US1875220A - Rolling mill housing - Google Patents

Rolling mill housing Download PDF

Info

Publication number
US1875220A
US1875220A US540302A US54030231A US1875220A US 1875220 A US1875220 A US 1875220A US 540302 A US540302 A US 540302A US 54030231 A US54030231 A US 54030231A US 1875220 A US1875220 A US 1875220A
Authority
US
United States
Prior art keywords
rolls
blocks
housings
housing
work
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US540302A
Inventor
James R Coe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Brass Co
Original Assignee
American Brass Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Brass Co filed Critical American Brass Co
Priority to US540302A priority Critical patent/US1875220A/en
Application granted granted Critical
Publication of US1875220A publication Critical patent/US1875220A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/02Rolling stand frames or housings; Roll mountings ; Roll chocks
    • B21B31/028Prestressing of rolls or roll mountings in stand frames
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B13/00Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/02Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
    • B21B2013/025Quarto, four-high stands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16Adjusting or positioning rolls
    • B21B31/20Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B2031/206Horizontal offset of work rolls

Definitions

  • This invention relates to rolling mills, such for example as are used for rolling sheet metal.
  • These rolling mills ordinarily have upright spaced housings between which the 5 rolls are mounted, the bearings for the rolls being ordinarily mounted in the housings, and each'housing carries means, such as a. heavy screw, in its top member adapted to adjust the position of the upper rolls and.
  • Fig. 1 is an end elevation of a rolling mill
  • Fig. 2 is a transverse section oir an enlargedscale through this mill with a section V through one housing being taken on a plane between the working rolls and the backing rolls and through the other housing on the plane substantially on the axis of the upper work roll;
  • Fig. 3 is a side elevation of the central portion of the housing on an enlarged scale with parts broken away to more clearly show the construction.
  • the mill as illustrated comprises the two upright housings 10 having the usual laterally extending ears llresting on the usual rail supports not shown, and on which they are laterally adjustable in the usual manner.
  • These housings comprise the upright side members 12 and the top and bottom connecting portions 13 and 14.
  • These housings are usually of heavy steel castings to withstand the high strains incident to the forces required for the rolling operation.
  • I haveillustrated a so called fourhigh rolling mill comprising two work 100 'rolls15 and 16 of relatively small diameter lower bacln'n roll are mounted in bearing blocks 20 restlng on the lower portion 14 of the housings andthey are held therein by the guide plates 21.
  • the necks 22 ofthe backing roll 17 are held in suitable bearing blocks 23 guided for vertical movements in the hpusings and held therein by the guide plates 2
  • the necks 25 of the work rolls 15 and 16 are held in bearing blocks 26 carried in yokes 27 and 28, the upper yoke 27 as shown in Fig. 3 being substantially U-shaped and the yoke 28 being substantially the same shape but inverted'.
  • the sides 29 of these yokes are mounted for vertical movement in guideways y 30 in su porting blocks 31, the yokes being held infill ese guideways by the plates 32 secured. by screws 33.
  • the blocks 31 have upright pockets 34 in which are mounted springs 35 hearing at their opposite ends against plungers 36.
  • these work rolls may beshifted laterally so their axes-may be shifted from'one side to the other of the center line 40 of the backing rolls as desired when ⁇ the rolls a're' used as reversing rolls, and also topermit use of the.
  • the supporting blocks 31 are mounted in suitable guide blocks or brackets 41 and 41a secured to the sides of the housings.
  • these blocks or brackets 41 have front plates or arm portions 42 secured to the face of the housings as by screws 43, and they have upright guides 44 to receive the side guides 45 on the blocks 31 to thus permit these blocks- 31 to shift laterally toward and from the sides of the housings in a horizontal plane,
  • each of the blocks 31 is provided with an inclined side wall 46 and between this wall and the brackets 41 is a tapered cam or wedge block 47 having a side 48 inclined to correspond with the Wall 46 and engage the same. It is preferred that these cam or wedge bl0ckst47 be of less width than the height of the blocks 31'and brackets 41 as indicated in Fig. 3, and that the inclined surfaces 46 on the block-31 and the opposed straight surface 49 in the bracket 41 to engage the opposite side of the wedge block Thus it will be evident that the wedge blocks 47 will retain the blocks 31 and support them in the brackets 41.
