US974559A - Rolling-mill. - Google Patents

Description

J. FAWELL.

- ROLLING MILL.

APPLICATION FILED JUNE 27, 1908.

974,559. Patented Nov. 1, 1910.

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J. FAWELL.

ROLLING MILL.

APPLICATION FILED JUNE 21, 1908.

' Patented Nov. 1, 1910;

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6 yvsgian 1 m J. FAWELL.

ROLLING MILL.

APPLICATION FILED JUNE 27, 1908. 974,559, Patented Nov. 1, 1910.

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I J. FAWELL.

' ila ROLLING MILL.

Hii I i ll 1 APPLICATION FILED JUNE 2 7, 1908.

Patented Nov.1, 1910.

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WITNESSES:

NNNNNN OH JOSEPH FAWELL, OF PITTSBURG, PENNSYLVANIA.

ROLLING-MILL.

Specification of Letters Patent.

Patented Nov. 1, 1910.

Application filed June 27, 1908. Serial No. 440,646.

To all whom it may concern:

Be it known that I, JOSEPH FAWELL, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, a citizen of the United States, have invented or discovered certain new and useful Improvements in Rolling-Mills, of which improvement the following is a specification.

The invention described herein has for its object a mill consisting of two stands of horizontal rolls arranged in tandem or in a common line of feed, means for normally rotating one pair of rolls in a reverse direction from that of the other pair of rolls means for relatively separating the rolls 0 each stand and reversible feed mechanism whereby an article may be received from one and delivered in a reverse direction to the other stand of rolls.

The invention further consists in combining with such a mill positively driven vertical rolls arranged in operative relation to the horizontal rolls.

In the accompanying drawings forming a part of this specification Figure l is a top plan view of a mill embodying my improvements; Fig. 2 is a plan view partly in section of a modification of the mill shown in Fig. 1; Fig. 3- is a sectional elevation of my improved mill; Figs. 4 and 5 are views respectively similar to Figs. 1 and 3 illustrating another modification of m improvement; Fi 6 shows in elevation t e arrangement of 51c horizontal rolls and the manner of driving the same in the mills shown in Figs. 4 and 5; Fig. 7 is a diagrammatic view illustrating the operation of the mill shown in Figs. 4 and 5; Fig. 8 is a sectional plan view lllustrating a modification of the mill shown in Fig. 4; Figs. 9 and 10 show a plan and an end elevation of a further modification of my improved mill.

In the practice of my invention, as shown in Figs. 1 and 3 the mill comprises two stands of horizontal rolls 1 and 1 and 2 and 2*, and vertical rolls 3 and 3, preferably arranged intermediate of the two stands of horizontal rolls. Suitable means as the screws 4 and 5 or other suitable known mechanisms, are provided for adjusting the upper rections, so that the rolls of the two stands will revolve normally in opposite directions.

The vertical rolls have their journal boxes 10 and 11 mounted in suitable horizontal guide bars 12 and 13, and these rolls are adjusted toward and from each other by any suitable means such for example as that shown and described in Letters Patent No. 382,035, dated May 1st, 1888. The vertical rolls are positively driven either constantly in the same direction or alternately in opposite directions. The rotation of the vertical rolls can be effected from the same motor employed for driving the horizontal rolls, as shown and described in an application by me dated June 27th, 1908, but preferably b an independent motor 14, connected to the rivin shaft 15. It is referred that the vertica rolls should be riven from the top and hence the shaft 15 is arranged above the vertical rolls, and its pinions 16 intermesh with pinions 17 on the upper journals of the vertical rolls. Provision is made for the movement of the pinions 16 along the shaft 15, the construction shown and described in Letters Patent No. 382,035 being suitable for that purpose.

Feed tables A and B are arranged respectively on opposite sides of the mill and the feed rollers 18 of these tables are connected b' suitable gearing to suitable reversible riving' mechanism 19, in order that the article may be fed back and forth through the mill. As in rolling some articles reduction by the vertical rolls is not desired, feed rollers 20 and 21 are arranged intermediate of the horizontal rolls. Preferably the rollers 20 are arranged between one pair of horizontal rolls and the vertical rolls, while the rollers 21 are arranged between the latter and the other stand of horizontal rolls. These rollers 20 and 21 are preferably positively driven synchronously with the rollers of the feed tables and in the same direction. Its flexibility of operation is a distinguishing characteristic of my improved mill. As for example, supposing that the article is deposited on the table A, in the first pass reduction can be effected by means of the rolls 1 and 1 and the vertical rolls 3 if desired, the rolls 2 2 being adjusted apart so as not to effect any reduction in this pass. In the back pass the rolls 2 2 are adjusted so as to effect reduction, the rolls 1 1 are moved apart so as not to operate on the article, while the vertical rolls may be adjusted to efiect reduction or not as desired. It will be understood of course that during the forward pass from the table A to the table B, the'feed rollers of the two tables and also those intermediate of the horizontal rolls will be driven in one direction, 2'. e. in the direction of rotation of the rolls 1 1. During the back pass 2'. e. from table B to table A, these rollers are reversed and caused to rotate in thedirection of rotion of the roll 2, 2

