert the same under the strip as it is cut by said first cutter.

Abstract: Combustible materials, including plastic sheets, plates, and blocks, also leather and all varieties of wood, may be cut along predetermined lines by engaging same with a heated reciprocating wire at temperatures which vaporizes the material rather than melting same. The machine providesa reciprocating wire which is heated by electrical resistance. A system of air quenching of the wire above and below the cutting zone is employed in order to attain incandescent temperatures at the point of cutting.

Abstract: Apparatus for cutting a body of rigid plastics foam material, such as polyurethane or poly-isocyanurate, comprises a bed for supporting the body and two sets of parallel cutting elements adapted to oscillate longitudinally out of phase with each other. The cutting elements may consist of helically twisted ribbons of electrical resistance alloy, twisted in such a way that the handedness of the twist varies at regular intervals along each element. The elements are heated to a temperature below the fusion temperature of the plastics material, and are passed through the body to sever it into a number of slabs.

Abstract: A positive acting apparatus or machine is disclosed having an upper, downwardly movable blade assembly and a lower fixed position opposed blade assembly for cutting-off selected lengths of a resin or plastic sheetlike material. Fluid motors are employed for raising and lowering the upper blade assembly, and rack and gear means is provided for assuring that both end portions of the assembly move in exact synchronism. The upper blade is aligned with and operated on the same vertical plane as the lower blade, and means is provided for stopping downward movement of the upper blade when it approaches close adjacency with but before it engages the lower blade. Electrical heating elements extend longitudinally along the blade assemblies and are energized to maintain the blades at a raised temperature during their applicatin to the material.

Abstract: Wrapping apparatus including a film cutoff element. The cutoff element being an internally heated rod-type heating unit having an external periphery designing a corner edge. The element is maintained at a temperature below the melting point of the plastic film to be severed by a thermostat which energizes and deenergizes the cutoff element in dependence upon the temperature of the cutoff element. A bimetal thermostat in good heat transferring relationship with the cutoff element is utilized to control the energization of the heating element.

Abstract: A bone saw for medical purposes having a saw blade carrying out a back and forth movement. Channels for guiding a cooling medium are formed in the saw blade, which channels are connected to a cooling medium source.

Abstract: An apparatus for cutting arbitrary shapes in material, particularly in synthetic plastic foam material, is disclosed. The apparatus includes a bendable, shape-retaining, electrically conductive resitive wire which may be successively formed into any desired shape by selectively arranging either or both elements of a pair of independently movable wire positioning elements which are respectively attached to end portions of the resistive wire. The resistive wire is also connected to an electrical current source provided on said elements for heating the wire to a predetermined temperature which is sufficiently high so that the wire may cut the desired shape into the workpiece by heat.

Abstract: An electrically heated parting tool for removing windshields and other uses has a holder in the form of a long slender housing mounting a blade-like parting element at one end. The parting element is constructed of thin flat sheet metal and has a generally U-shape including a pair of thin flat leg portions disposed in coplanar relation and joined by a thin flat connecting portion defining a tip end. The free ends of the element leg portions are secured to a high temperature resistant ceramic-like support member recessed into one side of the holder. The parting element extends longitudinally from the holder and has a right angle bend between the holder and tip end whereby the tip end extends laterally of and toward the opposite side of the holder in spaced relation to the holder end. The holder includes a housing at the opposite end in which is located a step-down transformer connected to the leg portions of the parting element by leads extending through the holder.

Abstract: Apparatus and method for cutting a piece of synthetic fibrous material to a desired shape is disclosed. The apparatus includes an elongate heat resistive mounting structure having a shape conforming at least partially to the curvature of the desired shape. The mounting structure has an exposed face, and a resistor wire is embedded in this exposed face. Electric power is applied to the resistor wire so that the wire in the heat resistive mounting is heated to melt the synthetic fibrous material as the mounting structure is moved therethrough to cut the material to the desired shape.

