US3452568A - Apparatus for continuous forming of strip material - Google Patents

Apparatus for continuous forming of strip material Download PDF

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US3452568A
US3452568A US3452568DA US3452568A US 3452568 A US3452568 A US 3452568A US 3452568D A US3452568D A US 3452568DA US 3452568 A US3452568 A US 3452568A
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strip
rolls
forming
roll
shaft
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Bernhard Vihl
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Bernhard Vihl
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D5/00Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/06Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
    • B21D5/08Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles making use of forming-rollers

Description

July 1, 1969 r Y B, VIHL 3,452,568

APPARATUS FOR CONTINUOUS FORMING OF STRII: MATERIAL Filed Jan. s1,- 1967 Sheet of 8 INVENTOR.

' BER/VHA/PD V/HL A TTOR/VE Y July 1, 1969 v 3,452,568

APPARATUS FOR CONTINUOUS FORMING OF STRIP MATERIAL Filed Jam-31, 1967 Sheet 5 of 8 INVENTOR. v HERA/HARD V/HL ATTORNEY Sheet .F aw i a l m u an H m 1 INVENTOR. BERNHARD V/HL BY July 1, 1969 a. vu-n.

APPARATUS FOR- CONTINUOUS FORMING OF STRIP MATERIAL Filed Jan. 31, 1967 fih m1 V will?! m I B ANN Mew \Mm Ql mm a. Q T m m w I m h July 1, 1969 APPARATUS FOR CONTINUOUS FORMING 0F STRIP MATERIAL Sheet 4 of8 Filed Jan. 31, 1967 Q% a a I N VEN TOR. BERN/MR0 V/HL ZZeMZ A ro/m5) July 1, 1969 B. VlHL 3,452,568

.APPARATUS FOR CONTINUOUS FORMING OF STRIP MATERIAL Filed Jan. 31, 1967 I Sheet 5 of s INVENTOR. BER/VHA/PD V/HL /ZMZ 8% A r TOR/V5) B. VIHL July 1, 1969 APPARATUS FOR CONTINUOUS FORMING OF STRIP MATERIQAL Sheet 6 of8 Filed Jan. 31, 1967 INVENTOR. BERNHARD V/HL ATTORNEY B. VIHL July 1, 1969 APPARATUS FOR CONTINUOUS FORMING OF STRIP MATERIAL Sheet L of 8 Filed Jan 31, 1967 INVENTOR, HERA/HARD V/HL July 1, 1969 B. W. 3,452,568

APPARATUS FOR CONTINUOUS FORMING OF STRIP MATERIAL Filed Jan. 31, 1967 Sheet 6 of 8 I N VEN TOR. HERA/HARD V/l-IL /EMA?! A rrak/vsr Patented July 1, 1969 3,452,568 APPARATUS FOR CONTINUOUS FORMING F STRIP MATERIAL Bernhard Vihl, 2 Glenwood St., Clifton, NJ. 07011 Filed Jan. 31, 1967, Ser. No. 612,925 Int. Cl. B21f 35/02; B21b 15/00; B21c 19/00 U.S. Cl. 72-137 Claims ABSTRACT OF THE DISCLOSURE An apparatus having a series of pairs of mated, axially parallel rolls contoured to change progressively the transverse configuration of a continuous strip of material such as a strip of steel passed between mating rolls, and which in each pair of rolls has one roll movable by means of a single adjusting device for variation of the axial spacing of the rolls with this adjusting device providing even and simultaneous shifting of bearings at either end of the axially movable roll. Additionally an apparatus as described having a pair of mated rolls on a mounting variable in both elevation and angular orientation whereby the strip of material fully changed in transverse configuration may be straightened if naturally inclined to be longitudinally curved, or else coiled into a helix of controllable diameter with a given surface of the strip being wound to either the inside or the outside of the helix as desired.

BACKGROUND OF THE INVENTION It is 'knO'Wn in the art of the transverse forming of strip material, especially material such as steel, to pass or drive the material continuously between matingly contoured forming rolls arranged in a series of pairs of axially parallel rolls whereby the transverse configuration of the strip is progressively changed, usually from a flat configuration to some other configuration such as, for example, a 'U-shape. The pairs of rolls, at least some of which may be power driven, are frequently arranged on a common foundation to make a determination overall apparatus for continuous forming of strip material. To give the apparatus a degree of flexibility in handling strip material over a range of thicknesses thereof, as well as to allow the material to be threaded easily through the apparatus initially, it is customary to have one roll of each pair of rolls movable with respect to the other in a manner allowing the distance between their axes of rotation to be either increased or decreased.

So far as the mounting of the forming rolls in known apparatus is concerned, two systems are frequently employed. In one of these systems the shafts of a pair of forming rolls are supported in cantilever fashion in bearings at one end only. The support bearing of one shaft, usually a lower shaft, may be fixedly located with respect to the apparatus foundation while the support bearing of the other shaft, usually an upper shaft, is guidedly movable vertically with respect to the foundation with movement being effected by an adjusting screw. At their other or unsupported ends the shafts carry bearings around which is fitted a yoke with a take-up mechanism such as a clamping screw to hold the free or outboard bearings in spaced relation one to another corresponding to the spacing of the inboard or support bearings. In this system there is at least some possibility of uneven adjustment of the rolls of a given pair of rolls so far as maintaining the axes of these rolls in a state of true parallelism is concerned, with the result of an uneven distribution of pressure between the rolls across the strip material being formed. This is inherent in the fact that separate spacing or clamping adjustments must be made between the bearings at either end of the forming roll shafts. This uneveness can easily be responsible for undesirable irregularities in finish and contour of the formed strip.

In the other frequently employed system of mounting, the shafts of a pair of forming rolls are each supported at both ends in bearings set in the overall apparatus foundation or framework. The bearings of one shaft, usually a lower shaft, may be fixedly located with respect to the apparatus foundation while the bearings of the other shaft, usually an upper shaft, are guidedly movable vertically with respect to the foundation with movement of these bearings being effected by separate adjusting screws. This system, similarly to the cantilever system just described, has inherent in it the possibility of uneven adjustment of the rolls of a pair of rolls so far as their parallelism and the pressure they exert on strip material between them are concerned in view of the separate bearing adjustments.

U.S. Patent No. 1,574,397 to C. W. Kirsch discloses a metal forming machine in which at each forming station there is a yoke and thrust pin means whereby pressure may be exerted upon both bearings of an upper forming roll shaft of the metal forming machine through the turning of a single adjusting screw extending through the yoke and through a plate lying across the top of a pair of side plates in which the forming roll shaft bearings or bearing housings are carried. Kirsch does, however, have some lack of rigidity in his system, actually of an intentional nature, as he provides a sphere-convex rocking surface between the bend of his adjusting bolt and his yoke. Thus Kirsch does not insure an absolutely even pulling or pushing down of his upper forming roll as his single adjusting bolt is turned at any forming station in his apparatus.

