US1109885A

US1109885A - Rolling-mill or similar installation.

Info

Publication number: US1109885A
Application number: US75362213A
Authority: US
Inventors: William R Webster
Original assignee: Bridgeport Brass Co
Current assignee: Bridgeport Brass Co
Priority date: 1913-03-11
Filing date: 1913-03-11
Publication date: 1914-09-08
Anticipated expiration: 1931-09-08

Description

W. R. WEBSTER. ROLLING MILL 0R SIMILAR INSTALLATION.

APPLIGATIoN-HLED MAR.1 1,1913.

1,109,885, Patented Sept.8, 1914.

2 SHEETS-SHEET 1.

VITNESSES: [.VVENTOR.' 7% M WCW M@ f?. 06ML BY l ATTORNEY.

W. R. WEBSTER.

ROLLING MILL 0R SIMILAR INSTALLATION. APPLIOATION FILED MAB11,1913.

1,109,885. Patented sept.8,1914.

2 SHEETS-SHEET 2.

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WILLIAM n. WEBSTER, 0E annoncen-CONNECTICUT, .AssIGNoE 'ro ERIDGEPOET BRASS COMPANY, 0F NECTICUT.

Specicati'lm of Letterslatet. YApplica'ci'o'xi'illerljllfsusch 11, 1918. Serial No. 753,622. l

BRIDGEPOBT, CONNECTICUT, A VC0II.POII5A'.I.IOI\T 0F CON-- BOIiLING-MILB ORSIMILAR INSTALLATION. 1l y Patented sep-1;."` s, 1914.

To all whom it may concern:

a citizen of the United States, residingin, Bridgeport, county of Fairfield, and `Statey of Connecticut, have invented certain new.`l and useful Improvements in Rolling-Millorl Similar Installations, of whichv the follow# ing is 'a full, clear, and exact description.

This invention relates tometal working: devices for operating on strips, bars, wires.' or other lengths of stock. The improve-, ments are especially intended for application to metal Working devices arranged inj tandem for simultaneous operation upon suc cessive portions of a length of'stoc'k 'fed from one of suchdevices to another of the;

` same, but certain featuresof the inventionl speed of one mill, (due Jtolexternal causes or to hard 4spots in the metal or expansion oEl the rolls)` will be compensated for by varia-,

maybe used to advantage in other connec. tionst -I shall describe 'the invention as applied toa rolling mill installation but it will be apparent that in the broader aspects of the, invention, the character of the metal -worklf ing device or devices -and ofthe stock oper-i ated on thereby may be considerably varied. The cold rolling of flexible metalA stri shas: heretofore generally been connedf'to t e use"t of.. one rolling mill through which the strip is passed to reduce its thickness, A'and from; which the strip passes directly 'to the wind-; ing drum. There have recently been some`- attemptsto roll these strips by passing themf through two or vmore individually driven'i 'sets of rolls placed in 'tandem with each;

other, but this'tandem 'rolling 'has been unsatisfactory owing to the impossibility of' properly controlling 'the speeds Aof the re-` spective mills. 'In this method of rolling it mills in such a lnanner that variations of,

tions 'o' speed of theo'ther mill^or mills. Where the speed of themillsA is regulated by'y the operative by means of l manual control-v ling devioes associated with the prime movers of the respective mills, it is practicallyA impossible to meet the condition, and as a re- 5 sult, the distribution of the work of reduc# tion between the mills is very uneven, the tension of the stock passing 'from one mill i to another fiuctuateslconsiderably, and the Be it known that I, WILLIAM R. WEBSTER,

invention, therefore, is to provide improved One of the primary objects of the present I means for regulating automatically the rely.

ative speeds of'two or more rolling mills or g other Zmetal working devices 'arranged' in tandem so as to maintain a practically unirm tension in the stock betweenl the mills.

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stallation in which one of the rolling mills -or other `metal workingy devices is movable toward and away from the other by varia-l tions in the tension of the stock, and wherein this movement is utilized to control automatically the speed of a prime mover which drives one of the mills. Itis also proposed to furnish a metal worln'ng device which is bodily movable on its foundation and so arranged with respect to a speed controlling device .for a prime mover, that the speed of said prime mover will be varied in accordance with the tension of the stock acted on by said metal working device.

