Abstract: The invention concerns the centering, the guiding and the correction of shape of liquid streams of different metals. A series of various and different electrical conductors A, B, C, D, even in number, are disposed along generatrices of a prism whose axis X coincides with the axis to be imposed on stream V. High frequency alternating currents opposite in direction are passed along two successive conductors. Application to different types of casting in particular.

Abstract: The invention relates to an injection internal combustion engine.The engine has a device for injecting fuel, preferably at high pressure, into the cylinder of cylinders, a device adjusting the injection advance in dependence on the load, and a controlled ignition device, the said engine being arranged to use a fuel other than a petroleum product, preferably an alcohol based product, and being characterized in that its dimensional characteristics are determined to supply a volumetric compression ratio between 12 and 20, preferably between 15 and 18 and in particular close to 16, and in that the device adjusting the injection advance is such that it supplies, at least for starting, a high value of advance, particularly of the order of 180.degree..

Abstract: A method and apparatus for manufacturing articles made of paper, plastic and the like from n series of strips of such materials is provided wherein n represents the number of strips and is an integer equal to or greater than two. Initially transverse perforations are formed at regular intervals in each of the strips to define in each strip a plurality of elementary sections having the same length L. The strips are then superimposed such that each perforated strip is offset with respect to an adjacent strip in the longitudinal direction by a distance equal to L/n. Thereafter the apparatus which performs the method exerts, successively and independently, on each of the successively superimposed strips a pulling and tearing off action to define the longitudinally offset superimposed perforated strips into separate elementary sections.

Abstract: The invention concerns a process and a device for roasting an agro-food product in the form of grains.The process consists of fluidizing an auxiliary body in the form of fine solid particles in an enclosure 1, and putting the grains of the product to be roasted in flotation in the fluidized bed of particles of which the temperature is adapted to roasting, to generate the roasting by the effect of the shocks of the fine particles of the auxiliary body with the grains of the product.The invention can be applied particularly for the roasting of grains of a product such as coffee, cocoa, etc.

Abstract: The process enables the simultaneous production of hydroxytelechelic polymers and oligomers by the radical route. At least one ethylenically unsaturated monomer is polymerized in the presence of hydrogen peroxide under the effect of ultra-violet radiation. The polymerization is carried out in a diluent medium comprising essentially an alcohol. The process can be operated to produce polymers having average molecular weights between one hundred and one million and to produce selectively unimodal, bi-modal or multi-modal distributions of molecular weights.

Abstract: Thin monocrystalline like layers and articles comprising such layers as well as methods of making the layers and articles are disclosed. The layer have a thickness on the order of a micron and have a surface area on the order of 1 cm.sup.2. The layers are made out of a given material and are grown on a layer made of a material different from the given material which rests on a crystal mass made of either the same material or of a material having the same or a related structure as the crystal to be grown.

Abstract: The invention relates to a microwave applicator intended to radiate a uniform power intensity to an elongated zone of which the frequency is in a predetermined range situated around a central frequency F. This applicator includes a wave guide 1 provided with a plurality of resonant slots 4 of which the centers are separated by a distance of an even number of half wave lengths .lambda.g/2, if .lambda.g is the length of guided wave corresponding to the central frequency F. The shunt slots are aligned on a longitudinal axis situated in an axial plane of the guide and are each associated with an inside post arranged in the guide on the transverse axis of said slot, so that the various slots radiate with essentially uniform amplitude. The wave guide is provided with outside posts of adjustable height penetrating into each inside post through the guide and flanges rising above the guide at the periphery of the face provided with shunt slots.

Abstract: A device for mitigating the splashing of droplets of molten metal during the pouring of same into a mould comprises a strip or strips of material which form a system of polygonal cells. The device is for vertical location with the strips edgewise in the base of a mould and fulfills the function of either a splash-guard when casting direct or a float when bottom-casting.

Abstract: Textile strands or threads with no twist at least partially coated by wax are formed by immersion in a molten wax while in a false twisted state. The coated strands or threads are then cooled and the wax solidifies.

Abstract: The extraction electrode consists of a metallic screen provided with an opening and placed within a vacuum chamber in front of an ion source, the screen being brought to a negative potential with respect to the source. Displacement of the electrode is controlled from the exterior of the chamber by two mechanical systems for independent displacement of the two lateral sides of the screen. Each system comprises a deformable parallelogram pivotally coupled to a member for supporting one side of the screen and to a member which is slidably mounted on a guide column, and a mechanism for controlling the deformation of the parallelogram by means of a link-arm rigidly fixed at one end to a toothed wheel in mesh with an endless screw and control rod which is accessible from the exterior of the chamber. The invention is primarily applicable to the construction of ion implanters, especially for the fabrication of semiconductors.

