Abstract: Copper-clad steel wire is produced by forming a copper tube around the wire, and drawing down the copper tube and wire to reduce the cross-section of the wire by at least 30%. The wire is annealed, slowly cooled and the cross-section further reduced by at least 10%.

Abstract: A method of joining coated large-diameter steel pipes laid underground which comprises placing the steel pipes end to end, applying a layer of heat insulating material to the outer surface of the welding part, covering the ends of the pipe coating the non-coated part of the pipe ends and the layer of the heat insulating material with a layer of a heat fusible, heat adhesive, corrosion resisting material of a shape corresponding to the external shape of the pipes, placing a thin clamp plate around the outer surface of this layer to make it fast, and then internally welding the groove to join the pipes together, whereby the welding heat is utilized effectively and both the corrosion resisting material and the pipe coating are fused by the heat, thus causing the thermally fused corrosion resisting material to adher and solidify on the uncoated portions of the pipes and unite with the ends of the pipe coating and thereby forming a corrosion resisting covering layer.

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: This application involves an adjustable support structure for positioning an exothermic welding mold or other article, i.e., pipe, angle iron, etc., adjacent a surface comprising: an attaching member designed to be removably affixed to a supporting surface; a vertical support member, adjustably mounted on said attaching member; a horizontal support member, adjustably mounted on said vertical support member; an adjusting rod, adjustably mounted transverse to said horizontal supporting member; wherein said adjusting rod includes a member for rotating the adjusting rod thereby imparting a reciprocating motion to an abutting plate mounted on one end of the adjusting rod and said abutting plate being designed to releasably engage an exothermic mold or other article, i.e., pipe, angle iron, etc., adjacent a surface to be welded.

Abstract: Disclosure is made of a method for brazing ferromagnetic materials whereby a metalloceramic braze, containing a ferromagnetic refractory component and a fusible component the melting point of which is lower than the Curie point for the refractory component, is placed in the gap between the materials to be joined. In the gap a magnetic field is created whose lines of force cross the gap and whose intensity is adequate enough to retain within the gap, the ferromagnetic refractory component in the process of brazing during the melting of the fusible component. The zone of joining the materials is heated to the temperature of brazing and then cooled. It is proposed also to use a metalloceramic braze, containing an alloy based on Cu--Co, consisting of 50-90% by weight of Cu, and a Cu-Mn-Ni alloy, containing 50-66% by weight of Cu, 24-34% by weight of Mn, and 2-16% by weight of Ni.

Abstract: Apparatus for furnishing weld material to a surface for welding thereto along a predetermined welding path, comprising an elongate guide (such as a tube) having a contacting surface (typically internal) substantially uniform in cross section and defining a longitudinal guide path (as by a slot opening) corresponding to the welding path, means for maintaining the guide in a position with the guide path adjacent to the surface to be welded and in registry with the welding path, weld material supply means in controlled contact with the guide (as inside the tube) and comprising an elongate flexible member having a contacting surface with its cross section (typically external) shaped to fit slidably in a predetermined position alongside the contacting surface of the guide (as inside the tube), a longitudinal opening through the elongate flexible member, and an elongate piece of flexible weld material (such as a wire) slidably positioned in and protruding from the opening, means for moving the weld material supplyi

Abstract: A method and apparatus for welding a first workpiece which is to be joined to a second workpiece, with said first workpiece extending within or through the second workpiece. The apparatus includes a rotatable workpiece drive member, a workpiece holding fixture for securing at least one other workpiece in position relative to the first workpiece and a radial support for the first workpiece that is separate and spaced from the drive member. Among the preferred embodiments disclosed for providing the radial support are a tailstock supporting sleeve arrangement, collet chucking, and roller type steady rests.

Abstract: The present invention relates to an apparatus suitable for use in the automatic welding of pipes. The apparatus according to the invention comprises a fixed part or rail band which is clamped around the pipe at a prefixed position and a moving part which is driven with an orbital motion along the rail band and supports a swinging welding torch, a welding rod feeding mechanism and a torch position adjusting mechanism. The swinging motion of the welding torch is produced by a pneumatic system which permits both the amplitude and the frequency of said swinging motion to be adjusted. It is also possible to produce high swing frequencies and various times of stoppage for the torch at the ends of the swinging motion.

Abstract: A method of making a pipe string from separate pipes of arbitrary length welded end to end wherein the joints are positioned off forbidden zones. A reference model of the pipe string having the forbidden zones marked thereon and a working model of the arbitrary pipe lengths arranged in random sequence so as to exceed the length of the desired pipe string are prepared, and by shifting the working model with respect to the reference model, a mutual arrangement is found where all pipe joints lie off the forbidden zones marked on the reference model and the excess portions of the beginning and trailing pipe lengths which are to be cut off determined. An automatic line for measuring the pipe lengths, storing measured pipes, welding the pipe lengths together, and cutting off the excess parts in accordance with the working model is used to make the pipe string. A computing device for calculating a working model of the pipe string is also disclosed.

