Abstract: An assembly for maintaining alignment of a metal strip between successive roll forming means in an apparatus for forming a metal tube is disclosed. The apparatus includes a first set of roll forming means, which form the flat strip of metal into a generally U-shaped cross-sectional configuration, and a second set of roll forming means which form the U-shaped strip into a generally annular cross-sectional configuration. The assembly includes a pair of cylindrical hold down rolls which engage the guide respective marginal edge portions of the U-shaped strip into the second set of roll forming means. The cylindrical hold down rolls are rotatably supported by appropriate shaft means. The end portions of each of the shaft means are supported by vertically adjustable bearing means for adjusting the angular disposition of the shaft and the associated cylindrical hold down roll with respect to the marginal edge portions of the formed strip of metal.

Abstract: Apparatus for forming a sheet metal strip into metal ferrules comprising edge guide means to feed a continuous metal strip into a pair of trim rolls to cut the metal strip to a desired width, and means engage the surplus portion of the metal strip and guide it through a controlled path to return to the edge guide means. A pair of notching or cutting rolls notch the metal strip transversely at axially spaced portions for forming ferrule sections in the continuous strip, and a plurality of pairs of forming rolls for engaging the strip and rolling it to substantially cylindrical shape, which pairs of rolls each have one resiliently positioned roll mounted on a frame by laterally extending support plates.

Abstract: A cold-roll forming stand for forming a flat metal strip into a desired section which includes a pair of upper and lower forming rolls for forming the metal strip lengthwise; a pair of intermediate longitudinal forming rolls for bending or curving the metal strip widthwise are mounted on intermediate vertical shafts, a pair of front longitudinal forming rolls mounted on vertical shafts upstream of the pair of intermediate longitudinal forming rolls and a pair of rear longitudinal forming rolls are mounted on vertical shafts downstream of the pair of intermediate longitudinal forming rolls, whereby the metal strip is subjected to the bending and/or curving lengthwise by the pair of upper and lower forming rolls and widthwise by the front, intermediate and rear pairs of longitudinal forming rolls.

Abstract: A method and apparatus for forming a metal strip into a shape having a transverse concave, convex bow, for example, for forming slats for venetian blinds. The strip material is fed into the nip of a pair of forming rolls having complementary concave and convex peripheral surfaces, to provide the bow. In order to ensure that the resulting bowed strip is formed without any twist, the strip is fed along a substantially straight path upstream of the forming rolls, and the direction of this straight path is adjustable in a plane passing through the nip and parallel to the axes of the forming rolls.

Abstract: A method and apparatus for correcting bow in crowned strip wherein a pair of complementary rolls receive the crowned strip, one roll of the pair being adjustable toward the other, and the assembly being adjustable transversely of the path of strip movement to correct bow.

Abstract: A machine for shaping elongate strips, especially of metal, into a variety of profiles comprises a cascade of working stations in which the strips are subjected to progressive deformation between rollers, some or all of which may be driven to advance the strips along their transport path through the several stations. Each working station has an annular or star-shaped carrier, rotatable on a support about a horizontal axis, with a plurality of peripherally spaced roller mountings adapted to hold a pair of coacting rollers, the various roller pairs on each carrier being differently shaped to produce a selected profile upon being brought into an operating position -- e.g. horizontal on a level with the axis -- by rotation of the carrier. The operatively positioned roller pair can be coupled with a drive mechanism, individual to the respective station or common to all working stations, for positive rotation thereby.

Abstract: A horizontally elongated sheet metal siding panel simulating the appearance of a row of shake-type wooden shingles is produced by forming, in the panel, alternating raised and depressed shingle-simulating portions having surfaces lying in spaced parallel planes and separated by narrow portions that taper upwardly as viewed in projection in the surface planes of the shingle-simulating portions.

Abstract: In a method and an apparatus for manufacturing a metal pipe wherein a flat strip or skelp is formed into a cylindrical pipe while being fed in its longitudinal direction by a forming mill having a prefinishing stand, a train of forming stands for forming the skelp with a U-shaped cross section, and a train of finishing stands, the improvement wherein both edge surfaces of the skelp are caused to contact in substantially point contact recess-defining surfaces of concave V-shaped recess in pairs of forming rolls, the respective rolls which are disposed symmetrically in a plane normal to the pass line as the skelp moves through the train of forming stands along the line, and the skelp has a bending load applied by the forming rolls so as to form the skelp into a U-shaped skelp.

