Abstract: A frame member of rectangular cross section with rounded corners is formed by expansion of a tubular blank within a die cavity having an inner portion of corresponding cross section and an outer transition portion which is of smoothly continuously curved cross sectional profile elongated substantially parallel to the larger dimension of the rectangular section. An outer portion of the tubular blank is deformed to correspond with the continuously curved cross sectional profile and is sealed by a resiliently compressible sealing element of corresponding profile through which fluid pressure is applied in order to expand the blank. By matching the profile of the transition portion to the rectangular inner portion, the transition portion can be made shorter and considerable savings of materials and resources can be achieved.

Abstract: An arm assembly movable about a pivot includes means for holding a recording head slider on the arm assembly. The arm assembly includes an actuator arm supported at one end at the pivot, and a load beam connected to an end opposite to the one end of the actuator arm and extending to the slider. The load beam includes a load beam boss hole of a given diameter and the actuator arm includes an actuator arm boss hole. The boss holes are superposed at a connection of the load beam and the actuator arm. The hub includes a fold of material into an outside surface of the hub. The hub extends through the boss holes to maintain the actuator arm and the load beam together. The hub is swaged (expanded) to fix the actuator arm to the load beam such that the fold in the outside surface of the boss grips the actuator arm boss hole.

Abstract: Products and methods relating to composite materials and their use in coiled tubing is disclosed. The composite tubing is a pressurized means of conveying fluids downhole in a wellbore. It includes a multilayered laminate that resists buckling within the wellbore and is fabricated into a hollow tube. The fibers are oriented in angular relationship to the longitudinal direction of the coiled tubing such as to provide appropriate strength and buckling characteristics to the coiled tubing. Further, the coiled tubing layered laminate may transmit signals representing data from downhole to the surface. In some embodiments, a composite disconnecting device which includes a blend of fibers of different types or orientations is shown. The disconnecting device shows a failure load range corresponding to the failure characteristics of the fiber blend, the fiber blend having a predetermined failure limit.

Abstract: The slow production rates associated with cutting machines for cutting extruded metal tubing to length are avoided in an apparatus that continually cuts extruded metal tubing (46) and which include a reel (44) for providing a coil of (42) of metal tubing (46) to a cutting nip defined by rollers (66) carrying scoring knives (68). The tubing is continuously moved through the nip by a continuously operated set of feeding rolls (70) and then passed to a set of pull rolls (74) which are driven at a more rapid rate to place the tubing (46) in tension to cause it to be severed where scored. Also disclosed is a method of continuously cutting extruded metal tubing.

Abstract: An apparatus for manufacturing a machined article from an elongated tubular workpiece is disclosed. A machining device is movable within a work area of the apparatus and a movable base having first and second spaced apart clamps secure a section of the article. A stationary third clamp is mounted independent of the movable base for holding the article in a stationary position relative to the movable base. A conveyor permits positioning of the article relative to the clamps.

Abstract: An apparatus producing an elongated member having a main body portion and terminal portions extending form ends thereof includes bending an elongated strip between circumferential faces of first forming rolls and second forming rolls having parallel central rotational axes. The circumferential faces of the first forming rolls include annular main body portion bending sections that form the main body portion in the strip and adjacent transition portion bending sections that form adjacent transition portions in the strip, thereby forming an intermediate stage elongated member. The transition portions have a cross-section that changes continuously from the annular cross-section of the main body portion to a different cross-section of the terminal portions.

Abstract: An apparatus for processing the cylindrical shells of drums, which comprises a cradle sized for reception in embracing relation with the shell, the shell having a longitudinal axis, the cradle having support structure to clamp a cylindrical surface of the shell and at lengthwise locations, for supporting the shell; structure operatively coupled to the cradle to effect displacement of the support structure to clamp the shell surface; structure for rotating the cradle about an axis corresponding to the drum shell axis, thereby to rotate the shell about the axis; and tooling facing the shell to engage and process the shell as it rotates.

