Abstract: A method of fabricating double-curvature shells from meridional petaloid sections consisting in that the prefabricated meridional petaloid sections are joined consecutively with one another in a number required for making a shell. The meridional petaloid sections are made from a flexible material and in the process of their joining they are successively coiled into a spindle-shaped roll for storage and transportation and the double-curvature shell is made by applying an axial force to at least one of the roll ends for uncoiling the roll and simultaneously imparting a longitudinal curvature to said sections after which the first and the last sections are joined with each other. The method according to the invention permits fabrication of high-quality double-curvature shells of any volume from any flexible material, it is highly efficient, calls for low expenditures of labor and funds, is simple and convenient in practice.

Abstract: A method for making and applying to a dynamoelectric machine an adhesively bonded, irradiation curable, resin treated glass banding that retains a pre-stressed tension therein when the banding is subjected to a variety of mechanical vibration and temperature changes. The banding is applied in pre-stressed layers and is further characterized by having a substantially uniform thickness of cured resin between each layer thereof, in a range between 0.5 and 2 mils, despite any variation in the pre-stressing tensions applied to the respective layers of the banding.

Abstract: A method of making a scouring pad from a length of nylon fabric netting characterized by forming the netting into a tube-like configuration by rolling the netting around two spaced cylinders having unequal diameters, but axially spaced from each other, twisting the tube of netting to gather the netting in the location between the two cylinders, folding the netting onto itself by extending one cylinder over the other cylinder to form one end of the pad, removing both cylinders from the netting tube, wrinkling and tucking the netting toward the other end of the pad to form an inside core, gathering the outside netting around the inside core, and twisting and tieing the outside netting to form the other end of the pad. The scouring pad may be made from a single length of fabric netting or alternatively made from two separate differing colored lengths, thereby resulting in a two-toned pad wherein the color of the inner core netting and outside netting are dissimilar.

Abstract: An improved back-up tape for use in fusion welding metal sheets and structures is disclosed. The tape comprises a rolled refractory fiber fabric partially flattened against an adhesive coated surface of a wider, heat resistant, strip. In use, the tape is pressed against the back side of a joint or other weld line to be welded with the adhesive bonding the tape along strips parallel to but slightly spaced from the weld line and the roll pressed against the joint. Fusion welding is conducted without the addition of any filler wire. A flat weld underbead, with no molten metal drop-through is produced, with no melting or other significant change in the tape. The tape is then stripped off and the welded structure is ready for use.

Abstract: A one-step method of both making and tortuously shaping three component tubular articles is disclosed, the tubular articles being of the hollow skin-core type of the desired complex configuration, strong and rigid, free from porosity, light in weight, resistant to high and low temperatures, comprised of a thin and relatively fragile elongated and longitudinally edge-lapped sheet tube integrally encased in a strongly reinforced plastic shell providing both tube-forming support and tube performance protection for fluid conveying and storage applications. The tube-forming sheet can be of specialized rubbers or plastics or metallic foils. It is advantageously susceptible to inspection to the required degree before incorporation into the article and may be capable of subsequent in place modification.

Abstract: A turf-like product suitable for use as a golf tee surface is constructed of artificial turf units which are strung on a plurality of tie rods which are secured at both ends. Each turf unit comprises a number of superimposed layers of a polymeric tape having slits which are transverse to the length of the tape. Holes are programmed in determined frequency along the length of each layer by a heated plunger which passes through the layers of tape. The layers of tape are fused together at the circumference of each hole whereby integrity in the turf unit is obtained. The programmed holes are also used as a mechanical device to construct the pile surface by means of the tie rods. The superimposed layers may be formed by winding the tape on a skein winder.

Abstract: A boat hull is made by winding a layer of glass-fibre around a male mould, winding a layer of foam sandwich material on top of the glassfibre, and then winding a second layer of glassfibre on top of the foam.

Abstract: A coned joint for the purpose of structurally joining two filament wound es, having dissimilar diameters, into a single launch tube. After being joined together, the assembled tubes have a straightness equal to or better than a comparable rolled or fabricated metal tube in addition to being lighter and less costly to produce.

