Abstract: A method for making a glass-or ceramic-to-metal seal, and the seal itself. A layer of gold is deposited onto the metal. A thin layer of indium is placed over the gold, and the structure is heated above the melting point of indium to create a gold-indium alloy at the gold-indium interface. After cooling, the indium surface of the structure and the glass surface are super-cleaned. The super-cleaned surface are then pressed together to form an air-tight seal.

Abstract: A method of forming an exhaust gas conduit tube wherein a plurality of captured take-up slots in the tubular wall define a deformable region near a free end of the tube, which region will cooperate with clamping means encircling the region to clamp the tube to a second tube inserted telescopically therein. The captured nature of the slots enhances the structural integrity of the tube end. The method includes forming the apertures along an edge of flat steel stock, rolling the steel stock into a tube wherein the apertures are adjacent a free end and welding the longitudinal seam. The free end portion is further flared for strength and to facilitate entry of a second tube.

Abstract: A method of forming fixing heads on both ends of tension springs which are made from coiled spring wire, in particular for precision apparatus. A continuous coil of spring wire is expanded over at least two turns at the area of the ends to be formed. The expanded turns are provided with an envelope of a synthetic material by molding.

Abstract: A method for the assembly of large diameter rolling bearings comprising two support rings concentrically arranged one in the other, the said rings being provided with circumferential grooves, two raceways wires form-lockingly arranged in seats in the grooves under preload and rolling bodies rolling therein, at least one support ring being provided with a circular cavity in the circumferential groove which cavity is dimensioned to receive a raceway wire without preload.

Abstract: A steel floor construction for freight hauling vehicles includes a plurality of elongated floor planking members arranged in side-by-side relation to provide a load bearing floor with a nailing groove between adjacent planking members. Each plank includes a downwardly open channel member having a relatively wide central web supported along its edges by integrally formed downwardly extending flanges, with the web being reinforced along its length by an upwardly directed generally U-shaped member welded to its bottom surface and having a pattern of anti-skid projections die-formed on and project upwardly from its top surface. The channels are progressively roll formed from a continuous length of strip steel by passing the strip through a series of forming roll pairs.

Abstract: A light-gauge metal container has a closure flange fixed to a container wall, to which a closure plug is detachably screwed. An inwardly projecting cylindrical neck is fastened to the edge of a closure flange receiving opening made in the container wall. The closure flange is inserted in the opening so that the inward ends of the flange and neck flushed with each other, with an annular face formed by the flushed flange and neck ends circularly edge-welded. In manufacturing the container, the closure flange is press-fitted in the receiving opening, with the annular face held in the horizontal position. The assembly is transferred to welding apparatus, and positioned roughly first, then exactly by mating the flange opening with a vertical reference shaft on the welding apparatus. The annular face is edge-welded by rotating a welding torch about the axis of the reference shaft.

Abstract: A groove is provided on the side of a metallic structure opposite to the side thereof which is exposed to a corrosive atmosphere, and the groove is subjected to build-up welding while cooling with a liquid coolant, whereby any stress corrosion cracking which otherwise occurs on the side of the structure to be exposed to the corrosive atmosphere can be prevented. Especially, this method of manufacture is appropriate for the repair welding of a butt-welded pipe of austenite type stainless steel, and it is effective to perfectly prevent the stress corrosion cracking of the pipe prone to be caused by reactor water during use in a nuclear reactor.

Abstract: In making diode bridges 16, it is desirable to solder a plurality of such bridges simultaneously. To accomplish this a plurality of diodes 10 are held by a portion of one lead each in a cantilevered fashion in each of four in-line racks 38, 40, 50 and 52. The four racks 38, 40 50 and 52, with diodes 10 extending therefrom, are held at a fixed angle and fixed spacing with respect to each other to interleave the diode leads 14 and form channels. Solder wire 62 is placed in each of the channels. The diodes 10 and the solder wires 62 are then placed into either a heated gas or heated saturated vapor to melt the solder at the crosspoints 60 of the leads 14. Troughs 64 are provided adjacent the crosspoints 60 to catch any solder runoff which occurs during the melting.

Abstract: A method of and apparatus for fabricating a solar collector panel including providing a thermal conductive, heat absorbing plate having a plurality of grooves therein, feeding discrete lengths of solder strips having transverse curvatures into said grooves, respectively, placing a tube assembly having a plurality of conduits into said grooves of said plate in superimposed relation on said solder strips, holding said loose assembly together, and heating the loose assembly to melt the solder and effect a thermal conductive bond between said tube assembly and said plate.

Abstract: A method of producing a nonconsumable electrode comprising forming a blind hole in the working end face of a high-melting core of the electrode, partially filling the blind hole with doping agents and then filling the remaining portion of the hole with a mixture of the doping agents and high-melting core material. The mixture is then heated from the surface of the electrode until a fused surface layer is formed and an enclosed space with doping agents is provided in the electrode.

