Abstract: A turbomachinery blade including a hollow interior is provided with an improved tip cap comprising first and second members each made of an alloy of a composition and properties different from the other. The first member, in the form of a closure plate bonded to sidewalls of the hollow body, is of a nickel-base or cobalt-base superalloy casting characterized by high mechanical strength properties at elevated temperatures. The second member is a rib of the shape of and bonded to the first member and is of a cast alloy characterized by the combination of resistance to oxidation, sulfidation and thermal fatigue at elevated temperatures. The second member provides an outer tip extension of the blade.

Abstract: A method for assembling rock bit sections in preparation for welding in a manner to assure dimensional integrity. Involved in the method is the use of a clamping fixture that has locator dowels and dowel holes on a base. These locator means are used in combination with a fixed position ring gage, determining the selected diameter of the assembled rock bit, to establish accurate alignment of the sections for clamping and welding. The fixed ring gage and locator means accurately position the sections relative to each other to minimize pre-assembly slippage between the sections.

Abstract: A high energy electron or laser beam is preferably used to assemble a drill bit. Bit segments are integrally adjoined together to form the drill bit assembly. Abutting confronting faces of the adjoining bit segments are aligned parallel to the drill bit axis and are fused together. The parallel alignment significantly simplifies the beam fusion process. The gage of the gage cutting elements of the bit segments is adjusted independently of the process involving assembly of the bit segments. Metal in a leg portion of the bit segments is fused in a zone of predetermined configuration to adjust the gage of the gage cutting elements. The zone of fused metal applies thermal contraction to the leg portion or permanently sets or relieves induced strain forces in the leg portion to permanently deflect the leg portion to a desired position at which the proper gage is obtained.

Abstract: The cylindrical rotating grate of an attrition mill is constructed by welding a group of bars in close spaced parallel relationship, and then rolling this assembly into a cylindrical configuration. The meeting ends of this configuration are then welded, and an opening is preferably cut from the rolled assembly. The area cut out in the process of forming the opening is used as a cover. The grate structure includes solid abutments interengageable with the cover to hold the cover in position against the large forces encountered during the operation of the mill, with relatively light securing means adapted to hold the cover in engagement with these abutments. A housing surrounding the rotating grate is provided with an opening through which the machine is charged with material, and this opening is covered by a curtain preferably provided with battens and a weight to hold it in position. A vacuum is applied to the interior housing for the removal of dust, which assists in holding the curtain in position.

Abstract: A multiorifice structure and a method of making the multiorifice structure is disclosed herein. The structure is made by fusing a plurality of parallel rods stacked in a regular geometric pattern. The interstices between the fused rods form a plurality of small orifices of a noncircular configuration which are ideally suited for atomizing a pressurized fluid. In the preferred embodiment, the multiorifice structure is a fuel atomizer for atomizing the fuel ejected from an automotive type fuel injection valve.

Abstract: A boom is made by joining two tubular members to a cast iron elbow section. The tubular members are made from plate formed into tubes with a longitudinally welded seam. The tube seams are located below a horizontal axis of the respective tube members and circumferentially between the horizontal and vertical axes thereof to dispose the weld seam on a lower side of the boom. Pivotal boom connection means are further welded to each free end of the boom and to the elbow section.

Abstract: The invention relates to a process for the manufacture of a generally flat triangularly shaped metal deflector for installation to the interior non-tangential surface of an inlet pipe to the bowl of a centrifugal separating cyclone. The deflector constricts the inlet cross section to the bowl by about 19% to about 32%. The process comprises the steps of selecting a pipe section of the same size as the inlet pipe and marking the chord ends at the center angle between 118.degree. and 149.degree., preferably close to 120.degree.

Abstract: A cross support assembly is provided which is useful, for example, in earthworking equipment. Such an assembly can be mounted to extend between two lateral supports. A bracket extends laterally from the assembly and can serve as a supportive pivot for a bucket or the like. The assembly is generally hollow and acts as a torsion member. A bulkhead is welded in the cross support assembly and is positioned to directly receive forces exerted on the bracket. Usually the bracket and bulkhead are of unitary construction. The bulkhead extends within a generally tubular cross-member which also forms a part of the assembly and is attached between the lateral supports and into contact with the interior of the tubular member. Forces exerted on the assembly are thus generally compressively applied to the bulkhead welds adding to the overall strength of the assembly.

