Abstract: This invention relates to an improved connector assembly for an electrically heated injection molding sprue bushing and a method of making the same. The sprue bushing has a helical portion of the heating element extending around a central core portion which conveys pressurized melt from a molding machine to a cavity in the mold. It is formed by filling the space between the stainless steel core portion and a stainless steel outer sleeve by a highly conductive copper alloy. The heating element has a lead portion which extends out through an aperture. The aperture provides a seat which receives two split washers with central openings therethrough for the lead portion. The washers are each formed of two half washers which are oriented so that the divisions therebetween are not aligned. A connector sleeve is inserted over the projecting lead portion with a flared end which is received in the aperture against the washers. The washers and connector sleeve are brazed in position in a vacuum furnace.

Abstract: A method for assembling a handle to a cooking vessel, such as a pot or pan, wherein the use of conventional rivets having heads protruding from the inner surface of the cooking vessel is avoided. Studs are welded to the outer surface of the receptacle portion of the cooking vessel, and in the preferred embodiment, the openings in the handle are dimensioned much larger than the diameters of the studs so that the openings can clear the diverging studs. Step washers are then utilized to space the handle and studs so that a tight assembly results when the ends of the studs are expanded against the washers.

Abstract: This invention relates to an improved connector assembly for an electrically heated injection molding sprue bushing and a method of making the same. The sprue bushing has a helical portion of the heating element extending around a central core portion which conveys pressurized melt from a molding machine to a cavity in the mold. It is formed by filling the space between the stainless steel core portion and a stainless steel outer sleeve by a highly conductive copper alloy. The heating element has a lead portion which extends out through an aperture. The aperture provides a seat which receives two split washers with central openings therethrough for the lead portion. The washers are each formed of two half washers which are oriented so that the divisions therebetween are not aligned. A connector sleeve is inserted over the projecting lead portion with a flared end which is received in the aperture against the washers. The washers and connector sleeve are brazed in position in a vacuum furnace.

Abstract: An airless spray nozzle comprising a nozzle adapter and a hard, abrasive resistant nozzle tip. The nozzle tip is sealingly brazed within an axial passage of the adapter and is mechanically locked against hydraulic pressure ejection from the adapter by lips formed on the adapter and swaged over the tip. The nozzle adapter is manufactured by a series of machining steps which includes trepanning a recess into the front face of the adapter and then subsequently straddle milling the front face to simultaneously form protective ears on the front face of the nozzle and the lips for mechanically locking the tip into the adapter. After assembly of the nozzle and tip, an outlet orifice is machined into the tip by passing a cutter grinder wheel between the spaced ears and the spaced lips on the front face of the adapter.

Abstract: A first cable is spliced to an intermediate portion of a second cable by inserting an end of the first cable and a stripped intermediate portion of the second into a metallic tube, then forging the tube and cable portions together, then bending the first cable at a desired angle relative to the second cable, then soldering the cables and tube together, and then molding a plastic cover over the tube and exposed conductive portions of the cables.

Abstract: A low-cost method of fabricating a solar absorber panel for use with a flat plate solar collector system is disclosed in which a plurality of formed elongated substantially U-shaped members are fixed in a predetermined configuration to the reverse side of a single sheet absorber member forming therewith hollow fluid passages or ducts. The fluid duct members are provided with a series of tabs which alternately protrude through spaced slits in the absorber panel such that when the tabs are folded over, a tight interlocking construction is produced. The ends of the single sheet absorber may then be folded to form inlet and outlet manifolds connecting the ends of the series of spaced ducts including closing end tabs or the manifolds may be fabricated of U-shaped tabbed members in the manner of the connecting passages. After the mechanical assembly, the entire unit is sealed as by pumping liquid solder under pressure through the unit.

Abstract: An aluminum electrical conductor is electrically joined to a copper electrical conductor by a cold weld lap joint which is substantially free of copper-aluminum intermetallic compounds. The overlapped portions of the conductors are deformed at least 74% and no greater than 82% to achieve a weld joint which has both excellent physical properties and excellent electrical properties. The cold weld lap joint is a reliable electrical connection for electrical circuits experiencing current densities of more than 1000 amperes per square inch and a sustained high temperature of 125.degree. C. and above.

Abstract: A method of manufacturing a yoke and tube arrangement utilizes a forged yoke having an attaching collar with an unmachined outer conical surface. A tube is pressed on the conical surface wedging the tube end radially outward inducing residual compressive stresses and forming a natural fillet. The tube and yoke are then fillet welded together.

Abstract: A method for manufacturing an encapsulated probe or measuring head on sheathed thermocouples, in which thermocouple wires are imbedded in an outer metal sheath with the interposition of an insulating material, and wherein a thermal bead is produced by either an electric or autogeneous process at the sections of the thermocouple wires projecting from the metal sheath at the measuring head end of the wire.

Abstract: A method for braze-assembling metal components having low softening temperatures is provided, whereby selective cooling of specific regions of stabilized dimensions with the aid of heat sinks prevents softening of the metal components at and proximal to the specific regions of stabilized dimensions.

Abstract: A method of manufacturing a magnetron anode and similarly shaped objects provides for the forming of anode vanes from a sheet of bulk material by stamping and the preparation of a tubular sleeve for forming the outer wall of the anode by punching a set of elongated slots therein. The vanes are inserted into the slots after which the periphery of each slot is crimped to cause a plastic flow of the material of the wall against the vanes to secure the vanes in their respective positions. The anode assemblies are then brazed in a furnace to permanently secure the vanes to the outer wall.

Abstract: A reciprocating fluid device is provided in which dynamic stresses in the weld between the cylindrical tube and the base thereof are reduced by prestressing the tube proximal to the weld prior to welding.

