Abstract: Disclosed herein is a light-gauge, ultra-high strength weathering steel sheet with a composition, material properties, and surface characteristics that make it suitable for hot-stamping applications and making hot-stamped products. Also disclosed herein is a high friction rolled carbon alloy steel strip free of prior austenite grain boundary depressions and having a smear pattern. Still further disclosed herein is a high friction rolled carbon alloy steel strip that has been surface homogenized to provide a thin cast steel strip free of a smear pattern.

Abstract: A method of manufacturing a metal mask includes calendering a metal material, so as to form a metal mask substrate, where the metal mask substrate includes a surface and a plurality of grooves formed in the surface, and the grooves all extend in a direction. The surface has at least one sampling region, while at least two grooves are distributed in the sampling region, where an average area ratio of the area of the grooves within the sampling region to the area of the sampling region ranges between 45% and 68%.

Abstract: A speed reducer system includes a speed reducer having a housing. The housing includes an outer surface. The speed reducer system also includes a plurality of cooling fins added to the outer surface via a metal additive manufacturing process.

Abstract: The invention concerns a manufacturing method for an electrical resistor (1), in particular for a low-resistance current measuring resistor, with the following steps (S1-S4): a) providing a plate-shaped base part (9) for the resistor (1), the base part (9) having a certain thickness and corresponding to the thickness a certain value of an electrical component characteristic (R), the thickness-dependent electrical component characteristic (R) preferably being the electrical resistance (1) of the base part (9), the sheet resistance or the transverse resistance, and b) rolling the base part (9) with a certain degree of rolling (AG), the thickness of the base part (9) decreasing in accordance with the degree of rolling (AG) and the value of the component characteristic (R) changing accordingly, c) measuring the thickness-dependent electrical component characteristic (R) on the rolled base part (9), and d) adaptation of the degree of rolling (AG) as a function of the measured electrical component characteristic (

Abstract: The present invention relates to a manufacturing method for a mower cord and includes pressing a resin wire rod and plastically deforming at least part of the wire rod in an axis perpendicular direction. Work-hardening of a surface of the plastically deformed portion allows dramatic enhancement of mowing efficiency.

Abstract: A steel strip is fed and compressed between a driving roller and a compression roller to generate a stress greater than a yield stress in the steel strip and to elongate one periphery portion of the steel strip, which is on one side, more than the other periphery portion of the steel strip, which is on the other side, in a sending direction. The compression roller includes a first contact portion and a second contact portion. The second contact portion extends from an end of the first contact portion in the axial direction of the compression roller. The end of the first contact portion has an outer diameter less than an outer diameter of the second contact portion.

Abstract: Described herein is a method for rolling metal sheets of variable thickness. The method makes it possible to impress, during rolling, any distribution of areas of increased thickness within a figure corresponding to the plane development of a motor-vehicle component prior to the pressing operation. Impression of the desired distribution of areas of increased thickness envisages simultaneous impression, during rolling, of a further distribution of areas of increased thickness, or compensation areas.

Abstract: A roller leveler includes: a leveling roll unit having a plurality of leveling rolls configured to rotate so as to pass a plate while sandwiching and pressing the plate; a pushing cylinder provided at each of an entrance side and a discharge side of the leveling roll unit, at which the plate enters and is discharged, respectively, and configured to press the plate via the leveling rolls; and a driving mechanism configured to rotate the leveling rolls to pass the plate. At least one of the plurality of leveling rolls has a stepped structure, including a lateral center portion with a large diameter, corresponding to a center portion of the plate with respect to a plate width direction, and lateral end portions with a small diameter, corresponding to edge portions of the plate with respect to the plate width direction.

Abstract: Embodiments of the invention comprise forming a billet from molten steel and hot rolling the billet to reduce the cross sectional area of the billet. Thereafter, the billet is hot rolled into a lead pass bar having a cross-sectional area comprising a reduced width dimension located adjacent to the center longitudinal axis of the bar. In one embodiment of the invention, the billet can be formed into a lead pass bar having a cross-sectional area in the shape of an hourglass or peanut by feeding the billet through a first set of rolls. After the lead pass bar is formed, it is passed through a second set of rolls in order to form the substantially continuous threaded rebar without longitudinal ribs. The cross-sectional area of the lead pass bar helps to produce a substantially continuous threaded rebar product without longitudinal ribs using standard rebar manufacturing tooling and equipment.

