Abstract: A method and apparatus for the production of a composite sheet material and a material produced thereby are described, a typical product being a lightweight permanent or temporary formwork sheet of accurate thickness and parallelism made from material including glass fiber reinforced cement. A base or mould is moved through successive stations at which uncured but curable material is deposited in layers thereon. At least the final layer is consolidated by a local surface treatment with a vibratory screeder, the influence of which spreads through the material to promote intimate bonding together of the uncured layers. In a preferred form, the material comprises three layers, the first and third being of glass fiber reinforced cement and the central second layer being of cementitious material including a lightweight aggregate such as hollow microspheres.

Abstract: Compatible blends of polymers are disclosed which contain (a) a high density ethylene polymer or an isotactic propylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (d) a tackifying resin such as a terpene resin.

Abstract: A method of producing a molded leather holster capable of holding the holstered item in the holster by friction or pressure due to the molding and which is capable of retaining its molded shape in the presence of moisture, the method comprising preparing a laminate of at least one layer of leather and a layer of a heat moldable thermoplastic material, heating the laminate to the molding temperature of said thermoplastic material, inserting a forming core inside said holster and applying pressure from the outside of said holster while said temperature is reduced to a level below the molding temperature.

Abstract: Compatible blends of polymers are disclosed which contain (a) a low density ethylene polymer, (b) a copolymer of ethylene and an alkyl ester of acrylic or methacrylic acid or vinyl acetate, (c) an ionomer resin, and (4) optionally a tackifying resin such as a glyceryl ester of a rosin acid.

Abstract: Blends of thermoplastic polymers which may be coextruded to form bonding layers in film laminates contain (a) a copolymer of ethylene with a lower alkyl acrylate or methacrylate or vinyl acetate, (b) a chlorinated ethylene polymer and optionally (c) a tackifying resin.

Abstract: A process for applying a cover layer based on thermosetting resin to objects of thermosetting resin.The process is characterized in that a shape imparting support face is heated to a temperature of 90.degree.-200.degree. C. and then is provided with a cover layer of a thermosetting resin with catalyst. After hardening the cover layer and cooling below 90.degree. C. a basic layer thermosetting resin is applied and hardened.

Abstract: Two component polyurethane soles for footwear are molded continuously in an apparatus including a turntable with a plurality of mold stations therearound. While a first sole portion is being molded at one mold station, a second sole portion interconnecting the first sole portion to a lasted upper is molded at the same mold station. Such simultaneous molding is achieved using a mold bottom or top which retains the first sole portion and with such first sole portion forms part of the mold for forming the second sole portion. The second sole portion mold is completed by mold sides and a lasted upper.

Abstract: A process and apparatus for making a plurality of building modules each having a foam core encased in a shell of fiber reinforced cement. A bottom layer is cast and fiber reinforced in a casting zone having side rails along a base and division members corresponding to the lengths of the modules being formed. End members are placed on top of the division members and foam cores are placed on the bottom layer between end members leaving free space between the core member, the side rails and the end members. Wet cement is applied to fill the free space surrounding each core member and to form a top layer which covers each core member thereby separately encasing each core member. Fiber reinforcement is applied to the top layer and a plurality of cured modules are removed from the casting zone.

Abstract: A process for the accurate generation and production of electrical lead lines and the like on a charge plate for use in an ink jet printing system is provided. In the process, a single master charge plate is utilized both as a model to produce molded charge plate blanks and also as a mask for generating charge plate artwork. Because the same master plate is utilized, any minor variations in the size, spacing, or alignment of orifices on the plate will be duplicated for both the blank, molded charge plate structure and the electrical artwork, permitting accurate alignment of the artwork to the orifices in the blank.

Abstract: A composite module having a rigid foam core encapsulated in a shell of reinforced cementitious material. The shell is reinforced with at least two types of material, the first being a fiber reinforcing material distributed in an interconnected random matrix substantially throughout the shell and the second being a scrim reinforcing material adjacent at least one surface of the shell and/or the rigid foam core.

