Abstract: Apparatus and method is disclosed for forming a variety of shapes and sizes of shaped structural members. The apparatus and method includes a first portion on a traveling plate having successive sets of opposed upper and lower roller sections arranged so that the roller sections of one side are adjustable to the roller sections of the other side to partially form the sheet member and cut the member to a selected length. A second portion has successive sets of upper and lower rollers and also has movable roller sections along one side for adjustability. Adjustable entry guides in the front portion establish the lip dimension. The front portion is reoriented relative to the rear portion to establish flange height and the rear portion position determines the web width. Separate drive motors are provided for the first and second portions that are synchronized in operation by using hydraulic motors and hydraulic controls.

Abstract: A roll forming apparatus incorporates tension rolls which feed a material along a longitudinal direction thereof. The tension rolls are arranged at predetermined intervals and are driven. Also, forming rolls which form the fed material are arranged alternatingly on both sides in the width direction of the material between adjacent tension rolls. The roll forming apparatus described above prevents scratches on the material from forming as a result of the material sliding on the forming rolls.

Abstract: A plurality of successively spaced notches are formed in a side edge of a metal strip by first and second adjustably positionable dies prior to roll forming of the strip to a formed configuration. After roll forming, fingers engage selected edges of the notches to detect a notch length dimension and a full part length dimension. Sensors detect the position of the fingers and generate output signals to a controller which generates an adjustment signal based on the switch conditions to adjustably position the first and second dies to accommodate any elongation of the metal strip during roll forming.

Abstract: A roll assembly suitable for use in the production of thin-wall heat exchanger tubes using a high-frequency induction welding tubemill. The roll assembly includes a roll portion that has an arcuate precision profile that defines one-half of the desired cross-sectional shape of the tube being produced by the tubemill. The assembly further includes a shaft portion that directly supports the roll portion so as to serve as a journal bearing for the assembly. At least the bearing surfaces, and preferably the entire roll assembly is formed from ceramic or ceramic composite materials, without any separate bearing components. Moreover, the roll portion of the assembly is formed from a different material than the shaft portion, in a combination that reduces wear between the bearing surfaces of the roll and shaft portions.

Abstract: A machine for forming a metal roof panel of indeterminate length from a uniform width supply strip of sheet metal having a pair of parallel straight longitudinal edges. The machine has a series of spaced forming stations each having upper and lower shaping rollers between which the sheet metal strip is passed so as to impart a desired shape to the sheet metal strip which is uniform the length of sheet metal strip after it exits the apparatus. A stamping station located in the path of the sheet metal strip before the series of spaced forming stations is effective to form linear impressions in the sheet metal strip. The linear impressions are transverse to the longitudinal edges of the sheet metal strip, with each such impression having its lateral extent limited such that the succeeding series of shaping rollers do not impinge thereon.

Abstract: A raft assembly in the roll forming art having a plurality of forming roll stands including a combined horizontal raft plate and first vertical stand formed together in an L-shaped single cast. The first vertical stand supports multiple station pairs of spindles at one end thereof and a plurality of second vertical stands each of which supports the opposite ends of a said pair of spindles on a single roll stand and bolts for attaching the second vertical stands to the raft plate oppositely positioned from said first vertical stand.

Abstract: A method for producing a roll forming allows the hemming step and the roll-forming step to be contiguously performed in a single production line. The first ripping step (E) tears off a side edge strip along the first groove formed by the first grooving step (B) to form a first edge portion having a gradually changed sectional shape. At least the first grooving step (B) and the first ripping step (E) are performed contiguously with the roll-forming step (A) by utilizing the sheet or product conveyance force provided in the roll-forming step (A).