Abstract: In an apparatus for producing a double-walled structure, such as a silencer for use in a ventilation duct system, use is made of an arrangement having a forming head for forming helically-wound lock-seam tubing. In the forming head, a perforated metal strip is helically wound together with an air-permeable cloth strip such that the tubing fed out of the forming head has an outer cover of said cloth. The tube assembly consisting of the perforated tube and the cloth cover is provided with an outer tubular layer of insulating material and then inserted in a casing which makes the silencer complete.

Abstract: A plant for producing metal heat exchanger tubes with spiral heat exchanger ribs secured to the exterior surface from smooth tubes and strip-form flat material for the ribs. In order to allow ribbed tubes to be economically produced at any desired location, the main plant units needed to produce the ribbed tubes, such as a rotating device, strip conveyor and joining device, are installed in one or more mobile container-type modules in production order.

Abstract: A frame member of rectangular cross section with rounded corners is formed by expansion of a tubular blank within a die cavity having an inner portion of corresponding cross section and an outer transition portion which is of smoothly continuously curved cross sectional profile elongated substantially parallel to the larger dimension of the rectangular section. An outer portion of the tubular blank is deformed to correspond with the continuously curved cross sectional profile and is sealed by a resiliently compressible sealing element of corresponding profile through which fluid pressure is applied in order to expand the blank. By matching the profile of the transition portion to the rectangular inner portion, the transition portion can be made shorter and considerable savings of materials and resources can be achieved.

Abstract: A method and an apparatus for the fabrication of a metal cylinder from a flat metal sheet is described. The cylinder is preferably, but not exclusively, for use in the construction of an outer casing for a hot water heater. Particularly, the method and apparatus is suitable for the fabrication of cylinders of different diameters with minor adjustments being necessitated to the assembly apparatus. A flat metal sheet is fed through a roll former where a curved sheet defining an unconnected cylinder having opposed overlapping free side edges is formed. Flanges are formed along the elongated edges of the cylinder with the flange of the outer overlapping edge being inturned and the flange of the inner overlapping edge being outturned.

Abstract: An improvement is accomplished in apparatus for the continuous production of tubing from tubing stock, and like, elongated, closed structures from appropriate stocks. The apparatus includes welding means for continuously welding the tubing stock to form the tubing, with the welding occurring at a welding station. Downstream of the welding station are stations for the further processing of the tubing after welding, which generate conditions adverse to interior coatings. In apparatus as described, the improvement comprises several inventive features. A spray head provides for spraying of coating, and fits within the tubing. An elongated, flexible lance locates the spraying means downstream of the processing stations which generate adverse interior coating conditions, by introduction of the spray head into the tubing interior upstream of the welding station, and after introduction, movement of the spray head into the desired downstream position.

Abstract: The slow production rates associated with cutting machines for cutting extruded metal tubing to length are avoided in an apparatus that continually cuts extruded metal tubing (46) and which include a reel (44) for providing a coil of (42) of metal tubing (46) to a cutting nip defined by rollers (66) carrying scoring knives (68). The tubing is continuously moved through the nip by a continuously operated set of feeding rolls (70) and then passed to a set of pull rolls (74) which are driven at a more rapid rate to place the tubing (46) in tension to cause it to be severed where scored. Also disclosed is a method of continuously cutting extruded metal tubing.

Abstract: A frame member of rectangular cross section with rounded corners is formed by expansion of a tubular blank within a die cavity having an inner portion of corresponding cross section and an outer transition portion which is of smoothly continuously curved cross sectional profile elongated substantially parallel to the larger dimension of the rectangular section. An outer portion of the tubular blank is deformed to correspond with the continuously curved cross sectional profile and is sealed by a resiliently compressible sealing element of corresponding profile through which fluid pressure is applied in order to expand the blank. By matching the profile of the transition portion to the rectangular inner portion, the transition portion can be made shorter and considerable savings of materials and resources can be achieved.

Abstract: A method and apparatus for making a paint roller cover by spirally wrapping a strip of hot extruded thermoplastic film onto an exterior surface of hollow thermoplastic tubing and spirally wrapping a strip of fabric having a thermoplastic backing onto the spiral wound strip of thermoplastic film while the thermoplastic film is still sufficiently hot to cause the thermoplastic film to flow into interstices in the thermoplastic backing of the fabric and permanently bond the fabric to the exterior surface of the tubing. The fabric covered tubing is then cooled and separated into a plurality of individual lengths of fabric covered tubes.

