Abstract: A method and device (100) for connecting the ends of two assemblages (1A, ) of threads (10A, 10B). The ends of the assemblages (1A, 1B) are subjected to an untwisting operation in order to separate the threads (10A1, 10B1) of these ends from each other; as many junction pairs (C) as there are threads (10A1, 10B1) are formed in each of the assemblages (1A, 1B); the filaments of the threads (10A1, 10B1) in the pairs (C) are untwisted, the untwisted parts are placed side by side in each pair (c) so as to obtain a junction region (15); the filaments of the two threads (10A1, 10B1) are assembled together by air splicing in each region (15); all the threads (10A, 10B) thus combined are assembled together by twisting. Joint assemblages thus obtained. Articles, for instance automobile tires, reinforced with these assemblages.

Abstract: An alkali salt composition free from hydroxides, melting at a temperature in the region of or greater than 180.degree., and usable in its molten state as a negative electrolyte for accumulators comprising an alkali metal negative electrode and an alkali alumina separator, contains an alkali metal amide, at least one alkali halide and an alkali hydride. It may also contain aluminium amide.

Abstract: An alkali salt composition free from hydroxides, melting at a temperature in the region of or greater than 180.degree., and usable in its molten state as a negative electrolyte for accumulators comprising an alkali metal negative electrode and an alkali alumina separator, contains an alkali metal amide, at least one alkali halide and an alkali hydride. It may also contain aluminium amide.

Abstract: A process for the transfer of hydrogen to or from an organic compound comprises introducing the organic compound into an electrolysis cell containing an aqueous electrolyte and at least one working electrode consisting of a metal hydride and a counterelectrode spaced from the working electrode. An electrolysis current is passed through the cell to remove hydrogen from the metal hydride or introduce hydrogen to the metal hydride in equilibrium with the reaction with the organic compound so that evolution of gaseous hydrogen is prevented. The metal hydride consists of a first component selected from the group of titanium, zirconium, lanthanum and palladium and at least one second component selected from the group which consists of iron, nickel, cobalt, copper, chromium, manganese, vanadium, niobium and silver.

Abstract: An electrolyzer comprising a cathode and an anode, disposed in an aqueous electrolyte bath, the electrodes each having at least one active surface directed substantially in facing relation to at least one active surface of the electrode of opposite polarity. At least one of the electrodes is permeable to gas and is the source of a gas release at the time of operation of the electrolyzer. At least one portion of the active surface of the electrode permeable to the gas is covered by a porous layer constituted by at least one refractory oxide which is electrically insulative and chemically inert with regard to the electrolyte and to the products formed at the time of electrolysis. The layer has a homogeneous distribution of pore sizes of a value sufficient for the electrolyte to traverse this layer and impregnate the electrode, the mean value of the radii of the pores of the insulating refractory oxide layer being at least as small as one-tenth of that of the pores of the electrode that it covers.

Abstract: Electrodes for primary and secondary batteries are produced by mixing a comminuted active compound with a comminuted metallic support material and then sintering the mixture under a pressure sufficient to allow the metallic particles to cohere in a temperature range of thermal stability of the active compound. The metallic support materials here specifically considered include nickel, silver, zinc and copper. The active materials include nickel fluoride, copper fluoride, silver sulfate and mercuric oxide in the case of positive electrodes as well as cadmium fluoride, zinc oxide, zinc sulfate and zinc phosphate in the case of negative electrodes.