Abstract: The invention relates to a wire-guide/nozzle assembly (11, 13) for an electric arc welding torch, comprising at least one nozzle (11) for delivering gas and at least one wire-guide system (13) for guiding at least one consumable wire, characterized in that the downstream end (20) of the wire-guide system (13) runs into the nozzle (11). The peripheral wall of the nozzle (11) has at least one cut-out (10) through which the wire-guide system (13) passes. The wire-guide system (13) is fastened to the nozzle (11). The TIG welding torch comprises a wire-guide/nozzle assembly (11, 13).

Abstract: The invention relates to a wire-guide/nozzle assembly (11, 13) for an electric arc welding torch, comprising at least one nozzle (11) for delivering gas and at least one wire-guide system (13) for guiding at least one consumable wire, characterized in that the downstream end (20) of the wire-guide system (13) runs into the nozzle (11). The peripheral wall of the nozzle (11) has at least one cut-out (10) through which the wire-guide system (13) passes. The wire-guide system (13) is fastened to the nozzle (11). The TIG welding torch comprises a wire-guide/nozzle assembly (11, 13).

Abstract: The invention relates to a wire-guide/nozzle assembly (11, 13) for an electric arc welding torch, comprising at least one nozzle (11) for delivering gas and at least one wire-guide system (13) for guiding at least one consumable wire, characterized in that the downstream end (20) of the wire-guide system (13) runs into the nozzle (11). The peripheral wall of the nozzle (11) has at least one cut-out (10) through which the wire-guide system (13) passes. The wire-guide system (13) is fastened to the nozzle (11). The TIG welding torch comprises a wire-guide/nozzle assembly (11, 13).

Abstract: The invention relates to a wire-guide/nozzle assembly (11, 13) for an electric arc welding torch, comprising at least one nozzle (11) for delivering gas and at least one wire-guide system (13) for guiding at least one consumable wire, characterized in that the downstream end (20) of the wire-guide system (13) runs into the nozzle (11). The peripheral wall of the nozzle (11) has at least one cut-out (10) through which the wire-guide system (13) passes. The wire-guide system (13) is fastened to the nozzle (11). The TIG welding torch comprises a wire-guide/nozzle assembly (11, 13).

Abstract: A method for the TIG braze-welding of one or more steel workpieces employing a TIG welding torch, a consumable wire and a shielding gas, characterized in that the shielding gas is a ternary gas mixture formed from helium, hydrogen and argon, containing less than 5% helium by volume; less than 1% hydrogen by volume; and argon for the balance. Application of the method to the welding of galvanized carbon steel sheet for automobiles.

Abstract: The invention relates to a wire-guide/nozzle assembly (11, 13) for an electric arc welding torch, comprising at least one nozzle (11) for delivering gas and at least one wire-guide system (13) for guiding at least one consumable wire, characterized in that the downstream end (20) of the wire-guide system (13) runs into the nozzle (11). The peripheral wall of the nozzle (11) has at least one cut-out (10) through which the wire-guide system (13) passes. The wire-guide system (13) is fastened to the nozzle (11). The TIG welding torch comprises a wire-guide/nozzle assembly (11, 13).

Abstract: A wire-guide/nozzle assembly for an electric arc welding torch, with at least one nozzle for delivering gas and at least one wire-guide system for guiding at least one consumable wire, distinguished in that the downstream end of the wire-guide system runs into the nozzle. The peripheral wall of the nozzle has at least one cut-out through which the wire-guide system passes. The wire-guide system is fastened to the nozzle. A TIG welding torch utilizing such a wire-guide/nozzle assembly.

Abstract: The invention relates to a wire-guide/nozzle assembly (11, 13) for an electric arc welding torch, comprising at least one nozzle (11) for delivering gas and at least one wire-guide system (13) for guiding at least one consumable wire, characterized in that the downstream end (20) of the wire-guide system (13) runs into the nozzle (11). The peripheral wall of the nozzle (11) has at least one cut-out (10) through which the wire-guide system (13) passes. The wire-guide system (13) is fastened to the nozzle (11). The TIG welding torch comprises a wire-guide/nozzle assembly (11, 13).