Abstract: This flaw-treatment apparatus is able to prevent an increase in the number of flaw cuts by detecting false flaw-detection, and prevent the occurrence of die marks. For attaining these effects, this apparatus is comprised of: detection of the surface flaws of the wire-shaped metal by applying a flaw-detecting device, cutting and removal of the detected flaws by applying a flaw-cutting device, drawing of the flaw-free wire-shaped metal by applying a drawing device, spraying of lubricant on the wire-shaped metal, and removal of excess lubricant together with dust, and further grinding of the flaw-cut portion of the wire-shaped metal for obtaining adequate surface roughness before grinding.

Abstract: A device for measuring an angle in a workpiece piece which includes a base; a pair of feelers which are movable relative to the base and each of which has an active surface for contacting a respective portion of the workpiece piece during the measurement; a thrust mechanism for bringing the active surfaces of said feelers into contact with the respective portions of the workpiece piece being measured; and a sensor mechanism for detecting the positions of the feelers relative to the base.

Abstract: Roll forming apparatus is disclosed for making half-round gutters and the like includes a series of initial forming stations that roll form a partially formed curved bottom wall, and opposed front and rear walls with a conventional ogee curve and head in the front wall and a hook in the back wall. An adjustably positionable side roller assembly receives the gutter body and while completing the head grips the head and moves the front wall and associated top edge toward the opposite rear wall and associated top edge. A hook forming assembly opposite the side forming assembly balances and stabilizes the gutter body and turns the top edge of the back wall toward the front wall. Two over bending stations after the side roller assembly and hook forming assembly grip the head and hook and overbend the bottom wall to a smaller radius and the opposed walls past a parallel position so the resiliency causes the bottom and opposed walls to spring back to a desired size and shape in the finally formed half-round gutter.

Abstract: An improved elongated gutter system for mounting under the edge of a roof of a structure for receiving water run-off in preference to leaves and debris. The gutter system includes a back support wall having a top and a bottom for mounting against a wall of the structure. A trough is joined to the bottom of the back support wall. A shield is joined with the top of the back support wall and has a free front end. The shield forms a continuous surface that extends from the back support wall and turns inward over the trough before ending, so that rain, leaves and debris move downward over said shield with the rain entering the trough and the leaves and debris passing beyond the trough. The improvement resides in a reinforcing fold-over edge on the free front end of the shield, wherein the fold-over edge is generally parallel to the trough.

Abstract: An automated system for exchanging components of a continuous seam-welded tube mill to change from production of one tubular product to another. The components to be changed are mounted upon sub-base units adapted to be removably affixed to a fixed mill base. Alternate sets of changeable mill units mounted on duplicate sub-base sections are provided for off line tooling change and setup. Changeover modules are provided alongside and spaced from the mill base. Bridging roll units are extendible to span the space between the mill bases and the changeover modules, and push-pull units are incorporated in the changeover modules to shift the sub-base sections from the mill base to the changeover module and the previously retooled duplicate sub-base sections from the changeover modules into operative position on the mill bases.

Abstract: A side panel assembly is disclosed which is of simple construction and provides easy access to the assembly contents for servicing or the like. The side panel assembly includes a front wall (14), a back wall (12) and a side wall (16) which is bent to match the shape of the front (14) and/or back (12) wall. The front wall (14) is connected to the side wall (16) by inserting a fastener (30) through the front wall (14) and a pull-out tab (26) extending from the side wall (16). A method and apparatus for use in constructing the side panel (16) are also provided. The method and apparatus allow for automation of the lay-out, cutting to length, flanging and notching of the side panel (16).

Abstract: A roll forming machine which includes an outboard housing having dual turrets, each turret carries a pair of rotatable arbors which can carry forming rollers. The outboard housing is slidable along guide rails between on-line and off-line positions. In the off-line position the turrets may be indexed to bring the second pair of arbors into a working alignment and thus reduce changeover and down time of the roll forming line.