Abstract: Reinforced facings, including reinforcing webs entrained in hydraulic cement via a slurry bath, adhere to a nailable lightweight aggregate cementitious core to form a panel web. The reinforced web is formed on abutting conveyed carrier sheets, and the web is transversely cut, between the sheets, while moving or when stopped, in response to sensing of the sheets. The cut panels, on respective sheets are stacked for curing without damaging the panel edges and in a manner to minimize panel flex. Slurry bath, facing applicators, and cutter and stacking apparatus are included.

Abstract: The present invention involves a method of making foamed ceramic building elements by coating the bottom of a mould with a layer of uncolored glass material, applying a layer of colored glazing material over said layer of uncolored glass material and charging an expandable mass to the mould over said layer of glazing material.

Abstract: The present invention is concerned with a method for the manufacture of objects having two shaped surfaces from setting material such as cement and gypsum mixtures. In this method a discrete quantity of the setting material is applied to a mold portion having a surface corresponding to one of the shaped surfaces of the object and is permitted to set therein. The improvement of the invention comprises the application of a discrete quantity of the setting material also to a mold portion having a surface corresponding to the second shaped surface of the desired object. The two mold portions are then brought together to form a mold while the setting material contained therein is still shapable. Hereby the quantities of shapable material are pressed against each other to form the desired object. The latter is then separated from the mold portions.

Abstract: Structures such as the shell of a boat are formed in a ferro-cement laminate composed of a fiber glass reinforced skin and ferro-cement with a coupling between the fiber glass layer and the ferro-cement that consists of fabric connector tapes that are bonded to the fiber glass and that have projecting wires which are secured to the armature wires of the ferro-cement. The structure is fabricated with the molding of the fiber glass skin with the connector tapes bonded thereto and the connector wires projecting therefrom. Thereafter, the ferro-cement armature is fitted within the molded shell and the connector wires secured thereto, and the cement is poured and shaped. An epoxy adhesive bonds wet cement to the cured fiber glass resin impregnant and armature wires and also fills any voids in the poured cement.

Abstract: A method of making a pre-cast concrete building panel wherein a sheet of hardboard is soaked in water, and while it is still wet, it is covered with a thin skin of concrete and there is formed a peripheral edge region of concrete to embed the hardboard edges. The subsequent drying out of the concrete and hardboard has the effect of binding together the hard-board and concrete, and pre-stressing the concrete.

Abstract: A plastic foam core concrete plank and the method of making same is described which employs foamed plastic core forming members positioned on an initial layer of concrete in a forming pallet and held translationally and vertically in position relative to the initial layer of concrete as a top layer of concrete is poured into position around and over the core members to complete the slab. The core members have a plurality of discontinuous recesses extending from one surface thereof which are exposed to the lower or initial layer to create voids in the slab for light construction and to decrease the thermal transmissions therethrough.

Abstract: A decorative coating layer, unified with the succulent and fragile surface of a concrete board, is formed by a method comprising laminating an inorganic and hydraulic coating material on the surface of an unhardened concrete board placed in a mold, and immediately thereafter heat-curing the thus coated concrete board. According to this method, beautifully dressed precast concrete boards can be mass-produced by a shortened process with improved efficiency of operation.

Abstract: A process and apparatus for making a plurality of building modules each having an insulating foam core encased in a shell of fiber reinforced cementitious material. A longitudinal casting zone is provided having continuous side rails and end-to-end base members having lengths corresponding to the lengths of the modules being formed. A continuous bottom layer of fiber reinforced cementitious material is cast over the base members and extending the length of the casting zone. The bottom layer is divided into lengths and lateral end members are inserted between the side rails in the spaces between the divided bottom layer lengths. A foam core is placed on each bottom layer length and wet fiber reinforced cementitious material is successively applied over the entire length of the casting zone so as to fill in the free spaces surrounding each core member and cover it with a layer of cementitious material thereby completely encasing each core member.

Abstract: A cement panel reinforced with fibers comprising a base plate composed predominantly of inorganic fibers and a cement, an inner waterproof layer of a synthetic resin formed on a surface of the base plate, a coloring material layer composed predominantly of a cement and a pigment and formed on the inner waterproof layer, and a surface waterproof layer of a synthetic resin formed on the coloring material layer. The synthetic resin of the inner waterproof layer, having penetrated into both the base plate and the coloring material layer and solidified, gives a fastener effect, bonding them together.