  • each wedge block 47 I is connected an adjusting screw '50 passing through the bearing 51 on the bracket 41 and. carrying an adjusting nut 52 and a lock nut 53.
  • These screws are connected'to their're spective wedge blocks by any suitable means I such as having the inner end of these screws extending intoa recess in one side of the block and secured thereto by a pin 54.
  • any suitable means I such as having the inner end of these screws extending intoa recess in one side of the block and secured thereto by a pin 54.
  • bracket 41a carries a suitable thrust bearing 56 to retain the roll in proper position.
  • the pressure of the rolls may be adjusted by heavy. adjusting screws 57 threaded into The work rolls are driven by any suitable ⁇ means not shown, from an suitable source ioc heavy sleeves or nuts 58 mounted in the upper portions 1310f the housings and held.”
  • Screws “57 may be operated by any suitable means not shown, for adjusting the pressure J on the rolls such for example as a lon handle wrene or an, electric motorgeare to the-screw.
  • the housing with upright longitudinal openings 60 through their side members 12, and mounting in these openings heavy bolts 61 which are held by nuts 62 and 63 at their upper and lower ends. It will be evident that if'these bolts are expanded by heating to a given temperature to secure the necessary expansion which can be readily calculated, and the nuts 62 and 63 set while the bolts are so heated and expanded, when the bolts cool they will contract and place the housing under a compression strain depending upon the amount of expansion of the bolts before they were set up in the housing.
  • a rolling mill upright housings, a pair of relatively small diameter work rolls extending between the housings, backing rolls for the work rolls, guide blocks secured to the sides of the housing, supporting blocks carried by the guide blocks and movable laterally thereon, a wedge shaped block between each supporting block and its guide block, means to shift the wedge shaped blocks to shift the supporting blocks, yokes guided for vertical movement in the supporting-blocks, bearings for the work rolls in the yokes, and springs tending to separate the yokes to hold the work rolls against the backing rolls.
  • a rolling mill upright housings, a pair of relatively small diameter work rolls extending between the housings, backing rolls for the work rolls, vertically movable supports for the work rolls, blocks carrying said .supports and mounted for lateral movements transversely the axes of the rolls, guide blocks mounted in the housing outwardly of the supporting blocks, the adjacent guide blocks and supporting blocks having aligned transverse recesses extending in the direction ofthe axes of the rolls, wedge shaped blocks. mounted in said recesses to retain the supporting blocks against vertical movement, and means for shifting the wedge blocks to shift the work rolls laterally.
  • each supporting block having one or more upright sockets, springs in said sockets, vertically movable plungers at the opposite ends of the springs and pressed outwardly thereby, a vertically movable yoke resting on the ends of the upper plungers, bearings for the upper work roll in said yoke, a second yoke having shoulders on which the ends of the lower plungers rest, anddhearing's for the lower work roll in the secon yoke.
  • an upright housing a pair of relatively small diameter work .rolls extending from the housing, backing rolls for the work rolls having bearings in the housing, bearings for the work rolls, supports for the work roll bearings having laterally extending vertically spaced shoulders, supporting blocks mounted in the housing outwardly v of said supports and having upright sockets, upright plungers projecting from the opposite ends of the sockets, the shoulders on the upper support resting on the upper plungers and the lower plungers resting on the shoulders of the lower supports, and springs between the plungers in a socket tending to shift them in opposite directions.
  • each guide block carried by each guide block and mounted for 'j aeent-supportiiig block having aligned transand holding the supporting block against lateral movement, each guide block and ad- NGI'SG recesses, 21 wedge block in said recesses vertical movement, means for shifting the wedge block to shift the supporting block laterally, upper and lower vertically movable plungers carried by the supportingblock, and spring means tending to shift the-plungers in 0 posite directions, the support for the bearmgswfor the upper work roll being sup- I ported b "the upper plunger and the lower plunger eing' supported'on the support for the bearings for the lower work roll.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Description