It is also known in the art of the transverse forming of strip material to provide an apparatus such as that of the general kind shown by Kirsch with a mechanism or further apparatus assembly at its discharge or exit end whereby the fully transversely formed strip material may be formed or deflected longitudinally to take on the configuration of a coil, that is, in at least some cases, be wound into a helix. The apparatuses for effecting longitudinal forming of strip material associated with those to effect a transverse forming thereof are customarily of a nature to wind or coil the transversely formed strip material in only one direction; that is, supposing the material has been transversely formed into a U-shape, the known apparatus for effecting longitudinal forming of it may be expected to be capable of winding it into a helix only where the open side of the strip is either always concave to the inside of the helix or else always concave to the outside thereof.

3 SUMMARY, OBJECTS, AND DETAILED DESCRIPTION OF THE INVENTION According to the present invention there is provided an apparatus for continuous forming of strip material in which a series of pairs of upper and lower rolls for elfecting transverse forming of strip material are supported in and on a channel-like base or frame. More specifically, the shaft of each of a majority of the lower forming rolls is supported at either side of its roll in bearings set in the side plates of the frame. The bearings of the shaft of each upper forming roll above a lower forming roll of the aforesaid majority are, on the other hand, set in bearing blocks from which guide posts come vertically downwardly through closely and accurately dimensioned and aligned holes in the side plates and base plate of the frame, and are finally joined below the base plate in a single yoke-like plate in the nature of an adjusting plate. These plates, one of which is individually associated with each of the upper forming rolls mentioned above, each have an adjusting screw threaded vertically and centrally through them. At its upper end above its adjusting plate each such screw is shouldered or headed, and rotatably retained in a closely fitting collar on the underside of the base plate of the apparatus frame. At its lower end below its adjusting plate each such screw is provided with a head or other means whereto a turning device such as a wrench may be applied for raising or lowering the adjusting plate and the guide rods, bearing blocks, bearings, shaft, and upper forming roll mounted on it in what is effectively a single very rigid and very accurately aligned and guided assembly or sub-assembly.

Further this invention provides form rolls in a series of mated pairs of upper and lower rolls in each of which the individual rolls are so contoured that strip material passing between them will be formed transversely in essentially pure bending and not stretched or thinned, that is, not subjected to rolling in the usual mechano-metallurgical sense of the word. More specifically, all of the lower forming rolls at the stations where significant amounts of transverse deflection or bending of the strip material is effected are provided with step-like shoulder portions at their outer ends which arrest the downward movement or adjustment of the corresponding upper forming rolls before the strip shaping opening or cavity between the rolls of any given pair of forming rolls can be closed up. Desirably, the raised height of the shoulder portions is essentially equal to the thickness of the strip material which is to be formed while the transverse length of the limiting cavity between any mated pair of upper and lower forming rolls, measured sinuously right along the cavity contour, is essentially equal to the original width of the strip material as a fiat strip.

Still further this invention provides an apparatus for continuous forming of strip material which includes an apparatus assembly forforming or bending the material longitudinally into a coil or helix after the material has been fully formed transversely, this assembly being adjustable to generate a helix in which a given original surface of the strip material is wound either to the inside or the outside of the helix, as desired. In this assembly there are upper and lower rolls having contours respectively the same as those of the upper and lower rolls of the last pair of rolls for effecting transverse forming. The longitudinal forming or bending rolls have a common, vertically adjustable mounting which allows them to be moved as a pair to be either somewhat higher or somewhat lower than, or indeed at essentially just the same height as the last pair of transverse forming rolls. Additionally, the upper longitudinal bending roll is mounted on swing arms rotatable with respect to the axis of the lower longitudinal bending roll, and thus may be swung relatively nearer to or further away from the last upper transverse forming or bending roll depending on which way the helix of transversely formed strip material is desired o be wo nd. The upper longit d n l endi g roll i 4 controllably movable along the swing arms so that the spacing bet-ween its axis and that of the lower longitudinal bending roll may be adjusted in keeping with the thickness of the strip material being run through the apparatus and any pertinent considerations of the direction and radius of the longitudinal bend being made.

It is thus an object of the present invention to provide, and it does provide, an apparatus for continuous forming of strip material in which there is a unique and highly accurate and evenly working single-adjustment means and system for controlling the spacing and pressure between the rolls of a mated pair of transverse forming rolls.

It is thus another object of the present invention to provide, and it does provide, an apparatus for continuous forming of strip material in which the rolls of mated pairs of transverse forming rolls are configured to effect forming of appropriately originally sized material in essentially only a bending mode.

It is thus another object of the present invention to provide, and it does provide, an apparatus for continuous forming of strip material in which there is a unique and easily adjustable means for bending transversely formed strip material longitudinally and coiling it helically to have a given one of its original surfaces wound facing either into or away from the helix according to the chosen adjustment of this means.

These and other objects and advantages of the present invention as well as its nature and substance will be more clearly perceived and fully understood by referring to the following description and claims taken in connection with the accompanying drawings in which:

FIG. 1 represents an isometric view showing the general arrangement of the apparatus and wherein the strip stock is shown being fed from a supply reel;

FIG. 2 represents a plan view of the apparatus of FIG. 1 with its cover removed looking downwardly in the direction of the arrows of line 22 in FIG. 3, and showing the arrangement of the strip forming pathway and the means for driving the rolls and certain pairs of rolls forming this pathway;

FIG. 3 represents a side elevation view of the apparatus of FIG. 2 showing the general arrangement of the components of the strip forming apparatus of the present invention;

FIG. 4 represents a longitudinal sectional view taken on line 4-4 in FIG. 2 looking in the direction of the arrows, and showing the path of the strip of stock through the pairs of forming roll stations and through the general arrangement of the rolls leading into and out of the path of the forming apparatus;

FIG. 5 represents a transverse sectional view in enlarged scale of a portion of the forming section of the apparatus of this invention taken on the line 5-5 in FIG. 2 looking in the direction of the arrows;

FIG. 6 represents a transverse sectional view in enlarged scale of another portion of the forming section of the inventive apparatus upstream from the section of FIG. 5 taken on the line 6-6 in FIG. 4 looking in the direction of the arrows;

FIG. 7A through FIG. 76 represent a sequence of somewhat diagramatic sectional views through each of the successive pairs of rolls forming the guiding and bending stages of the apparatus of this invention;

FIG. 8 represents an exploded isometric view showing a typical arrangement of components including and associated with one intermediate pair of rolls forming one stage of the strip contouring apparatus;

FIG. 9 represents an exploded isometric view showing the relative arrangement of the components comprising the upper portion of the strip curving apparatus of FIG. 10;

FIG. 10 represents a side view in slightly enlarged scale of the discharge end of the apparatus of FIG. 2 showing the adjustable apparatus providing means for longitudinally curving or straightening the strip of material after it is formed;

FIG. 11 represents a plan view partly in section of an alternate longitudinal strip curving means taken along line 1111 in FIG. 13 looking in the direction of the arrows;

FIG. 12 represents a front view of the alternate longitudinal strip curving means of FIGS. 11 and 13 taken along line 1212 in FIG. 13 looking in the direction of the arrows, and

FIG. 13 represents a side view of the alternate adjustable means of FIGS. 11 and 12 for longitudinally curving, or straightening, formed strip material leaving the discharge end of the apparatus shown in FIG. 2.

