Abstract: A splicer for a heat cohering belt has a base supporting a lower platen frame. A heated lower platen is vertically liftable in the lower platen frame by means of an expansible envelope therebetween. An upper platen frame on the base supports a heated upper platen for movement toward and away from the lower platen. A rotatable cam on the base is effective to lift the upper platen, and a bail on the base is effective to hold the upper platen against lifting above a chosen point. Both platens are centrally supported for expansion in two directions away therefrom, and the lower platen is made flexible by a number of transverse gaps therein.

Abstract: A method of continuously producing clad composites is disclosed. The cladding is combined with a resin-wet reinforcement and pultruded through a forming and curing die in a single processing step.

Abstract: Disclosed is a hand tool for wrapping sealing tape such as unsintered polytetrafluoroethylene around the end region of threads on a cylindrical conduit or pipe. The tool includes a holder for a tape dispenser which has mounted thereon a tape cutter so that the dispenser with a roll of tape rotatably held therein is a complete unit usable independently of the tool. The dispenser has a flange, however, which is slid into a groove in the tool and held frictionally therein by a leaf spring in only one predetermined position so that the free end of the tape is presented between a grooved roller and the threads of the pipe. A third roller, mounted on the end of a hand operated lever, is spring-pressed against the opposite side of the pipe wall so that the grooved roller is pressed against the tape to force the tape into the threads, the tool being rotatable about the pipe to wrap one or more turns of tape around the pipe threads.

Abstract: Composite strips are spliced end-to-end each composite strip being formed by a first strip having a pressure-sensitive adhesive inner side and a second strip having an adhesive-repellent inner side on which the first strip's inner side is stuck for easy subsequent removal. To form the splice, a length of the first strip having the pressure-sensitive adhesive inner side is removed from one of the composite strip ends so as to leave a length of the second strip extending therefrom with its adhesive-repellent inner side exposed, this length of the second strip being lapped on the adjacent outside of the other of the composite strip ends while positioning the composite strip ends to form the joint and with this length spanning the joint. Thereafter, flexible splicing pieces are applied spanning the joint on both sides with the one on the side of the lapped length of the second strip extending therebeyond so it is stuck on the outside of the lapped composite strip's outside.

Abstract: A hand-operated device for applying adhesive labels to an object to be labelled. The labels are carried on a backing strip which is moved intermittently around a deflecting edge such that a label is removed from the backing strip at each feed step. A pressure member serves to apply the label so removed to the object to be labelled and the pressure member and deflecting edge are mounted for movement about a fixed pivot during the feed. A pusher member mounted for movement about a fixed pivot transports the label from the deflecting edge to the pressure member while bearing against the adhesive face of the label.

Abstract: Bonds are made between two work pieces by using foils exploded by electrical energy typically stored in a large capacitor. To increase the uniformity of the bond area, a foil having at least one slit cut in the direction of current flow is used. The foil strips separated by the slit are attracted together by the pinch effect when current is applied, tending to eliminate loss of foil through a jetting action during explosion. Platings are made by pressing the foil between the work piece and a plastic layer to which the foil does not adhere. In both bonding and plating, the capacitor is charged with energy sufficient to bring the foil just to its boiling point. This "tuning" is more efficient and minimizes heat and blast effects that might otherwise damage a small work piece.

Abstract: A non-woven material is applied to the surface of a woven scrim. The non-woven material is needle-bonded to the scrim. The composite structure is then embossed. The embossed pattern is placed by a heated embosser on the finished product and in the non-embossed areas, the heat of embossing causes the non-woven material to partially melt and assume a textured effect which mirrors the texture of the woven scrim.

Abstract: An improved adhesion between polyester compositions per se or metals using the isocyanate-type adhesive is obtained by first treating the surface of the polyester composition and/or metal with a first and a second treating agent without regard to sequence where the first treating agent is an organic polyisocyanate and the second treating agent is a tertiary amine.

Abstract: An apparatus is disclosed for receiving bags from a source thereof and applying them, in an imbricated manner, to two lines of pressure sensitive adhesive coated tape. The source normally being a bag making machine of the intermittant type wherein the delivery motion is provided by a crank arm providing, during 180.degree. of its cycle, a feeding or drive motion and during the remaining 180.degree. of its cycle, a dwell time. The apparatus in general comprises a transport system carried by a frame which system is driven in periodic synchronization with such a machine supplying the bags. An individual bag is transported from the source to a taping mechanism located at the end of the system. The taping mechanism secures the individual bags to the tapes during the dwell period of movement of the transport system to form a package. The package of imbricated bags can be festooned in a carton or wound on a roll.

