Abstract: A tractor dual wheel remover for loosening the dual wheel rim extension from telescoping frictional engagement with the rim of the adjacent main wheel after removal of connecting links between main-wheel eyelet members and aligned dual-wheel apertures. The device includes a rigid elongate member with a main-wheel end non-rotatably receiving one of the eyelets and a threaded shaft at the opposite end receivable through the corresponding dual-wheel aperture, and nut means on the shaft for off-center spreading to loosen the dual wheel.

Abstract: Improved method and apparatus for making finned tubing from difficult to work materials such as titanium and stainless steel uses spaced sets of finning discs on a plurality of arbors to form a tube against a mandrel having different diameters under each set of discs. By forming the tube fin tips to their final O.D. in a first disc set and by depending their roots to bring the fins to their final height in a second disc set, tubes with higher fin counts and/or higher fin heights can be achieved than were formerly possible. The process of separately cold working the tips and roots also permits tubes to be made which are dimensionally identical to prior art tubes but with higher quality and productivity since tube stresses are greatly reduced. An improved titanium tube is also disclosed which has at least 26 fins per inch, a fin height of at least 0.034" and an outside to inside surface area ratio of at least 3.0.

Abstract: A tube having a plurality of hydraulically parallel fluid passages for use in a heat exchanger can be made by forming an elongated, undulating insert and disposing the same within a flattened tube. A noncorrosive brazing flux is adhered to at least one of the interior of the tube and the crests on the undulating insert. Braze alloy is also located at the interface of the crests of the insert and the interior wall of the tube. Thereafter, the insert is located within the tube without disturbing the flux and the tube deformed along its length to bring the interior of the tube into contact with the crests on the insert. The assembled tube and insert construction is then heated to braze joints between the interior wall of the tube and the crests of the insert along the entire length of the latter.

Abstract: A cylinder construction in which a flexing force can be exerted on the interior surface of a hollow cylinder intermediate the ends thereof. The hollow cylinder is mounted for rotation about a shaft having an eccentric bearing intermediate the ends thereof. An eccentric bearing at each end of the shaft is adjustable to neutralize the effect of the intermediate bearing or to adjust the flexing force on the cylinder.

Abstract: A cable and cable pulling eye assembly prepared by heating the jacket at one cable end portion and radially compressing it to soften and redistribute the jacket material within the confines of a reduced outer diameter. A pulling eye which is too small to fit around the unreduced cable diameter is then fitted onto the reduced diameter end portion.

Abstract: A slit fin heat exchanger is formed by wrapping slit fin tubing around a pair of mandrels having expanded metal cylinders thereon into a flat coil having two spaced rows of tubing. The flat coil containing the expanded metal cylinders is located on mandrels which are rotatable about spaced parallel axes with the mandrels and axes initially being in the same plane. The mandrels are rotated about their axes in opposite directions which shifts the plane in which the coil is located. The shifting of the plane of the coil moves a portion of a first row of the coil into contact with a planar portion of a platen and the second row of the coil into a nesting relationship with the portion of the first row which is in contact with the planar portion of the platen. Continued rotation of the mandrels causes folding of the portions of the coil which extends the area of nesting. The folding takes place through up to 120.degree.

Abstract: A slit fin heat exchanger is formed by wrapping slit fin tubing into a flat coil having two spaced rows of tubing. The flat coil is located on mandrels which are rotatable about spaced parallel axes with the mandrels and axes initially being in the same plane. A piece of expanded metal is placed between the two rows. The mandrels are rotated about their axes in opposite directions which shifts the plane in which the coil is located. The shifting of the plane of the coil moves a portion of a first row of the coil into contact with a planar portion of a platen and the second row of the coil into a nesting relationship with the portion of the first row which is in contact with the planar portion of the platen and the piece of expanded metal. Continued rotation of the mandrels causes folding of the portions of the coil which extends the area of nesting. The folding takes place through up to 120.degree.

Abstract: Improved method and apparatus for making finned tubing from difficult to work materials such as titanium and stainless steel uses spaced sets of finning discs on a plurality of arbors to form a tube against a mandrel having different diameters under each set of discs. By forming the tube fin tips to their final O.D. in a first disc set and by deepening their roots to bring the fins to their final height in a second disc set, tubes with higher fin counts and/or higher fin heights can be achieved than were formerly possible. The process of separately cold working the tips and roots also permits tubes to be made which are dimensionally identical to prior art tubes but with higher quality and productivity since tube stresses are greatly reduced. An improved titanium tube is also disclosed which has at least 26 fins per inch, a fin height of at least 0.034" and an outside to inside surface area ratio of at least 3.0.

Abstract: A method of forming a laminate core of a multiplicity of magnetic plates in a stack, including the steps of assembling the plates and applying a strip of adhesive to a surface of the stack. The adhesive is allowed to dry to hold the plates assembled during subsequent steps, e.g., coating with dry particles of thermoset resin which are subsequently cured to form an integral layer to secure the plates in a substantially rigid unit. In preferred embodiments, the adhesive decomposes at the temperature of curing of the thermoset resin layer.

Abstract: An automotive radiator core subassembly including a plurality of individual tubes disposed in uniformly spaced, parallel relationship with the opposite ends of the tubes seated in openings in spaced parallel headers joined into a rectangular peripheral frame by opposed side frame members with fins inserted between adjacent tubes is assembled by apparatus which includes a pair of finger assemblies operating at opposite sides of a support table. The finger assemblies each include a series of vertically disposed fingers interlinking to each other in a horizontally extensible chain. When the chains are extended, tubes are deposited between the fingers which are so spaced as to provide adequate room to deposit the fins between the tubes. Subsequent compression of the finger chains moves the tubes and fins into their final assembled relationship to each other and aligns the tubes with the openings in header members supported on header carriers on the machine frame.

Abstract: A method of building a filled roll in the form of a load-carrying shaft and a stack of annular fillings sleeved upon the shaft and an end head sleeved upon the shaft at each opposite end of the stack, includes the steps: concentrating compressive forces on the end heads and the stack therebetween in the axial direction of the shaft and on axially aligned concentric loci defined on the outboard faces of the end heads and radially spaced from and circumadjacent the shaft periphery for precluding end head deformation under the applied compressive forces, the surface area of each end face inboard of the respective locus being equal to the surface area outboard thereof as figured from the area of the fillings of the stack, and with the inner end face of each end head having a negative taper at the interface of the end head and the respective end of the stack.

Abstract: A tube stabbing apparatus uses a detachably mounted strongback to support a movable platform upon which a hoist assembly is carried. The platform and hoist assembly is positioned within a boiler chamber adjacent the steam drum of the boiler chamber in order to lift and position generating tubes for cooperative insertion into the steam drum. The platform and hoist assembly is movable in a horizontal plane and has a detachable boom which may be replaced with a longer boom as necessary to install each of the tubes. The entire apparatus is disassembleable to facilitate removal of the apparatus through a very small access opening in the boiler chamber.