Abstract: A corrugating unit is used which presses a first corrugation into the pipe which is moved in its longitudinal direction through the corrugating device. The spacing between the wave peaks is subsequently reduced, for obtaining a second corrugation, by a clamping unit composed of two separately arranged clamping devices resting against the pipe. The pipe provided with a first corrugation is pressed continuously by the first clamping device against a fixed point realized by the second clamping device, which, in the position of operation, is arranged, in relation to the clamping device, in axial direction. behind the first clamping device. Both clamping devices are removed cyclically from the pipe and are moved back into a new position in the opposite direction of the direction of movement of the pipe and, in this new position, again rest in the two different areas against the pipe.

Abstract: Embodiments of the invention comprise forming a billet from molten steel and hot rolling the billet to reduce the cross sectional area of the billet. Thereafter, the billet is hot rolled into a lead pass bar having a cross-sectional area comprising a reduced width dimension located adjacent to the center longitudinal axis of the bar. In one embodiment of the invention, the billet can be formed into a lead pass bar having a cross-sectional area in the shape of an hourglass or peanut by feeding the billet through a first set of rolls. After the lead pass bar is formed, it is passed through a second set of rolls in order to form the substantially continuous threaded rebar without longitudinal ribs. The cross-sectional area of the lead pass bar helps to produce a substantially continuous threaded rebar product without longitudinal ribs using standard rebar manufacturing tooling and equipment.

Abstract: Temper rolling at a total elongation percentage of 0.1% or more is performed on a steel strip using a temper rolling mill in which at least one roll stand having high roughness work rolls, the center-line averaged roughness Ra of which being in the range of 3.0 to 10.0 ?m, is provided, or at least one roll stand having bright rolls is further provided downstream of the above roll stand, and as a result, a predetermined elongation percentage, flatness, and center-line averaged roughness can be imparted even to a steel strip having a yield strength of 340 MPa or more at a rolling load approximately equivalent to that for a mild steel without using a large facility and complicated control. In particular, a high tensile-strength cold rolled steel sheet having an Ra of 0.5 to 3.0 ?m and superior die galling resistance is obtained.

Abstract: A method for producing expanded metal profiles, consisting of subjecting a metal strip of width less than the development of the profile to be produced to the following operations: —forming longitudinal slits in at least that longitudinal band which is to form the central web of the profile, —bending the edges of the slits, —profiling said strip, —transversely stretching that band containing the slits, —pressing areas of said central web in correspondence with said stretched band to displace them external to the plane of said web, characterised by subjecting the bent edges to drawing to obtain radiused edging having the tangent to the free edge forming an angle not less than 90° to the surface of the strip.

Abstract: A method of manufacturing serpentine fins for assembly between tubes in a heat exchanger core. The method includes providing a flat metal strip and forming in the strip, multiple rows of split louvers. Each row of split louvers has louvers formed in pairs of adjacent, spaced louver banks extending across the width of the strip. Each row includes ribs formed in the strip parallel to the louver openings and extending across the pair of louver banks. The metal strip has unformed portions extending across the strip width between rows of split louvers for forming folds across the width of the strip. After forming the rows of split louvers, pressure is applied to the strip to cause the flat strip to buckle along the unformed portions forming folds in the strip resulting in the serpentine fin. Preferably, the strip has ribs formed both in the center portion and along the edges.

Abstract: Expanded metal machine includes a stationary knife and an adjustable knife which is adjustable in a vertical direction and a transverse direction. The adjustable knife includes a cutting edge with spaced-apart cutting projections in the transverse direction. A transport device for transporting a flat material in a direction of transport between the knives is provided. A cam is provided and configured for performing a periodic vertical motion. There is a transverse adjustment device configured for adjusting the transverse motion of the adjustable knife in a manner synchronized with the traveling motion. Likewise, there is an eccentric drive provided for the cam, and that is configured for guiding the cam in a circulatory motion which runs in a plane determined (e.g., bounded) by the vertical direction and the transverse direction.

Abstract: A method for manufacturing ultralow-resistance current sensors of size 0402 to 4518 of IEEE specifications includes the steps of: a raw metallic strip being pressed to roll over a first tension roller, a cutting tool over the first tension roller being fed to cut the raw metallic strip so as to form a deep groove thereof along the moving metallic strip, an insulating material being filled into and along the deep groove so as to form an lengthwise insulating portion of the metallic strip, and the metallic strip with the insulating portion being segmented into a plurality of ultralow-resistance current sensors.