Referring now to the drawings in detail in which like numbers designate like members throughout the several figures, it is to be noted that the apparatus of FIG. 1 includes a general base within which is mounted a gear motor 22 whose shaft carries a drive sprocket 23 which is connected by a roller chain 24 extending up wardly to a driven sprocket 25. This driven sprocket is carried on and rotates a drive shaft 27 through which the entire forming operation is powered. A reel 28 supported and rotatably retained by stand 29 carries a coil of flat strip material 30 to be formed. This material may, according to an actual utilization of the present invention, preferably be a strip of stainless steel about five and oneeighth inches wide and about one-eighth of an inch thick or nominally eleven or ten gauge. From this coil of material 30 an unwound strip 32 is fed to and through a forming station which is normally protected by a cover 34 to prevent dirt from entering the apparatus and marring the material and also to act as a safety guard for the rotating mechanism therein and the power driving apparatus which in the illustrated apparatus is on the outer end of the forming roll shafts and is described hereinafter. The discharge portion of the apparatus has a strip deflecting assembly 35 which is adjustable to provide the final longitudinal alignment or coiled arrangement of the formed or contoured strip 36.

Referring next to FIGS. 2, 3, and 4 it is to be noted that unwound strip 32 after leaving coil 30 is first brought to and through a guide roll section 40 which includes a frame 41 carrying upper and lower straight or constant diameter rolls 42 and 43 and having a pair of freely rotatable lateral guide rolls 45 and 46 on each side of the frame so as to define the side-to-side position of the path of the strip. Frame 41 carries rolls 42 and 43 in a fixed and precisely determined position so as to define the entry of a selected pathway for the strip material 32. This pathway is above and generally parallel to a base plate 48 which extends the length of the apparatus and is mounted upon or carried by a channel iron frame 49 forming the upper portion of the general base 20. Adjacent to and downstream from guide roll section 40 is a preliminary or first contouring or forming or forming roll section 50 which includes a frame 51 carrying lateral guide rolls 52 and 53 and an upper roll 54 and a lower roll 55 both fixedly positioned and precisely located and freely rotatable in bearings mounted in the side plate portions of frame 51. Upper roll 54 has a convex arcuate center portion while lower roll 55 has a mating concave arcuate center portion. These rolls are spaced apart an amount equal to the thickness of the strip material so as to permit the strip 32 to pass between them and have a preliminary bend formed in its central portion according to their mated contours.

A precise positioning of the pair of rolls 54 and 55 in relation to rolls 42 and 43 and base plate 48 generally defines the preferred plane of the path of travel of strip 32 as it is being contoured. Next downstream and to the left of the first contouring section 50 is a powered contouring or forming section 56 having at its inlet end a set of lateral guide rolls 57 and 58. These guide rolls are precisely spaced to accommodate the now slightly reduced width of the partially curved strip 32 as it is brought from the preliminary or non-powered forming section 50 into the powered forming section 56. Within and constituting part of powered forming section 56 of the apparatus there are attached to and supported upon base plate 48 a pair of lower side plates 60 and 61 which extend the full length of the powered forming section. Carried in these lower plates are five fixedly spaced lower rolls having concave center portions of precise contour. These rolls are hereinafter designated as lower female rolls 62, 63, 64, 65, and 66-. correspondingly mounted above these lower rolls are matingly contoured upper male rolls 68, 69, 70, 71, and 72, each of which is carried on a shaft whose ends are mounted in bearings set in vertically movable blocks. These upper rolls are maintained in precise alignment and parallelism with mating lower rolls 62 through 66 in a manner described hereinafter. Between each of the lower rolls and acting as a spacer and support means for the side plates 60 and 61 are transverse bracing blocks 74.

Particularly clearly shown in FIG. 4 are five substantially equally spaced adjusting screws 76 which have their upper ends formed with round, flat-headed shoulder portions of enlarged diameter and which are rotatable against the undersurface of base plate 48. The lower end of each screw 76 has a square head for application of a wrench or other turning device. Threadedly engaging and carried on each adjusting screw 76 is a plate 77 and below these plates on each screw there is a lock nut 78. The upper end of each adjusting screw 76 is rotatably retained against base plate 48 by means of a collar 80 which is attached to plate 48 by cap screws or other conventional means not shown.

Referring next to FIG. 5, a typical transverse bracing block 74 between side plates 60 and 61 is formed with a concave upper central portion 81 sized to allow the free passage thereabove of the contoured strip 32. The strip as it is advanced is depressed and shaped in its upper surface by upper roll 70 and is shaped and supported on its lower surface by lower roll 64. Maintenance of strip 32 in a proper side-to-side position within the confines of the formation path is effected by lateral guide means in the form of idler rolls 82 and 83 mounted on block 74. These rolls are sized and positioned so as to just permit the passage between them of the edges of the strip 32.

Referring next to FIG. 6 in which a sectional view is taken through the forming rolls of one station typical of the apparatus, it is to be noted that the shaft of the upper forming roll 70 is carried in roller bearings 84 set in suitable bearing blocks. The shaft of the mating lower roll 64 is carried in like roller bearings 85 set in side plates 60 and 61. The outwardly extending portions of the forming roll shafts beyond side plate 61 each carry a shaft nut 86 for transverse retention. Also seen are base plate 48, adjusting screw 76, collar 80, and plate 77 which carries guide posts hereinafter identified and described in detail.

Referring next to FIGS. 7A through 76, the first view, FIG. 7A, represents the relationship of the straight, non-powered rolls 42 and 43 to the passage therebetween of the fiat strip 32. FIG. 7B shows the first forming station at which the initial partial troughing or bending of the strip is performed between upper roll 54 and lower roll 55. The subsequent views, those of FIGS. 70 through 7G, show further progressive forming of strip 32 until it achieves its final transverse flanged and trough-like configuration in its passage between rolls 72 and 66. From and including FIG. 7C onward it is to be noted that the lower roll of each pair of forming rolls is provided with step-like shoulder portions at its outer ends with the mating upper roll running essentially in contact with these portions and the strip 32 being confined laterally between them. This shouldered configuration of the lower forming rolls not only provides positive side-to-side guidance of the strip of material 32 being formed, but also prevents an unwanted reduction in thickness of the strip on account of the vertically movable upper forming rolls being lowered too far. Opposite shoulder faces on succeeding lower rolls 62 through 66 are progressively closer together in conformity with the deepening of the transverse troughing of the strip material as it passes from one pair of forming rolls to another.