Abstract: Pharmaceutical dosage forms comprising an edible web having deposited thereon or at least partially thereon a particulate medicament, the webs being thereafter fabricated and finished to pharmaceutically elegant solid dosage forms having no medicament exposed on an exterior surface. The dosage forms have a consistency of release of medicament which can be controlled to exacting specifications. The disclosed solid dosage forms are prepared by high speed automated equipment and the process by which they are made is characterized by non-destructive quality control analysis and performance evaluation both conducted on-line and integrated into the manufacturing operation. Inclued in the scope of the disclosed invention are certain apparatus and methods of manufacture.

Abstract: Process and apparatus for fabricating a pneumatic rubber fender comprising a cylindrical body of a combination of a plurality of rubber and reinforced rubber layers, both of the terminal ends of which are closed so that compressed air can be sealed therein. In the fabrication process, the cylindrical body of a non-vulcanized rubber fender, one end of which is closed by a first end plate, is firstly formed on a fabrication drum provided with a cylindrical portion and an end plate portion closing one end of the cylindrical portion. The connection of a second end plate with an opened free end of the above-mentioned cylindrical body of the non-vulcanized rubber fender is carried out in such a condition that the above-mentioned opened free end is turned back while the cylindrical body of the non-vulcanized rubber fender is mounted on the fabrication drum.

Abstract: In a continuous method of making pipe from fiber elements coated with a thermosetting resin, the coated fiber elements are wrapped around a resin saturated conveyor tube which becomes an integral part of the finished pipe assembly. The method of manufacture employs a first mandrel section and a second mandrel section in alignment therewith and longitudinally spaced therefrom by a gap. A tube of resin-absorbent material is applied to the first mandrel section, a thermosetting resin is applied to the tube as it passes over the gap in an amount sufficient to saturate the tube. The resin is at least partially cured prior to its arrival onto the second mandrel section where it provides the conveyor tube for the application thereto of a plurality of bands of continuous fiber elements coated with a thermosetting resin composition.

Abstract: A leader strip is connected with a tape at one end of the tape; and the leader strip has characteristic lengthwise unit bending stiffness which is substantially greater than leader characteristic widthwise unit bending stiffness. Further, the overall width of the leader typically exceeds the overall width of the tape, and the edge portions of the leader are engageable with non-grooved inner walls of reel flanges to be frictionally retained in position between the inner walls. A magnetic tape transport is provided with two such reels between which the tape and leader are transported.

Abstract: A process is provided for the manufacturing of a hollow rotating body which process comprises mounting at least two wheels in a parallel fashion upon a shaft, placing a plurality of strips of glass fiber fabric along the outer circumference of the wheels, whereby an enveloping cylinder is formed, impregnating the strips with plastics or synthetic resins capable of subsequent setting, setting, applying helically layers of impregnated fiber strips tangentially to the cylinder mantle whereby the size of the walls increase, applying a reinforcing belt of wire or tape, applying a finishing coat of plastic or synthetic resin, whereby surface irregularities are smoothed, setting, and mechanically treating the surface to remove irregularities. An apparatus for accomplishing this process is disclosed.

Abstract: A hollow resin bonded glass fiber column of unique cross section suitable for use as a utility pole, light standard or the like is disclosed including unique means for forming the pole. A rotatable finned mandrel is wrapped with a waxed surfaced paper and then sprayed with a mixture of chopped glass, resin and catalyst which is initially pressed thereon by a roller and then wrapped with continuous bands of fiberglass roving, re-rolled, covered with a fiberglass veil, rolled again and allowed to cure. The finned mandrel which makes relatively thin line contact with the inside of the pole and the wax surfaced paper allows the curved pole to be easily slipped endwise from the mandrel. In one embodiment a metal mandrel having eight radially extending fins has been successfully used to form fiberglass poles of octagonal cross section.

Abstract: A film strip of a thermoplastic synthetic resin, as a bag or package material, is continuously supplied from an extruder to a printing machine, bag-making machine, packaging machine, or like machine.The material film strip supplied from the extruder at the initial stage of operation thereof is first led to and wound by a winder means, and then fed to such machine. The apparatus is provided with means for shifting the strip from one travel course to another.

Abstract: A process of wrapping a substrate to insulate or protect it, wherein a tape comprising a cross-linked copolymer derived from an ethylenically unsaturated hydrocarbon and a carboxylic acid ester having ethylenic unsaturation is wrapped around the substrate, and subsequently shrunk. Although the tape is cross-linked, it nevertheless fuses sufficiently to bond to itself to form an integral structure. The substrate can if desired be removed, the tape serving as the inner layer to a hose.