Abstract: A corrugated fin cutting method includes continuously conveying a fin material formed into a corrugated shape having a plurality of ridge sections and a plurality of valley sections while regulating a number of the ridge sections and positioning the valley sections; and cutting the fin material at a bottom portion of one of the valley sections between a stationary blade member and a rotating blade member as the rotating blade member rotates in one direction with respect to the stationary blade member while the fin material is being conveyed.

Abstract: A pipe manufacturing system and method for producing helically corrugated metal pipe is provided. The system and method utilize controlled profile formation.

Abstract: There is provided a method of texturing a metal sheet or strip (8), which method comprises a plurality of sequential texturing passes each of which is performed by passing the sheet or strip (8) between at least one pair of rollers (7), wherein at least one of each pair of rollers (7) has a textured pattern on the surface thereof and the textured patterns are transferred to the sheet or strip (8) during each texturing pass, and wherein the textured surface on the sheet or strip (8) resulting from each pass overlaps with that from the one or more other passes to form a final textured pattern. There is also provided an apparatus for texturing a metal sheet or strip (8).

Abstract: This invention describes both a method and apparatus to practice a method which produces a strip-like pre-material from metal using rollers which have a roll gap in which the metal strip is discontinuously rolled in successively steps between the same two rollers with the metal strip being also recalled, but the recalled section of the metal strip is shorter than the circumference of the rollers. In this manner the surface quality of the metal is improved, especially relating to stamping of coins and metals.

Abstract: A procedure for obtaining partially corrugated sheet metal (11) comprises the following work phases: provision of a roll of sheet metal (11) to feed a respective means of unrolling and transferring said sheet metal (11); compression of said sheet (11) in such a way as to produce a series of transverse corrugations alternating with flat sections on the sheet (11); transfer of said sheet (11) towards a press brake (16) to fold the sheet, parallel to the axis of the corrugations, in correspondence of the central portion of each flat section, and in the opposite direction with respect to the fold of the previous flat section in such a way as to obtain a coil of sheet metal (11) with corrugations on adjacent sides; extraction of the corrugated sheet (11) from the press brake (16) and shearing of said sheet (11) into pre-established lengths. Through such procedure it is possible to manufacture an improved air-air plate-type heat exchanger.

Abstract: A procedure for obtaining partially corrugated sheet metal (11) comprises the following work phases: provision of a roll of sheet metal (11) to feed a respective means of unrolling and transferring said sheet metal (11); compression of said sheet (11) in such a way as to produce a series of transverse corrugations alternating with flat sections on the sheet (11); transfer of said sheet (11) towards a press brake (16) to fold the sheet, parallel to the axis of the corrugations, in correspondence of the central portion of each flat section, and in the opposite direction with respect to the fold of the previous flat section in such a way as to obtain a coil of sheet metal (11) with corrugations on adjacent sides; extraction of the corrugated sheet (11) from the press brake (16) and shearing of said sheet (11) into pre-established lengths. Through such procedure it is possible to manufacture an improved air-air plate-type 5 heat exchanger.

Abstract: There is provided a method of texturing a metal sheet or strip (8), which method comprises a plurality oF sequential texturing passes each of which is performed by passing the sheet or strip (8) between at least one pair of rollers (7), wherein at least one of each pair of rollers (7) has a textured pattern on the surface thereof and the textured patterns is transferred to the sheet or strip (8) during cach texturing pass, and wherein the textured surface on the sheet or strip (8) resulting from each pass overlaps with that from the one or more other passes to form a final textured pattern. There is also provided an apparatus for texturing a metal sheet or strip (8).

Abstract: A device for producing metal fibers from a metal wire includes a forming assembly and a cutting assembly arranged downstream from the forming assembly in the direction of production. Both the forming assembly and the cutting assembly are driven by a driving mechanism and are mechanically synchronized. The cutting assembly includes a cutting roller and a mating roller, the cutting roller having cutting elements extending radially outwardly from a circumferential surface of the cutting roller and are uniformly distributed over the circumferential surface. The cutting roller and the mating roller are arranged at a minimum distance, one above the other, where either the cutting roller or the mating roller is arranged above a travelling path of the wire, while the other is arranged below the travelling path of the wire. During fiber production, the wire passes substantially tangentially between the cutting roller and the mating roller.