Aug. 36, 1932. J R CQE 1,875,220
ROLLING MILL HOUS ING Filed May 7, 1931 3 Sheets-Sheet 1 ROLLING MILL HOUSING Filed May 27, 1931 s Sheets-Sheet 2 I I if E; 25 II II I III I I I I I I Z I I I I I 'I III "I IIIIII 5 I I- I II III 3 54 I; III I III II I I I I A id H II [I II I Aug. 30, 1932. J, R COE ROLLING MILL HOUSING s sheets-sheet 3 Filed May 27, 1931 Patented Aug. 30, 1932 UNITED STATES PATENT OFFICE.
JAMES R. COE, OF WATERB'O'RY, CONNECTICUT, ASSIGNOR TO THE AMERICAN BRASS COMPANY, OF WATER/BURY, CONNECTICUT, A CORPORATION OF CONNECTICUT ROLLING MILL HOUSING Application filed May 2'7,
This invention relates to rolling mills, such for example as are used for rolling sheet metal. These rolling mills ordinarily have upright spaced housings between which the 5 rolls are mounted, the bearings for the rolls being ordinarily mounted in the housings, and each'housing carries means, such as a. heavy screw, in its top member adapted to adjust the position of the upper rolls and.
' given thickness this stretching will permit the rolls to separate and the metal will not be rolled to the proper gauge.
To overcome this objection it has been common practice to tighten up the adjusting screws on the rolls so as to place an initial pressure on the rolls and the housing comparable-to the pressures encountered during the rolling operation to expand or stretch the housings before the metal is fed into the rolls to and thus reduce or eliminate the separation of the rolls during the rolling operation. This operation has numerous objections such for example as that the'rolls are under high pressure at' all times, and when running idle as the contacting surfaces between the rolls is a line contact these pressures tend to crush or destroy the surface of the rolls. Also due to these high pressures there is a high pressure in @he bearings for the necks of the rolls invention to provide an improved construcwhich absorbs a large amount of power so that it requires nearly as much power to operate,
Serial No. 540,302.
tion of rolling mill in which the above noted objections are obviated, and in which there is' practically no pressure on the rolls when running idle, thus saving a large amount of power and protecting the surface of the rolls against injury.
It is also an object of the invention to provide improved means for use in fourhigh and similar mills for adjustingthe positions of the work rolls.
It is a further object of the invention to provide a construction which will facilitate sticking or starting of the end of the metal in the rolls at the beginning of the rolling operation.
With the foregoing and other objects in view the invention consists in certain novel features of construction, combinations and arrangement of parts as will be more fully disclosed in connection with the accompanying drawings.
In these drawings:
Fig. 1 is an end elevation of a rolling mill,
particularly a side elevation of one of the housings showing my improved construction;
Fig. 2 is a transverse section oir an enlargedscale through this mill with a section V through one housing being taken on a plane between the working rolls and the backing rolls and through the other housing on the plane substantially on the axis of the upper work roll; and
Fig. 3 is a side elevation of the central portion of the housing on an enlarged scale with parts broken away to more clearly show the construction. I
The mill as illustrated comprises the two upright housings 10 having the usual laterally extending ears llresting on the usual rail supports not shown, and on which they are laterally adjustable in the usual manner. These housings comprise the upright side members 12 and the top and bottom connecting portions 13 and 14. These housings are usually of heavy steel castings to withstand the high strains incident to the forces required for the rolling operation. In the present instance I haveillustrated a so called fourhigh rolling mill comprising two work 100 'rolls15 and 16 of relatively small diameter lower bacln'n roll are mounted in bearing blocks 20 restlng on the lower portion 14 of the housings andthey are held therein by the guide plates 21. The necks 22 ofthe backing roll 17 are held in suitable bearing blocks 23 guided for vertical movements in the hpusings and held therein by the guide plates 2 The necks 25 of the work rolls 15 and 16 are held in bearing blocks 26 carried in yokes 27 and 28, the upper yoke 27 as shown in Fig. 3 being substantially U-shaped and the yoke 28 being substantially the same shape but inverted'. The sides 29 of these yokes are mounted for vertical movement in guideways y 30 in su porting blocks 31, the yokes being held infill ese guideways by the plates 32 secured. by screws 33. The blocks 31 have upright pockets 34 in which are mounted springs 35 hearing at their opposite ends against plungers 36. These plungers have reduced end portions 37 engaging lateral flanges 38 on the free edges 0 the side members 29 of the yokes 27 and 28. It will therefore be" evident that these springs 35 tend to separate the yokes 27 and 28 or shift themvertically in opposite directions, and thus side of the axes of the backing rolls, and on.