Abstract: A skid steer loader comprising an improved loader main frame and including an operator's compartment designed to present a low profile vehicle particularly suitable for low clearance applications. The loader main frame includes a center compartment partially defined by a pair of longitudinally extending, laterally spaced side beams. The engine for the vehicle is mounted at the rear of the center compartment and is acoustically enclosed by structural elements of the frame. A seat pan mounted on the side beams overlies the engine and transmission and separates the operator compartment from the center compartment. At a forward end of the center compartment an elongated transmission case forms a partial bottom wall and also encloses the chain and sprocket drive system of the vehicle. The side walls of the transmission case are displaced from the side walls of the frame, enabling the operator to straddle the case, thus reducing height requirements for both the operator compartment and the overall vehicle.

Abstract: The load-bearing surface of a laminated plunger in a solenoid is provided with an embedded reinforcing material harder than the laminated plunger. The reinforcing material is made integral with the laminated plunger, by friction welding, only by a thin boundary layer between the contacting surfaces of the laminated plunger and the reinforcing material.

Abstract: An improved process plug for use during immersion soldering of aluminum heat exchanger coils, such as an air conditioner evaporator. The plug allows the solder to flow into an open bell or female socket of a suction header tube to "pretin" the internal finish of the bell or tube joint while preventing the solder bath from entering the coil. The process plug is designed to achieve a "short" or reduced area joint so that the plug can be readily removed by heating. The suction header tube joint is completed by hand soldering of a precoated male copper transition tube.

Abstract: Disclosed is a double side cooled, pressure mounted semiconductor package and a method for the manufacture thereof. The package is formed by directly bonding upper and lower metal contact assemblies to an annular ceramic housing. Assembly is simplified if at least one contact assembly comprises two parts applied sequentially. An annular flange having a central opening approximately the size of the central opening in the annular housing and having an outside diameter larger than the outside diameter of the ceramic housing is direct bonded to one end of the housing simultaneously with a lower semiconductor contact. After a conventional semiconductor pellet is positioned in the housing, the second part, a metal contact disc with an outside diameter approximately equaling the outside diameter of the flange, is positioned thereover. Finally, the flange and the disc are welded around their peripheries.

Abstract: The capacitive fluid pressure transducers described herein comprise quartz bodies and diaphragms having suitable electrodes deposited thereon to form both sensing and reference capacitors in appropriate configurations for high fidelity measurement of relative blood pressure, said transducers being substantially unaffected by temperature and other environment factors.

Abstract: A crop shearing and joining method and apparatus includes a manually operable crop shearing assembly for producing clean linear edges at the ends of respective strips, sheets or the like, and a joining assembly for welding or otherwise securing the ends of two different strips or sheets together. Also, a strip aligning and clamping assembly comprising two independently operable clamping devices utilizes one of the clamping devices to provide an alignment stop for aligning the end of one strip relative to the welding torch or the like in the joining assembly and then uses that aligned strip end to facilitate alignment of the strip end to be joined therewith. Moreover, the clamping devices provide substantially full backing support of the aligned strip ends during the joining operation.

Abstract: An improved propeller shaft liner of the type employed to damp propeller shaft vibrations and apparatus for inserting such liner into the propeller shaft. A tubular liner of paper is formed with a symmetrically disposed series of axially or helically extending groove-like indentations which provide the formed liner tube with a resiliently resisted radial and circumferential compressibility characteristic. This compressibility enables the liner to be inserted into a propeller shaft having an internal diameter less than the outer diameter of the liner, with the liner being symmetrically deformed to engage the shaft in an accurately centered position to achieve a proper rotary balance of the shaft. Apparatus for inserting the tube into a shaft is also disclosed.

Abstract: A tipping fixture for circular saw blades in which a tip supporter and a saw supporter are mounted for relative adjustment toward and away from one another, and for relative vertical adjustment to facilitate brazing a tip to a tooth held in a stable position on the saw support.

Abstract: A method of forming a laminate is disclosed. The method comprises placing a metal film in juxtaposition to a surface to be joined thereto. A buffer medium having an explosive charge on at least one surface thereof is positioned proximate the film. The explosive charge is detonated to propel the film against the surface to shear a portion of the film, corresponding in shape to the surface, away from the buffer medium to bond the sheared portion to the surface.