Abstract: A metal forming machine is adapted to bend flat strips of metal into a desired profile. The machine has a rigid framework that forms a cage in which a drive mechanism is disposed to advance a strip therethrough. An elongated rail structure is secured within the cage's interior and is removable out of one of the entrance or exit of the framework. Preferably, the rail structure is mounted at selected discrete mounting locations spaced laterally of the drive mechanism. A plurality of forming elements are disposed on the rail structure to define at least two longitudinally spaced forming stations, and the forming stations act to bend the strip into the desired profile. The rail structure may be removed from the framework without detaching the mounting stations. A plurality of rail structures may be employed with some of the rail structures formed by a plurality of longitudinally aligned rail sections at least one of which carries a plurality of forming stations.

Abstract: A roll forming device receives a continuous elongated flat sheet of metal to form selected profiles along at least one longitudinal margin thereof. The roll forming device comprises a drive assembly, located within the apparatus frame which engages the elongated sheet proximate to the entryway and advances the sheet in a downstream direction discharge it at an exit. Preferably, at least one guide bar is supported by the frame which also engages the longitudinal margin of the sheet as it is advanced downstream and bends it into a trough-shaped cross-section. The frame houses at least one forming station having a coacting pair of first and second forming rollers journaled for rotation about respective axes. Some of the forming stations may include a plurality of pairs of coacting first and second forming rollers, at least some of which are mounted to be adjustably positioned toward and apart from one another to accommodate varying widths of sheet metal.

Abstract: A method and an appparatus for constructing a roof on a structure using elongated roofing members, as well as the elongated roofing members. Elongated roofing members are produced, preferably near or on the structure, by continuously forming suitable male and female flanges on sheet metal material and periodically cutting the sheet metal material to predetermined lengths. The male and female flanges of adjacent elongated roofing members are interconnected by deflecting a portion of the female flange about the male flange to crimp the male flange between portions of the female flange. A plurality of clips having flanges may be interconnected with the structure, whereby the flanges are engagable, together with the male flanges, with the female flanges to provide for rapid simultaneous interconnection of both the female flange and the male flange with the structure.

Abstract: The can body to be welded in a welding station is shaped by gradually bending flat metal sheets zone by zone along a linear conveying route until the can body has been shaped. This linear conveying route at the same time leads to the welding station. In this manner can bodies can be produced and welded at a fast rate.

Abstract: Machines for producing, processes for producing, and a process for designing tooling to bend longitudinally cyclically variable cross-section members from sheet material are provided. The products are for specific applications, and are produced in machines by processes in which a plurality of sets of rollers with mating non-axisymmetric surfaces are specifically designed and mounted in an accurately spaced serial array for bending sheet material passing therethrough a predetermined amount, concurrently in the longitudinal and transverse directions, depending on the shape of the product to be formed and the ductility, strength and stiffness of the sheet material.

Abstract: A roll forming machine is used for forming material, typically metal strip into various shapes. The machines comprise pairs of forming rolls which are spaced apart along an axis. The profile of the roll pairs progressively change along the axis, so that respective pairs of rolls effect different degrees of folding to material passing between them. As a result, the machine is capable of effecting progressive folding of material fed between the pairs of rolls along this axis. In the present machines, versatility of the machines is improved by using forming rolls each comprising a plurality of roll section elements. The roll section elements are mounted so as to be independently freely revolvable about the axis of the roll and additionally they may be driven so that they are capable of assisting both in folding/forming roll material and in transmitting drive thereto.

Abstract: The present invention is a machine for manufacturing welded steel pipes, in which an edge bending roll for constraining under pressure a strip from its pipe edge portions to the boundaries between the pipe edge portions and its pipe side portions to bend the strip, a first center bending roll for constraining under pressure the pipe side portions to bend the pipe side portions, second to fourth center bending rolls for constraining under pressure the strip from the boundaries between the pipe side portions and its pipe bottom portion to the pipe bottom portion and applying lateral pressure to the pipe from both sides to bend the boundaries and the pipe bottom portion and a plurality of cage rolls arranged on both the sides of these center bending rolls, first and second fin pass rolls for further forming under pressure the pipe, are arranged in order from the stream side to the downstreamside of a roll forming process.

