Abstract: A method of butt welding two adjoining plates is disclosed. The method includes welding the two plates together in a single pass, cutting a gap in the center of the first weld leaving first weld material on the two adjoining surfaces, and then rewelding the gap between the two adjoining surfaces of first weld material ensuring the reweld only occurs on the first weld material. This method has the advantage of heat treating the heat affected zone (HAZ) of the parent material adjacent the weld to prevent adverse metallurgical effect on the metal.

Abstract: In the machine disclosed, two flexible welding cables carry capacitor discharge current from a capacitor bank in a capacitor charging welding set and produce a movable electrical connection between a welding gun and a base material onto which a welding element is to be welded. Both welding cables are fixed with respect to one another. According to one embodiment of the invention the cables are arranged to be equidistant from one another substantially over their entire length. They are arranged as close as possible to each other within the breakdown limits of the insulation. The cables are of a predetermined length.

Abstract: A scanning device for use in conjunction with TIG spot welding lugs on a commutator to taps on the winding of a rotor includes a scanning arm pivotally mounted on a support which can be actuated between a raised position wherein the lower end of a scanning finger depending from the lower end of the scanning arm is disposed outside a circle circumscribed by the ends of the commutator lugs and a lowered position wherein the scanning finger projects into the gaps existing between adjacent lugs. A welding order is released in response to deflection of the scanning arm brought about by contact between the scanning finger and a lug upon rotation of the rotor as well as an order to actuate the support to its raised position for a predetermined period, the support then being returned to its lowered position for scanning the next adjacent lug.

Abstract: Both fully automated and semi-automated methods and apparatus are described for producing armored rod saws by progressively coating a rod or wire substrate with a slurry of a flux paste adhesive and brazing metal powders, overcoating the latter with abrasive particles, followed by fusion of the brazing metal coating thence cooling same to solidify the brazing metal into a thin layer bonded to said substrate and partially embedding said abrasive particles therein with said particles projecting therefrom to provide a myriad of sharp cutting edges.

Abstract: Ductile junction of metal-sheathed composite wire, such as flux-cored welding wire for use in automatic arc welding machines, is provided by process comprising resistance upset welding.

Abstract: A shaped, sacrificial anode for water tanks and a method of constructing the same from extruded sections is disclosed, particularly an anode having a greater mass adjacent to regions of the tank where improved corrosion protection is needed.

Abstract: An electrode, particularly for use in tungsten inert gas welding, and a method for the production thereof wherein the electrode consists of a thoriated tungsten electrode rod having a bore in the working end thereof with an internal surface roughness formed by electro-errosion, the bore being filled with a mass of an electron emission increasing metal-nonmetal compound which is fuse-sintered in place to form a centrally disposed plug in the working end of the electrode.

Abstract: An electric welding torch adapted to hold an electrode comprises a helically fluted tube made of flexible material and adapted to surround a portion of the electrode inserted in the tube. Means is provided for mounting the tube in the torch and permitting relative rotation of displaced portions of the tube along the electrode for selectively holding the electrode in the tube by physical engagement of helical land portions of the tube against the surface of the electrode and for releasing the electrode by twisting of the tube in a direction opposite that of the spiral flutes or by application of axial compression of the tube.

Abstract: A method and apparatus for forming piston rings are disclosed. A split piston ring made by conventional processes is locally heated along its inside surface for a short distance either side of the split. This causes a short length of the ring on either side of the split to curl into a slight inward protrosion due to internal yielding of the restrained heated area and subsequent tensioning during cooling. The inwardly curved configuration prevents catching of the ring's ends on gas ports of ported cylinder engines.

Abstract: Apparatus for inductive hardening of the bearings of crankshafts by a rotational process, wherein various parts of the surface of the workpieces are heated by variably shaped inductors, and wherein the workpiece is loaded horizontally with a hardening carriage, which supports a transformer plate for supporting a transformer connected to a medium frequency current source and an inductor attached to the transformer plate, and an automatic control to move the transformer plate to load and unload separate inductors for treating variably shaped workpiece surfaces.

Abstract: The invention relates to a device for effecting the guiding and oscillation movements of a machine part, especially a welding head of the type mounted for oscillating motion either by a movement of translation or by a pendular movement in a certain direction under the action of an impulse-control system, the movements of the said machine part being limited by direct mechanical contact of said part at pre-determined points, the duration of each period of travel of the part being equal to a selectively-determined fraction of the interval between two successive impulses from the said control system, the remaining fraction constituting a stopping time between two periods of travel of said machine part.The machine part is actuated by a driving fluid and distributor system and further comprises means for regulating the speed of the said part in its outward and return travel periods by acting on the flow-rate of the driving fluid.The principal application is concerned with the welding together of metal plates.

