Abstract: A method of securing a tube, such as a condenser tube for a refrigeration cabinet, to the inside of the outer walls of the cabinet by means of direct welding between the tube and the oil panel of the cabinet. The tubing is formed to the desired configuration and a plurality of projections are formed on the tube for welding to the surface by a crimping action which indents the sidewalls of the tube at each weld location to produce a projection beyond the normal tubing wall while the rest of the tubing remains undeformed. Subsequently, the configuration of tubing is placed on the sheet and resistance-welded under conditions to produce a relatively light weld adhesion with a small weld nugget that does not create any significant discoloration or distortion on the other side of the sheet which becomes the finished exterior surface of the cabinet.

Abstract: A hot water heater tank is formed from a cylindrical body or tube and a header subassembly. The header subassembly includes first and second headers sized to fit in separately sized sections of the body of the tank. The subassembly, comprising the headers and interconnecting heat exchange tubes, is coated with a protective ceramic material prior to insertion into the cylindrical body of the tank.

Abstract: A process of remanufacturing drilling fluid pump cylinder liners to increase the liner working life and to improve the same involving the steps of: procuring a used liner having a hard metal alloy inner layer from a pump cylinder, and removing portions of the interior metal surface so as to form an enlarged diameter, accurately dimensioned cylindrical surface in the liner. The remanufactured liner is then supplied for use with a specially manufactured piston having an enlarged diameter. Sequential remanufacturing steps can be carried out following several pumping and use cycles so that an orginal liner can be remanufactured multiple times. Prior to the procuring step, the worn liner can be checked while it is retained in the pump cylinder to determine whether extraction is necessary. If desired, the liner can be cleaned by a number of procedures and the outer diameter and configuration checked and, if necessary, resurfaced to restore the original outer surface dimensions.

Abstract: Iron or steel products are produced from oxide ores in a unique process which utilizes air and regular coal as its primary energy source and wherein the ore is melted in a carbon dioxide zone for separation and absorption of the iron oxides into a slag which is transferred to a carbon-monoxide generating zone. In the latter zone the iron oxides are reduced to form the iron or steel product. Carbon monoxide containing flue gas from the latter zone is burned with air and utilized as a heat source in the carbon dioxide zone. Slag from the various unit processes is collected and used to preheat process air by either continuous operation or in a semi-continuous regeneration process. In both modes of slag preheating, flue gas is utilized to maintain the temperature of the slag bath and high temperature air preheating prior to the slag bath.

Abstract: This invention reveals a method of manufacturing a rubber shoe sole having a decorative metal piece incorporated therein comprising molding a metal slug to comply to the shape of a fenced area in a shoe mold while simultaneously shaping and vulcanizing a rubber slug in the shape of said shoe mold at a temperature sufficient to vulcanize said rubber slug with the provision that said temperature be from about 0.degree. C. to about 80.degree. C. less than the melting point of said metal slug.

Abstract: A bearing to be used in an internal combustion engine, comprises a base and an overlay layer formed on said base. The overlay layer comprises an alloy layer consisting of from 5 to 20%, preferably from 10 to 14%, of Sn, from 0.05 to 10%, preferably from 0.5 to 5%, of at least one element selected from the group consisting of In and Tl, from 0.05 to 5%, preferably from 0.2 to 2%, of at least one, wear resistance-enhancing element selected from the group consisting of Sb, Mn, Bi, Ni, Cu, Ca and Ba, and Pb and impurities in balance, all percentages being by weight. The bearing is satisfactorily reliable when used in recent internal combustion engines, wherein the output of the engines tends to be high, and further, the oil drain interval tends to be long.The plating of layers and diffusion between these layers are conducted to produce a bearing which is reliable when used in the recent internal combustion engines.

Abstract: A method of detaching and segregating metallic components secured to metallic articles is disclosed. The segregation is made in accordance with the alloy composition of the components. The method comprises the steps of providing articles having at least two components thereon comprised of different aluminum alloys and heating the articles to a temperature sufficiently high to initiate incipient melting of the component having the lowest incipient melting temperature. While at the lowest incipient melting temperature of the aluminum alloy component, the articles are subjected to agitation sufficient to cause the aluminum alloy component having the lowest incipient melting temperature to fracture and detach itself from the article. Thereafter, the detached components are segregated from the remaining articles and recovered.

Abstract: A method of finishing a rectangular sheet of bright aluminum to provide a central rectangular portion surrounded on its four sides by a brushed satin border. The method of the invention includes the steps of brushing the bright aluminum surface along a pair of narrow bands extending the entire length of the rectangular sheet with the narrow bands being spaced laterally from each other, and brushing the opposite ends of the aluminum sheet between the narrow bands for predetermined relatively short distances inward from the end edges of the sheet. The method further includes sharpening the definition between the brushed satin and bright areas by such procedures as providing a slight bend in the sheet or painting the bright area with the painting extending into the brushed area to provide a sharp transition line.

Abstract: A method for conforming to a circular cross-section the end of a metallic tube of oblong cross-section for a heat exchanger, comprising two steps, one during which the end of the tube is subjected to a radial compression, and the other during which a punch having a diameter equal to that desired for the inner surface of the tube end is forcibly driven into said end.

Abstract: A method and apparatus are illustrated for converting a brake on a rotating turret arm 12 of a paper unwinding stand 10 from a disc brake unit to a drum brake unit which includes providing an adapter bracket 30 by means of which the turret arm 12 accommodates drum brake structure in place of the disc brake unit. The adapter bracket means 30 includes an attachment flange 32 which attaches directly to a mounting plate 22 of a removed disc brake unit 20. A support flange 34 is carried by the attachment flange which pivotably supports brake shoe means 36, 38 which engage a brake drum 46 adapted for connection to an end 16a of the paper roll shaft 16. The drum is hollow and includes a rotary union 60 through which a cooling fluid is circulated.