To these and other ends, the invention' consists in the `novel features and combina tions of parts to be 4hereinafter described and claimed. Ino the accompanying drawings, Figure l -installation embodying myl invention, Fig.2 is a similar view showing the mova'ble in another position, Fig. 3 is atopplan view of Fig. 1, and Fig. 4 is an end v1ew of Fig. 1. A Y

The rolling mill installation shown in the drawings, comprises a mill A and a mill B, individually driven and arranged tandem for simultaneous operation upon a `length of stock C such as a strip of brass or ot er metal.v The strip to be reduced passes fr m a holder D to the mill A, thence to the mill B and finally-to a Winder E. The mill A comprises a stand 5 having the usual rolls articularly, I aim to provide an in? is a diagrammatic side elevation of a rolling 6, 7 operated byan electricimotor 8 through B. lThe roll stand 9 of the mill B is iiXed on a foundation F, but the roll stand of.,

lent is not a material feature of the inven- .is equipped 'with wheels 15 and the track 14 is constituted by Aparallel rails for said wheels. e

The movable mill A is acted on'by means urging itaway from the mill B and tending to hold the platform 13 against stops 16. rllhis means may comprise a fluid pressure device H fixed on the foundation F and constituted by a cylinder 17 and a piston 18 which is subjected to the force of a pressure medium entering the cylinderv 17 by way of an inlet pipe 19. The piston 18 is rigidly connected with the platform 13 by means of the iston rod 20, and the mill A is con stant y urged toward the stops 16 by constant connection ofthe pressure cylinder 17 with a suitable source of pressure medium. The' stops 16, limit the movement of thejmill A away from the mill B and similar stops 21 limit the movement of the mill-A toward the mill B.

The motor 8 of the mill A has associated with it a rheostat 22 whereby the speed fof the motor is controlled. The rheostat 22 may be conveniently located on the foundation G alongside the track 14. Itis operated by a controller handle 23 having a.

fixed pivot 24 and coperating with the rheostat in the usual manner. The upper free endof the controller handle 23 is pivoted at 25 to one end 'of a link 26, theV opposite end of which is pivoted at 27 to a part of the mill A, such as one of the side frames of the Vroll stand 5. f

The operation ofthe installation is suhstantiyally as follows: The stri of metal to be reduced is assed from t e holder D through therol s 6 and 7 of the mill A and thence through the

rolls

10 and 11 of the mill B. When the mills-have been started the mill A will normally have a positionabout midway of the length of its track or guideway in which'positlon the ortion of the stock between said mill and t e mill Bl will be subjected to just the lright amount of tension for the eiiicient operation of they ations) the forcey exerted by the device H.

on the mill A will be overcome and the ten-v incassa sion ot the stock will be sufficient to pull the mill A toward the mill B. ln doing this the controller'handle 23 'of the rheostat 22 will be swung'on its pivot in an obvious manner, and the arrangement is such that this movement of the .controller handle will act to speed up the motor 8. Hence the mill A will feed in the metal faster than before, and this will eliminate at once the undue tension in the stock, such tension being decreased until it equals that of the balancing means H. On the other hand, if the tension in the stock decreases below the pushing effect of the balancing means H, the latter will act to move the mill A farther away from the mill B. A movementof the mill A in this last named direction will obviously move the controller handle 23 in a direction ,opposite to thatl first mentioned and as a consequence the speedeof the motor 8 will be decreased until the equilibrium between the pressure of the balancing means and ,the tension of the stock is again restored.

ltv will therefore beunderstood that both increases and decreases of tension in the stock between `the mills, above and below respectively the normal, are 'quickly eliminated in A an automatic manner so thatfor all practical vpurposes a ,constant tenslon in the intermediate portion of the stock is automatically maintained. A

-As soon as av length-of stock leaves thev mill A the device H will move said mill against the stops 16 and the mill will oper:`

ate at a greatlyv reduced speed as long as it is idle.- As soon as a new length of stock is 'fed into the mill A and thence into the mill IB, the relative speeds of the two sets of rolls is such that the mill B will rapidly crease the tension of the stock between the .mills and equalize it with the power of the balancing meansH, which will occur when the mill A reaches Aa position about midway of the'track 14.