A final pair of rolls downstream from rolls 72 and 66 are movably arranged to provide a determined straightness or a longitudinal curvature to the strip material after it is finally formed transversely and in such condition identified as contour strip 36. These rolls are a mated pair in which the upper roll and the lower roll have the same convex and concave configuration respectively as forming rolls 72 and 66. The use of these rolls is described more fully hereinafter in connection with the description of apparatus shown in FIGS. 9 and 10.

Referring next to FIG. 8, this exploded isometric view illustrates a transverse forming station of the apparatus which except for the precise configuration of the forming rolls is quite typical of all such stations powered by motor 22. Chosen for illustration and description is the station including upper forming roll 72 and lower forming roll 66. Lower roll 66 and its shaft are carried in roller bearings 85 which are precisely located in bored holes 87 in side plates 60 and 61. Immediately above the illustrated portions of the side plates there are vertically movable bearing blocks 88 and 89 which are characterized by bores 90 sized so as to retain roller bearings 84 for the support of upper forming roll 72 and its shaft. The ends of the forming roll shafts are threaded to accept retaining nuts 86. After assembly, portions of these shafts may extend outwardly beyond one or both of side plates 60 and 61 to accept drive means described hereinafter.

Each of the bearing blocks 88 and 89 is precisely bored with vertical holes 91 extending therethrough. These holes are sized and shouldered to accept guide posts 92. Each guide post 92 is formed with a major diameter central portion 92a and a reduced diameter upper portion 92b having a threaded end. Extending downwardly from central portion 92a there is a reduced diameter lower portion 926 terminating in a threaded end. Adapted to engage the threaded end 92c is a hex nut 93 and adapted to engage the threaded end 92b is a hex socket type nut 94. In the assembly, as shown particularly in FIG. 5, each of the two guide rods 92 associated with each bearing block enters the bottom of a bore 95 formed in one of the side plates, side plate 60 below block 88 and side plate 61 below block 89. On each rod 92 the shoulder formed at the base of reduced diameter upper portion 92b engages a like shoulder formed in bearing block bore 91 with the threaded end of this upper portion extending upwardly into an enlarged upper end region of bore 91. Nut 94 enters into the enlarged upper end region of bore 91 and is engaged and tightened on guide rod 92 so that the shoulder at the base of portion 92b of this rod is pulled up hard against the lower shoulder of bore 91. The unthreaded portions of guide rods 92 which enter bearing block bores 91 are very precisely fitted within these bores.

Blocks 88 and 89 are preferably made with a high degree of accuracy so that at least the under or lower shoulders in bores 91 are all the exact same distance within a few tenths of a thousandth of an inch below the theoretical center line forming the axis of the upper roll 72, that is, below the center or axial lines of bores 90 extending transversely. Corresponding accuracy in the shoulder-toshoulder distances of major diameter central portions 92a on the guide rods insures that plate 77, which may be called a header or adjusting plate, is in a plane parallel to the axis of the movable upper forming roll. The high degree of accuracy of dimensions of the rods and blocks, as achieved in an actual reduction to practise of this invention, is for a purpose hereinafter described. The major diameter portions 92a of the guide rods have snugly slinding fits in precisely spaced and bored holes 95 formed in side plates 60 and 61, and these portions 92a extend all the way through the side plates and through appropriately located clearance holes 96 in base plate 48. The lower shoulders on the guide rods defined at the reductions of portions 921: to portions 920 seat upon the upper surface of adjusting plate 77, and the rod portions 92c pass down through and extend beyond closely fitting and accurately located holes 97 in the adjusting plate. The guide rods are attached and tightened onto plate 77 by means of nuts 93 below the plate. After assembly, the adjusting or rotating of screw 76 Within collar causes plate 77 to be moved up and down in response to the engagement of the screws thread in the tapped hole 98 in the plate through which it passes, and in keeping with their rigid fixation to plate 77 the rods 92 and bearing blocks 88 and 89 mounted on the guide rods are also moved up and down in precise response to rotation of screw 76. Bearings 84 and upper forming roll 72 of course move vertically with the bearing blocks. Vertical adjustment of this whole assembly may befixed by means of lock nut 78 on screw 76.

Referring next to FIGS. 9 and 10 there is shown one embodiment of the last or farthest downstream roll pair or station of the apparatus, the embodiment 35 depicted in FIG. 1, which station provides a means for final longitudinal shaping of the transversely formed strip 36. Adjustment of the rolls of this station determines whether the formed strip is straight or curved and these rolls may be adjusted in particular so as to insure that the flange edges of the strip formed as shown will be straight or else curved as required to lie against a tank wall around or within which the strip is wrapped before welding of its edges thereto. This final roll station section for strip curving or straightening includes an upper convex roll 100 which is identical in contour and size to roll 72 but differs therefrom with respect to mounting in that this roll is freely rotatable on a shaft 102 by means of bearings 103 carried within the roll itself. Lower concave roll 104 is identical in configuration and shape to roll 66 except that this roll likewise is freely rotatable-upon shaft 105 on internally carried bearings 106.

A support yoke 108 is made with side and bottom plates, and is assembled by screws or as a weldrnent without screws. This support yoke is provided with transversely aligned holes 109 adapted to engage and retain the end portions of shaft 105. Each end of this shaft extends beyond the corresponding side plate portion of yoke 108, and each such end extension is adapted to pivotally retain a swing arm 110 near the lower end of the arm. Arms 110 are a pair and are symmetrically shaped although oppositely disposed with their thickened upper end portions oriented inwardly toward each other to provide adequate substance or material for mounting an adjusting screw 111 in each of them. These screws are threadedly retained in tapped holes 112 in the arms 110, and extend through and below these holes to enter vertically elongated holes or slots 114 in the swing arms within which the ends of shaft 102 are slidably retained.

In the end portions of shaft 102 there are transverse or diametral holes 115 which receive the circumferentially grooved lower ends of adusting screws 111 with a fit allowing rotation of these screws. Screws 111 are advanced in tapped holes 112 so that their grooved ends enter holes 115, and then set screws 116 are engaged and advanced into tapped holes 17 formed in each end of shaft 102, holes 17 communicating with holes 115. When the grooves in screws 111 are in way of holes 117 the screws 116 are run in to enter these grooves and rotatably retain screws 111 in shaft 102. As screws 111 are rotated in tapped holes 112 the shaft 102 and upper roll 100 upon it are moved back and forth or up and down in swing arm slots 14. Lock nuts 118 are used to retain fixed adjustments of screws 111.