Abstract: Segments of a rock bit are secured together by electron-beam welding. The segments are slightly spaced apart prior to welding by a thin shim of alloying metal such as titanium which improves ductility of the weld and is a strong carbide-former during welding. The shim is positioned between adjacent segments in the region of the crown or dome of the bit. The resulting welded interface is a fine-grain stress-relieved structure with good ductility and resistance to cracking.

Abstract: An auger manufacturing apparatus comprising an adjustable former mechanism including a plurality of linearly adjustable die roller members and an associated moveable chuck assembly. A conveyor carries a metal ribbon to the adjustable former mechanism which bends the ribbon around a pipe. The pipe is supported in part by the chuck assembly which includes a rotatable ring with a ribbon holding mechanism and an adjustable pipe seat. The cylindrical pipe is mounted in the seat and the leading edge of incoming metal ribbon is securely held by said ribbon holding mechanism.

Abstract: Certain portions of the discharge slots of an existing extrusion die for forming honeycomb structures are blocked off by selectively positioning a plurality of tabs within such discharge slots so as to convert the cellular configuration originally formed by the discharge slots of such die to that of a desired cellular configuration.

Abstract: A method and apparatus for manufacturing a spiral member by cold working an elongated strip comprising attaching one end of the steel strip to a mounting plate on a rotatable axle and driving the axle in rotation to wind the strip onto the axle to form a spiral member from the strip. The strip is guided as it proceeds for winding on the axle by two spaced guide plates on opposite sides of the strip so that each turn of the strip will lie adjacent the previous turn. The position of the guide plates is adjusted with respect to the winding of the strip along a line which forms an angle with respect to the axis of rotation of the strip. After the formation of the spiral member, it is drawn to a predetermined length.

Abstract: A water intake portion of a hydraulic machine consists of a casing and a speed ring positioned between the casing and guide vanes for guiding water from the casing to the guide vanes. The speed ring consists of a pair of upper and lower flat members of a ring form, a plurality of stay vanes positioned between the aforesaid pair of members for interconnecting same rigidly, and a reinforcing member of a cylindrical form, which is welded to the top surface of the upper flat member between the inner and outer circumferential edges of the upper flat member. Edges defining therebetween an opening of this casing are welded to the top surface of the upper flat member of a ring form, of the speed ring in the position between the aforesaid reinforcing member and the outer circumferential edge of the upper flat member, as well as to the undersurface of the lower flat member of a ring form, respectively.

Abstract: A method and apparatus for fabricating pipe centralizers or the like including supporting the centralizer end collars upon a pair of axially aligned spaced apart mandrels, supporting the bows of the centralizers circumferentially about the end collars, simultaneously welding each end of one of the bows to each collar, rotating the mandrels with the collars and bows supported thereon about the axes thereof, and simultaneously welding each end of another of the bows to the collars. The mandrels include a pair of collar clamps for retaining each collar against a collar shoulder, and a plurality of pivotally mounted arms for holding the bows in contact with the collar. At least one of the mandrels is movable axially relative to the other so that centralizers of different lengths may be fabricated, and so that completed centralizers may be removed from the mandrels.

Abstract: A structural unit that is specially formed to include four welded corner sections, which can be temporarily connected together in pairs to form two smaller units for transportation to the point of use, and which can then be assembled together to form a large rectangular structural unit that may have a variety of uses, such as in conveying fluids, or in the construction of buildings, bridges or the like, or in forming tunnels, shafts or the like.

Abstract: A rotor for an eccentric gear pump is formed of two deep-drawn sheet metal halves welded together.

Abstract: A rim element is at first provided with teeth and welded to an apertured disc. The resulting gear is temperhardened and subsequently assembled on a shaft or hub. The gear is welded to the shaft or hub and ground.

Abstract: An autogenous or sinter bond between metallic filter media and other metal components of a filter assembly is produced by joining the parts through a diffusion bonding membrane. The membrane comprises a web of small diameter metal fibrils which will sinter bond to both the filter media and the other filter parts to form a physically strong and leak-free seal.

Abstract: A lightweight low-cost pressure plate for use in a friction clutch assembly that is fabricated of sheet metal stampings and includes an annular U-shaped member providing a friction surface, the U-shaped member opening on the side opposite the friction surface to receive one or more diagonally or radially oriented stiffening members that provide a fulcrum edge for a Belleville spring acting to bias the clutch assembly into the clutch engaged position.