Abstract: Process and unit for the arc working, particularly plasma cutting, of a workpiece, in which a plasma torch is supplied with an electric current and with a gas mixture containing hydrogen and nitrogen and/or argon, and a plasma jet obtained by the ionization of the gas mixture by the electric current is delivered by means of the plasma torch. The hydrogen concentration in the gas mixture containing hydrogen and nitrogen and/or argon is less than 50%. The gas mixture is obtained by adding a defined amount of hydrogen to nitrogen and/or argon, immediately before the gas mixture is introduced into said torch. The defined amount of hydrogen is defined according to the thickness of the workpiece, to the grade of the constituent material of the workpiece, to the desired work rate and/or to the intensity of the electric current.

Abstract: Process and unit for the arc working, particularly plasma cutting, of a workpiece, in which a plasma torch is supplied with an electric current and with a gas mixture containing hydrogen and nitrogen and/or argon, and a plasma jet obtained by the ionization of the gas mixture by the electric current is delivered by means of the plasma torch. The hydrogen concentration in the gas mixture containing hydrogen and nitrogen and/or argon is less than 50%. The gas mixture is obtained by adding a defined amount of hydrogen to nitrogen and/or argon, immediately before the gas mixture is introduced into said torch. The defined amount of hydrogen is defined according to the thickness of the workpiece, to the grade of the constituent material of the workpiece, to the desired work rate and/or to the intensity of the electric current.

Abstract: The invention relates, on the one hand, to an electric-arc work process, such as a plasma cutting or TIG welding process, in which a torch is supplied with at least one non-oxidizing gas, the said torch being provided with at least one electrode made of pure or alloyed metal, such as a tungsten electrode, characterized in that the said non-oxidizing gas contains a concentration of impurities of the oxygen type [O.sub.2 ] of less than 80 ppmv and a concentration of impurities of the water vapor type [H.sub.2 O] of less than 400 ppmv and, on the other hand, to such a welding gas.

Abstract: A plasma cutting torch has a torch body comprising an electrode and a nozzle, and structure for mounting and connecting the torch body. It further comprises a torch support (A) defining a first series of fluid passages (7, 8, 10, 4, 47, 50, 54) connectable to respective circuits of fluids and a first bearing surface (9); a unitary assembly of torch body (B) comprising the electrode (28, 280) and the nozzle (36) and comprising a second series of fluid passages (25, 27, 38, 39, 42, 48, 49, 55, 56) and a second bearing surface (21); and a quick coupling (D) to assemble the assembly of the torch body to the support for the torch body with the first and second bearing surfaces bearing axially against each other and with the passages of the first series communicating with the respective passages of the second series.

Abstract: Gun for cutting out sheet metal, of the type comprising an electrode (26) within a nozzle (19) with an outlet conduit (23) for a plasmagenic gas, mounted for free axial displacement relative to an electrode carrier (14), characterized by a drive shaft (7) for the rotation of the electrode carrier (14) and of the nozzle (19) about an external axial bearing pivot (22) of the nozzle and an outlet conduit (23) for plasmagenic gas which is eccentric relative to said axial pivot (22).This gun permits carrying out small cutouts of sheet metal by rotation of a plasma arc issuing from the conduit (25) rotating about the pivot (22).Application particularly to unbuttoning spot welded sheets.

Abstract: The device comprises a parallelpipedal junction block (10A) with opening onto one of its surfaces a respective channel (11A) each housing one of a plurality of opto-electronic components (9). The junction block further comprises a single groove (12A) opening onto the opposite surface and a support member (13A) and a sealing member (14A) superposed one on the other in the groove. The support members and the sealing members each have a channel aligned with each channel of the junction block, to accommodate respective optical fibers (4) to connect to the opto-electronic components. Each fiber which is fitted with a terminal (5) with a collar (5') intermediate its ends. A metal sleeve (17A) with resilient longitudinal tongues (18A) is fitted in each channel of the support member to lock the fiber in position by snap-action engagement of the tongues under the collar.