Swing arms 110 are retained against outward movement on the ends of lower roll shaft 105 by means of washers 119 and cap screws 120 which are threaded into tapped holes 121 in the ends of the shaft. Swinging adjustment of upper roll 100 in a pivotal movement of arms 110 around the axis of lower roll shaft 105 is accomplished by synchronized and even rotation of two knurlheaded adjusting screws 123. Pivot blocks 124, mounted as described hereinafter, rotatably retain the shanks of screws 123 and are maintained in a fixed longitudinal relationship thereto by retaining rings 125 seated in grooves formed in the screws on either side of each block. Threaded pivot blocks 127 are rotatably mounted in holes 128 in each of swing arms 110, and are retained therein by means of snap rings 129 set in circumferential grooves in the shank portions of the blocks. In like manner, pivot blocks 124 are rotatably mounted in holes 130 formed in the side plate portions of yoke 108, and retained therein by means of snap rings 131.

Extending downwardly from support yoke 1-08 is a sleeve or tubular member 132 which is bolted or otherwise suitably attached to the yoke. Within this sleeve there is disposed an adjusting screw 134 which is maintained in an axially fixed but freely rotatable relationship to the bot tom plate of yoke 108 by means of an enlarged fiat round head on the screw within a collar 135 on the underside of the yoke. A support bracket 140 is attached to general base 20; and has a vertical tubular portion 141 centrally disposed in it. The inner surface of this portion serves as a retaining and bearing surface for tubular member or sleeve 132 of yoke 108 to be axially movable therein. The bottom of tubular portion 141 of support bracket 140 is closed by an end plate 142 having a centrally located tapped hole through which adjusting screw 134 passes in threadedly engaged relationship. Sleeve 132 is prevented from rotating within tubular portion 141, and hence rotation of support yoke 108 is prevented, by means of a threaded pin 143 which is retained in a tapped radial hole in tubular portion 141 and extends inwardly to enter and have a close sliding fit in a vertical slot 144 in sleeve 132. As adjusting screw 134 is rotated, therefore, sleeve 132 and support yoke 108 may be moved up and down without any turning. Screw 134 may be rotated by any suitable means such as a ratchet-type socket wrench shown in phantom outline.

Referring finally to FIGS. 11, 12, and 13 there is shown an alternate embodiment or assembly 149 of a means for final longitudinal shaping or deflection of the transversely formed strip 36. As in FIGS. 9 and 10, an upper roll 100 is freely rotatable in swing arms 150 which are similar to arms 110 described above except that each arm 150 has a portion extending below its pivot hole whereat it is mounted on an end extension of the shaft of lower roll 104. Arms 150 have slots 151 in their upper portions which are identical in size and use to slots 114. Adjusting screws 111 are threadedly carried in the upper ends of arms 150 and move upper roll shaft 102 as previously described. Lower roll 104 is freely rotatably mounted on shaft 105 whose ends extend through the sides of support yoke 152 and are carried in holes 154 therein. Support yoke 152 is similar to support yoke 108 with the exception that pivot holes 130 of yoke 108 are now holes 155 and holes 109 of yoke 108 are holes 154 in yoke 152. The extended end portions of lower roll shaft 105, as aforesaid, pivotally carry swing arms 150 as they pass through holes 156 in these arms.

A rigid arm or frame member 157 in the form of a U has side members 158 connected by a transverse bar 159 as by welding. Above this bar a beam or rod 160 is rotatably mounted between the outer ends of the side members by pivot screws 161. The free or inwardly extending ends of the sides 158 have aligned holes 162 in their ends. Shouldered cap screws 163 pass through these holes in free, rotatable fashion, and the threaded inner ends of screws 163 are in screwed engagement with tapped holes in arms 1'50 close to the lower ends of these arms. The body portions of the cap screws serve to retain the sides 158 of frame member 157 in pivoted relationship to swing arms 150. A rod or bar 165 is pivotally carried between the side plates of support yoke 152 by shouldered cap screws 164 in aligned holes in these plates near the front thereof at about the normal level of screws 163. An adjusting screw 166 is carried centrally and rotatably in bar 165. The screw 166 is retained at its inner end against axial movement in bar 165 by means of snap rings 168, and is threadedly engaged in rod or beam 160. On its outer end there is attached a screw rotating means in the form of a crank 170.

Rotation of screw 166 by crank 170 causes beam 160 to be moved forwardly and backwardly moving frame structure 157 along with it, and as this frame is moved it moves the lower ends of swing arms 150 to rotate these arms on shaft 105 and shift upper roll 100 backwardly and forwardly. The single manipulative control effected by the rotation of crank 170 permits ready adjustment to control the longitudinal configuration of the transversely formed strip 36. This is in contrast to the dual adjustment required for the apparatus of FIGS. 9 and 10 in which the two adjusting screws 123 must be manipulated separately but in substantial synchronism. Yoke 152 is mounted upon a tubular member 171 which fits and is movable only vertically within tubular portion 141 of support bracket 140 just as in the case of the apparatus of FIGS. 9 and 10. Similarly, likewise, yoke 152 and the mechanism it carries may be raised and lowered by rotation of adjusting screw 134 turning in a threaded hole in end plate 142 of tubular portion 141.

DRIVE OF THE APPARATUS Referring again in particular to FIGS. 1, 2, and 3 it is to be noted that rotational drive from motor 22 is applied to the lower rolls of the pairs of forming rolls carried in and on side plates 60 and 61, and from these lower rolls only to upper rolls 71 and 72. The pairs of rolls being affected by the drive motor are identified as 62-68, 6369, 6470, 65-71, and 66-72. As seen in FIGS. 1 and 2, a portion of drive shaft 27 carrying lower roll 65 extends appreciably beyond side plate 60 and is rotated by means of motor '22 as the motor drives sprocket 23 on its own shaft, chain 24, and sprocket 25 fixedly mounted on the shaft 27 as the outermost of three sprockets on this shaft. The outboard end of shaft 27 beyond sprocket 25 is carried in pillow block bearing 172 mounted on and supported by the upper frame 49. Rotational drive is transmitted from the extended portion of shaft 27 by means of roller chains and sprocket in a manner described hereinafter.