Abstract: A rolling mill has a power source (10) driving a common drive shaft (11) which in turn drives gearboxes (12 to 15). Each gearbox drives a respective shaft (16-19) which in turn drives a roll (20 to 23). A free wheel (24) is provided between the gearbox and forming surface of its associated roll.

Abstract: A method of hot roll forming compound metal channel sections from a bar blank using multiple shaped rollers and progressive roller sets. An inside U-shaped channel section is hot roll formed by rolling opposing channel section towards one another while maintaining support and spacing therebetween.

Abstract: A rolling mill comprising a plurality of roll passes for progressively forming a workpiece to a desired final cross-sectional shape wherein each roll pass comprises a pair of rotatable mountings, the mountings being disposed on opposite sides of a pass line of the mill, each rotatable mounting carrying at least two rolling means of different configuration to form the workpiece to a different final shape and rotation of the mountings permitting a selected rolling means of each mounting to be disposed, at a rolling position, on opposite sides of said pass line to engage and form the workpiece and wherein the mill has a drive means to rotate at least one rolling means of at least one of said roll passes when disposed in said rolling position.

Abstract: The present invention provides a method of manufacturing a shutter to be slidably put on a protective envelope for containing a flexible disk. The method comprises cambering a flat metal strip, punching-out a blank having a shape corresponding to the development of the shutter from the cambered metal strip, and folding the blank along folding lines perpendicular to the cambered edges of the blank in a substantially U-shape. The shutter thus manufactured has opposite side walls cambered away from each other, and an end wall connecting the opposite side walls.

Abstract: Roll-formed parts having joggles or other non-linear bend lines are formed using a pair of forming mandrels having clamping surfaces with non-planar portions which are engaged on opposite sides of a sheet metal blank and passed between successive sets of forming rolls of a roll forming machine. As the mandrels and the blank enter a first roll forming pass, the mandrels and the blank are clamped together with sufficient pressure that the portions of the blank engaged by the mandrels are forced to conform to the shapes of the clamping surfaces. Parts of the blank are moved into engagement with other surfaces of at least one of the mandrels as the blank and the mandrels progress from pass to pass. Specially shaped rolls are provided to insure proper formation of the entire roll-formed part. The roll formed parts may be made from metal having a uniform thickness or different thicknesses.

Abstract: A unique roll forming machine is described which includes a flare control unit for removing flares at the longitudinal ends of the part. An arbor is positioned longitudinally adjacent a pair of flare rollers, and the part moves along the arbor and flare rollers. The arbor moves through an open portion of the part, and forces the ends laterally outwardly, should they be deformed laterally inwardly from a desired location. The flare rollers are positioned longitudinally adjacent the arbor, and bend the ends of the part laterally inwardly, should they be deformed laterally outwardly from a desired shaped. Several embodiments of the invention structure are disclosed.

Abstract: An improved roll forming machine has a machine base, a mounting plate affixed to said machine base, a fixed base plate mounted to said mounting plate, and a movable base plate laterally movable with respect to said fixed base plate. A main block is mounted to said fixed base plate in which are journalled a first plurality of pairs of roller receiving shafts. Journalled to upright stands affixed to the movable base plate are a second or equal plurality of axially aligned roller receiving sleeves which fit over reduced diameter portions of the shafts and are rotated thereby. Movement of the movable base plate causes the sleeves to slide laterally on the shafts and change the width of the workpiece produced by the roll forming machine.

Abstract: A structural member having a complex shape, such as a return flange z-shape, is manufactured by confining a longitudinally-extending mid-portion of a metal strip between a pair of forming mandrels and running the mandrels and the strip as a unitary workpiece from pass-to-pass of a roll forming machine progressively to form the sheet metal about surfaces of both mandrels. The metal strip and the formed part may have a uniform thickness or may have varying thicknesses. The cross-sectional distribution of the metal mass along the length of the structural member may be modified from the original strip. The structural member may have one or more joggles using a mandrel or mandrels having a complementary recess for each joggle to be formed. In such case, one or more of the passes includes a forming roll assembly that is strongly biased, and or resiliently self-biased, toward each recessed portion of the mandrel to force the sheet metal into each such recess to complete the formation of a joggle.