Abstract: A versatile electric connector with an automatic stripper and additional gripping means. The electric connector (1) has at least one automatic stripper (2) associated with a gripping means (5) with paired lyre-shaped parts (5L, 5L') the bases of the two lyre-shaped parts of a pair (5LA, 5L'A) being parallel and face to face so as to allow a extra connection to be set up in any one of three perpendicular directions at the lyre-shaped parts.

Abstract: The device having a hermaphroditic assembly of two identical components (10, 10') for attaching the end (11) of a multiple conductor cable perpendicularly to an equipment (13) such as a junction block, connector, etc . . . Each component (10) has an arrangement (A) adapted for fixing it to the equipment and a cable clamping arrangement (B) coupled to the fixing arrangement by a semi-rigid link (C). The cable clamping arrangement comprises a bar (15) having at one end a notched tongue (20) and at the other end a locking aperture (18). After fitting the components (10) to the equipment, they are clamped together by means of a pincer movement (P) and the cable is then firmly attached to the equipment.

Abstract: The switch includes an electromagnet (9) with a moving core (10) which is retracted when voltage is applied. A configuration of three levers (11, 12, 13) which are fixed together in pairs when the switch is cocked. The first lever (11) is integral with the rotary control shaft (3). The second lever (12) pivots on a stationary middle shaft (23) due to the respective actions of the core being released and of an antagonistic spring (15). The third lever (13) pivots on the end shaft (28), is provided with a return spring (16) and holds the control shaft (3) and the first lever (11) in position by being fixed to the other two levers. The third lever which has a middle lock projection (29) for the first lever also has a transversal passage (24) with a notch (27) in which the free end (25) of the second lever (12) can move, said free end itself having a hooked portion (26) which co-operates with the notch (27) in the tripped position and allowing manual or automatic return to the rest position.

Abstract: A terminal block equipped with connection parts which avoid the necessity of stripping the connecting wires. The terminal block (1) has a groove (13) inside which is accommodated firstly at least one connection part (3) whose lips (30, 30') form an automatic stripping and blocking slot in the axis of the groove and secondly a pusher (2) which can be manipulated from the outside and can move in translation in the groove (13) between a partial interpenetration position with the part (3) and a position allowing the insertion of suitable wire (4) between said pushing piece and the part (3). The invention relates to electric connection and more particularly to the connection of energy distribution wires.

Abstract: Means for fixing a device on supporting a channel bar comprise a leg (5), a fixing component (2) and a compression spring (3). The fixing component has a rod (12) and a body (11) which slide in a longitudinal guide (24) in the base (1) of a housing for said device to be fixed on the bar. Two recesses (9, 10) are provided in the base. The compression spring is installed in a partially compressed condition in the first recess (9) and the rod (12) passes through it, said rod forming shoulders (19) with the body. The end of the rod (12) is fitted with a pin (4). The fixing component has two hooks (13, 14) and a guide (15) which co-operates with a groove (27) of the base to make the fixing component captive.

Abstract: A terminal comprises a slotted bolt (7), and a cap (10) therefor. The cap has one end closed by a plate (14) with two lugs (11,12) projecting perpendicularly from the periphery of the plate (14) and a central boss (13) with two plane faces (18) opposite the gaps between the lugs. The plane faces have hooks (58) reaching part of the way up them, and the end of the boss beyond the hooks is polygonal.The tool includes a torque limiter (25), a casing (28), and a drive member (29) passing through the casing and made fast to the torque limiter. The casing has two lugs (44,45) and a lock (30) with hooks (39,39') that engage the hooks on the cap. The lugs on the casing fit in between the lugs on the cap, and the drive member has a sleeve (31) at its cap-engaging end with a socket (32) shaped to receive the central boss (13).