Abstract: A welding method and machine for fabricating a wire network by supporting a group of wires in spaced side by side relation, intermittently advancing the wire group endwise through a welding station, and following each advance of the wire group, supporting at least one wire within the welding station in a transverse welding position relative to the group wires, such that the group and transverse wires cross one another, and welding the group and transverse wires to one another at their crossing points to form a welded wire network comprising the group wires and a multiplicity of transverse wires spaced along and welded to the group wires. The invention is described in connection with fabricating gore shaped wire networks which may be assembled to form a parabolic antenna reflector.

Abstract: One side of a source of electrical energy is connected to a dented metal sheet and a hammer electrode connected to the other side of the source is successively brought into instantaneous contact with a multiplicity of locations spaced apart over the dent. The sheet is electrically heated at the location so that stresses in the sheet are relieved, thereby relaxing the sheet and flattening the dent. The electrode is generally L-shaped and has a pointed copper tip surrounded by a safety sleeve with only the point of the tip projecting from the sleeve.

Abstract: The invention relates to an apparatus for automatic fillet welding. The apparatus has a runnable motor-driven carriage which carries a multi-stage telescopic unit which mounts a lateral slide unit mounting in turn a longitudinal slide. A welding head having three welding torches mounted on tip end of the longitudinal slide through a complex type fine adjusting mechanism assembly. The telescopic unit is controlled by a hydraulic pump circuit which is controlled in turn by means of an automatic electric circuit.BACKGROUND OF THE INVENTIONThis invention relates to a novel apparatus for carrying out automatic vertical, high speed fillet welding.Previously, the automatic vertical fillet welding was generally carried out in an upwardly advancing method without use of any protecting gas. In rare cases, however, the automatic vertical fillet welding was proposed, at least theoretically, relying upon the downwardly advancing method using carbon dioxide gas as a protecting or atmospheric gas.

Abstract: An alpha emitting isotope is positioned near the tip of a TIG welding electrode so that the alpha radiation can provide an ionized path between the electrode and the workpiece.

Abstract: A machine and method terminating armature windings to commutators having means for testing the integrity of the connection and winding between two commutator segments immediately after each termination is bonded and recycling the bonding sequence at the same or different bonding energy if certain faults are detected. If the tests indicate certain faults or retests are negative, the armature is ejected without making further termination.

Abstract: A cored type arc-welding steel electrode for the welding of 14 gauge to 3/8 inch thick mild steel wherein the ingredients in the core provide a smooth spray arc that is easy to control along with excellent bead appearance, low spatter, and good slag removal. The core ingredients include: calcium oxide, as a necessary compound, in a prefused mix to lower its hygroscopicity; aluminum and magnesium in controlled amounts; and selected fluorides.

Abstract: A conductive hermetic sealing cover for a container is fabricated by disposing the cover with a superimposed preformed heat-fusible conductive ring having outer dimensions similar to those of the cover in a shallow cavity of a nonconductive supporting member, the cavity having dimensions only slightly larger than those of the cover to secure registration between the ring and the periphery of the cover. A plurality of pairs of spaced electrodes are resiliently engaged with the ring with substantially equal contact pressures and a separate pulse of current is passed between the electrodes of each pair and through the ring and the cover, thereby producing an effective spot weld between the ring and the cover adjacent each of the electrodes. The term "ring" is used herein and in the appended claims in its generic sense to include a closed loop of conductive material of any configuration corresponding to the periphery of the cover, usually round or rectangular.

Abstract: A method of manufacturing a friction disc for use, inter alia, in a disc brake, the friction disc including a metal backing plate and a plurality of friction pads carried by the backing plate. The method comprises the steps of providing a plurality of powder compacts of friction material at the required positions on the backing plate, and resistance heating the powder compacts to sinter the compacts into the required friction pads and to bond the pads to the backing plate.

Abstract: The nozzle of an inert gas arc-welding gun is flexibly extended by coupling an elongate, tubular electrode between the body of the gun and its nozzle. The electrode is formed of spirally-wound conductive wire capable of being bent into any desired configuration needed for the particular job and of retaining its set disposition. A sleeve binds the wound wire electrode to maintain its circularity during bending and insulation is provided around the sleeve. Welding current is carried by the wire and the welding metal in wire form is passed through the bore of the wound wire. A steel spring coaxial with the electrode guides the welding wire. Inert gas is supplied through a passage provided between the insulation and the sleeve.