Abstract: The invention relates to a piston assembly for compressor and the method of making the assembly. A piston body is molded with spaced apart downwardly open grooves formed with concave semicylindrically shaped summits and parallel side walls. The summits and sidewalls are formed with pimples. A connecting rod pin having a connecting rod attached thereto is press fitted into the grooves. The pimples may serve as weld pimples by being softened by a welding current. The pimples on the sidewalls may alternatively be mechanically swaged to press inwardly against the rod to hold it in its installed position.

Abstract: The present invention relates to a tube joint and the method of assembling the joints wherein a male member that is dimensioned to be telescoped in a cup portion of a female tube member is provided with projecting nibs that project radially outwardly from the outer surface of the male member. The telescoping action of the members together with a rotational movement of the male member causes the nibs to form a locking groove in the inner surface of the female member that extends longitudinally circumferentially and effectively prevents axial movement of the members relative to each other prior to the soldering operation.

Abstract: In a method for producing a hot strip by hot rough rolling, a steel slab heated to a rolling temperature to obtain a steel band, and hot finishing rolling the steel band in a continuous manner, the improvements comprising overlapping a forward end portion of a steel band which is being rolled by the rough hot rolling over a finishing end portion of a similarly rolled preceding steel band before or during the hot finishing rolling step, with insertion between the overlapped portions of the both hot bands of an oxide scale-fusing agent which reacts with the oxide scale present on the opposing surfaces of the overlapped portions by the heat of the overlapped portions and forms a low-melting point substance, fixing temporarily the overlapped portions by means of a metallic nail-like member driven into the overlapped portions, bonding the overlapped portions by reduction, and subjecting the steel bands thus bonded to the hot finishing rolling continuously.

Abstract: Roll of a composite strip can be purchased by spring contact fabricator and fed directly into press for stamping contacts. Composite strip made as follows: Base or body strip fed out of a roll and continuously skived or milled to form slot extending along strip axis and having edge projections. Precious metal contact strip fed out of a roll and inserted into the slot and seam welded to body strip. Projections are then rolled over on contact strip compressing same in slot. Part of precious metal surface left exposed for making electrical connection. Composite strip wound into roll for shipment.

Abstract: An improved mounting arrangement and method of assembly provides for mounting parts on both chassis and board, then mating the two before soldering by means of a twist-tab-and-slot arrangement. The conformation and dimensions of the tab and slot prevent warpage during soldering, enabling the use of the chassis as a board carrier in the wave soldering process.

Abstract: A method of joining metal elements such as heating tubes, pipes, rods, metal cords, or other lengthy elements having similar profiles, with a plate or other flat, molded, metal surface by use of a wire structure which is affixed to at least one of the metal elements at a great number of places.

Abstract: A method of attaching a tube to a wall and particularly to an automotive radiator tank wall in a fluid tight seal in which the tube is provided with inner and outer end flanges on the end that is to be attached to the wall with these flanges spaced apart to define a groove between them substantially equal in width to the thickness of the wall so as to snugly receive the wall therein, providing a slit in the end flange extending for a distance substantially coinciding with the bottom of the groove, arranging at least one of the flange end portions on opposite sides of the slit at an outward angle to provide thereby an angled tab, providing a tube receiving opening in the wall with a slit also defining adjacent wall ends one of which is arranged at an outward angle similar to the angled flange tab, aligning the tube and the opening in the wall coaxially with the outer tube flange in contact with the tank wall at the outer surface thereof, rotating the tube and wall relative to each other thereby causing the tub

Abstract: A method of joining metal sheets together or to shaped bodies, e.g., electric tubular heating elements, wherein use is made of an insert in the form of wire coils, profiled strips, wires or balls which are pressed into the material of the parts which are to be joined together.

Abstract: The invention relates to a method of joining together the ends of tubular metal members by explosive welding and to a permanent, self-aligning backing mandrel for use in the method. The mandrel is in the form of a tubular member having an outer face defining a cylindrical portion and an axially adjacent tapered portion, the maximum diameter of the tapered portion being greater than the diameter of the cylindrical portion. An annular shoulder extends outwardly between the cylindrical portion and the maximum diameter end of the tapered portion, which tapers inwardly away from the shoulder. One pipe end is outwardly flared and fits over the tapered portion of the mandrel and the other pipe end is non-flared and fits over the cylindrical portion, abutting the shoulder. The outer end of the flared pipe end overlaps the non-flared pipe, defining therewith an annular wedge-shaped outwardly-opening space. An explosive is located around this outer overlapping end and is detonated to weld the ends together.

Abstract: The present invention is a method for constructing a solid state diffusion bonded connection which is homogeneous, capable of efficiently transmitting stress and capable of being analyzed. The method provides for the achievement of homogeneous filleted junctures which are required by long-life structural fatigue specifications. The method also provides a mechanical interlock feature which produces a fail-safe connection. By the invented method, only the amount of material required to form the desired structural connection is used. The members to be joined are cut from sheets or plates of a wrought alloy such that a predetermined amount of metal is available to produce the diffusion bond and specified filleting. Minimum force is required to produce the connection since only localized plastic flow diffusion bonding is required in the vicinity of the juncture of the members. The formed connection is homogeneous and has the same properties across the connection as the parent material.

Abstract: A process for welding explosive-clad metal sheets together with one another and/or with metal pipes, connecting elements, or the like, includes producing at least one unjoined zone between the base metal and the cladding metal in a defined manner during an explosive cladding step, and thereafter welding in the region of at least one of unjoined zones.

Abstract: Disc brake backing plate with a cup-shaped housing having in one embodiment a weight sandwiched between two resilient plugs and in a second embodiment, a plurality of scrap punch metal particles mixed with and incorporated in a resilient carrier.