Abstract: The machine comprises a succession of heads each provided with two superimposed rolls and arranged in alignment one behind the other. One of the roll support shafts of each head is connected to a particular hydraulic drive motor and is connected to rotate with the corresponding shaft of each one of the adjacent heads through a connection which is capable of being disconnected. All the motors are connected to the same source of fluid under pressure.In a preferred embodiment, in each head the shaft connected to the motor carries a notched pulley and is connected with the corresponding shaft of each of the adjacent heads by a notched belt engaged with the pulley it carries and with the pulley of the corresponding shaft.

Abstract: A readily adjustable, constant pressure is exerted upon forming rolls of a roll forming machine for ease in setup and to accommodate variations in stock characteristics. In one embodiment, the upper rolls are mounted in a fixed position on roll stands and the lower rolls are supported by hydraulic actuators affixed to the bed of the machine. Alternatively, the lower rolls may be fixed and the upper rolls connected to actuators. As a further alternative, both the upper and the lower forming rolls may be supported by actuators. Hydraulic circuitry for controlling the actuators including regulator devices and gauges at each roll stand is also illustrated.

Abstract: A method of producing cutting teeth for a chain saw each of which has a tooth roof and a base body cranked relative to the tooth roof along a substantially sharp edge. The method includes using as starting material a flat band which at least on one flat side of the flat band has a ridge-shaped projection extending in the longitudinal direction of the flat band. The method further includes cutting the band transverse to its longitudinal axis into sections so that each section has an overall size just sufficient for the formation of a cutting tooth to be formed, while the ridge-shaped projection divides each section into a shorter end portion and a longer end portion. The shorter end portion is bent to form the tooth roof, and the longer end portion is provided with a crank relative to the tooth roof.

Abstract: A rolled steel oil control piston ring for internal combustion engines is of generally U-shaped cross section with a pair of opposed rigid sidewalls projecting inwardly of the ring from a central peripheral wall thereof. A pair of flat-faced solid scraper rims formed by closed pleats rolled from the peripheral wall extend outwardly of the ring. The ring is made by rolling flat strip steel stock through a series of profiled rollers by guiding the edges of the stock without deforming the same, while taking up dimensional variations of the stock by displacement of the central portion of the strip. Pleats are formed in the central portion by the profiled rollers and the pleats are closed on themselves to provide the solid scraper rims. An extrusion-like profile-reducing rolling step provides dimensional accuracy to the finished strip which is then punched to provide the vent openings in the peripheral wall, and coiled and cut to form individual piston rings.

Abstract: A multistation roll form machine for forming an article of complex shape such as a roof ridge vent having integral dams along the inner lateral edges of the ventilation panels includes a longitudinally extending support frame, a first group of individual roll forming stations, a lancing subassembly and a second group of individual roll forming stations. Each of the individual stations includes upper and lower roller die sets for continuously and progressively bending the stock material as it is fed through the machine. The first group of roll forming stations progressively bends the stock on itself to form dam portions integral with the lateral edges of the ventilation panels. The lancing subassembly positioned immediately downstream of the first group of individual stations, includes two pairs of outer and inner lancing rolls having teeth formed around their circumferences which lance the stock to form the ventilation openings.

Abstract: An apparatus for bending sheet metal wherein a plurality of forming rolls are utilized. The rolls are situated at succeeding stations, and a first bending station includes a roll having forming protrusions in spaced apart relationship on the roll surface. The roll also defines drive elements which are engageable by the sheet so that movement of the sheet against a roll drive element operates to drive the roll and to thus move a forming protrusion into contact with the sheet for bending the sheet. Shift means are associated with this roll for locating the drive elements and protrusions in different positions to thereby control the particular drive element engaged by the sheet whereby the particular forming protrusion which performs the bending function can be pre-selected.