Abstract: A tubular blank (22) is rolled on a mandrel (14) in a pilgrim rolling mill. In a first rolling stage, a first part of the blank (22) is rolled on a first part (18,19) of the mandrel (14), with a reduction of the outside diameter of the blank (22) to the outside diameter of the guide tube and a reduction of the wall thickness of the blank (22) to one of a first wall thickness (e1) and a second wall thickness (e2) exceeding the first wall thickness (e1). The mandrel (14) is advanced in the axial direction. A second part of the blank (22) is rolled on a second part (20,21) of the mandrel spaced from the first part in the axial direction with a reduction of the outside diameter of the blank to the outside diameter of the guide tube and a reduction of the wall thickness of the blank (22) to the other of the first wall thickness (e1) and second wall thickness (e2).

Abstract: A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with each other, while giving the dies a swinging motion in such a manner that the portions of the forming surfaces of the dies, in contact with the material 1, are transferred from the upstream to the downstream side in the direction of the transfer line.

Abstract: A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with each other, while giving the dies a swinging motion in such a manner that the portions of the forming surfaces of the dies, in contact with the material 1, are transferred from the upstream to the downstream side in the direction of the transfer line.

Abstract: Slow production speeds in the manufacture of lanced and offset fins for use in heat exchanger tubes are eliminated through the use of a method of forming the fins involving a plurality of roll assemblies located along a forming path which may operate on a strip of fin forming material of indeterminate length. After being formed, the fin may be cut to any desired length.

Abstract: Round bars are successively rolled through first and second roll passes. Each roll pass is defined by a pair of work rolls having cylindrical rolling surfaces with notches therein extending transversely and obliquely with respect to the rolling line, and with the roll axes defining the second roll pass being offset at 90 with respect to the roll axes defining the first roll pass. The first pair of work rolls is arranged to configure the round bar into an intermediate process section having flat parallel first sides with first ribs protruding therefrom, and the second pair of work rolls is arranged to reconfigure the process section into a finished concrete reinforcing element having flat parallel sides which are perpendicular to the first parallel sides and which have second ribs protruding therefrom.

Abstract: A process for producing at least one structured metal sheet, a process for producing a laminated metal sheet pack and an apparatus for producing structured metal sheets, include initially subjecting a strip of sheet metal to a structuring operation to form a structure having a structural height which is greater than a theoretical or desired structural height. The structuring operation is followed by a calibration operation in a calibration unit. The structure is guided through two rollers of the calibration unit in such a way that the height of the structure once it has passed through the calibration unit corresponds to the theoretical or desired structural height.

Abstract: A deformable sheet material at least partly comprising a sheet metal or metal foil which is corrugated, e.g. by rolling, in continuous waveform in two directions (A, B) substantially orthogonal to each other. The sheet material can comprise aluminum foil with a thickness between 0.005-0.4 mm designed as a ribbon or a strip which prior to the rolling is folded in the longitudinal direction where an intermediate layer, e.g. of aluminum, can be placed between the two material layers.

Abstract: A continuous cold-forming of strip material is used to produce building elements having transverse ribs extending across at least part of the element. The inherent adverse tendency of thin strip to twist and distort as it issues from a transverse rib forming device is prevented by providing a stress relief device for applying a compression load to the transverse ribs immediately downstream of each pair of transverse rib-forming rolls. The stress relief device includes a first roller device and a second roller device forming a nip for receiving the ribbed strip, wherein each roller device is disposed to engage an outer crest portion of each rib projecting towards it. The second roller device includes a pair of substantially parallel coextensive spaced-apart second rollers and the first roller device includes a first roller, the first roller being substantially parallel to, coextensive with and equi-spaced from each of the second rollers.

Abstract: The method and device for machining a sheet and controlling the thickness between the opposite faces of said sheet in a press between sheet engaging surfaces, at least one of which is a bearing surface of narrow width extending across the width of the sheet, in which the space between them is controlled to modify the thickness of the sheet in a series of successive steps which include moving the sheet relative to the sheet engaging surfaces, stopping the movement of the sheet and moving the sheet engaging surfaces against the sheet to compress the sheet to a predetermined thickness and controlling the stepped movement of the sheet and the movement of the sheet engaging surfaces in alternate and successive sequences.

Abstract: An apparatus for producing a metal sheet with a corrugation configuration that is of a first corrugation height, wherein the sheet has transversely or at an angle relative to the corrugation configuration a microstructure having a second, substantially smaller corrugation height. The apparatus includes a device for producing the microstructure, and a pair of mutually meshing corrugation rollers that are disposed downstream of the device for producing the microstructure. Wherein the corrugation rollers have at their outer surfaces recesses which are suitably disposed and sufficiently large to receive the microstructures, so that the microstructures are not deformed by the corrugation rollers in the operation of corrugating the metal sheet.