Of course, the character of prime mover` employed and the speed controlling device therefore is immaterlal so far as the general .principles of the invention are concerned. Moreover,` it is not essential to employ a viiuid pressure device for vbalancing the mov-y able mill, nor to support the latter by means of -wheels or rollers, In the form shown,

Sboth devices -A andB'reduc'e as well as support the stock, but the reducing function of either A or'B may be omitted in some cases.

IMany modifications in these and other respects maybe .adopted without departing from the scope of my invention as delined in the claims. l

What I claim is:

1. The combination of` a metal working device adapted to act on a length of stock, a device spaced from said metal working device and supportin the stock acted on by the latter, one of sa1d devices being movable toward and away from the other, a prime mover'for driving one of said devices, and a speed adjusting means for said prime mover controlled automatically by the bodily movements of said movable device; substantially as described. j

2. The combination of a metal working" device adapted to act on a length vof stock, a device spaced from said metal working device and supporting the stock acted on bythe latter, a track on which one of said devices is movable toward and away from the other, a prime mover for driving oneof said devices, and a speed adjusting means for said prime mover controlled automatically by the bodily movements of said mov- Y able device; substantially as described.

device adapted to act on a length of stock, a device spaced from said metal working device and supporting the stock acted on; by the latter, a track on which one of said devices is movable toward' and away from the other, separate prime movers for the= -respective devices, and speed adjusting means for one of said prime movers controlled automatically by the bodily movemen-ts Iof said movable device; substantially as described.

4. The combination of' a metal working 1 device adapted to act onfa length of stock,

, a device spaced from said metal working device and supporting the stock acted on; b thev latter, one of said devices being movabile toward and away from the other, bala ancing means acting on the movable device, a prime mover for driving one of said devices, and speed adjusting means for said.-

Prime 'mover operatively Connected with* means spaced from said device to support` said movable device; substantially as Y de" scribed.

5. The combination of a power drivenl metal working device adapted to act on a'f length of stock, a power driven device spaced from said `metal working device and supporting the stock acted on by the latter, one of said devices being movable toward andi away from the other,and means for varying the working speed of one of said devices in e consonance with the bodily movements ofi said movable device; substantially as' de-i scribed.

6. The combination of' a power driven' metal working device adapted to actl on al length of stock, a power driven device spaced from said metal working device and supporting the stock'acted on by the latter,A one of saiddevices being movable Irelatively to the other, and means to decrease the working-.speed of one of said devices asl the distance between. said devices is in' 'creased andto increase such speed as the decreased device and supporting the stock acted 011A by the latter, one of said devices 'being movable toward and away from the other,

balancing means acting on the movable de vice, a prime mover for one of said devices, and means for increasing the speed of said pri-me mover as the distance between said devices is decreased and vice versa; substantially as described.

8. The combination ova Vmetal working device. adapted to act on a length of stock, a device spaced from said metal working device and supporting the stock emerging from the latter, a track on which one of said i ldevices is movable toward and away from 3. The comblnatlon of a metal workingsl the other, balancing means acting on `'the movable device, separate prime movers for the respective' devices', and speed adjusting means for one of said Iprime moverswhich speeds up said' ime mover automatically as the distance etween said devices is decreased and slows down said prime mover -as the distance between said devices is increased.; substantially as described.'

9. The combination with asuitable foundation, 'of a bodily movable power driven metal working device mountedi thereon and adapted to operate on a length of stock,

and .means to vary the working speedof said device automatically as the same moves relatively to said foundation; substantially as described. l Y.

10.I The combination with a suitable foundation, of a bodily movable power driven metal working device mounted thereon and adapted to operate on a length of stock,

the stock acted on by the latter, and means to vary the working speed'of said device automatically as the-same moves relatively =to said foundation; substantially as deiis fa 'lengthof stock, and means to vary the' working speed of said device automatically 'as the same moves along said track; substantially as described. j

12. The combination of metal working devices arranged in tandem, one of said devices being movable toward and away from the other, and means for automatically varying the working speed of one of said devices in consonance with the bodily movements of said movable device; substantially as described.

13. The combination of metal working devices' arranged in tandem, one of said deitc vices being movable toward and vaway from the other, separate prime movers for the respective devices, and speed adjusting means orone of' said prime movers controlled automatically as the tension inthe stock between said devices is varied; substantially as described.