On shaft 27 is mounted an intermediate or middle sprocket 174 around which a roller chain 175 passes and further passes around an outer sprocket 176 attached to an extended portion of shaft 177 of lower roll 64. Also mounted on the aforementioned extended portion of drive shaft 27 is an innermost drive sprocket 178 around which a roller chain 179 passes. This chain, driven by sprocket 178, in turn drives a sprocket 180 mounted upon an extended portion of shaft 181 of lower roll 66. Adjacent sprocket 176 and also carried on the extended portion of shaft 177 of lower roll 64 is an inner drive sprocket 183 around which a roller chain 184 passes. This chain, driven by sprocket 183, in turn drives an inner sprocket 185 mounted upon an extended portion of shaft 186 of lower roll 63. Mounted farther out on this shaft portion is an outer drive sprocket 188 around which a roller chain 189 passes. This chain, driven by sprocket 188, in turn drives a sprocket 190 mounted upon an extended portion of shaft 191 of lower roll 62.

Referring particularly to FIGS. 2 and 3 it is to be noted that on the near side of the apparatus as seen in FIG. 3 there is provided on an extended portion of drive shaft 27 a spur gear 193 which in turn is meshed with a like spur gear 194 fixedly mounted upon an extended portion of shaft 195 of upper roll 71. In like manner a spur gear 196 identical to spur gear 193 is mounted on the near extended portion of shaft 181 of lower roll 66, and drives a like spur gear 197 fixedly mounted upon an extended portion of shaft 198 of upper roll 72. Spur gears 193, 194, 196, and 197, as exemplified, all have the same pitch and diameter. No power drive is applied to either of rolls 100 and 104 of strip coiling assembly just as none is applied to either of constant diameter rolls 42 and 43 nor to either of the first pair of forming rolls 54 and 55.

USE AND OPERATION In the use of the afore-described apparatus, the strip of material 32 fed from coil 30 may, as aforesaid, be of stainless steel approximately one-eighth of an inch thick and five and one-eighth inches wide, and it is brought initially from the coil through the pair of constant diameter rolls 42 and 43 which establish the plane of operation. These rolls perform no other function than insuring that the strip as it is fed from the coil is brought into this plane in the elevation sense, and lateral guide rolls 45 and 46 insure that the strip is brought into proper side-to-side coincidence or alignment with its prescribed path of travel through the apparatus. From the set of constant diameter or flat rolls 42 and 43 the strip is brought into the first pair of forming or bending rolls 54 and 55. These rolls are provided to start a transverse bend in the strip or stock as shown in FIG. 7B, and insure that the bend is commenced in the correct direction and that the strip is in the determined pathway plane.

At this point, that is, after leaving rolls 54 and 55, the strip has been reduced in plane width by perhaps as much as one-eighth of an inch, and is held in precise sideto-side alignment by lateral guide rolls 57 and 58 in preparation for moving to enter between another pair or set of forming rolls. Upon entering the next pair of forming rolls 62 and 68, strip 32 is urged forwardly by lower roll 62 which is power driven while upper roll 68 according to the adjustment of screw 76 directly below it insures that the central transverse portion of the strip is urged further downwardly as shown in FIG. 7C, and at the same time the sides or edge portions of the strip are maintained in the predetermined plane. It is to be noted that rolls 62 and 68 are precisely shaped with the strip forming contour or cavity between these rolls sized so that as the strip is subjected to its next operation in being formed into its final flanged, trough-like shape in its passage between rolls 62 and 68 it is not reduced in thickness but instead is formed only in a transverse bending mode.

The emerging strip is guided in the side-to-side sense by the pair of lateral guide rolls similar to rolls 57 and 58 next downstream which are precisely spaced to accommodate the somewhat further reduced plane width of the partly transversely formed strip. Continuing onward, the strip enters between the next pair of forming rolls 63 and 69 wherein a further downward bending of its central transverse portion is effected as shown in FIG. 7D, and an attendant slight but determinate drawing together of its edge portions. Again, and indeed throughout the whole forming or transverse bending operation, there is no thinning of the strip 32; that is, there is no rolling of it in the customary use of the expression. This is prevented, while all desired bending is achieved, by the shouldered configuration of the lower, power driven forming rolls such as roll 63 taken together with the very rigid and precisely adjustable means and method for rotatably supporting and vertically moving the upper forming rolls such as roll 69, as described particularly in connection with FIG. 8.

The high degree of accuracy of the dimensions of the various components of the support means for upper forming roll 69 insures not only that precise adjustments may be made to the vertical position of this roll taken as a whole, but also that its axis of rotation may and indeed will be held accurately parallel to that of lower roll 63 so that the two rolls will exert essentially equal pressures on strip 32 from one edge portion thereof to the other; that is, so that there will be no undue pinching of either edge portion of the strip between the rolls. Additionally, undue pinching of one edge portion or the other is prevented by the inventive feature of having only a single adjustment, namely, the turning of a single, directly acting screw 76, whereby the bearing blocks at both ends of the shaft on which upper roll 69 is carried may be either raised or lowered simultaneously.

Another feature contributing to the precise management the transverse forming and linear forwarding of strip 32 are the pairs of lateral guide rolls such as 57, 58 and 82, 83. The rolls of successive pairs are set closer and closer together, as may be seen generally in FIG. 2, to maintain accurate side-to-side alignment of the strip in its prescribed forming and forwarding pathway as the plane width of the strip decreases with deeper and deeper bending as the strip passes from one pair of forming rolls to the next. Of course the shoulders on lower forming rolls 62, 63, 64, 65, and 66 also exert significant lateral guidance and control on moving strip 32. The lateral guide roll pairs located between the pairs of forming rolls serve in their turn the additional purpose of keeping the transversely bent strip leaving any pair of forming rolls from spreading out or springing back elastically, and thus make for a relatively easy entry of the strip into the shaping or bending cavity defined between the rolls of the next pair of forming rolls downstream.

After leaving the pair of lateral guide rolls next downstream from forming rolls 63 and 69, the partly formed strip 32 passes between rolls 64 and 70 of the next forming roll pair, and is further shaped in transverse bending by these rolls. As with prior pairs of rolls the space or cavity between rolls 64 and 70 is precisely sized so as to cause the strip to bend without being stretched or thinned. Upon leaving rolls 64 and 70 the partly formed strip may have a plane width of about four and onequarter inches, and after passing between a pair of lateral guide rolls it enters the bending cavity defined between forming rolls 65 and 71. At this stage, strip 32 is approaching its final shape so far as transverse bending is concerned, and it is desirable that no work hardening be induced in it by the dragging of upper roll 71 as the strip or stock runs over the lower roll. For this reason, and for the reason of making sure that there is a fully positive drive on the strip to draw or thrust it through the whole, apparatus, both lower roll 65 and upper roll 71 are power driven. Upon leaving rolls 65 and 71 the nearly completely transversely formed strip 32 may have a plane width of about four inches.