Abstract: A fill tube for filling a seam-welded tube with a ceramic powder as the seam-welded tube is being made by a tube making mechanism. The fill tube has a guide tube for directing the ceramic powder from a location upstream of a seam welder to a location downstream of the seam welder. A mounting bracket is attached to the upper end of the guide tube and has a powder channel directing the ceramic powder received from an external powder source into the guide tube and a wire channel directing wires received from an external source into the guide tube. A wire guide is disposed at the opposite end of the guide tube which locates the wires in the seam-welded tube as it is being filled with the ceramic powder.

Abstract: A method of forming a dual tube conduit having a predetermined outer tube dimension, a predetermined inner tube dimension, and a predetermined gap between the tubes. A dual tube workpiece may be initially bent in one or more zones to a desired nonlinear configuration, the inner and outer tubes are hydroform expanded simultaneously to obtain the selected inner tube dimension, and the outer tube is then hydroform expanded to the desired outer tube dimension and to the desired gap therebetween, while the inner tube is held constant.

Abstract: An ultra small diameter reinforced catheter or tubular product is produced by winding reinforcing stands on the surface of a plastic tube and introducing the same into a heated die which compresses the strands against the tubing and at the same time heats and softens superficial portions of the tubing wall with simultaneously applying both conductive and radiant heat. This allows the strands to sink into the tubing wall. Following this, the compression and the conductive heating a removed while the tubing continues to be exposed to radiant heat from the die. During this last stage, the tension in the strands induces the strands to assume a predetermined position between the inner and outer surfaces of the tubing.

Abstract: The present invention relates to a method of producing a superconducting composite wire. The method comprises forming a continuously supplied metal or metal alloy strip into a flume-shaped strip. A ceramic copper oxide superconducting powder material is filled in the interior of the flume-shaped strip. The flume-shaped strip is rolled such that a first edge of the strip approaches a second edge of the strip to form a tubing having a gap between the first and second edges and also having the powder material enveloped therein. The gap allows free access of oxygen to the powder material during a subsequent sintering step. The powder material is then sintered at a temperature of between 0 and 100.degree. C. less than the lowest melting point of any constituent of the material. The strip enveloping the sintered material is then deformed to a reduced cross-section and subjected to a heat treatment.

Abstract: A mast forming and deployment system comprising a storage reel for storing a strip of sheet metal wound on the reel, and a tube forming a deployment apparatus. The strip is fed to ploy guides that form the sheet metal into a tube with overlapping edges. A drive system feeds the strip of sheet metal to and through the tube forming apparatus and drives staples which hold together the overlapping edges.

Abstract: A glide support assembly for adjustably mounting a glide on an article, such as a divider panel for dividing a building into a room area. This particularly relates to the details of a support tube arrangement which is inexpensively constructed from sheet metal and is rolled into a tubular form. An upper portion of the tube is provided with axial lances while below the axial lances there are transverse lances which serve to support a washer which restricts the penetration of the upper portion of the tube into the article. In order to save metal, the lower portion of the tube is of a reduced diameter.

Abstract: An improved method of manufacturing galvanized steel tubing from steel strip having at least one galvanized surface, which surface becomes the exterior surface of the tubing is provided. In the method of the invention, after the steel strip is roll-formed and welded to complete the tubing and the welded seam is scarfed to remove irregularities, a quantity of an acid solution is applied to substantially only the scarfed area to react with oxidized metal, and the rinsed, leaving the non-scarfed galvanized exterior surface intact. The tubing is then heated to a temperature sufficient to cause the galvanized coating of the exterior surface to begin to flow and the tubing is regalvanized to produce an improved galvanized exterior surface, which is resistant to cracking along the scarfed area.