Abstract: A method of and apparatus for applying beads of solder to a metallic plate as an integral part thereof for subsequent attachment to another component in an assembly operation.

Abstract: A method for assembling a large massive steel shell is disclosed for housing a nuclear reactor while having sufficient strength to contain an explosion of such nuclear reactor. The shell is formed of large heavy gauge metal plates which are welded to each other to form a large sphere. Locating and supporting rings are mounted concentrically on a base. The rings increase in height from the center of the sphere to support and locate correspondingly higher annular segments of the sphere. The rings are erected and positioned with precisely adjustable tie rods so that the annular upper edge of the rings have a correspondingly accurately known position with respect to the annular sphere segments to be supported by the rings. The large heavy plate segments are then mounted on the rings and welded together to form a lower spherical portion whose spherical shape closely conforms to that desired for the sphere.

Abstract: The solder extractor includes a hollow handle rear section housing a suction connected receiver and a front section carrying an electrically heated tubular tip and a coaxial communicating rearwardly projecting coupling tube. One of a pair of end-to-end hinged posts projects forwardly and eccentrically from the rear section and the front section is coupled to the other post by an elongated bolt slidably engaging axial bores in the posts and screw engaging the rear section. In operative position the post are coaxially locked and the rear section secured to the posts with the coupling tube connected to the receiver by the tightened bolt and to position the sections for cleaning the bolt is retracted to allow retraction of the front section and coupling tube and to relatively unlock the posts to permit the swinging of the rear section affording access to the bore therethrough for cleaning.

Abstract: Automatic apparatus for the treatment of the links of metallic chains which comprises, in operative sequence: means for the automatic application of soldering powder to the chains being treated; means for the automatic removal of the excess of soldering powder applied to said chains; and means for the automatic application of a powder which isolates each chain link from the next during the soldering operation. The application and removal means also have the function of movable guide means for the chains being treated.

Abstract: Substrates made of a metal or an alloy are bonded by coating a brazing flux incorporating a metallic powder or a metal compound powder on the surface of the substrate having a melting point of higher than 700.degree. C.; and heating them at a temperature higher than a melting point of the flux but lower than a melting point of the metal of the metallic powder or the metal compound powder whereby a molten crystallization and a mutual diffusion are caused between the substrates and the metal activated by the molten flux.

Abstract: A method of bonding a diamond or cubic boron nitride abrasive compact to a second such compact in which a braze alloy layer is deposited on a layer of a transition metal on the first compact, the second compact being then placed on the braze layer and the whole assembly being heated to effect bonding between the first and second compacts.

Abstract: A method of forming a vehicle axle assembly including the steps of coaxially welding a spider having a through opening to a tubular spacer to define a subassembly having a through bore, removing material formed by the welding operation from within the bore, installing the subassembly on an axle beam, and concurrently welding an end of the axle beam and spacer to a spindle.

Abstract: This invention is directed to an apparatus and method for treating a flowing gas so as to decrease the back pressure of the flowing gas and the noise of the flowing gas.

Abstract: A method for fabricating superplastically formed/diffusion bonded structures wherein metal blanks of a titanium alloy are joined at selected areas by diffusion bonding and expanded superplastically to form a desired sandwich or integrally stiffened structure. In such method, the metal blanks are treated in selected areas with a "stopoff" material to prevent bonding at those areas during diffusion bonding and to permit forming or shaping at the same areas during superplastic forming. An improved stopoff compound is provided for this purpose, in the form of yttria of relatively coarse particle size, coarser than 5 microns, in a suitable volatilizable vehicle. Such stopoff compound is inert to reactive metals such as titanium at the high diffusion bonding temperatures, and permits relatively low breakthrough pressure-time product during superplastic forming, thereby preventing excessive strain or rupture of the metal through non-superplastic deformation.

Abstract: .[.Article.]. .Iadd.An article .Iaddend.to be soldered, fused or brazed is placed in hot saturated vapors generated by continuously boiling .Iadd.a .Iaddend.heat transfer liquid having selected properties including .Iadd.a .Iaddend.boiling point at least equal to, and preferably above, .Iadd.the .Iaddend.temperature required for .Iadd.such .Iaddend.operation. Vapors condense on .Iadd.the .Iaddend.article and give up latent heat of vaporization to heat .Iadd.the .Iaddend.article to .Iadd.the .Iaddend.temperature for soldering, fusing or brazing. .[.Heat.]. .Iadd.The heat .Iaddend.transfer liquid may be a fluorocarbon. Apparatus is shown for soldering, fusing or brazing a single article, a batch of articles, or a continuously moving line of articles. Specifically, mass reflow soldering and mass wave soldering operations are described. .Iadd.