Abstract: Shaped insulation material is formed by passing a porous envelope containing insulation material such as that comprising silica aerogel and an opacifier through a series of rolls followed by making the shape so formed rigid.

Abstract: An insulating blanket is disclosed in which a semi-rigid mat of glass fibers is bonded on one side to a facing material. Lateral cuts are formed in the mat extending from the opposite side thereof toward the side on which the facing is bonded. Such cuts allow the facing to bend with a hinge-like manner when the insulating blanket is rolled, permitting the lamination of the facing and mat and the rolling of the laminate prior to the setting of the adhesive. The preferred method and apparatus for forming such insulating blanket is also disclosed.

Abstract: A method of insulating tubing comprising the steps of providing the tubing with a jacket of insulating material in web form, fixing the jacket with regard to its described diametrical dimensions, e.g. with a fixing casing, enclosing the jacketed tubing in a continuous tubular outer casing, e.g. by applying relative movement in the longitudinal direction thereof, and subsequently breaking the fixed state of the jacket, thereby to enable the latter to conform in shape to the inner wall of the outer casing.

Abstract: A metallic laminate of the type comprising sheet metal, such as galvanized sheet steel, and aluminium foil, with an interposed thermoplastic, such as polyethylene, which, under heat and pressure, adheres to the foil and sheet metal, has its bond strength substantially increased winding it as a coil under tension, the laminate being heated, before and/or after coiling. Subsequently the coil, while clamped radially to prevent relative movement of the coil convolutions, is cooled from the outside, the coiling under tension, the heating and the cooling all causing inter-layer pressures in the coil which, with the heat, bring about a useful increase in the bond strength.

Abstract: The invention relates to a process and an apparatus for the production of wound sandwich structures, wherein the inner shell, made of a galss-reinforced plastic, is prepared in a known way, then solid core elements are wound onto the inner shell, and finally an outer shell, made of a glass-reinforced plastic, is formed on the wound core. Thus rigid articles (e.g. containers), consisting of inner and outer shells of glass-reinforced plastic and a core of wound core elements, are obtained. The core elements are wound up by forwarding the individual elements directly one after another onto a thread which carries the core elements, presses them onto the rotating mandrel, and is also wound up, or by forming a flexible band by adhesion, from the core elements and the carrier thread or band, and this flexible band is wound up. The inner and outer shells, and the surface of the core material are prepared preferably on a conventional winding machine, provided with auxiliary equipments according to the invention.

Abstract: Surgical sponge material is unwound from a spool and fed onto a horizontal support where it is cut to the proper length, folded once by means of a vertically reciprocable mandrel, and held in an upwardly open cavity between the two tines of a rotatable fork. The fork rolls the sponge in a cylindrical portion of the cavity to form the sponge on the tines of the fork. A pusher strips the sponge from the tines of the fork and moves it into a trough where an ultrasonic welding horn seals the free end of the sponge material to prevent it from unraveling. The sponge material is preferably woven from cotton or the like but includes one or more synthetic threads of thermoplastic material to facilitate the ultrasonic welding step.

Abstract: A process for manufacturing tennis racket frames including lining the contoured mold cavities of a mold with layers of predetermined oriented plastic strip material, encompassing elastic inflatable tubes in said mold cavities with superimposed layers or applications of unidirectionally and diagonally oriented prepreg material, positioning the tubes in the mold halves, inserting a hard foam member in the mold cavities in space bounded by each of the tubes, folding the first layers of prepreg material over the hard foam member, closing the mold halves, and polymerizing the prepreg material layers under heat and pressure so as to form a molded tennis racket frame.

Abstract: .Iadd.An elongate closed flexible integral plastic film tube for use in making reclosable bags with the tube having first and second interlocking rib elements and first and second groove elements on the surface thereof each shaped for cooperative pressure engagement and forcible separation between the ribs and grooves with the elements spaced apart from each other in both circumferential directions and the film at one side of the elements for forming the body of a bag formed from the tube and the film at the other side of the elements providing a flange forming portion. The elements are spaced so that the bag portion is wider than the flange portion. .Iaddend.