Abstract: An apparatus for cutting arbitrary shapes in material, particularly in synthetic plastic foam material, comprises a bendable, shape-retaining, electrically conductive resistive wire. The wire may be successively formed into any desired form factor by selectively arranging either or both elements of a pair of independently movable electrically non-conductive wire-positioning elements which are respectively connected to end portions of the wire. The wire cuts the desired shape by the heat produced by connecting the wire to an electrical current source which heats the wire to a sufficiently high temperature. Securing portions are respectively provided on the movable wire-positioning elements so that the latter may be fixedly positioned and form an interlocked assembly, whereby the wire may be positioned into a narrow loop and thereby cut circular patterns into a series of workpieces.

Abstract: A device for slitting billets rolled to produce a multiple stranded bar, in which a guide member and support rollers direct the multiple stranded bar, emerging from a stand, against a rotary knife having a circular blade bevelled peripherally to provide shoulders over which individual strands will ride, thus splitting the bar in advance of the knife. Passages behind the knife channel the individual strands.

Abstract: A miniature thermal wire stripper having a pair of heater elements in the form of hollow tubes each with a heater coil disposed therein and affixed to a pair of spring loaded handles for contacting and subsequently melting through thermal (e.g. thermoplastic) insulation about a wire from which insulation is to be stripped. A pair of wire stripping clamping members in the form of blades respectively attached to the hollow tubes have semi-circular recesses in the clamping edge thereof. In one embodiment, the circuit for the heater elements is completed through the blades so that the blades are heated only when held together in contact with each other or with the wire being stripped. In another embodiment the implement resembles a pair of tweezers having particularly shaped blades at the operative end which are configured to serve the purpose of the particular function for which the implement is designed.

Abstract: This invention relates to a cutting device for coated plates comprising frame means,First stationary cover plate means on said frame means,Second movable cover plate means on said frame means,Heatable knife means adapted to be displaced along one edge of said first stationary cover plate means between said first and second cover plate means,Carriage means below said cover plate means for supporting said knife means,And means for displacing said carriage means and said knife means supported thereby.

Abstract: This invention relates to apparatus for cutting patterns from blocks which thereafter may be used as molds for forming radiotherapy shields. The device comprises rigid rod means connected at one end thereof to a frame for pivotal movement therewith and having tracing means at the other end thereof so that a pattern such as the X-ray of a portion of a patient's body may be traced thereby. The pattern traced is transmitted to the intermediate portions of the rigid rod means which includes an offset portion within which a block of plastic material, such as polystyrene foam, is placed. This offset portion is spanned by a spring-loaded, electrically heated wire which serves to cut an opening in the plastic block corresponding to the pattern traced by tracing means. Thereafter the block with the patterned opening cut therefrom is used as a mold for receiving metal shielding material.

Abstract: In a glassmaking process, a pair of reciprocating blades are used to cut a stream of molten glass into discrete charges known as "gobs". The cutting surfaces of the shear blades are maintained in a spaced-apart relationship by pairs of raised portions or rails formed in or on the facing blade surfaces. The raised portions or rails of the blades keep the blades separated a specified distance and thereby extend the wear life of the blades by eliminating friction between the cutting surfaces of the blades. A solid film lubricant is applied to the blades and serves to lubricate both cutting surfaces of the blades, thus the blade surfaces that contact the molten glass stream are lubricated to avoid the possibility of the glass sticking to the shear blades.

Abstract: In combination with an electrically heated wire for cutting plastic material, a guide plate is provided for supporting the material to be cut. The plate is mounted movable between a first and a second position and circuit means are provided for energizing the wire and including a normally open switch arranged to be closed by said plate in said second position of the latter.

Abstract: Thin material such as hair or paper is severed by a singeing process using the heated and opposed edges of two thin strips of metal with the edges closely spaced apart to form a slot and with the edges heated by high frequency electrical current or currents flowing along such strips and exhibiting therewith and therebetween skin and proximity effects, and by moving such strips relative to such material so that the material to be singed or severed enters such slot and is therein singed to effect severance by such singeing.