Abstract: A door frame assembly process for conventional railway hopper car discharge openings. Five individual frame components are formed of plate or rolled angle members, and are assemblable in a jig. One dimension of the assembly is defined by the predetermined length of two of the main components, while the other dimension is adjustable in the jig. The door closure surface forming member is a separate component, and may be adjustably positioned with respect to the other four components before being affixed thereto.

Abstract: A method and apparatus for the manufacture of rotary drill bits such as are used for oil well drilling which are constructed from a multiplicity of segments. The segments are provided with registration means for positioning the segments relative to one another and are placed in a fixture where they are sized to a desired outer diameter without sliding the faces of the segment one against the other during the sizing operation. The faces are then brought into abutment, clamped and welded along the abutting surfaces between segments.

Abstract: A contoured work top is provided as a new or replacement work surface to fit over an existing support structure such as a desk or table. The work top has a flat sheet of structural material with a top surface and a bottom surface. A second sheet of structural material is provided having a plurality of spaced apart, parallel raised ribs extending across the second sheet which is rigidly connected to the lower surface at tips of the raised ribs thus supporting the second sheet a spaced apart distance from the flat sheet. Also included is at least one flat strip of structural material extending across the second sheet perpendicular to the raised ribs and rigidly connected to the second sheet at locations between the raised ribs. The work top may also have side walls extending downwards from the edges of the flat sheet beyond the second sheet adapted to retain the work top in place on a supporting structure.

Abstract: A method of making a catalytic converter for use in the exhaust systems of combustion engines comprises the steps of inserting a porous monolithic refractory catalyst element inside a tubular metal shell with a resilient annular fibrous sleeve around the element, securing the element in position inside the shell, and thereafter attaching inlet and outlet headers to the shell by fitting annular end sections on the headers to the exterior end perpheral surfaces of the shell and welding them thereto.

Abstract: An improvement on the end plate shear connection (Table IX, Section 4-57, Seventh Edition A I S C Manual of Steel Construction) in which the end plate has an integral stem plate at right angles to the end plate and offset from the center line of the end plate to compensate for the web thickness of the beam to which the end plate is to be connected. The end plate is secured to the web of the beam by a shop weld with the weld adjacent the end plate fully penetrating the web, the stem plate and the end plate. Before welding, the stem plate is clamped to the web and minor adjustments made so that when welded the finished length of the beam will be proper and the end plate will be properly located and aligned with the center line of the beam. The end plate - stem plate unit is prefabricated in stock sizes. The unit may be a rolled shape. The stem plate may be joined to the end plate by a single fillet weld at the junction between the stem plate and the end plate remote from the web.

Abstract: A positioning fixture is provided for clamping individual segments of a rock bit together in position for an assembled bit with an accurate gage diameter and aligning the seams between the segments with a beam of energy from a welding gun. Relative movement between the segments and the beam causes the beam to traverse the seam in the plane of the seam and fuse the segments together. The segments are indexed by the fixture to sequentially bring the additional seams into alignment with the beam. Relative movement between the segments and the beam causes the beam to traverse the seams in the plane of the seams and fuse the segments together.

Abstract: For forming a lifting lug upon an ingot mould, either as a replacement for a broken-off lug on an existing mould or as a lug on a newly-produced mould formed in the first instance without lugs, a mounting plate is secured to the mould by fasteners driven through said plate and into the mould; then an array of fillets is welded to the plate in correspondence with and in conformity with the desired lug configuration; whereafter a consolidating plate is positioned to overlie the outer edges of the fillets and is welded to the latter.

Abstract: Apparatus for making a spiral muffler includes a mandrel for spirally winding a metal strip while maintaining a predetermined spaced relationship between the wound portions, with the strip being welded to a pair of side plates as it is wound.

Abstract: A method of forming an awning comprising securing longitudinally oriented wires on one side of a length of sheet material and securing laterally oriented wires on the opposite side of the sheet material.

Abstract: A shield or door for openings in the sides of an aluminum reduction pot is constructed from extrusions rolled to a desired curvature and fitted together longitudinally with tongue and groove means. The upper end of the shield is provided with an insulated lip adapted to rest on a corresponding lip of the potline. The bottom of the shield comprises a longitudinal triangular extrusion adapted to rest in a longitudinal groove of the potline. The shield containing a grab handle is adapted to be easily placed or removed from the side openings of the potline and are adapted to prevent noxious gases from escaping from the openings.