Abstract: Manual speed adjusted cloth inspection machines are converted to fixed cloth speed machines by replacing the transmission and variable ratio pulley and belt drive system with a cloth speed responsive tachometer controlling the speed of a motor to drive the reel mount at a constant speed through a fixed ratio pulley and belt drive system. Conveniently located, start, stop and reversing switches are provided as well as end of roll speed control.

Abstract: A process and apparatus for mechanically bonding a low friction bearing fabric to a perforated support member by juxtaposing sheets of the fabric and perforated metal, and drawing and pressing together the fabric and metal. Also disclosed is a bearing having a perforated metal support member and a bearing fabric bonded thereto.

Abstract: Method of assembly of a heat exchange unit wherein an annular orifice having a U-shaped cross section is assembled to a heat exchange assembly. The grille of the unit is supported on a support ledge of the fan orifice. An annular top cover having an L-shaped cross section may be engaged to the fan orifice to define a control area space therebetween. The top cover engages a top cover support ledge of the fan orifice and the grille engages a grille support ledge of the fan orifice to form a subassembly.

Abstract: A method of manufacturing bearing assembly for the driven wheels of automobiles comprises the steps of grinding the outer peripheral raceway surface 5, cylindrical seat 6 and shoulder surface 9 of the outer joint member of a constant velocity joint simultaneously by a grinding wheel 21, grinding the outer peripheral raceway surface 11 of an inner annular member and its end surface abutting against the shoulder surface 9 simultaneously by a grinding wheel, and fitting the inner annular member C on the cylindrical seat 6 of the outer joint member B until its end surface 10 abuts against the shoulder surface 9 of the outer joint member B. The method eliminates the influences on the internal bearing clearance of the outer peripheral raceway surfaces 5 and 11 of the outer joint member B and inner annular member C.

Abstract: An apparatus for removing a metal fitting from a high pressure hose and reusing that fitting by applying it to another high pressure hose wherein the fitting comprises an inner sleeve which is inserted into the hollow of the hose and an outer sleeve which clamps the hose between it and the inner sleeve, the apparatus comprising a retainer plate which functions as a fixed seat for the outer sleeve of the fitting, the retainer plate having a bore and a counterbore, the bore having a diameter at least as large as the outside diameter of the inner sleeve and a counterbore having a diameter substantially the same as the outside diameter of the outer sleeve; a push plate adapted to push against a said inner sleeve; and a means of moving the push plate through a linear distance sufficient to disassemble or assemble a fitting on a high pressure hose.

Abstract: A method of making leak-tight tube joints, in a non-brazed tubular heat exchanger or the like, including the steps of expanding tube ends out into mechanical contact with a header plate in which they are received, and, in conjunction with this step, introducing a sealant into tube joints. According to one invention aspect, the sealant has the form of a relatively ductile elastomeric or metallic material and is introduced into a joint as a coating on a tube end. In another invention aspect, the sealant has the form of an anaerobic adhesive and is introduced into the joint as a liquid by a capillary action for subsequent curing in the hidden crevices and voids of the joint.

Abstract: A heat transfer tube assembly comprising a pair of fluid circulation tubes disposed co-axially one within the other, the inner tube being held substantially concentric within the outer tube by a plurality of pairs of diametrally opposed depressions or dimples formed in the peripheral surface of the outer tube at regular intervals. Each depression or dimple projects inwardly such as to engage and indent the peripheral surface of the inner tube and to cause a corresponding portion of the inner tube to bulge inwardly during forming of the dimples in the periphery of the outer tube by forming punches or, preferably, by two pairs of diametrally opposed rolls, each provided with an appropriate dome-shaped protuberance on its peripheral surface for roll forming the dimples as a result of longitudinally feeding the outer tube, with the inner tube disposed within the outer tube, between the rotating rolls.

Abstract: A bag of tough, flexible material, sealed to be liquid tight except for filling and emptying access ports, is designed for mounting in a standard transportation container. The bag is then filled with a bulk liquid and transported in the container to a desired destination where it is again emptied. To avoid the transportation cost of returning many such bags to the point of origin, while nevertheless not simply discarding them, the present invention provides the third alternative of so constructing each bag that, after use, it can be cut to become suitable for use as a tarpaulin. For this purpose the bag is constructed of a central, generally cylindrical, elongated portion extending at each end into a curved end portion. Tie down devices, i.e.

Abstract: A tube support structure for a helically coiled fluid heat exchanger including a plurality of support strips interconnected by a plurality of support members. Two tubes are nested between support members against a support strip, a spring plate is placed over the tubes and a second strip is pressed on the assembly to the desired spring pressure and affixed.

Abstract: A method and apparatus for manufacturing a shaped precision article from molten metal or molten metal alloy wherein a gas atomized stream of molten metal or molten metal alloy is directed at a collecting surface to form a coherent deposit, the stream being cooled in flight by the atomizing gas, which is at ambient, preferably room temperature, sufficient heat being extracted by the relatively cold atomizing gas from the stream of molten metal in flight such that formation of the coherent deposit is independent or substantially independent of the thermal properties and temperature of the collecting surface, provided the temperature of the collecting surface is below the melting point of the metal or metal alloy being sprayed; and the deposit is worked as by a die to form the precision metal or metal alloy article.