Abstract: The present invention relates to a sintered ceramic wire.Ceramic materials, such as A1N, Si.sub.3 N.sub.4 and Al.sub.2 O.sub.3, have various superior characteristics including heat-resistance, and sintered ceramic materials have been of interest as superconducting materials of high critical temperatures.However, various disadvantages are involved in the formation of the sintered ceramic materials as thin wires, and in the practical use thereof.The present invention elminates such disadvantages to provide a thin and long sintered ceramic wire having sufficient strength and toughness to avoid breakage.A sintered wire is made by placing powders of metal oxides, precursors of the desired sintered material, having oxidation potentials less than that of copper, in a tube of a high temperature oxidation-resistant metal. This product is worked to its final size and a sintering step is performed. The method is satisfactory for manufacture of ceramic superconductors.

Abstract: Apparatus for continuously manufacturing plastic-lined metallic pipe. The apparatus includes an extruder having an output providing a plastic sleeve and further includes a continuous roll-forming tubing mill production line. This production line includes a series of forming rolls which progressively deform a substantially flat steel strip to a generally tubular configuration as the strip move along a straight-line longitudinal path. The production line further includes an electrical resistance or high frequency welder which continuously welds the lateral edges of the moving strip to complete the pipe. The apparatus also includes a feed for the plastic sleeve into the incipient metal pipe upstream of the welder. The plastic sleeve has an outside diameter slightly smaller than the inside diameter of the metallic pipe in its as-formed condition.

Abstract: A flat strip-like metallic material having both surfaces coated with a first synthetic resin layer is passed between plural pairs of upper and lower rollers so that a U-shaped recess is formed at the central portion in the longitudinal direction of the strip material and ring-like projection at both edges of the strip material. Then, the strip material is bent into a spiral form. The spirally wound strip material is passed to a transferring means and first, second and third extruders to extrude molten resin and first, second and third pressing rollers operating in association with the respective extruders, whereby a second synthetic resin layer is formed at the outer circumferential portion of the adjoining edges of the spirally wound strip material, a third synthetic resin layer is formed on the back side of the recess portion of the same, and a fourth synthetic resin layer is formed on the outer circumferential surface of the recess portion and the adjoining edges of the spirally wound strip material.

Abstract: A finning and thread rolling machine capable of producing an integral finned tube, an extended finned tube or a wrap-on finned tube, whichever is desired, the tubing to be used for extended surface heat transfer. Types of tubes produced are integral low finned tube, bi-metal fin tube with extruded high finned tube on the outer portion, and extruded integral/high finned tube and spiral strip helical wrap-on finned tube. The apparatus also provides a two and three die thread rolling machine for thru-feed threading and form rolling.

Abstract: The invention provides that a strip of flat steel is formed at its edges with channels which face in opposite directions and the strip is perforated between the channels. The strip is spirally coiled into tube form and a flange of one of the channels engages in the other channel and the adjacent flanges are crimped to form a helical seam in the finished tube. The tube is cut to lengths and the lengths are used in filter elements. The channel flanges are deformed prior to spiralling to facilitate the crimping and the spiralling is enhanced by the use of forming plates having edges which helically follow the curvature of the mandrel leaving a gap for the material so that the edges fit in one of the channels holding the edge of the strip captive until the strip is coiled and the captive edge is properly presented into the other channel. The machine provides a novel form of cutting head for cutting the tube to lengths, embodying a cutting tool which orbits the tube in performing the cutting.

Abstract: A powder-in-tube method of producing an oxide superconduction wire is disclosed in which a preformed copper oxide superconducting powder is continuously filled into a tube precursor having a U shape cross-section formed from a long strip of metal material. The tube precursor is formed into a tube by bending and welding. The resulting tube is drawn to a reduced cross-section and further heated to sinter the packed powder to form the finished oxide superconducting wire.

Abstract: In the method for placing a plastic tube having a predetermined inherent stiffness into existing openings or through-passages a hardenable material, usually a hardenable synthetic resin, is applied onto the wall of the tube before placing the latter into the opening or through-passage. This hardenable material hardens completely only after a certain time period, i.e. after the tube has been brought into its desired position, to thereby increase the original inherent stiffness of the plastic tube. The device for carrying out the method includes apparatus for applying the stiffening material onto the wall surface of the tube.

Abstract: A suspension cable is encased in a metal pipe formed from a metal strip wound in a series of adjacent helical windings on the cable. The longitudinal edges of adjacent windings are connected by a continuous tight fold.