hold the work rolls 15 and 16 in engagement with their respective backing rolls 17 and 18. In this tgpe of mill it is necessary that the work rolls 6 properly lined up with respect to the backing rolls, and-for the best operation it is also desirable thatthe axes of the work rolls be located a short distance to one the side on. which the metal is fed out of the mill. Thus as shown in Fig.3 if the metal is fed into the mill from the right, it is de- 15 and 16 indicated by'the line 39 be placed sirable that the center line of the'work rolls somewhat to the other side of the. centers of the backing rolls 17? and18 which are on the line 40. Therefore means is provided'so that "and the backing rolls.
these work rolls may beshifted laterally so their axes-may be shifted from'one side to the other of the center line 40 of the backing rolls as desired when \the rolls a're' used as reversing rolls, and also topermit use of the.
rolls for passing the metal in either direction. This construction is also used for keep-,-
ing the work rolls parallel with each other In the present instance the supporting blocks 31 are mounted in suitable guide blocks or brackets 41 and 41a secured to the sides of the housings. In the present instance these blocks or brackets 41 have front plates or arm portions 42 secured to the face of the housings as by screws 43, and they have upright guides 44 to receive the side guides 45 on the blocks 31 to thus permit these blocks- 31 to shift laterally toward and from the sides of the housings in a horizontal plane,
- and therefore shift the centers of the work rolls. Suitable means is provided for shifting these blocks 31 and retaining them in adjusted position. Thus each of the blocks 31 is provided with an inclined side wall 46 and between this wall and the brackets 41 is a tapered cam or wedge block 47 having a side 48 inclined to correspond with the Wall 46 and engage the same. It is preferred that these cam or wedge bl0ckst47 be of less width than the height of the blocks 31'and brackets 41 as indicated in Fig. 3, and that the inclined surfaces 46 on the block-31 and the opposed straight surface 49 in the bracket 41 to engage the opposite side of the wedge block Thus it will be evident that the wedge blocks 47 will retain the blocks 31 and support them in the brackets 41. To each wedge block 47 I is connected an adjusting screw '50 passing through the bearing 51 on the bracket 41 and. carrying an adjusting nut 52 and a lock nut 53.. These screws are connected'to their're spective wedge blocks by any suitable means I such as having the inner end of these screws extending intoa recess in one side of the block and secured thereto by a pin 54. Thus it will be evidentthat by adjusting the nuts 52 the cam blocks may be shifted to'lateralli shi'ft'the supporting blocks 31 and the wor rolls carried thereby. After adjustment they ma be secured in adjusted position by the loc nuts53.
of power. Thus they may driven by couplings connected to a wabbler end 55 in the usual manner. .At the opposite :end the bracket 41a carries a suitable thrust bearing 56 to retain the roll in proper position.
The pressure of the rolls may be adjusted by heavy. adjusting screws 57 threaded into The work rolls are driven by any suitable \means not shown, from an suitable source ioc heavy sleeves or nuts 58 mounted in the upper portions 1310f the housings and held."
against turning therein. At their lower ends these screws may seat in] washers or plugs 59 mounted on the tops of'the bearings 23.
Screws "57 may be operated by any suitable means not shown, for adjusting the pressure J on the rolls such for example as a lon handle wrene or an, electric motorgeare to the-screw.
As intimated above, duringrolling operations there may be 'very heavy pressures mvolved these pressures may stretchor expand the s1des '12 of the'housings, and there- 47 are on the bottoms of transverse recesses. 9
ama 2o fore the rolls may be separated too much to obtain the desired gauge,and it will be evident that if the screws 57 are run downwardly sufliciently to give this pressure to stress the side members 12 before the roll'ng operation there will be great pressure between the surfaces of the rolls tending to crush or mar them, and also when the rolls are running idle this pressure will cause great loss of power in the bearings on the necks of the rolls. I have overcome these objections by connecting the upper and lower portions of the housing with tie elements which are placed under initial tension greater than the pressures to be sustained during the rolling operation.
