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 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 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 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: 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.