As hereinbefore stated the vertical rolls, if itbe desired to employ them in both the forward and back passes, are reversed by reversing their motor which, as heretofore stated, may be reversible or if it be pre ferred to avoid the use of a reversible roll, a third roll 3 may be arranged between the vertical rolls 3 and 3 in the manner shown in Fig. 1. This intermediate ro'll can be mounted and shifted back and forth as shown and described in Letters-Patent No. 382,035. By shifting this third or intermediate roll 3 into contact alternately with the main vertical rolls, reduction can be ef fected at each pass of the article without reversing the main rolls 3 and 3 It is characteristic of the construction of mill shown in Figs. 1, 2 and 3 that reduction can be effected inevery pass by a pair of horizontal rolls and also if desired by the vertical rolls and that without reversing-the direction of rotation of any of the reducing rolls provided an intermediate. vertical roll be employed. But for each pass the feed mechanism is reversed. As will be readily seen by those skilled in the art, when an article is being reduced, that the lower roll of the then non-operating pair of horizontal rolls will tend by reason of its rotation in a direction opposite that of the movement of the article at this time, to prevent the latter from sufiicient movement, as to the right in Fig. 3, that its rear end will pass beyond such temporarily nonoperating rolls as is necessary for the proper reduction or opera tion of said rolls in the next or back pass,.as to the left in Fig. 3. To render certain the movement of the article to a position where its rear end will be entirely beyond the rolls, as 2 2, several means can be employed, such for example as that shown in Fig. 3, or the construction shown in Figs. 4, 5 and 6. In a mill employing two high horizontal rolls, as shown in Figs. 1, 2, and 3, an interference of the lower roll of the temporarily non-reducing pair, with the movement of the article to operative position for the next pass can be prevented by so changing the normal relative positions of the feed table and lower roll that the latter will be out of contact with an article moving along the feed table and restoring said parts to operative positions when reduction is desired- In Fig. 3 is shown a means for adjusting the lower roll to and from operative position consisting of right and left hand screws 27 provided with 2 2 are driven in the same direction. This rotation of the rolls 1 1 and 2 2 is preferably effected by the interposition of a driven pinion between the pairs of pinions 6 and 7, as shown in Fig. 6. The intermediate rolls 1 and 2 are driven by motors C and D which are reversible. The upper rolls 1 and 2 are adjustable by any suitable means,

such for example as the screws 4 and 5 and the intermediate rolls are adjustable toward and from the lower rolls of each pair by any suitable mechanism such for example as that shown consisting of fluid pressure cylinders 23 and rods 24 extending from the ram of said cylinders to the journal blocks 25 of the intermediate rolls as shown in Fig. 5.

Inthe operation of this mill when the article is moving to the right in Figs. 5 and 7, theintermediate roll 1 is adjusted down so as to be in frictional contact with the lower roll 1, and may be so driven by its motor C that the latter will assist in the ro tation effected mainly by the lower. roll, or the motor 0 D may be disconnected from the intermediate rolls during a reducing pass, by shifting the clutches 26 shown in Fig. 4. The vertical rolls which may be two or three as shown in Figs. at and S, are adjusted and operated to eifect a reduction during this pass if desired, while in the other stand of horizontal rolls the upper roll is adjusted up so as to have no reducing action and the intermediate roll 2 is raised out of contact with the lower roll 2, and is rotated by its motor in a direction corresponding with the direction of rotation of the feed rollers during this pass as shown in Fig. 5., During the back pass the intermediate roller 2 is lowered into contact with the lower roll 2 and its direction of rotation reversed both by its motor and by frictional contact with the lower roll the clutch 26 may be shifted to disconnect the roll from the motor. .The upperroll 1 is raised to in operative position and the intermediate roll l raised out of contact with the lower roll 1 and its direction of rotation also reversed so as to move in the same direction with the feed rollers during this pass as shown in those skilled in the art, the intermediate rolls 1 and 2* as they will always rotate in the direction of rotation of the feed rollers, may be driven from the same shafting or the same motor as the feed rollers in lieu-of employing inde endent motors for this purpose, especial y, as the lower rolls are mainly be two high, as shown in Figs. 1, 2, 3, 9

and 10 or three high rolls, as shown in Figs. 4 and 5. When using two high stands, the rolls of one pair are rotated in a reverse direction to the other pair, as heretofore described, and the rolls inoperative in one pass 'are adjusted so as to have no material action on the. article, as heretofore described.