This may be done in various ways, but the simplest and most convenient is to provide the housing with upright longitudinal openings 60 through their side members 12, and mounting in these openings heavy bolts 61 which are held by nuts 62 and 63 at their upper and lower ends. It will be evident that if'these bolts are expanded by heating to a given temperature to secure the necessary expansion which can be readily calculated, and the nuts 62 and 63 set while the bolts are so heated and expanded, when the bolts cool they will contract and place the housing under a compression strain depending upon the amount of expansion of the bolts before they were set up in the housing. It will thus be evident that these bolts can be heated and .expanded and the nuts 62 and 63 so set while and very little power is lost, and the surfaces of the rolls are not liable to injury therefrom, and when the metal is passed between the rolls there is no stretching of the housing to permit the rolls to separate, therefore i .the rolls can be properly set without placing a large strain on the rolls or the adjusting screws 57 and this setting will be accurately maintained during the rolling operation. This also greatly facilitates sticking or starting of the metal through the rolls at the beginning of the rolling operation.
Having thus set forth the nature of my invention, what I claim is:
1. In a rolling mill, upright housings, a pair of relatively small diameter work rolls extending between the housings, backing rolls for the work rolls, guide blocks secured to the sides of the housing, supporting blocks carried by the guide blocks and movable laterally thereon, a wedge shaped block between each supporting block and its guide block, means to shift the wedge shaped blocks to shift the supporting blocks, yokes guided for vertical movement in the supporting-blocks, bearings for the work rolls in the yokes, and springs tending to separate the yokes to hold the work rolls against the backing rolls.
2. In a rolling mill, upright housings, a pair of relatively small diameter work rolls extending between the housings, backing rolls for the work rolls, vertically movable supports for the work rolls, blocks carrying said .supports and mounted for lateral movements transversely the axes of the rolls, guide blocks mounted in the housing outwardly of the supporting blocks, the adjacent guide blocks and supporting blocks having aligned transverse recesses extending in the direction ofthe axes of the rolls, wedge shaped blocks. mounted in said recesses to retain the supporting blocks against vertical movement, and means for shifting the wedge blocks to shift the work rolls laterally.
3. In a rolling mill, upright housings, a pair of relatively small diameter work rolls extending between the housings, backing rolls for the work rolls, guide blocks mounted in the housings at opposite sides of the work rolls, supporting blocks mounted for lateral movement in the guide blocks, wedge blocks between each guide block and the adjacent supporting block, means for shifting the wedge block to shift the supporting blocks, each supporting block having one or more upright sockets, springs in said sockets, vertically movable plungers at the opposite ends of the springs and pressed outwardly thereby, a vertically movable yoke resting on the ends of the upper plungers, bearings for the upper work roll in said yoke, a second yoke having shoulders on which the ends of the lower plungers rest, anddhearing's for the lower work roll in the secon yoke.
4. In a rolling mill, an upright housing, a pair of relatively small diameter work .rolls extending from the housing, backing rolls for the work rolls having bearings in the housing, bearings for the work rolls, supports for the work roll bearings having laterally extending vertically spaced shoulders, supporting blocks mounted in the housing outwardly v of said supports and having upright sockets, upright plungers projecting from the opposite ends of the sockets, the shoulders on the upper support resting on the upper plungers and the lower plungers resting on the shoulders of the lower supports, and springs between the plungers in a socket tending to shift them in opposite directions. I
carried by each guide block and mounted for 'j aeent-supportiiig block having aligned transand holding the supporting block against lateral movement, each guide block and ad- NGI'SG recesses, 21 wedge block in said recesses vertical movement, means for shifting the wedge block to shift the supporting block laterally, upper and lower vertically movable plungers carried by the supportingblock, and spring means tending to shift the-plungers in 0 posite directions, the support for the bearmgswfor the upper work roll being sup- I ported b "the upper plunger and the lower plunger eing' supported'on the support for the bearings for the lower work roll. In testimony whereof I 'affix' my signature.
I JAMES COE.
US540302A 1931-05-27 1931-05-27 Rolling mill housing Expired - Lifetime US1875220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US540302A US1875220A (en) 1931-05-27 1931-05-27 Rolling mill housing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US540302A US1875220A (en) 1931-05-27 1931-05-27 Rolling mill housing