Abstract: For inclusion as spacer between first and second axially spaced apart members mounted for limited angulation about a common axis, the first member having a seal recess formed in one face, the second member having an end face opposite the seal recess, the improvement of: a laminated torsielastic bushing arranged in one piece, and in the recess.

Abstract: A structural element of concrete is selectively reinforced over that part of the surface where, when the element is loaded, tensile stresses can occur which might exceed the tensile strength of the concrete. The reinforcement comprises a relatively thin, integral external layer preformed from a cement composition reinforced with fibres disposed in a random two-dimensional distribution essentially parallel to the surface of the layer, the latter extending over the whole area of said part of the surface liable to tensile stress.

Abstract: A structure defining an upwardly opening tray is provided and initially filled with a hardenable mixture compactable to at least a reasonable degree and a grid is thereafter introduced into the tray and depressed downwardly into the hardenable mixture to a level spaced above the bottom of the tray and with upper portions of the grid projecting above the mixture. A second hardenable mixture is thereafter introduced into the tray within the openings formed by the grid and on top of the first mixture to a level substantially flush with the upper surfaces of the grid. A male die including coplanar spaced die members snugly receivable within the voids or spaces defined by the grid is positioned with the spaced die members in registry with the openings or spaces defined by the grid and forced into the spaces or openings so as to compress both mixtures within the tray.

Abstract: A method of making cementitious blocks wherein the blocks are provided with a facing of colored material. A mold is provided which leads itself to do-it-yourself application for the manufacture of faced blocks.

Abstract: Cellular lightweight concrete slabs are manufactured by cutting a still plastic block of cellular concrete mass resting on a first support horizontally into slices which are then moved over one by one to a second support and piled in reversed order thereon, at least one of the two broadsides of each body slice being subjected to a treatment before being covered by the next transferred slice. The treatment prevents the body slices from cementing together during the subsequent steam-hardening process and may also improve the quality of the slabs when hardened. An apparatus for such manufacture features a movable suction head for transferring the body slices as well as associated means for cutting and treating said slices.

Abstract: A sintered, fine grained, polycrystalline, essentially fully dense, essentially single phase Cr.sub.2 O.sub.3 body is prepared by sintering Chromium Sesquioxide (Cr.sub.2 O.sub.3) at essentially the equilibrium oxygen partial pressure (P.sub.O.sbsb.2) for the formation of Cr.sub.2 O.sub.3 from its elements at the sintering temperature. To achieve optimum theoretical density a second metal oxide dopant such as MgO, capable of controlling the grain size, is added.In addition, Cr.sub.2 O.sub.3 bodies are rendered more stable, and thus have a longer life, by maintaining over the body an atmosphere which is essentially equilibrium P.sub.O.sbsb.2 for the formation of Cr.sub.2 O.sub.3 from its elements at that temperature.

Abstract: A contruction member, usable in exterior or interior walls, ceilings or floors, including: a stiff, planar, can-supporting panel or board; cylindrical or otherwise non-rectangular, parallel-axes cans having end covers fixed to the panel or board, these cans being preferably of metal but optionally of dense, strong plastic or glass, of the new or used type, having lengths that are less than twelve times their diameters; optional insulation inside the cans; large-mesh metal or plastic fencing, fixed to can ends; and porous, insulating, strength-providing adhesive material around portions of the can sidewalls, bonding and bracing the cans together into a bar, panel or block, part of this material being in layers within recesses of the can-end covers that are spaced from the panel or board.

Abstract: The present invention relates to a process for producing a large architectural precast concrete panel for use in outside walls and applicable to the curtain wall technique of architecture, wherein a resinous substance and an inorganic material are placed in a mold, then a hydraulic cement composition is placed on the layer of above mixture. The polymerization of the resinous substance and the hydration of the cement composition are carried out in the mold simultaneously. A particularly preferred process employs the following critical conditions:1. The viscous methyl methacrylate syrup is one obtained by mixing about 100 parts by weight of viscous methyl methacrylate syrup with from about 0.5 to about 15 parts by weight of a radical polymerizable cross-linking monomer having .alpha., .beta.-unsaturated groups to obtain a resin solution;2. The particle size of the aggregates is between 0.6 and 15mm diameter;3.