Abstract: A vaccine for epidemic influenza. An antigen and compositions comprising same which create antibodies in animals and humans effective against Hong Kong subtype influenza. Methods for creating virus types having the desired antigenic properties. The vaccine causes immunity against the forthcoming Hong Kong subtype influenza.

Abstract: A device for investigating surface phenomena by field emission contains an emission point in an evacuatable enclosure facing a fluorescent screen. The point is desorbed by a first pulse which produces sufficient heating of the point to attain substantially complete desorption and field emission or field desorption is produced by a second pulse spaced a controllable time after the desorption pulse. Repetitive measurements are possible by producing a train of the first and second pulses during which parameters can be varied and the results observed. Methods are disclosed for determining the temperature of the point from the measured field emission both by relating field emission to temperature and by relating temperature to desorption.

Abstract: A chamber for breeding and raising marine animals such as fish. The chamber is usable particularly in open water and is composed of a flexible film of plastic material which is inert with respect to a marine environment. The arrangement includes a pump for introducing water under a pressure greater than the surrounding environment into the chamber, and discharge openings through which the water discharges. A farm for raising marine animals can include at least one such chamber connected to a support spar, in the water, and extending vertically. Torus shaped water inflatable rims can be used to maintain the shape of a chamber.

Abstract: A control device comprising three mechanical elements, one of which is moe relatively to the two others and one of these elements being an electret, whereas the two others are control electrodes. The mechanical mobile element forms a portion partially cut out of a plate 3. Applications to electrical (particularly telephone exchanges and optical information display) switching.

Abstract: The invention relates to a probe for a device forming images from ultrasounds, in particular for the internal examination of the human body. The probe comprises transducers distributed in a curved array providing the possibility of a sectorial angular scanning and of generating ultrasonic beams converging towards a localized area where is arranged either a screen opaque to ultrasounds and formed with one or two openings in the vicinity of the center of converging area, with one or two lenses for ultrasounds in said opening or openings, either one or two electronic lenses formed with means for converting in parallel ultrasounds into electric signals, apparatus for differentially delaying the electric signals and apparatus for converting in parallel the electric signals, after a delay, into ultrasounds.

Abstract: Continuous centrifugal filtering device for precipitation, washing or draining. The rotative cylindrical sleeve is constituted of a helical winding with continuous coils of a long strip mounted in a rotative case including cylindrical rollers engaging the exterior of the cylndrical sleeve, and driven in rotation at slow speed, all in the same direction. The strip forming the cylindrical sleeve is looped in an endless assembly by a return coil which extends from one extremity to the other of the helical winding so that the porous cylindrical sleeve thus formed advances slowly axially renewing itself constantly. The device can be used for making coffee.

Abstract: The invention relates to a process for obtaining agents having mitogenic and/or adjuvant properties, from Nocardia cells.According to this process Nocardia whole cells are subjected to a rupturing treatment of their walls within an aqueous medium, particularly distilled water. After the separation of the non-ruptured cells and of the wall fragments of the ruptured cells, mitogenic agents are extracted from the remaining aqueous phase. The fractions obtained are useful as laboratory reagents and for the production of medicamentous compositions in which they are associated with a pharmaceutical vehicle.

Abstract: A percussion apparatus, for example for driving nails or staples, having an auxiliary piston which when released thrusts a main operating piston to an intermediate position. The auxiliary piston transfers a metered quantity of gaseous fuel together with combustion supporting air to a space between the main piston and cylinder head separating the auxiliary piston cylinder from the main piston cylinder. The explosive mixture in the space is then ignited and the main piston is thrust in a first direction displacing a driver member and simultaneously the auxiliary piston is thrust in the opposite direction to its initial position where it is retained until released to start another operating cycle; the main piston automatically returns to its initial position as the combustion gases are exhausted to the atmosphere.

Abstract: The invention relates to a regulated apparatus for the generation of electrical energy.A wind generator comprises a propeller having fixed blades and a generator connected by a transmission to the propeller and having sets of main and secondary brushes. The hub of the propeller comprises a rotor of an eddy-current brake whose inductor stator is supplied by a current delivered, starting from a certain speed, by the secondary brushes of the generator which are angularly shifted relative to their neutral position.

Abstract: The installation comprises at least one inclined thermal enclosure, forming all or part of the roofing of the dwelling, bounded by an inner roof element, essentially constituted by a collector material of very low thermal mass, absorbing radiation of the solar radiation type of wave length comprised between 0.25 and 4 microns. An outer covering element also of very low thermal mass, is essentially constituted by a material, preferably transparent to solar radiation and behaving as an opaque body to infra-red radiation of wave length comprised between 4 and 30 microns and so capable of emitting this radiation. This outer covering element has water and air sealing properties. This thermal enclosure is connected at its upper part to an upper duct forming a chimney directed upwards and provided with a closure member and, at its lower part, to a lower duct directed downwards and opening into the dwelling through at least one orifice.