Publications (1)

Publication Number Publication Date
US1875220A true US1875220A (en) 1932-08-30

Family

ID=24154875

Family Applications (1)

Application Number Title Priority Date Filing Date
US540302A Expired - Lifetime US1875220A (en) 1931-05-27 1931-05-27 Rolling mill housing

Country Status (1)

Country Link
US (1) US1875220A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747927C (en) * 1938-06-28 1944-10-20 Roller stand with shrink-wrapped tie rods to absorb the roller pressure
US3128650A (en) * 1959-06-16 1964-04-14 Skf Svenska Kullagerfab Ab Multiple roll rolling mill
US3217525A (en) * 1962-11-06 1965-11-16 Davy & United Eng Co Ltd Prestressed rolling mills
DE1652983B1 (en) * 1962-07-20 1971-07-29 Canada Steel Co Four-high roll stand

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747927C (en) * 1938-06-28 1944-10-20 Roller stand with shrink-wrapped tie rods to absorb the roller pressure
US3128650A (en) * 1959-06-16 1964-04-14 Skf Svenska Kullagerfab Ab Multiple roll rolling mill
DE1652983B1 (en) * 1962-07-20 1971-07-29 Canada Steel Co Four-high roll stand
US3217525A (en) * 1962-11-06 1965-11-16 Davy & United Eng Co Ltd Prestressed rolling mills

Similar Documents

Publication Publication Date Title
US1614425A (en) Rolling mill
US1875220A (en) Rolling mill housing
US1761268A (en) Crushing-roll apparatus
US1636057A (en) Rolling mill
US4237714A (en) Stand of cold tube-rolling mill
US2038795A (en) Releasing means for jammed presses
US2911804A (en) Rolling mill coupling
US287008A (en) Continuous rolling-mill
US1892933A (en) Rolling mill
US3394575A (en) Prestressed rolling mill
US3459023A (en) Rolling mill
US1437953A (en) Plate-bending press
US1895607A (en) Rolling mill
US2835021A (en) Roll stand lock
US3422655A (en) Prestressed rolling mill
US4238947A (en) Work roll chock assembly for a rolling mill
US1870509A (en) Rolling mill
US2353375A (en) Roller leveler
US1778339A (en) Die holder
US2028354A (en) Adjustable die holder
US2005168A (en) Rolling mill
US1864299A (en) Rolling mill
US3651675A (en) Automatic gauge control of strip in rolling mill employing backup roll bending
US1980570A (en) Rolling mill
US1255666A (en) Camber-removing machine.