Abstract: A mobile roll forming machine for the production of embossed metal siding at a siding installation site with the machine including a pair of adjustably mounted embossing rolls. A guide bar serves to divert the continuous sheet stock away from the embossing rolls to enable the optional production of unembossed or plain siding. A forming station removes sheet imperfections by imparting a transversely extending bowed configuration to the metal after passage of same past the embossing rolls. Adjustment means are operable to open or close the embossing rolls to vary the embossing action which may vary across a section of sheet stock for the purpose of contracting the metal to remedy linear curvature inherent in the rolled sheet stock. The run of sheet stock is reversed subsequent to embossing and passage past the first forming station for travel thereafter through the remaining roll sets of the machine which form marginal areas of the stock into siding configuration.

Abstract: Improved method and apparatus for of making a profiled body of at least one band of material which is profiled by a series of successive forming steps by means of pairs of rotating forming tools. At least one directrix is determined on the band for some of the forming steps coinciding with a marked longitudinal edge of the body and subdividing the band into a first and second band area. Swinging the first area about the directrix in a first direction and simultaneously swinging the second area about the directrix in opposite direction to said first direction in order to reduce tensile stress in one of the exterior edges of the bands at the cost of increasement of tensile stress in the other exterior edge.

Abstract: A plurality of forming stations, each individually numerically controlled to sequentially roll form a blank into a tapered structural member, is disclosed. Each forming station includes upper and lower assemblies of forming rolls mounted on a pair of adjacent shafts so as to generally define an orifice through which the blank passes as it is roll formed. One of the shafts is continuously position adjustable, as are selected forming rolls of the forming roll assemblies. Thus, both the size and shape of the orifice are continuously adjustable. Position sensors continuously sense the positions of the position controllable shaft and forming rolls of each station and generate feedback signals related thereto. The feedback signals are continuously compared with numerical control signals received by a controller. The results of the comparisons produce error signals that are used to continuously control the position of the position controllable shafts and forming rolls.

Abstract: This specification discloses a method of and apparatus for forming concrete reinforcing elements having enlarged ends and also discloses a reinforced composite incorporating such elements. In one embodiment the enlarged ends are formed by folding the edges of a strip of sheet metal onto itself while in another form the enlarged ends are formed by edge rolling a strip. In both cases the reinforcing element is formed by transversely shearing the strip after its edge has been modified. The reinforcing elements as described above are shown to have a greater pull-out resistance than plain elements.

Abstract: A lightweight inexpensive metal rolling apparatus for sheet metal including a lightweight elongate frame, a series of forming rolls secured to shaft's journaled in metal roller wheels secured to the frame and depending therefrom, and a second series of metal-forming rolls operatively positioned in association with the first by metal bars adjustably engaging said metal wheels and dependant therefrom and having shafts fixedly connected thereto and extending therebetween. Inlet guide means are provided for the metal strip and an outlet adjustable roller guide is provided to aid in forming an accurate, straight end product.

Abstract: A roll-forming machine includes a plurality of roll-stands for moving material along a predetermined path and a plurality of die-stands for progressively transforming the material from an initial configuration to a desired configuration. The die-stands are mounted on and positioned by an elongate, rigid spine which permits conversion of the machine from one roll-forming configuration to another by replacing the spine and the die-stands mounted thereon with a different spine/die-stand assembly.The roll-stands each include at least a pair of lower rollers which are selectively positionable transversely with respect to the predetermined path to accommodate materials of various widths in the roll-forming machine.

Abstract: A portable machine for the production of siding of alternative cross sectional configurations from metallic stock, the siding of both configurations being of equal width and including butts adjacent their lower edges and marginal portions shaped for interfitting engagement with marginal portions of adjacent siding strips when the strips are laid. The strips of one configuration have only the lower butt and the strips of the other configuration have an additional intermediate butt. The machine includes a series of spaced pairs of upper and lower shafts, said shafts supporting opposed rollers having shaping elements for gradually shaping the lower butt and the marginal portions of the stock, and certain of said shafts additionally supporting mounting means intermediate said spaced pairs of upper and lower rolls for the support of readily attachable and detachable shaping elements for forming said intermediate butt when desired.