14:. The combination of metal working devices arranged inv tandem to Iact simultaneously on successive. portions of an advancing length of stock, one of said devices being bodily movable toward and away from the other,J primemovers for the respective devices, and a speed adjusting' means for one of said prime movers actuated automatically to increase the speed as said movable device approaches the other device and to decrease the speed as said movable device moves in the opposite direction; substantially as described.

l5. The combination of metal working devices 4arranged in tandem for simultaneous operation on successive portions of an j advancing length of stock fedl Irom one of' said devices to the other, the device which rst receives the stock being movable toward and away from the second device, prime movers for the respective devices, and speed adjusting means for the prime mover of the first device actuated automatically to increase the speed ofysaid prime mover as said first -device moves toward the secondv and todecrease the speed as said rst device moves away from the second; substantially as described.

16. The combination of metal working devices arranged -n tandem, prime movers for the respective devices, a track on which one of said devices ismovable toward and away from the other, means normally holding said movable device in a definite position lengthwise lof said track, and speed adjusting means for onev of said prime movers .controlled automatically byi the :bodily movement of said movable device lengthwise of said track; substantiallyy asl described.

17. The combination of .rolling mills arranged in tandem, one of said mills being movablev toward and away from the other,

andmeans for automatically varying the rolling s eed of one .of said mills in consonance vwith the bodily movement of said movable mill; substantially as described.

'18. The combination of Irolling mills arranged in tandem, one of said mills being movable toward and away :from the other,

separate prime movers for the respective mills, and speedadjusting means for one of `said prime movers controlled automatically as the tensionin the stock between the mills j is varied; substantiallyas described.

incassa' `rately, and speed adjusting means for one of .said prime movers controlled automatically 'by the bodily movements of said rst mill; substantially as described.

l 20. The combination of rolling mills arranged in tandem, the first mill being movable bodily toward and 'awayy from the second, prime movers for driving the respective ,mills separately, and means for varying automatically the speed of the prime mover of said first millas the latter changes its position relatively to the second mill; substantially as described.

ranged in tandem, one of said mills being balancing means acting on the movable mill,

prime movers, and an operative connection etween sald speed. regulating device and 22. The combination of a metal working device, a track on which said device is bodily movable, a prime mover for driving said device, a speed regulating device for said yprime mover, and a connection between said speed regulating device and said metal work- :said track, 'balancing means acting on sald for said prime mover, and means to adjust saidspeed regulating device automatically as said mill movesl to and fro on said track; fsubstantially -as described.

i' 25. The combination of rolling millsarranged in tandem, one 'of said mills being imoyable toward yand away from the other, gan electric motorfor driving one of said mills, a rheostat for controlling the speed of ljtvveen said rheostat and said movable mill .whereby vthe speed'of said prime mover is ,increased as the movable mill-approaches the'xed mill; substantially as described.

4mill gmovable bodily on said track, an elec- `Qtric motor for driving'said mill, a `rheostat for said motor, and means for operating Said 2l. The combination of rolling mills ar-V bodily movable toward and away from the other, prime movers for the respective mil-ls;

a speed regulating device for4A one of said,

said movable mill; substantially as described..

24. The combination of a foundation hav-y ing a'track, a Yrolling mill bodily movable on @mill to hold it normally in a definite positionv Y lengthwise ofthe track, a prime mover fork. `driving said mill, a speed regulating device4 'said motor, and an operative connection be L v26. The combination of a track, a rolling rheostat ,automatically as the mill moves 'alongthe track; substantially as described.

27. The combinationI of a track, a platform movable along said track, -a metal -ranged in tandem, a platform on which one working device on said platform, an electric motor for said device llkewlsey mounted on said platform, a rheostat for said motor fixed relatively to said track, ando erative metal means. of connection between sai Working device and said rheostat;I substantially as described.

28. The combination of rolling mills arof said mills is supported, a track on which for t e movable mill, carried by said platform, and means' 'to increase the speed of 15 said' motor automatically as the movable mill approaches the fixed mill; substantially as described. l

In Witness whereof, I have hereunto set my hand on theth day of March, 1918.

WILLIAM R. WEBSTER. Witnesses:

M. C. REED, F. SMITH.

said platform is movable, an Yelectric motor