Abstract: A system for making a long length of seam-welded tubing from shorter lengths of flat metal strip which are spliced end-to-end and formed into tubular form and seam-welded. Adjoining ends of two successive lengths of the strip are trimmed at supplementary angles, one of which is an acute angle. The trimmed ends are abutted and welded, preferably with weldment extending beyond each such end. All surfaces of the weld are finished to match the dimensions of the strip. The tubing, along with the welded joints, is heat treated as the tubing is formed to produce a product substantially free of internal surface roughness along the splice welds.

Abstract: There is here provided butt-welded cans made of steel plates having a carbon concentration of 0.02 to 0.09% by weight, the aforesaid butt-welded cans being characterized in that a coating film for preventing the adhesion of melted metal particles is applied to at least the inner surface of the weld portion and its vicinity of each can, and a carbon concentration index I of the weld portion satisfies the formula (1)I=(Iw/Ic).times.10.sup.3 .ltoreq.15 (1)wherein Iw is a K.alpha. X ray intensity, of carbon in the weld portion, measured by the EPMA method, andIc is a K.alpha. X ray intensity, of carbon in graphite, measured by the EPMA method.

Abstract: A method for making endless lengths of nylon coated metal tubing which coating has high mechanical strength characteristics and a low gloss surface finish. The method includes passing the formed tubing through a first powder coating region and applying a layer of nylon generally uniformly surrounding the circumference of the tubing. This first nylon powder coating is heated sufficiently to cause the nylon coating to achieve complete melt-flow into a continuous first nylon coating region which would have a relatively high gloss. The coated tubing is next passed through a second powder coating region with the surface temperature of the first coating still above the melting temperature of the nylon. At this second coating region a second powder coating of the same type of nylon is applied. The second coating is cooled below the melting point of the nylon before the second coating completely melts leaving the outer surface with a very low gloss surface finish.

Abstract: A T-fitting is formed from two precut lengths of tubing of the same, relatively small, inner and outer diameter. One length of tubing is formed with a reduced diameter neck section at one end whose outer diameter is approximately equal to its normal undeformed inner diameter. The second length of tubing is placed in a clamp which is advanced to successive work stations where a sidewall is punched and then drilled through to form a radial hole in one side of a diameter substantially equal to the inner diameter of the tubing. At a subsequent work station, the neck section of the first length of tubing is driven into a force fit into the drilled hole in second length of tubing. The assembled tubing is then removed from the clamp, brazed into a permanent T-tube assembly. The portion of the neck section which projects into the passage of the second length of tubing is then trimmed off by a drilling or reaming operation.

Abstract: Apparatus for forming a non-rotating helix of metal strip. The apparatus includes a store for the strip rotatable about the axis of the helix. The store has a radially inwardly facing circumferential opening from which the strip is withdrawn by guide shoes which are also rotatable about the axis of the helix but at a different rotational speed to that of the store so that the difference in diameter of the strip on leaving the store and entering the helix is accommodated. The guide shoes deliver the strip to guide rollers rotating with the guide shoes by which the strip is guided in a spiral to non-rotating helix-forming shoes from which the coils of the helix are delivered in an axial direction.

Abstract: A large-diameter welded steel pipe having a straight seam and tab plates attached to its ends as extensions of the seam is laid along a setting line with the seam upward. An apparatus for treating the ends of such a pipe has a tab plate cutting unit and a bead removing unit. The tab plate cutting unit cuts the tab plates off with a torch. The bead removing unit removes the weld beads on the inner surface of the ends of the pipe by cutting them with a rotary cutter.

Abstract: A muffler for use on an internal combustion engine includes an enclosure generally cylindrical and having end plates for closing the internal volume of the enclosure, at least one partition plate for dividing the internal volume of the enclosure into at least two chambers, an inlet tube, supported by one of said end plates and at least one partition plate, for conducting combustion gases supplied from the engine to one of the chambers; an outlet tube, supported by the other of the end plates and at least one partition plate, for blowing out the gases from remaining one of the chambers; and a connecting tube supported by said at least one partition plate for interconnecting the volume of adjacent ones of the chambers. At least two of the inlet, outlet and connecting tubes are integrally made of a single sheet of metal shaped to form a combination tube including the at least two tubes. A method of manufacturing such a combination tube is also provided.

