Abstract: A method of manufacturing a mold adapted to be used for casting bodies of fiber-reinforced composites. A model of the body to be cast is prepared and coated with a one-piece dense shell of refractory metallic oxide deposited by plasma or flame spraying and the model is then separated from the shell by conventional physical or chemical treatment.

Abstract: The invention concerns metal cages for set screw--cage systems intended to be mounted on a metal sheet accessible from only one of its faces. According to one aspect of the invention, the sidewalls 4 of the cage 3 of such a system are provided with an annular rib 16 projecting radially outwards, the external diameter of cage 3 at the rib 16 being slightly greater than the diameter of the hole 12 in which the cage is engaged, owing to which the cage is axially locked on the metal sheet. Dies are provided for the shaping of cage members. The invention finds application particularly in the fitting out of the bodies of vehicles.

Abstract: A wall structure comprising a multiplicity of elongated wall panel forming members and elongated wall periphery forming members. The wall panel forming members are constructed to extend in horizontal courses with alternate courses being formed of siding elements and bar elements. Each siding element includes panel defining opposed faces simulating logs, opposed side portions having elongated grooves therein and opposed end portions having recesses therein forming lap sections. Each bar element includes opposed panel defining faces simulating mortar, opposed side portions having elongated tongues thereon of a size to engage within the elongated grooves in the side portions of the siding elements and opposed end portions having recesses therein forming lap sections similar to the lap sections in the end portions of the siding elements. The elongated periphery forming members include elongated corner, base plate, and top plate elements.

Abstract: Method and apparatus for cooling a gaseous mixture wherein a fractional condensation of said mixture is carried out under a high pressure by using at least a first stage and a last stage of fractional condensation, the penultimate and the last condensed fractions are expanded down to a low pressure forming a main refrigerating stream, and at least the first condensed fraction of the cycle mixture is expanded down to an intermediate pressure between said high pressure and said low pressure forming an auxiliary refrigerating stream.

Abstract: An annular gasket for use in the moulding of ophthalmic or optical lenses of organic material, comprises two axially spaced ridges on its inner periphery arranged to cooperate tightly with two mould shells.At least one of the annular ridges is formed at the end of an elastically deformable annular flange extending around the inner periphery at an angle to the axis of the gasket. The flange projects both from a corresponding transverse face of the gasket and from its internal peripheral face.

Abstract: A support device for pressure measuring instruments in the air intake of a urbojet having support arms disposed in a plane perpendicular to the longitudinal axis of the air intake, being secured at one end to the turbojet housing and joined in pairs at their other ends by a fusiform body and converging in such pairs upon a radius. The inner joined end of one arm of each pair constitutes a fork, while the inner end of the other arm of each pair constitutes a fork, and the stud and fork form a bore in which is received a threaded interlocking component formed as a fusiform part at its two extremities outside the fork and stud.

Abstract: Caffeine is extracted from solutions thereof with supercritical carbon dioxide having a density of at least 0.85 g/ml.

Abstract: The invention relates to a process for the production of bases for tarts or pizzas from pastry of the dough type and a tool for carrying out the process.According to the process the dough is kneaded, divided into lumps, the lumps thus formed are left standing for a short period, flattened, are subjected to a single rise and the bases thus formed are baked, characterized in that the flattening operation is carried out directly without preliminary rolling or rising. The tool shown in FIG. 1 comprises a stamp and a die receiving a lump on its support and means for forming a cushion of air between the stamp and the dough.

Abstract: This invention relates to a rotary joint device with multiple piping passages and piping 3,4 eccentric to the axis of rotation X--X of the rotary joint, comprising stationary 1 and rotary 2 portions as well as a coaxial rotary member 7 interposed between the stationary 1 and rotary 2 portions and traversed by conduits 8,9 communicating permanently with the stationary conduits 3a, 4a of pipings 3,4 and with the rotary conduits 3b, 4b of pipings 3,4 through a connecting path 10,11.