Abstract: A progressive rollformer machine is readily adjustable, without removal of rolls or use of spacers, to produce sheet metal workpiece margin flanges of variable depth. The machine includes a gear train housing having perpendicularly extending spindle shafts and idler gear shafts, and two forming roll housing sections, with their rolls mounted outboard. One of these, conventionally fixed relative to the gear train housing, provides one reference line of forming. The other forming roll housing section provides a second reference line of forming--it may be positioned at a variable distance from the gear train housing, at a spacing adjustable by a screw drive. Tracking throughout all roll stations is made possible by using the adjustable-position forming roll housing first in line of flow, with supplemental tracking rolls mounted onto the ends of the spindle shafts.

Abstract: An apparatus for forming sheet metal panels is provided. One embodiment generally includes a frame structure, a pair of laterally displaced longitudinal supports slidably interconnected with the frame structure, a forming assembly positioned along both of these supports, a plurality of screw rods extending between and threadably engaged with the supports, an advancing assembly positioned substantially about the central longitudinal axis of the frame, and a cutting assembly. The spacing between the supports is adjusted to accommodate for various widths of the sheet metal by rotating the screw rods which either draws the supports in or forces them out substantially the same distance. Sheet metal is then provided to the advancing assembly which engages and moves the sheet metal through the forming assembly. After the desired contour of the sheet metal is achieved by passing through the laterally displaced portions of the forming assembly, the cutting assembly cuts the sheet metal panel to the desired length.

Abstract: A method and apparatus is provided for making three-dimensional metal parts with complex shapes such as skis, automotive trim, and other like elongated parts. The method includes uncoiling an cutting off segments of coiled stock to form a part blank, and mounting the part blank on an elongated jig with opposite sides of the part blank extending outwardly from the jig. The method further includes the steps of slitting the part blank to a predetermined symmetrical but non-uniform width by passing the jig past slitting heads, and roll-forming the slit blank in a similar manner. In the preferred embodiment, the method also includes controlling the vertical rotation of the slitting heads and the roll-forming heads. The apparatus includes a machine for making three-dimensional articles having complex non-uniform lateral cross-sectional shapes along the length thereof. The machine includes slitting heads and/or roll-forming heads adapted to laterally converge and diverge and also rotate about vertical axes.

Abstract: A rolling mill comprising a plurality of roll passes for progressively forming a workpiece to a desired final cross-sectional shape wherein each roll pass comprises a pair of rotatable mountings, the mountings being disposed on opposite sides of a pass line of the mill, each rotatable mounting carrying at least two rolling means of different configuration to form the workpiece to a difference final shape and rotation of the mounting permitting a selected rolling means of each mounting to be disposed, at a rolling position, on opposite sides of said pass line to engage and form the workpiece and wherein the mill has a drive means to rotate at least one rolling means of at least one of said roll passes when disposed in said rolling position.

Abstract: Apparatus for making different residential and commercial building siding of different widths includes a series of roller stations with selective vertical roller positioning adjustments and selective axial lateral roller portion position adjustments. An optional embossing station provides wood graining. A rotary punch forms the holes in a formed one piece nail strip siding.

Abstract: A method by which leads of a semiconductor component are bent into their final shape using a roll forming process to bend the leads into the desired shape before separation of the individual components. The roll forming process achieves a final form by passing a lead frame holding a plurality of the semiconductor components through a series of form rollers which progressively bend the leads into the final shape. The method can be designed to cut the components free from the lead frame as a final step, minimizing the individual handling of the miniaturized components.