The strip passes next between a pair of lateral guide rolls mounted on the last of the transverse bracing blocks 74, and enters the shaping passage defined between forming rolls 66 and 72. Both of these rolls are power driven, and strip 32 is bent to its final flanged, trough-like transverse configuration by this pair of rolls. In this configuration it may have a plane width of about three and seven-eighths inches, and the exit point lateral guide rolls 199 and 200 insure that the strip is maintained in proper side-to-side alignment and not allowed to spread open from any residual elasticity as it enters between rolls and 104 of strip deflecting assembly or longitudinal curving or coiling assembly 35 which, as pointed out hereinbefore, have contours and sizes identical to those of forming rolls 72 and 66 respectively. The variable nature of the material being fed from coil 30 and the operations performed upon it in bending it transversely usually result in a formed strip having a tendency to assume some curved or coiled longitudinal configuration. Therefore rolls 100 and 104 are adjusted to straighten the strip longitudinally, if that be what is desired, or else to impart a predetermined or controlled longitudinal curvature to it which may be significantly different from the one which it would assume naturally.

Strip material formed to the transverse shape shown in FIG. 76, namely, a flanged, trough-like cross section, may

find significant use as a wrapping or lining to be wound around or fitted within and welded to either the exterior or the interior surface of a generally cylindrical vessel, and define thereon a conduit for carrying fluids for either heating or cooling the contents of the vessel. When the transversely formed strip material is to be coiled to become a wrapping to be fitted to the exterior surface of a vessel or tank; that is, when the strip is to be coiled so that its trough-like configuration is open or concave inwardly, adjusting screw 134 is manipulated to cause the support yoke 108 in strip deflecting assembly 35 or support yoke 152 in strip deflecting assembly 149 to be moved upwardly and bring the axis of lower deflecting roll 104 at least somewhat above the axis of the last lower forming roll 66. At the same time the upper deflecting roll 100 is swung to the right, as seen in FIGS. and 13, toward the last upper forming roll 72 through manipulation of adjusting screws 123 or crank 170 whereby swing arms 110 or 150 are rotated clockwise. Adjusting screws 111 are set to give the appropriate spacing between the parallel axes of rolls 100 and 104, essentially the same as that between the parallel axes of the rolls 72 and 66.

A little experimentation in any particular case will determine the proper vertical adjustment of the support yoke and the proper angular orientation of the swing arms to impart the desired curvature to transversely and longitudinally contoured strip 36 shown leaving deflecting assembly 35 in FIG. 1 with its trough-like configuration concave inwardly. Continued operation of the apparatus of FIG. 1 with the indicated settings of adjusting screws 123 and 134 thereof will cause the finished strip 36 to be coiled into a helix. Desirably there will be a bar or rod or other support means located above the apparatus at its .discharge end and running transversely to the strip forming pathway through the apparatus, this means acting to support the helix of finished strip 36 as the same is generated,

and allowing easy transfer of it onto a tank or other vessel to which it is to be finish fitted and welded after it has been cut off to the desired length. Great flexibility together with precision of adjustment is possible in setting the inside diameter of the helix of strip 36 to give it any desired degree of tightness of fit upon a given tank or vessel prior to being welded or otherwise attached thereto.

When the transversely formed strip material is to be coiled to become a lining to be fitted to the interior surface of a vessel or tank; that is, when the strip is to be coiled so that its trough-like configuration is open or concave outwardly, adjusting screw 134 is manipulated to cause the support yoke 108 in strip deflecting assembly 35 or support yoke 152 in strip deflecting assembly 149 to be moved downwardly and bring the axis of lower deflecting roll 104 at least somewhat below the axis of the last lower forming roll 66. At the same time the upper deflecting roll 100 is swung to the left, as seen in FIGS. 10 and 13, away from the last upper forming roll 72 through manipulation of adjusting screws 123 or crank 170 whereby swing arms 110 or 150 are rotated counterclockwise. Adjusting screws 111 are set to give the appropriate spacing between the axes of rolls 100 and 104, essentially the same as that between the parallel axes of rolls 72 and 66.

A little experimentation in any particular case will de termine the proper vertical adjustment of the suppork yoke and the proper angular orientation of the swing arms to impart the desired curvature to transversely and longitudinally contoured strip 36, a curvature opposite to that of strip 36 leaving deflecting assembly 35 in FIG. 1 in that the open or concave side of the strip is now directed outwardly rather than inwardly. Continued operation of the apparatus of FIG. 1 with the settings of adjusting screws 123 and 134 as described will cause the finished strip 36 to be coiled into a helix. Desirably there will be a bar or rod or other support means located beyond the apparatus at its discharge end at about the level of that end and running transversely to the strip forming pathway through the apparatus, this means acting to support the helix of finished strip 36 as the same is generated, and allowing easy transfer of it into a tank or other vessel to which it is to be finish fitted and welded after it has been cut off to the desired length. The outside diameter of the helix may be set with precision to give it any desired degree of tightness of fit within a given tank or vessel prior to being welded or otherwise attached thereto.

Where the axis of lower deflecting roll 104 is just at the same height as that of last lower forming roll 66 and swing arms or are oriented truly vertically so that upper deflecting roll 100 is directly above roll 104, it may be expected that strip 36 leaving rolls 100 and 104 will tend to assume some natural longitudinal curvature, one way or the other, because of the previous work history of the strip material. The support yoke may be raised or lowered and the swing arms rotated clockwise or counterclockwise as necessary to remove the natural curvature of the strip. Thus, deflecting or coiling assemblies 35- and 149 may be used as straightening mechanisms when it is,

desired to produce straight runs of finished strip material 36 for attachment to a flat sheet or panel such as the side of a rectangular heating or cooling tank, for example.

CONCLUSION As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, the embodiment herein pictured and described in detail is therefore illustrative and not restrictive, and since the scope of the invention is defined by the claims hereinafter set forth, all variations, modifications, and changes that fall within the metes and bounds of the claims or that form their functional as well as conjointly cooperative equivalents are therefore intended to be embraced by these claims.

Thus, protection by Letters Patent of this invention in all its aspects as the same are set forth in the appended claims is sough to the broadest extent that the prior art allows.

I claim as my invention:

1. In an apparatus for continuous forming of strip material having a base and at least one pair of mating, axially parallel transverse forming rolls rotatably mounted in and on said base with one roll of said pair of rolls being further movably mounted in a manner allowing adjustment of the spacing between the axes of these rolls, the improvement which comprises a yoke-like support and adjusting system for said one roll including (1) a hearing at either end of said one roll wherein this roll is rotatably carried, (2) blocks movable with respect to said base wherein said bearings are set, (3) at least one guide post extending from each of said bearing blocks past the other roll of said pair of rolls and slidably guided in said base and extending beyond said base, (4) an adjusting plate joining said guide posts in their extensions beyond said base, and (5) means operative between said adjusting plate and said base whereby said plate, said guide posts, said bearing blocks, said bearings, and said one roll all may be moved with respect to said base and said other roll to controllably change the axial spacing between said one roll and said other roll.

