Abstract: The invention relation to a device for identifying and checking ammunition on an automatic-loading device of a firearm. The firearm is capable of firing ammunition of different types. The device includes a rotating magazine having adjacent chambers for accommodating an ammunition round. The device further includes at least one fixed code reader arranged on a path of the magazine. The code reader includes optical detectors aligned in parallel with a center line of the ammunition round. Each ammunition round has a cylindrical coding zone on a cartridge thereof. The coding zones consist of annular coding tracks. The device utilizes the coding zones to identify and check the location of ammunition to expedite loading of the firearm. A method of utilizing the device is also provided.

Abstract: This device (27) for suspending the upper spacer (20) is carried by a longitudinal beam (40) for clamping the walls (25) of the mould (5), each wall (25) consisting of a support frame (30) and a graphite block (31); the spacer (20) and the other spacers are clamped between the blocks (31) by the beams (40) actuated by the jacks (45), the slabs being cast between the blocks (31) and the four spacers; the device (27) comprises levers (51) which are mounted, so as to rotate, on the beam (40) and which carry screw jacks (61) connected by a bar (67) and which support the upper spacer (20); the angular position of the levers (51), controlled by a dual-action jack, determines the transverse position of the spacer (20) and the screw jacks (61), each provided with a double pivot, provide the spacer (20) with free pendular suspension. This mounting facilitates handling and maintenance operations of the mould, (5), particularly the removal of the supports (30) of the blocks (31).

Abstract: The graphite wall of a mould for casting a metallurgical product includes a holder frame, a plurality of vertically disposed graphite blocks having vertical bores therein, upper and lower fixing members for fixing each of the graphite blocks in a vertical position on the frame holder. The graphite wall also includes cooling elements for introducing a cooling fluid into the bores. The lower fixing member of each graphite block forms a collector for the cooling fluid.

Abstract: The spacer comprises a body made from a single piece of metal of hollow form having a U-shaped transverse section. The concave part of this section faces towards the rear and the front face of the hollow body correspondiung to the base of the U forms the moulding wall of the spacer. A bent metal inner sleeve provides a free space of small thickness which has a U-shaped cross-section in which circulating water cools the moulding wall over its entire length. The space also comprises lateral parts in contact with the lateral walls of the hollow body.

Abstract: The frame of a mould comprises at least one rigid transverse structure element disposed in a zone which is substantially distant from the ends of the frame. The transverse element comprises two end parts between which are disposed support beams of the lateral moulding walls. Jacks each fixed on an end bearing part of the structure element are connected via their movable rod to the beam in zones which are distant from the longitudinal ends of the beam. The jacks make it possible to achieve both the displacement of the walls between their opening and closing positions and the clamping of the mould. Restriction of the clamping stresses is provided by the structure element. The bending moment of the beams remains low since the points of application of the stresses on the beams are distant from the ends of these beams and chosen as a function of the clamping conditions of the mould.

Abstract: The invention relates to a high-hardness steel for armouring having the following chemical composition by weight: 0.4 to 0.7% of carbon, 0.3 to 1.5% of manganese, 0.1 to 2% of chromium, 0.5 to 1.5% of silicon, 1 to 5% of nickel, 0.2 to 1% of molybdenum, less than 0.015% of phosphorus and less than 0.005% of sulphur, the remainder being iron and residual impurities resulting from the smelting of the materials necessary for the production.The invention also relates to a process for the production of such a steel.

Abstract: This device, comprising a main motor (1), a transmission mechanism with an epicylic gear train comprising an input member (3) driven by the main motor, an output member (5), and a reaction member (7) locked in rotation when the main motor is operating,is characterised in that it furthermore comprises an auxiliary motor (10), a speed-reduction mechanism (11) with at least one stage, comprising an input member (13) driven by the auxiliary motor, and an output member (19) adapted in order to drive in rotation the reaction member (7) of the epicylic gear train, means (21, 22) being provided in order to release the reaction member and in order to lock in rotation the input member of the epicyclic gear train when the main motor is at a standstill and when the auxiliary motor must operate.

Abstract: Device for controlling drive couplings of motor bogie axles of a locomotive. The axles are individually driven by motors (4, 5) controlled by a control assembly receiving signals from sensors (6) which are constituted for measuring the vertical load of at least one motor axle and are mounted on the primary suspension of the axle.

Abstract: The invention relates to a method and device for pulverizing a solid fuel material introduced inside a vessel by means of a screw conveyor through a die opening within the vessel and in which is formed by extrusion a roll of compressed material, the latter being disintegrated by at least one gas jet injected under high pressure. According to the invention the gas is injected from the inside of the conveyor and in the axis of each die, each gas jet having a sufficient momentum to form substantially a cone centered on the axis of the roll widening from the inside of the latter, each roll being constituted by a hollow tube whose inner wall crumbles and takes the shape of the jet liberating particles which are sucked into the jet and introduced into the vessel. The invention is particularly applicable to supplying a gasifying reactor.

Abstract: A device for feeding and loading a weapon with ammunitions in any direction and any elevation comprising at least one vertical rotatable magazine (20) disposed laterally of the breech (3) of the weapon (2) and formed by an endless cylinder comprising tubular receptacles (22) for the storage of the ammunitions (9), a carrier connected to the weapon (2) for taking up and transferring the ammunitions (9) between the rotatable magazine and the weapon, and a control system (7-8) controlling the position of the receptacles (22) of the cylinder in accordance with the angular position in elevation of the weapon and with the type of ammunitions. The invention is more particularly applicable to light armored cars.