Abstract: An improved cold formed, sheet metal profiled building unit and method of making the same are disclosed. The building unit incorporates at least one longitudinal stiffening rib in a longitudinal flat region of the type having a tendency to buckle when subjected to compressive forces. The longitudinal stiffening rib is formed not by drawing-in sheet metal as in current roll forming practices, but, instead, by stretching a segment of the sheet metal. Each longitudinal rib has a profile width, as measured along the centerline of the rib, which is greater than the linear of the sheet metal segment from which it was stretched-in. Roll forming machines incorporating the principles of this invention utilize fewer roll stands than do roll forming machines incorporating the principles of current roll forming practices.

Abstract: Apparatus for making different residential and commercial building siding of different widths includes a series of roller stations with selective vertical roller positioning adjustments and selective axial lateral roller portion position adjustments. An optional embossing station provides wood graining. A rotary punch forms the holes in a formed one piece nail strip siding.

Abstract: A tube weld mill comprising a plurality of successively disposed roll stands to form a strip to a desired generally tubular configuration and a weld means to weld together the adjacent edges of the thus formed strip, each roll stand having a pair of co-operating rolls, a drive transmission to transmit a rotary drive from a driving means to each of said rolls, means removably to secure at least one of said roll stands to a base, means to disconnect said drive from the roll stand to permit of removal of a roll stand from the base and replacement by the same or another roll stand and the drive transmission permitting said disconnection to be performed at a fixed location independent of variation in the separation of the axes of rotation of the rolls of the roll stand.

Abstract: A method of producing an electric-welded pipe by continuously shaping a steel sheet into a tubular form in a hot condition is disclosed, which is characterized by employing a forming roll arrangement of the constant pass-line type in combination with the downward bending system.

Abstract: A cold-forming method is disclosed for thinning localized, longitudinally extending portions of sheet metal by lateral shear deformation without any substantial longitudinal deformation. With such method, it is possible to produce elongated members which are thinned in zones of low stress and are thicker in zones of higher stress so as to provide high metal use efficiency. The method is performed by an apparatus including a rotating mandrel providing opposed conical surfaces and pressure rolls operable to apply forces substantially perpendicular to the axis of rotation of the mandrel to cause a portion of the sheet metal to yield in shear to reduce the thickness of longitudinally extending portions of the sheet metal. The forces are applied in a plane normal to the length of the strip in order to avoid longitudinal elongation.

Abstract: A fire strip for a suspended grid ceiling has an inner spring steel web having a slightly arcuate cross section, and an outer web of soft steel wrapped around the inner web. A finished strip is formed by bending the strip normal to the strip body at both ends. When the ends are bent, a spring-like, yieldable, upwardly curved arch is formed which fits snugly against a panel when in place in a ceiling.

Abstract: The present invention relates to a device for manufacturing conical poles or conical pole members by roll forming sheet metal wherein said device (1) includes a conveyor path (5) along which sheet metal is transported, and a plurality of groups (10) of forming rolls (11, 12) positioned in succession along the conveyor path (5). In order to facilitate the roll forming and eliminate the risk of bending the sheet metal during the roll forming, the forming rolls (11, 12) in at least one of the groups (10) thereof are mounted on frame members (13) which are pivotable about vertical axes (26) such that the forming rolls (11, 12) can be set to run at angles (.alpha. or .beta.) relative to the center line (6) of the conveyor path (5) necessary to achieve a desired conical form of the finished pole or pole member or portions thereof.

Abstract: An apparatus for producing an electric-welded pipe by continuously shaping a steel sheet into a tubular form in a hot condition is disclosed, which is characterized by a forming roll arrangement of the constant pass-line type in combination with the downward bending system.

Abstract: The roll forming machine consists in a succession of stands (1), each carrying at least two parallel forming rolls (12, 13) carried by shafts (48, 49) journaled on either side to a pair of uprights (16, 17) anchored permanently to a base (2) that can be clamped to and separated from the fixed bed (3) of the machine; the rolls (12, 13) of each stand are driven by way of respective p.t.o. shafts (32, 33) mounted to a further fixed upright (27) and carried in journal blocks (34, 35) of which at least one associates with the upright on a floating fit that will allow a margin of transverse movement in relation to the axis of rotation. Self-aligning couplings (38, 39) are used to connect the roll shafts (48, 49) with the p.t.o. shafts (32, 33).