Abstract: A fin mill machine for forming electrically conductive strip stock into corrugated fin material includes a form roller for forming corrugations in the strip stock, which is at an electrical common. A detector detects when the strip stock wraps up around the form roller. The detector includes an electrical circuit having a source connected to a load by a probe. The probe is positioned adjacent the form roller to contact the strip stock when the strip stock wraps up around the form roller such that the electrical circuit has an effective load different than the load. A controller is operable with the detector to monitor the effective load of the electrical circuit. The controller disables the form roller when the effective load of the electrical circuit is indicative of the probe contacting the strip stock.

Abstract: A metalworking iterative method of cold-working blanks into configurations having contiguously repeated predetermined forms wherein an advance-worked form functions to locate a succeeding form. A first portion of a blank is squeezed into a predetermined form in a forming position of a press. The predetermined form corresponds to one cycle of the reciprocal undulations of an undulated plate spring. The blank is then shifted in the feed direction of the press by a feed pitch corresponding to one undulation, thereby locating the worked first portion of the blank into a locating position of the press, meanwhile a pitch-length second portion is in the forming position. Accordingly, the accuracy of the succeeding press operation on the second portion in terms of its contiguous position relative to the worked first portion is secured.

Abstract: An apparatus for gripping, guiding and transporting opposite longitudinal side edges of slit, deformable strip for forming expanded mesh sheet. One chain of each of two pairs of opposed endless chains has a longitudinal recess adjacent a longitudinal planar side edge of the strip for receiving the planar edge of the strip therein and the opposed chain of each of said pairs has a plurality of equispaced sharp projections for penetrating the longitudinal planar side edge of the strip whereby the said edge is effectively gripped between the opposed chains during expansion.

Abstract: According to the present invention, a brake unit is disposed at a side of the forward direction of the fin material from a reforming unit. The brake unit contracts the fin material so that the adjacent folded portions contact with each other while being reformed. Thus, the contracted fin material is in a stable state not to be deformed easily. In this way, even if moment tilting flat portions of corrugated fin is given by the reforming unit, the flat portions are prevented from tilting. A concave or convex deformation of the folded portions can be reformed satisfactorily.

Abstract: A method of producing corrugated fins employing a fin mill machine (12) for forming strip stock (14) into corrugated fins (16) to form heat exchanger fins or the like. A fin mill machine (12) that can carry out the method includes a tension control subsystem (20) employing a pneumatic cylinder (32) to create the tension which is controlled by a feedback loop which automatically adjusts cylinder pressure based upon measurements from a strain gauge (44). The fin mill machine also includes a height measurement subsystem (22) which continually measures the average height of the fins in a packed state, which allows for manual or automatic feedback to the tension subsystem (20) to adjust the average fin height.

Abstract: An apparatus for roll forming convoluted springs in which a tempered steel strip is fed between a pair of forming rolls which produce a continuous convoluted steel strip. A compression mechanism downstream of the pair of forming rolls compresses the continuous convoluted steel strip to set the angular relationship of the adjacent legs of the convoluted steel strip. A cut-off mechanism disposed downstream of the compression mechanism device severs from the convoluted strip individual convoluted springs having a predetermined number of convolutions and desired spring characteristics.

Abstract: The method for the zigzag-like folding of a strip-like foil includes the following steps in an advantageous embodiment:1. prepleating, whereby a zigzag-like or wave-shaped folding is effected in which the folded edges are formed in cross-section as arcs with a radius of curvature greater than about 1 mm;2. follow-up forming of each second folded edge in that a coining tool is used to influence the fold angle and to reduce the radius of curvature of the folded edge to a value smaller than 1 mm;3. follow-up forming of the remaining folded edges in the same manner as during the second step. The follow-up forming steps are executed with tumble pressing devices which respectively include a rotatable toothed roll and a coining tool. The coining tool is drivable by means of an eccentric device and is connected via a pendulum axle with a vertically displaceable slider.