Abstract: In a method of welding together two submerged pipe ends, the pipe ends are spaced apart and introduced through orifices into a receptacle by which they can be isolated from the surrounding medium. The spaced pipe ends are connected by a connection sleeve and after isolation are welded to the connection sleeve.

Abstract: The following specification describes a panelboard assembly comprising a plurality of modular insulators each having an integrally formed resilient bead for engaging a circuit breaker housing recess to support a circuit breaker. A tongue on each insulator assists in disengaging the circuit breaker from the bead. Longitudinally extending bus bars are supported by the insulators in heat transmitting relationship to the metal wall of an enclosure. The insulators have long surface paths between adjacent bus bars and bus stabs to prevent electrical leakage. A neutral assembly in close space saving relationship to the bus bars and for convenient wiring is provided together with partition walls between phase bus bars and between individual bus stabs.

Abstract: An optical observation instrument including on the one hand a mounting in which are mounted a convergent objective lens and a convergent eyepiece and on the other hand a disc formed of optical fibers arranged so as to reverse the image given by the objective lens and connected to the mounting by way of an articulation and held in a stable position, the front face of this disc being substantially at the focus of this objective lens.

Abstract: A device for automatically taking off elements drawn or formed on pieces carried by a moving support and for displacing and depositing the taken off elements on a take-up conveyor, wherein said device comprises at least one arm mounted to rotate on a shaft located between the support for the elements to be taken off and the take-up conveyor on which the taken off elements must be deposited, said arm bearing a taking off member, in principle a suction disc, mounted so as to be able to be oriented and displaced with respect to said shaft, means for driving said shaft in rotation, means for orienting and displacing the taking off member with respect to said shaft and means for controlling these latter drive means provided and arranged to ensure, in synchronism with the movements of the piece support and of the conveyor taking up the taken off elements, the taking off of all the elements formed on each piece and the deposit thereof in parallel and regular arrangement on said take-up conveyor.

Abstract: An in vacuo spark generator for the spectral analysis in the ultraviolet of a sample acting as an anode, with a coaxial annular cathode cooperating with the anode and an electrode for the formation of initiation sparks the operative portion of which is disposed opposite the outer side surface of the cathode and set back relative the frontal face of the cathode, the cathode frontal face being rounded and the opposite portions of the cathode and the initiation electrode being provided each with removable snap-rings slightly protruding relative to the body of the cathode and initiation electrode; said snap-rings are housed in a semicircular groove provided in the body of the cathode and the initiation electrode.

Abstract: An instrument adapted for collapsing the extended arms of a T-shaped intrauterine device and loading the collapsed device into an insertion tube is disclosed.

Abstract: A method and composition for forming a thin film of evaporation retarding agent upon a water surface by applying to the water, solid macroscopic particles of a saturated, aliphatic, interface-active hydrocarbon in solid solution with a spreading agent, e.g., a polyethylene glycol, that is soluble in both water and the hydrocarbon. Preferably, the particles are admixed with solid macroscopic particles of a filler material capable of generating a gas upon contact with water and compacted into a tablet, pellet or other solid unitary form for application to a water surface.

Abstract: An emergency two-way shut-off valve comprises a housing and two valve members having openings therethrough which when the valve members are spaced apart, permit flow of fluid through the valve but, when the valve members are pressed together, are blocked off by imperforate portions of the valve members. Both valve members are movable and spring-urged apart towards respective stops within the housing.

Abstract: A rotary internal combustion engine is provided with a central housing having a plurality of cylinders radially disposed around the housing. The cylinders are disposed about the housing such that reciprocal movement of pistons inside of the cylinders results from rotational movement of the central housing about a stationary center axis, so that the pistons are not brought to an instantaneous stop at a point in their cycle at which a 180.degree. change in direction occurs. By not having to overcome such inertial forces, a substantial increase in energy output is achieved. The rotating housing is mounted on supports to stabilize the engine and transmit rotational movement to a driven device. The exhaust output of the individual cylinders is directed outwardly to provide additional torque in the form of a jet action.

Abstract: A sling has an indicator device which automatically registers the maximum permissible load which can be carried in accordance with the instantaneous angle of inclination of the strands of the sling.