Abstract: A scarfing tool for scarfing the inside of a tube-like member in which an elongated body is adapted for attachment to the end of an impeder rod. The body includes a cutting tool and a pair of spaced apart rollers aligned with the cutting tool. A thrust roller is pivotably mounted to the side of the body opposite from the cutting tool and rollers to force the cutting tool against the inner area of the tube member to be scarfed. A pair of first and second hydraulic means having associated pistons which are connected to a common source of hydraulic fluid. The first hydraulic piston is operably connected to said thrust roller for actuating said roller into extended contact with the inner tube member and the second piston is operably connected to a bias means to work against said means as the thrust roller is extended by the first hydraulic piston.

Abstract: A bonded ASP cable includes a multiconductor core which is filled with a waterproofing material. The core is enclosed by a plastic layer (28) which is flooded with a waterproofing material. Wrapped longitudinally about the plastic layer is a corrugated inner shield (31) having a longitudinal seam (35) and having an outer surface covered with a waterproofing material. The inner shield is enclosed by a corrugated outer shield (36) which has an overlapped longitudinal seam (38) and which has an outer surface coated with a layer of an adhesive material. As the outer shield is being formed, a sealant material is introduced into engagement with the inner shield in the vicinity of the longitudinal edge portions of the outer shield. Then as the longitudinal edge portions of the outer shield are overlapped and engaged with each other, the sealant material is caused to flow into cavities between the two shields adjacent to the seam of the outer shield to form a gasket (66).

Abstract: An in-line, continuous, roll-forming tube mill production line. The line includes a supply station for continuously supplying steel strip, a roll-forming station for forming the strip into a tubular configuration, and a welding station for joining by welding the edges of the strip. The line also has at least one station for performing a process which calls for the application of a liquid to the exterior of the tubing such as cleaning, rinsing or applying a coating. A preheating station is provided for preheating of the tubing by induction and a powder coating station applies a plastic coating or a metallically pigmented plastic coating to the exterior of the tubing, the powder coating station having a chamber and means for selectively isolating the tubing from chamber. Finally, the tube mill production line includes a heating station for baking and/or curing of the powder coating.

Abstract: In the installation, a strip is shaped from a split tube which is welded or seamed to give a closed tube in a welding or seaming station. Associated with the welding or seaming station is a suction mechanism used for the removal of on the one hand the cold air flow produced by the moving open tube and on the other the air flow heated during welding and flowing back from the closed tube, as a result of the reduction of the internal cross-section thereof. This obviates air turbulence in the welding or seaming station, which could whirl up the pulverulent material introduced into the open tube in a dosing station and could be deposited on the longitudinal edges of the split tube. This could unfavorably influence the seaming or welding process.

Abstract: A method of manufacturing a cylindrical billet having a predetermined length useable as raw material for producing a pipe. This method is practiced by way of the steps of drawing a cast slab from a casting mold on a continuous casting stand, spirally winding or cylindrically bending it around a rotating mandrel, joining together both end faces of the wound or bent cast slab to a cylindrical body and cutting it to a predetermined length. Two or more cast slabs may be used for forming the cylindrical body. Two rectangular cast slabs may be used as starting material which are subjected to roll forming and thereafter are cut to the predetermined length. They are then press worked to form a recess having a semi-circular cross-sectional configuration whereby a cylindrical body is constituted by assembly thereof in a superimposed relation.

Abstract: Apparatus for the continuous extrusion of metals in which feed is introduced into a pair of circumferential grooves in a rotating wheel to contact arcuate tooling and abutments. The feed is constrained by the abutments to flow through exit apertures in a die top from the respective grooves to a substantially toroidal chamber around a hollow, open ended, portal mandrel to extrude through an annular die orifice as a cladding for a continuous core. Cooling air may be supplied to the interior of the cladding, which is subsequently swaged down on to the core. A solid mandrel may be utilized where it is desired to extrude tube.