Abstract: Rolling unit supported as a cantilever and comprising pairs of rolls (12) which are supported as cantilevers and have their axis horizontal and/or vertical, such unit (10) including a working area (13) and at the same time an area (14) for replacement and maintenance, such two areas being different and located diametrically opposite to each other at the two sides of an axis of rotation (26), the rolling unit (10) being placed between the two areas (13-14), the axis of rotation (26) being vertical or tilted.

Abstract: A rolling mill machine is for longitudinal bending of plate to selectively provide one of at least two cross-sectional profiles. The machine includes a plurality of shaping stations extending transversely of the plate with at least one drive station for advancing the plate through the plurality of shaping stations. Each of the shaping stations has a first forming element on one side of the plate and a second forming element on the other side of the plate. The first forming element has at least a first set of non-driven forming rolls and a second set of non-driven forming rolls. The second forming element has a plurality of non-driven forming rolls. The first forming element is selectively moveable to position at least one of the first and the second sets thereof for bending of the plate. The rolls of at least one of the first set and the second set are disposed for forming the plate on one side and the rolls of the second forming element are disposed for forming on the other side.

Abstract: A rolling mill machine is for longitudinal bending of plate to provide a cross-sectional profile. The machine includes elements for advancing the plate in a longitudinal direction through a plurality of longitudinally spaced shaping stations. Each of the shaping stations extends in a generally transverse direction relative to the longitudinal direction and includes an upper row of forming rolls and a lower row of forming rolls which are disposed in spaced relationship along the transverse direction for respectively bending the plate advancing therebetween to form the profile. Some of the shaping stations include centrally located forming rolls being longitudinally displaced forwardly of the other of forming rolls in the upper and lower rows for initially bending the plate by these centrally located forming rolls. Additonally, the forming rolls respectively combine with corresponding other forming rolls to form generally converging longitudinal rows of the forming rolls.

Abstract: A roll forming apparatus disclosed has a series of roll forming stations with a first group of stations having rollers that are adjustable to different width settings using the same rollers to form more than one width of ogee type gutter. A cutter uses interchangeable cutting blades and die plates for shearing different gutter sizes to selected lengths. The cutter uses a rotary drive member to move the blade in a path having a relatively short stroke that performs a scissor-like cutting action to successively cut the walls of the formed gutters for each revolution of the rotary drive member. A crank member for manually moving the cutter blade is collapsible and the crank handle is demountable for transport purposes.

Abstract: A refrigerator cabinet has a front flange, which as a gasket on its door seal thereagainst when the door is closed, formed by a plurality of longitudinally spaced sets of rollers of a roll forming machine so that the front flange is at a specific angular relation to a top wall of the refrigerator cabinet when the roll formed part is fabricated into a portion of the refrigerator cabinet. The angular relationship of the flange and the top wall of the refrigerator cabinet is determined at a first fabrication station of a roll formed part, which forms a portion of the refrigerator cabinet after fabrication, by two linear variable differential transformers engaging each of the two adjacent surfaces of the roll formed part that will constitute the front flange and the top wall of the refrigerator cabinet and transmitting signals indicating the angle therebetween to a personal computer.

Abstract: An apparatus for constructing a roof on a structue using elongated roofing members, as well as the elongated roofing members. Elongated roofing members are produced, preferably near or on the structure, by continuously forming suitable male and female flanges on sheet metal material and periodically cutting the sheet metal material to predetermined lengths. The male and female flanges of adjacent elongated roofing members are interconnected by deflecting a portion of the female flange about the male flange to crimp the male flange between portions of the female flange. A plurality of clips having flanges may be interconnected with the structure, whereby the flanges are engagable, together with the male flanges, with the female flanges to provide for rapid simultaneous interconnection of both the female flange and the male flange with the structure.