Abstract: A heat sealing machine having platen means for melting at least a portion of the object to be sealed, said platen means being mounted on a carriage means for moving said platen means along at least a first axis, is described having the improvement wherein track means are provided for allowing movement of the platen means with respect to the carriage means along a second axis which is perpendicular to said first axis. Additionally, the present invention provides a pin means for fixedly engaging said platen means at a precise, predetermined position with respect to said carriage means, as well as providing for carriage and extension portions of said track means which provide for the quick interchange of platens from reserve to operating positions. Various features of the present invention allow for the preheating and prealignment of reserve platens, whereby substitution of the desired platen is safe, simple, fast and reliable.

Abstract: This invention relates to butt welding sheets of thermoplastic material. More specifically, this invention relates to an apparatus and a process for performing this operation in an improved manner by controlling the temperature of the means used to heat and cut sections of the thermoplastic material. The apparatus and process of this invention concerns switching means response to the length of the cutting means (the length being proportional to the temperature of the cutting means) which controls a power source used to pass current through the cutting means. The current produces heat due to the electrical resistance of the cutting means whenever the cutting means shortens due to a decrease in temperature. An increase of a predetermined amount in length of the cutting means, due to a proportional temperature increase, deactivates the heating circuit.

Abstract: The color-coded index tab is produced automatically by passing a tape through a label applying machine which is programmed by a computer to apply color-coded labels at precise locations of the tape. The tape is afterwards severed to produce the individual index tab for subsequent application to a file holder. The index tabs can be folded or not about the longitudinal center line so that the block of color on each label can be exposed around the edge of the file holder or on a flat edge surface of the file holder for viewing purposes. The individual index tabs and labels can be sized to present any number of different color coded blocks.

Abstract: A container article is formed from a stratified material having an inductively heatable layer. A first article part has a thermally joinable region. A second stratified article part, formed by coextrusion, has a layer containing an oxide susceptor. The container parts are assembled and subjected to an alternating magnetic field to heat the susceptor and thermally join the parts.

Abstract: Composite materials comprised of reinforcing filaments captured in an uncured resinous matrix are shaped and subsequently stacked by a technique which may be automated. The composite material, in tape form, is sandwiched between liners, the liners being selected or treated so as to exhibit an adhesion differential with respect to the tacky uncured resin, and the plies of the resultant multilayer article are thereafter cut, the upper liner removed and the plies stacked utilizing the ply-to-ply adherence.

Abstract: The assembly is composed of a framework having a longitudinal passage for receipt of a pipe to be wrapped and a number of crawler wheels which contact the outer wall of the pipe and which cause the framework to move longitudinally relative to the pipe. The assembly also includes brushes and wrapping assemblies mounted to rings which circumscribe the pipe. Rotation of the rings causes the brushes to scour the pipe outer wall and tape to unwind from the wrapping assembly onto the pipe. Hydraulic motors are provided on the assembly for powering the crawler wheels, brushes and wrapping assemblies. The hydraulic motors are activated by hydraulic fluid pressurized by pumps located remote from the assembly.

Abstract: An apparatus for applying severed strips of double-coated adhesive tape to a substrate from the face of a carrier liner. A length of tape having adhesive on both sides and disposed on a release liner is fed continuously past a severing means which cuts the tape into strips but does not sever the liner. The tape strips are then carried by the liner to an applicating member where the strips of tape are applied to a moving substrate.

Abstract: A transparency slide unit for use in projectors and viewers comprising a film diapositive mounted and positively retained in a frame composed of two separate and substantially uniform frame halves permanently interlocked in mutually offset positions by rivetting, and an apparatus for mounting film transparencies in such frames.

Abstract: An oriented array of small, fragile electrical devices such as beam lead transistors or integrated circuits, partially embedded in wax, are removed from the wax and transferred to a releasable mounting without disrupting the orientation of the devices. The releasable mounting comprises a plate with a layer of silicone rubber or resin which exerts a suction or vacuum holding force on the array of oriented devices.

Abstract: Thin walled sleeves of heat recoverable material are made by inserting the opposing edges of a length of heat recoverable material into a thermoplastic insert having incorporated therein a peroxide or other heat activatable crosslinking agent, placing a reinforcement comprising a foraminous member, for example, a strip of glass cloth, or other high melting material, of relatively open weave adjacent to the insert and in contact therewith, followed by heating the assembly to form a weld. Optionally, a combination of the foraminous member and film can be placed in contact with the insert.

Abstract: A labeling system for automatically fixing information bearing labels to articles includes: a conveyor belt; means for placing articles on the conveyor belt at a variable periodic rate; a source of labels providing labels at said periodic rate; and a label transfer wheel, coupled to the drive source, for fixing each of the labels from the source to a different one of the articles. The label transfer wheel has a cylindrical surface, a stationary chamber communicating with a vacuum source, and a plurality of holes on the surface which periodically communicate with the chamber to pneumatically hold labels as they are transferred from the label source to the articles.