1. A flange forming apparatus comprising: a support frame; a plurality of roll forming stations attached to the support frame for forming a flange in a sheet of material, wherein each of the stations is adjustable in regards to a dimensional characteristic of the flange to be produced or operated upon by the station; an adjustment mechanism attached to the support frame, said adjustment mechanism being operably connected to the plurality of roll forming stations for adjusting the roll forming stations concurrently together; and a limit switch assembly operably connected to said adjustment mechanism, said limit switch assembly halting operation of said adjustment mechanism when said roll forming stations are adjusted beyond a predetermined limit.

2. The fl ange forming apparatus of claim 1, wherein: the roll forming stations are infinitely adjustable within a set range defined by maximum and minimum values for the flange dimensional characteristics.

3. The flange forming apparatus of claim 2, wherein, for each of said stations, the dimensional characteristic is a height of the flange.

4. (Original) The flange- forming apparatus of claim 2, wherein: each roll forming station includes at least one roll forming pair, $aid pair comprising first and second coaxial roll forming portions, said second roll forming portion being axially moveable towards and away from the first roll forming portion; and the adjustment mechanism includes: 31

an adjtistment drive unit; and an adjustment linkage assembly operably connected to the drive unit and to the second roll forming portions _/ said adjustment linkage assembly establishing respective axial positions of the second roll forming portions, wherein for each roll forming pair, operation of the drive unit causes the adjustment linkage assembly to change the axial position of the second roll forming portion with respect to the first roll forming portion and, thereby, a distance there between, said distance corresponding at least in part to the dimensional characteristic of the flange to be produced or operated upon by the station.

5. (Original) The flange forming apparatus of claim 4, wherein: the adjustment drive unit includes a rotatably driven screw member; and the adjustment linkage assembly includes a bearing support assembly and a screw adaptor attached thereto and threaded on to the screw member, said bearing support assembly being operably interfaced with the second roll forming portions of the roll forming pairs for establishing the axial position thereof; wherein actuation of the adjustment drive unit causes the screw member to rotate and the screw adaptor to move along the screw member, thereby shifting the bearing support assembly and changing the axial position of each second roll forming portion and the distance between it and its respective first roll forming portion.

6. (Original) The flange forming apparatus of claim 4, wherein: the adjustment drive xxnit includes a plurality of rotatably driven screw members; and the adjtistrnent linkage assembly includes a bearing support assembly and a plurali ty of screw adaptors attached thereto and respectively threaded on the screw members, said bearing support assembly being operably interfaced with the second roll forming portions for establishing the axial positions thereof; wherein operation of the adjustment drive unit causes the screw members to rotate and the screw adaptors to respectively move along the screw members, thereby shifting the bearing support assembly and changing the axial positions of the second ΓQII forming portions and the distances between them and respective first roll forming portions.

7. (Original) The flange forming apparatus of claim 6, wherein the screw members are interconnected by a chain drive, such that rotation of one of the screw members or the chain drive by a motor or hand crank portion of the adjustment drive unit causes all of said plurality of screw members to rotate in concert.

8. (Original) The flange forming apparatus of claim 7, wherein the adjustment drive unit comprises the motor, a sprocket connected to one of the screw members or to the chain drive, and a motor chain interconnecting the motor and sprocket

9. (Original) The flange forming apparatus of claim 4, wherein the first and second roll forming portions of each roll forming pair are supported on and rotatably driven by a spindle, said first roll forming portion being fixed on the spindle and said second roll forming portion being axially moveable along the spindle.

10- (Original) The flange forming apparatus of claim 9, wherein: the spindle includes an axially-oriented key slot formed therein; the second roll forming portion is slidably attached to the spindle within the key slot, wherein rotation of the spindle causes the second roll forming portion to rotate through interaction of the key slot and second roll forming portion; and the spindle and the second roll forming portion extend through, and are rotatably supported by, a bearing carried in a bearing support assembly portion of the adjvistment linkage assembly, said bearing support assembly establishing the position of the second roll forming portion along the key slot and thereby the distance between the second roll forming portion and its respective first roll forming portion attached to the spindle.

11, (Original) The flange forming apparatus of claim 2 wherein: each roll forming station includes at least one roll forming pair, said roll forming pair comprising: 33

a first roll forming portion fixedly attached to a rotatable spindle, said first roll forming portion and said spindle being non-axially moveεible with respect to one another; and a second roll forming portion attached to the spindle and coaxial with the first roll forming portion, said spindle being drivable to rotate the first and second roll forming portions, wherein the second roll forming portion is axially moveable along the spindle for adjustment of a distance between the first and second roll forming portions, said distance corresponding at least in part to the dimensional characteristic of the flange to be produced or operated upon by the station; and the adjustment mechanism comprises: an adjustment drive unit having a plurality ^' of screw members configured for rotation by a motor or hand crank; and an adjustment linkage assembly comprising: a bearing support assembly; and a plurality of screw adaptors attached to the bearing support assembly and respectively threaded on the screw members, said bearing support assembly rotatably supporting the spindle of the roll forming pair and being operably interfaced with the second roll forming portion of the roll forming pair for establishing an axial position of the second roll forming portion along the spindle; wherein rotation of the screw members causes the screw adaptors to axially move along the screw members, said adaptors being prevented from rotation due to their attachment to the bearing support assembly, thereby shirting the axial positions of the second roll forming portions for adjusting respective distances between the second roll forming portions and the first roll forming portions.

