Abstract: A method of manufacturing a shape from a composite material by applying laminations impregnated with plastic resin to a positive mold. At least one cellular, cellular-core layer is applied into the neutral zone of the laminations and embedded into them while the laminations are being built up. The cellular layer is a rigid foam. The cellular-core or honeycomb layer has the axis of each cell radial to that of the shape and can be single, double, or multiple. If double or multiple it may have an interior connective layer consisting of plastic, foil, glass cloth, non-woven carbon-fiber fabric, polyimide, or woven or non-woven fabric impregnated with plastic resin. The cellular-core or honeycomb layer is intended to make the shape more stable and flexurally strong.

Abstract: A method and an apparatus are described for making a filamentary web. One or more strands of roving, each composed of multiple filaments, are spread out to increasing extents until the filaments form a band in which they extend unidirectionally and generally parallel to each other, but are not connected with one another. Adhesive strips, threads or other connecting elements are then transported on a carrier into a working station so as to be positioned transverse to the elongation of the band. In the working station, they are transferred to the band and joined to the filaments under application of contact pressure in the nip between cooperating nip rollers. This converts the band into a unitary filamentary web structure in which the filaments are all unidirectionally oriented.

Abstract: The invention relates to a laminate reinforcement for fibre-reinforced sunthetic resins and has for its object to provide a laminate reinforcement of highly resistant and high elasticity modulus fibres for extremely heavy-duty, yet light-weight and indent-resistent floating bodies and provides to that purpose such a reinforcement in which the laminate reinforcement is obtained by means of at least two parallel tissue tapes forming by their tissue seams a paunch gap, which is covered with a similar, but narrower covering tape, doubling of the reinforcing fibres in the area of the paunch gap in parallel relationship producing a Stringer effect, in which the warp and weft yarns of the tissue tape are made from reinforcing fibres having a higher elasticity modulus and a higher specific tensile strength than glass fibres, said fibres consisting of carbon, aramid, boron fibres or the like, the warp yarns of carbon and aramid being in intimate contact with one another and the weft yarns of aramid or carbon being spa

Abstract: A rubber scraper is slidably received in a guide frame. A horizontal cross member supports the bottom edge of the scraper. Counterweight assemblies are attached to the ends of the cross member and function to raise the scraper through the frame toward the underside of the conveyor belt to be scraped. The counterweight assemblies each include a counterweight running in a downwardly curved guide so that, as the weight of the scraper diminishes due to wear, friction and the support of the curved guide acting on the weight gradually decreases the force with which the counterweight pulls on the cross member, thereby ensuring that the scraper applies a generally constant pressure against the belt.