Abstract: An apparatus which is used to impart a specific configuration to substantially flat elongated strips of deformable wire binding elements for stacks of overlapping perforated sheets or the like has a transporting unit serving to advance binding elements lengthwise in a predetermined direction along an elongated path, a unit which converts strips in a first portion of the path into transversely curved intermediate products having a substantially C-shaped cross-sectional outline and a shape which at least approximates the predetermined configuration, and an altering unit which serves to deform--in a second portion of the path downstream of the first portion--at least those intermediate products the shape of which departs from the predetermined configuration.

Abstract: A fin mill machine (12) for forming strip stock (14) into corrugated fins (16) to form heat exchanger fins or the like. The fin mill machine (12) includes a height measurement subsystem (22) which continually measures the average height of the fins in a packed state, which allows for manual or automatic feedback to the tension subsystem (20) to adjust the average fin height.

Abstract: A fin mill machine (12) for forming strip stock (14) into corrugated fins (16) to form heat exchanger fins or the like. The fin mill machine (12) includes a tension control subsystem (20) employing a pneumatic cylinder (32) to create the tension which is controlled by a first feedback loop that automatically adjusts cylinder pressure based upon tension as measured by a strain gauge (44). Adjustments to the pressure in the pneumatic cylinder (32) can also be made by a second feedback loop based on air pressure measurements from a pressure transducer (58) for use in a set-up or trouble shooting mode.

Abstract: A fin mill machine (12) for forming strip stock (14) into corrugated fins (16) to form heat exchanger fins or the like. The fin mill machine (12) includes a tension control subsystem (20) employing a pneumatic cylinder (32) to create the tension which is controlled by a feedback loop which automatically adjusts cylinder pressure based upon measurements from a strain gauge (44). The fin mill machine also includes a height measurement subsystem (22) which continually measures the average height of the fins in a packed state, which allows for manual or automatic feedback to the tension subsystem (20) to adjust the average fin height.

Abstract: One side of a sheet- or plate-like bank of metallic, plastic and/or other material is provided with at least one set of parallel grooves prior to being provided with an array of pyramidal and/or conical depressions. The grooves can be formed by brushes or by grinding, and the depressions can be formed by a rotary debossing tool having a peripheral surface provided with crossing transversely extending rows and circumferentially extending columns of protuberances. The treatment enhances the ability of the one side of the thus obtained sheet- or plate-like body to accept and retain a layer of lacquer, to be provided with an adherent layer of oxide or to accept a layer of adhesive prior to being bonded to a similarly treated or to an untreated second plate- or sheet-like body. The depth of the depressions can match or approximate the average depth of the grooves. The grooves can form two sets of parallel grooves, and the grooves of one set can cross the grooves of each other set at an angle of 90.+-.45.

Abstract: A heat transfer cell for employment in heating, ventilation and air conditioning applications, and an apparatus for producing metallic plates which can be employed in the construction of the heat transfer cell. The cell comprises a plurality of heat conductive plates stacked on each other and having upstanding fins extending substantially the length of each plate. A leading edge portion of each fin is folded laterally to thereby create a turbulent effect to air traveling linearly between adjacent fins and plates.

Abstract: Apparatus for forming fins along a web of metallic material utilizing first and second opposed endless chains, and with the first chain adapted to support the web of metallic material thereon, and comprising a plurality of spaced-apart anvil links. The upper chain includes a plurality of spaced-apart links operating in registry with the base chain and including work-engaging, fin-forming lugs which enter the gap between mutually adjacent anvil links. The apparatus further includes a chain-deflecting idler roll which deflects the base chain arcuately away from its normal plane so as to effectively reduce the spacing between adjacent anvil links and create a web back-breaking zone for achieving a firm and solid crimping of that portion of the web forced thereinto by the fin-forming lugs.

Abstract: A machine for making corrugated fins or air centers for heat exchangers from strip stock has forming rolls, packing rolls, metering rolls and two pairs of pullout rolls, each pair having a different number of teeth to produce a different pitch of convolutions. The pairs of pullout rolls are mounted for movement apart or together under control of a cam mechanism so that one pair yielding the desired pitch can engage the centers to set the pitch while the other pair is moved apart to disengage the centers.

Abstract: A process and an apparatus for producing a component of tires by passing a wire sheet (3) between a pair of gear-shaped rolls (6), (6) in meshing engagement therewith to vertically corrugate the sheet for reforming, the wire sheet (3) comprising wires (4) arranged side by side in a plane and covered with an elastic material (5), and thereafter passing the sheet (3) between a pair of rolls (13), (13) to thereby lay down the reformed vertical corrugations into a planar arrangement.