The feed mechanism is reversible after each ass.

p When using three hi h stands of'horizontal rolls, reduction is e ected alternately by each stand. In one pass the several hOIlzontal rolls are adjusted to the positions 1 shown in Fig. 5, while in the next pass the rolls will have the position shown in Fig. 7.

It will be understood that the vertical rolls, when used may be arranged in any desired operative relation to the horizontal rolls, and that the mill may be operative so that the article may be reduced and then edged or edged and then .reduced or the edging may be omitted.

I claim herein as my invention 1. In. a rolling mill the combination of two stands of horizontal rolls, means for constantly driving the. rolls of such stands in such direction that the rolls of one stand will feed the article during reduction tofxwardthe other stand, means for lowering .and raising the lowerrolls, a stand of vertical rolls arranged in operative relation to the stands ofhorizontal rollsand positively driven and operative in; both directions, and reversible mechanism for feeding the article back and forth through the rolls. 7

2. In a rolling mill the combination of two stands of horizontal rolls, means for constantly drivin the rolls of such stands in such direction t atrolls of one stand willfeed the article during reduction toward the other stand, means for lowering and raising the lower rolls, a. stand of vertical rolls arranged in operative relation to the stands of horizontal rolls means for positively rotatin the vertical rolls and reversible 3. In a rolling mill the combination of vtwo stands of three high rolls, means for positively rotating the outer rolls of" each stand in the same direction but reversely to the direction of rotation of the outer rolls 'erence'to another so as to of the other stand, means for shifting one of the outer rolls and the intermediate roll of each stand relative to the other outer roll, and reversible mechanism for feeding the article back and forth through the rolls.

4. Inv a rolling mill the combination of two stands of three high rolls, means for positively rotating the outer rolls of each in the same direction but reversely to the direction of rotation of the outer rolls of the other stand, means for shifting an outer roll and the intermediate roll of each stand relative to the other outer roll, reversible feed mechanism and means for rotating the intermediate roll in the direction of feed of the feed mechanism,

5. In a rollin mill the combination of two stands of t ree high rolls, means for positively rotating the outer rolls of each stand in the same direction but reversely to the direction of rotation. of the outer rolls 7 of the other stand means for shifting an outer roll and the intermediate roll of each stand relative to the other outer roll, a stand of vertical r'olls arranged in operative relation to the stands of horizontal rollsi .of vertical rolls arranged in o eratlve'relation to the stands of horizonta rolls, means for rotating the intermediate rolls in the direction of feed of the feed mechanism and reversiLl's mechanism for feeding the article back and forth.

7. In a rolling for adjusting one roll of each stand relative to. the other r011, an intermediate roll for each stand normally in driving contact with the'lower roll of said stand, means for moving one of the rolls of each stand with refermit of the independent rotation of the intermediate roll, and non-reversible means for driving the outer rolls of each stand.

8. In a rolling mill the combination of two horizontal rolls, means for adjusting one roll relative to the other roll, an intermediate roll normally in driving contact with one of the outer rolls, means for moving, the rolls to permit of the independent rotation of the intermediate roll, non-reversible means for driving the outer rolls, and means for rotating the intermediate roll when out of drivin contact with the other rolls reversely to e direction -of rotation mill the combination of two stands having horizontal rolls, means imparted'to it when-in contact with one of theother rolls.

9. In a rolling mill, the combination of two stands of horizontal rolls, each standv comprisingnpperand lower rolls and an intermediate roll normally in contact withthe lower roll and means for causing separation of the intermediate roll from the lower roll a distance which will permit the intermediate roll to rotate both in the same and opposite direction to thatin which the lowerroll rotates, said stands of rolls so arranged that the work piec'eb'eing operated upon by theupper and intermediate rolls ofv one stand can pass between the upper and 15 intermediate rolls of the other stand.

In testimony whereof, I have hereunto

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