Abstract: The disclosure relates to load-bearing reinforced concrete members, such as beams, slabs, shells, panels, walls, or like members provided with a moisture and damp proof insertion embedded in the concrete substantially within the entire expanse of the member.

Abstract: Shaped articles such as tiles and panels are produced from aqueous slurries of hydraulic cement, with or without aggregate, to which "super" water reducers have been admixed, by casting in a synthetic polymer mold with glossy, water-repellent surface, to yield castings with highly reflective, glassy surfaces. Color pigments may be added to the formulation to yield castings with reflective, glossy colored surfaces.

Abstract: A construction panel and a method of making the same wherein a layer of concrete is bound to a layer of urethane or polyurethane through a blanket of dry cement mixture and the in situ setting into a mold of a wet cement mixture and an unset foaming plastic composition. The latter includes urethane or polyurethane, a catalyst, and a blowing agent, the dry cement mixture includes white cement, silica, a coloring agent, and an aggregate, and the concrete is formed from the same dry cement mixture with water.

Abstract: Thermoplastic materials, particularly material in sheet form, may be sealed or thermowelded together using the energy from a single laser beam source by splitting the beam and directing it by mirrors to desired seal areas on the opposed sides of the materials to be sealed. The beam may be split in proportion to the thickness of the respective materials. Heating the opposed sides of materials to be sealed avoids the problem of overheating or burning the side to which energy is applied.

Abstract: A process is disclosed for producing composite sheeting of polystyrene having a thin protective layer of vinylidene fluoride polymer. The process comprises joining a molten stream of each polymeric material in a single extruder discharge conduit such that there is produced a single molten stream having a reasonably well defined interface between the two types of polymeric material, and thereafter, passing the resulting single stream of material through a sheet-form extrusion die having its die lips generally aligned with the foregoing interface.

Abstract: Methods for forming a composite ring having unidirectional filaments embedded in a polymer matrix is disclosed. The filaments are spirally wound within the ring to form a plurality of essentially circular hoops which are in coaxial alignment with the expected lines of principle force. In one embodiment the formed ring is structurally integrated into the rotor of a gas turbine engine to reinforce the rotor and to restrain the rotor blades which extend outwardly of the ring.

Abstract: A construction system for constructing multistory buildings is disclosed. Concrete joists are poured in place, using high-strength concrete. The concrete is poured into a removable, reusable ganged-form structure. The sides of the joist forms swing away from the joists after the concrete is set. Monolithic slab soffits, comprising an underlayer of gypsum board and an overlayer of concrete are pre-cast and moved into place to connect the joists before pouring of the joist concrete. The combination of pre-cast soffits and poured-in-place joists permits rapid and inexpensive construction of the multiple floors of a building. Alternatively, the slab soffit may be poured in place, in the same pour as for the joists, by placing fire-resistant boards between adjacent joist forms, thereby eliminating the need for cleaning any form work in those areas.

Abstract: There is disclosed a thermoplastic, film-forming composition comprising a blend ofA. a propylene-ethylene copolymer, the propylene content of the copolymer being from 95 to 99.75% by weight of the copolymer, andB. a polymer of an alpha-olefin of 4 to 10 carbon atoms copolymerized with from 0 to 10% by weight of the copolymer of an alpha-olefin of 2 to 10 carbon atoms,The alpha-olefin polymer constituting from 41 to 90% by weight of the composition.The propylene-ethylene copolymer preferably contains from 2 to 4% by weight of ethylene, and preferably, in granular form, exhibits a Melt Flow Index of from 10 to 200 g/10 minutes, measured according to ASTM/D1238-65T (Condition N).The alpha-olefin component of the blend is suitably a polymer, preferably a homo-polymer, of butene-1, and suitably has a Melt Flow Index, by the aforementioned test, of less than 50 g/10 minutes, preferably between 5 and 40 g/10 minutes.