2. The improvement according to claim 1, there being a plurality of guide posts extending from each of said bearing blocks.

3. The improvement according to claim 1, said base being of a channel-like configuration having side plates and a base plate; said other roll being mounted in bearings set in said side plates, and said bearing blocks for the bearings of said one roll being disposed beyond said side plates with said guide posts extending through and being slidably guided in said side plates and said base plate.

4. The improvement according to claim 1 in which said means operative between said adjusting plate and said base is a single screw means.

5. The improvement according to claim 1 in which at least one of the rolls of said pair of rolls is provided with step-like shoulder portions at its ends to bear upon the other roll of said pair and limit the axial approach of the two rolls one to another and thus always maintain at least some opening between them.

6. In an apparatus for continuous forming of strip material wherein such material is initially formed transversely by being passed between the rolls of at least one pair of mating, axially parallel rolls and which apparatus has an assembly for forming the strip material longitudinally after it has been fully formed transversely, the improvement which comprises a longitudinal forming assembly adjustable to generate a helix of the transversely formed strip material in which a given original surface of the strip material may be wound either to the inside or to the outside of the helix according to the adjustment of the assembly and including (1) a support member vertically adjustably mounted with respect to the pair of rolls between which the strip material is finally transversely formed and in spaced relation to these rolls in the general direction of travel of strip material being formed, (2) at least one arm member pivotably mounted on said support member, (3) means for adjusting the angular orientation of said arm with respect to said support member whereby at least one end of said arm may be swung either relatively close to or relatively far away from said pair of rolls between which the strip material is finally transversely formed as compared to the spacing from these rolls of the pivot axis of said arm member on said support member, (4) one longitudinal forming roll rotatably mounted on said support member and having its axis coincident with the pivot axis of said arm member and essentially parallel to the axes of the rolls of said final pair of transverse forming rolls, and (5) another longitudinal forming roll rotatably mounted on said arm member adjacent said swingable end thereof in axially parallel and spaced relation to said one longitudinal forming roll, said one and another longitudinal forming rolls together being generally so aligned with respect to said pair of rolls between which the strip material is finally transversely formed that material traveling from these transverse forming rolls may enter directly between the longitudinal forming rolls, and the range of vertical adjustment of said support means being such that the longitudinal forming rolls may together be moved from an elevation somewhat above to one somewhat below that of the final pair of transverse forming rolls.

7. The improvement according to claim 6 in which said one an danother longitudinal forming rolls have mating contours essentially identical from roll to roll of corresponding upper and lower rolls with those of the rolls of said pair of rolls between which the strip material is finally transversely formed.

8. The improvement according to claim 6 in which said other longitudinal forming roll is movably mounted on said arm member so that its axial spacing from said one longitudinal forming roll may be controllably changed.

9. The improvement according to claim 6 in which there are two spaced arm members pivotably mounted on the same axis on said support member with said other longitudinal forming roll being rotatably mounted on and between these arm members, and in which the means for adjusting the angular orientation of said arm members with respect to said support member comprises separate, individually manipulatable screw means operative between each of said arm members and said support member.

10. The improvement according to claim 6 in which there are two spaced arm members pivotably mounted on the same axis on said support member with said other longitudinal forming roll being rotatably mounted on and between these arm members, and in which the means for adjusting the angular orientation said arm 'members with respect to said support member comprises (1) a U-frame member the free ends of the side pieces of which are pivotably connected to said arm members in yoked relation therto at points having turning radii around the pivot axis of the arm members, and (2) a single adjusting screw means operative between said U-frame member and said support member.

References Cited UNITED STATES PATENTS -18,058 8/1857 Raymond 72168 1,154,884 9/1915 Puppe 72-248 X 1,166,814 1/1916 Cleesattel 72--168 1,478,772 12/1923 Stiefel 72-248 1,692,400 11/1928 Auble 72168 1,800,023 4/ 1931 Kozicz 72l81 2,165,282 7/1939 Loggins 72-179 X 2,775,284 12/1956 Hermann 72-179 X MILTON S. MEHR, Primary Examiner.

US. Cl. X.R.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Dated 1111 y i, 1 969 Patent No LL82 668 Inventor(I) Bernhard Vihl It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

line 10: for "determination" read Column 8, line 6 4: for "17" read --1l7--; line 65: for "17" read --ll7--; line 71: for "1 4" read --ll Column 13, line 22: between "of" and "rolls" cancel "the" Column 16, line 2 (Claim 7, line 2): for "an danother" read --and another--. Column 16, line 2'? (Claim 10, line 6): between "orientation" Column 1, --determinate--.

and "said" insert --of--.

SIGNED AND SEALED MAR 1 0 1970 Edward M. Fletcher, Ir.

wmxm E. rsauurmz, .m.

Attostmg Officer Commissioner of Patents

US3452568D 1967-01-31 1967-01-31 Apparatus for continuous forming of strip material Expired - Lifetime US3452568A (en)

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US5359871A (en) * 1992-04-22 1994-11-01 M.I.C. Industries, Inc. Microprocessor controlled apparatus and method for forming metal building panels
US5687596A (en) * 1994-10-31 1997-11-18 For.El. Base Di Vianello Fortunato & C. S.N.C. Calendering aluminum profiles for producing spacer frames for insulating glazing units
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US6000266A (en) * 1997-09-17 1999-12-14 The Bradbury Company Roll-forming machine with reversible rafts
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US20100011829A1 (en) * 2006-08-23 2010-01-21 Metform International Ltd. Roll-forming machine for forming smooth curves in profiled panel sections and method of forming curved panels
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US5983691A (en) * 1997-04-08 1999-11-16 The Bradbury Company, Inc. Roll-forming machine
US6000266A (en) * 1997-09-17 1999-12-14 The Bradbury Company Roll-forming machine with reversible rafts
US6216514B1 (en) 1999-01-22 2001-04-17 The Bradbury Company, Inc. Roll-forming machine
US6434994B2 (en) 1999-01-22 2002-08-20 The Bradbury Company, Inc. Roll-forming machine
US6209374B1 (en) 1999-10-08 2001-04-03 The Bradbury Company, Inc. Roll-forming machine with adjustable compression
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Also Published As

Publication number Publication date
DE1602597B2 (en) 1975-04-30
DE1602597C3 (en) 1975-12-11
GB1143459A (en) 1969-02-19
DE1777331A1 (en) 1972-06-15
DE1777331B2 (en) 1973-05-17
DE1777331C3 (en) 1973-11-29
DE1602597A1 (en) 1971-04-01
CH460681A (en) 1968-08-15

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