12. (Original) The flange forming apparatus of claim 11 wherein: the plurality of adjustable roll forming stations are sequentially arrayed along the support frame in a first unitary group; and the apparatus further comprises a plurality of nσn-concurrently adjustable roll forming stations sequentially arrayed along the support frame in a second unitary group, said adjustable and non-adjustable stations performing sequential operations on the sheet of material for forming a flange therein. 34

13. (Original) The flange forming apparatus of claim 12 wherein: each roll forming station includes two of said roll forming pairs, a first one of said pairs being located generally above a second one of said pairs, and said first and second pairs being axially aligned and laterally adjacent to one another; each of said roll forming pairs is a roll forming die, the first and second pairs being complementary in shape to one another for performing a roll forming operation on the sheet of material; the roll forming pair spindles are attached to and rotatably supported by a fixed bearing block assembly attached to the support frame; all the second roll forming portions of the roll forming pairs in the sequential array of adjustable roll forming stations are rotatably attached to the bearing support assembly portion of the adjustment linkage assembly, said bearing support assembly including: bearings for rotatably supporting the spindles and second roll forming portions; and one or more bearing blocks holding the bearings, said adjustment linkage assembly extending generally the length of the sequential array of adjustable roll forming stations and being moveable as a unit; and the screw members are threaded through the screw adaptors of the adjustment linkage assembly, wherein rotation of the screw members upon actuation of the adjustment drive unit causes the adjustment linkage assembly to more towards or away from the fixed bearing block assembly and all the second roll forming portions to move away or towards the first roll forming portions.

14. A flange forming apparatus comprising: a support frame; a plurality of adjustable roll forming means attached to the support frame for forming a flange in a sheet of material; and adjustment means attached to the support frame and operably interfaced with the plurality of adjustable roll forming means for adjusting the roll forming means concurrently together; and a limit switch assembly operably connected to said adjustment means, said limit switch assembly halting operation of said adjustment means when said roll forming means are adjusted beyond a predetermined limit. 35

15. A flange forming apparatus comprising: a support frame; at least one roll forming station attached to the support frame for at least partially forming a flange in a sheet of material moving through the apparatus, said roll forming station comprising! a first roll forming portion fixedly attached to a spindle for rotation thereby; and a second roll forming portion attached to the spindle for rotation thereby and coaxial with the first roll forming portion, said second roil forming portion being moveable along the spindle for adjustment of a distance between the first and second roll forming portions, said distance relating to a height of the flange produced by the apparatus; and an adjustment mechanism attached to the support frame, said adjustment mechanism rotatably supporting the spindle and establishing, for the spindle, the position of the second roll forming portion along the spindle and thereby the distance between the first and second roll forming portions; and a limit switch assembly operably connected to said adjustment mechanism, said limit switch assembly halting operation of said adjustment mechanism when said roll forming portions are adjusted beyond a predetermined limit.

16. (Original) The flange forming apparatus of claim 15 wherein: the spindles are parallel to one another; and the first and second roll forming portions of the first spindle are axially aligned with and laterally spaced apart from the first and second roll forming portions of the second spindle, respectively, said first roll forming portions and said second roll forming portions respectively cooperating for at least partially forming the flange in the sheet of material.

17. (Original) The flange forming apparatus of claim 16 wherein the adjustment mechanism includes: 36

an adjustment drive unit having a motor or hand crank and at least one screw member rotatably driven by said motor or hand crank; and an adjustment linkage assembly having at least one screw adaptor threaded on the at least one screw member, said adjustment linkage assembly rotatably supporting the roll forming station, wherein operation of the adjustment drive unit causes the at least one screw member to rotate and the at least one screw adaptor to move along the at least one screw member, for shifting the adjustment linkage assembly as a whole and thereby adjusting the roll forming station.

18. (Original) The flange forming apparatus of claim 17 wherein the adjustment drive unit includes a plurality of screw members, and the adjustment linkage assembly includes a plurality of screw adaptors respectively threaded on the screw members, said screw members being interconnected by a chain drive, wherein rotation of one of the screw members by the motor or hand crank causes all of the screw members to rotate in concert.

19. (Original) The flange forming apparatus of claim IS wherein: the flange forming apparatus includes a plurality of said roll forming stations; and operation of the adjustment drive unit causes the roll forming stations to be adjusted concurrently, for movement of the second roll forming portions carried on the spindles towards or away from the first roll forming portions.

20. (Original) The flange forming apparatus of claim 15 wherein for each spindle, the distance between the first and second roll forming portions is infinitely adjustable within predetermined minimum and maximum limits.