Abstract: An energetic fluid product containing finely divided solid combustible matter suspended in at least one liquid phase and capable of being made to circulate in a line for supplying a treatment chamber, and a device for the preparation and a particular application of this product. The solid particles (13) are dispersed homogeneously within a stable foam produced by mixing a gas phase with the liquid phase to which stabilizing and emulsifying products have been added, and the liquid phase consists solely of fine film (12) connecting the solid particles (13) together and confining gas bubbles (11) which occupy the spaces between the solid particles (13). The invention applies in particular to the supply of combustible matter to a combustion chamber or to a reactor for coal gasification.

Abstract: A bogie with swiveling axles for pivotable mounting under the body of a rail vehicle of the metro or tram type having a bogie chassis (1) carried by two axles (2) provided with axle boxes (3) and capable of being swiveled by an articulated system moved by the rotation of the body, the chassis (1) being supported on each axle box via two resilient support elements (4, 8) at least partly constituted of elastomer and mounted above and below the box, a second articulated system (5) connecting two axle bones in such manner as to cause them to pivot about vertical axes of symmetry of the axles.

Abstract: Quick-action coupling for the elements of an extension tube used in ocean oil well drilling, comprising a female tubular element (3) and a male tubular element (4) of the rising column. When fitted into another, these form between them an annular groove (10) open in its upper part and limited in its lower part by an axial bearing surface made on the periphery of one of the tubular elements (3, 4), this having a dimension sufficient to allow the locking collar (13) to be introduced.

Abstract: A degasifier intended for equipping an electrolysis plant, particularly a pressurized water electrolysis plant intended for the industrial production of hydrogen and oxygen.The degasifier comprises a vertical tubular container (1) holding a stack (13) of annular plates (14) simply placed one on the other and bounding degasification compartments (23). The liquid to be degasified is fed through a pipe (8) situated in the top part of the container, and the degasified liquid passes out through an aperture (9) situated in the bottom part of said container.

Abstract: An hydraulic energy dissipater with multiple working ratios, of the telescopic type, comprising a member with a variable cross-section, penetrating into a bore provided on the bottom of a piston and into a chamber provided inside the rod of the piston, which controls, as a function of its position with respect to the bore, the passage of fluid between two working chambers, either through weakly loaded valves or through more strongly loaded valves. The invention is applied more especially to the damping of yaw movements of bogies of railway rolling stock.

Abstract: A holding device for a tube bundle, constituted by undulated metal strips, each row of tubes receiving at least one set of two metal strips extending transversely to the tubes, on each side of the row of tubes. The metal strips are incurved in the direction of the tubes at the level of each tube and are incurved in the other direction at the level of each gap separating the tubes, the strips situated on each side of the same tubes thus being brought towards each other. Between the tubes, slightly spaced clamping elements are provided for exerting a force clamping the strips towards one another, at the level of the zone situated between the tubes, so as to apply the strips on each side of the tubes with a pre-determined force, at the level of the incurved zones in the direction of the tubes. The invention is particularly applicable to steam generators.

Abstract: A swash plate mechanism, especially for high power swash plate pumps, incorporating, inside a casing (2) bounded by two end walls (21, 22), a driving component (3) mounted so as to rotate about a longitudinal axis (30), an inclined plate (5) bearing upon the driving component (3) and mounted so as to swivel on the latter about an inclined axis (50). The two end walls (21, 22) of the casing are joined at their periphery by additional lateral tie rods (80) parallel to the central tie rod (8), bearing upon the two end walls (21, 22) of the casing (2) and subjected to a preload tension in order to carry the forces developed by the pistons (6) in co-operation with the central tie rod.

Abstract: Support structure for a solar collector consisting of two sets of bars linked by assembly nodes, a concave triangulated lattice (1) around the central node (10) positioned on the sighting axis (xx'), and a stiffening lattice (2) separated from the concave lattice (1) by struts (3, 6), the bars of the two lattices, positioned in a number of planes (P, Q, R) passing through the axis, constituting rigid half-trusses extending radially from a common central strut consisting of a column (3) positioned on the sighting axis (xx') and carrying at its ends the central nodes (10, 20) of the two sets of bars.

Abstract: Process and apparatus for supplying combustible material to a fluidized bed in a vessel connected to a separating device for the solid particles entrained with the smoke and containing a certain proportion of unburnt matter, the particles recovered being recycled into the fluidized bed. During a normal operation of the fluidized bed supplied with combustible matter, the solid particles recovered in the separating device are accumulated in a silo and periodically, the supply of combustible matter is stopped and the particles accumulated in the silo are recycled into the fluidized bed with a regulated flow rate, so that the combustion of the unburnt matter contained in the recycled particles maintains the temperature of the fluidized bed at the desired level. The exothermic reaction is maintained alternately by the combustion of the combustible matter in the normal operating phase and by the combustion of the unburnt matter in the recycling phase.

Abstract: Method and a device for controlling the temperature of a reaction carried out within a vessel in a fluidized bed containing solid particles which can be entrained with the smoke and then recovered in a separating device and recycled into the fluidized bed after passage through a heat exchanger where they yield up their heat. The flow of particles separated from the smoke is divided into two parts, a hot part recycled directly into the fluidized bed and a cool part constituted by particles taken up at the outlet of the separating device and passed into the heat exchanger to constitute a reserve of cold material which can be mixed with the hot part before reinjection into the fluidized bed, the relative flow rates of the hot particles and of the cold particles being regulated so as to control the flow-rate and the average temperature of the flow of particles recycled into the fluidized bed for maintaining at the desired level the reaction temperature in the midst of the latter.