Abstract: A method and apparatus are disclosed for fabricating an optical fiber communication cable having a metal containment tube and at least one optical fiber in static compression therein. The containment tube is preferably formed by applying a tensile load to a strip of metal and drawing the strip of metal through at least one forming die. Each fiber is inserted into the forming tube without the application of any significant tension. As a result, each fiber is in a substantially no-load condition at the same time that the strip is undergoing maximum plastic extension and said tube is undergoing elastic tension from the applied tensile load. Upon release of the tensile load, the tube will shrink and each fiber is placed into static compression.

Abstract: Apparatus is provided for the continuous production of tubing from steel strip. The formed tubing is continuously advanced along a straight-line path through polishing and buffing units to provide a smooth lustrous finish to the tubing, and through a coating chamber in which the tubing is coated with a polymer coating to prevent tarnishing of the lustrous polished surface. The finished tubing has a surface which is suitble for decorative applications such as furniture or the like.

Abstract: A pipe-welding mill for production of coiled pipes from coiled strips comprises a coil preparation section including unwinders disposed in a manner allowing displacement thereof in a direction perpendicular to the direction of pipe movement, and a magazine including a reel with set-up coils, the mill further including a strip coupler, shaping, welding, and drawing stands, a coiling arrangement with bending rollers, and cutting and receiving arrangements, the components being successively installed in the direction of pipe movement. Guide or receiving rollers of the receiving arrangement are located on a platform installed in a manner allowing the platform tilt with respect to the axes of the bending rollers, the receiving rollers being connected to the output shaft of the drive of the bending rollers through a universal joint.

Abstract: The invention relates to the formation of a substantially circular metallic shield (37) about a cable core (32) by wrapping a metallic tape (64) longitudinally about the core with longitudinal edge portions of the tape being overlapped by a forming key (100) to provide a closed seam (38). As the seam is formed, an underlying longitudinal edge portion (48) of the shield is supported while an overlying longitudinal edge portion (45) at the overlap is directed inwardly toward the cable core to preclude its protrusion into a jacket (39) which is subsequently extruded over the shielded cable core. A relatively thin strip (145) of metal attached to an inner surface of the forming key assures formation of the seam before juxtaposing the longitudinal edge portions and the core, and avoids penetration of a priorly formed inner shield by the longitudinal edge of the outer shield to prevent rotation of the inner shield and undesirable alignment of the shield seams.

Abstract: An optical communication element comprises an optical fiber bonded in a state of axial compression to a metal tape. The tape may be folded up into a tube and sealed by soldering. Such elements are strong and not sensitive to stress corrosion.Such an optical communication element may be produced by passing a metal tape and an optical fiber in contact around a drum with the optical fiber on the outside. An adhesive, which solidifies or cures during the passage around the drum is applied to the metal tape.

Abstract: A method of and apparatus for uniformly debossing and perforating a ribbon of thermoplastic sheet material or film through the use of vacuum in combination with a flash heating source such as a flow of hot air. The apparatus causes a ribbon of such film to be forwarded from a supply such as a roll of thermoplastic material, then about a circumferentially extending portion of a rotating debossing-perforating cylinder, and then downstream where the debossed and perforated film may be further processed or where it may be wound on a spool to form a roll thereof. The debossing-perforating cylinder comprises a perforated tubular member through which a plurality of independently adjustable levels of vacuum can be applied from within the cylinder to circumferentially spaced sections of the film in contact with the exterior surface of the perforated tubular member. The apparatus further causes a virtual curtain of hot air to be directed radially inwardly towards a predetermined zone of the perforated tubular member.

Abstract: A factory barge for manufacturing reinforced concrete products comprises a batcher plant mounted at one end of the hull for preparing ready mixed concrete, a reinforced concrete product unloader mounted at the opposite end of the hull, and, between the batcher plant and the unloader, in the order mentioned, concrete placers for receiving the concrete from the batcher plant and placing it into elongated molds held in the fore-and-aft direction, compactors for compacting the concrete in the molds, a curer for curing the concrete compacted in the molds, and a mold remover for removing the molds from the cured concrete products. An equipment for fabricating reinforcement cylinders is mounted on a deck above the deck where the concrete placers are installed, and means for transferring the molds from the concrete placers to the compactors, curer, and mold remover is so disposed as to handle the molds while maintaining them in the fore-and-aft direction.