US946795A

US946795A - Rolling-mill.

Info

Publication number: US946795A
Application number: US48170209A
Authority: US
Inventors: Joseph Fawell
Original assignee: Individual
Current assignee: Individual
Priority date: 1909-03-06
Filing date: 1909-03-06
Publication date: 1910-01-18
Anticipated expiration: 1927-01-18

Description

J. FAWELL.

ROLLING MILL.

APPLICATION FILED MAR. e, 1909.

946,795 Patented Jan. 18,1910.

WITNESSES:

' JOSEPH .FAWELL, OF PITTSBURG, PENNSYLVANIA.

ROLLING-MILL.

Specification of Letters Patent.

Patented Jan. 18, 1910.

I Application filed March 6. 1909. Serial No. 481,702.

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 improvements the following is a specification.

The invention described herein relates to certain improvements in rolling mills, and has for its object a construction of mill and .feed mechanism whereby two adjacent stands of rolls forming the mill are arranged in line and can be operated continuously without reversal, the rollsof one stand rotating to feed the article operated on in one direction away from. the other stand,-and those of the other stand also rotating continuously to feed the article in the opposite direction away from the first stand, thus avoiding the employment of reversing engines for operating the rolls.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings forming a part of this specification, my improved mill is shown partly in section and partly in e1e vation.

In the practice of my invention the

rolls

1 and 1 and 2 and 2 are suitably mounted, preferably in one housing, in order that the rolls may always be maintained in desired relation to each other. The lower rolls 1 and- 2 are stationary as against vertical movement, while the upper rolls are adapted to be raised and lowered by any suitable means known in the art, not only for the purpose of bringing them into proper operative relation to their companion lower rolls, but also for removing them sufiiciently 'far from the lower rolls as to permit of the passage of an article between them without reduction. As the. lower rolls of the two stands will rotate in opposite directions, it is evident that when an article is being subj ected to a reducing pass in one pair of rolls as 1, 1*, the lower rolls of the other pass will tend to resist the movementof the article if the latter is allowed to be in contact therewith during such reduction. In order to feed the article to the rolls, feed tables 3 and l are arranged on opposite sides of the mill and extend in opposite directions from points adjacent to the stands of rolls. These feed tables are provided with positively driven rollers. which can be reversed in rotationas required, sons to move the artlcle being reduced toward and fronrthe rolls. ,'These tables are made movable so that in one position an article carried thereby will be raised slightly above the uppermost point of the adjacent lower roll, and the article can pass roll operating through the article being rolled. In other words in the referred construction the tables will be yieldingly held or supported in a position where a line tangential to the upper portions of their rollers will pass slightly above the upper portion of the adjacent lower roll.v While any suitable means may be employed for thus supporting the feed tables, it is preferred that these tables should be pivotally mounted at their outer ends or stands (3, and that their inner ends should be connected by links 9, 9 to arms 10, 10 on rock shafts 11, 11 These rock shafts are provided with arms 12, 12*, which are connected to the pistons 12 of the fluid pressure cylinders 13. These cylinders are connected to accumulators or any suitable source of fluid pressure, as will exert the desired lifting force on the inner ends of the tables.

In describing the operation of this mill, it will be understood that the ingot is passing from the table 4 and is to be reduced by the stand of rolls 1, l and must therefore be fed between the stand of

rolls

2, 2 ,'which are therefore separated a sufiicientdistance to permit the free passage of the ingot or billet. As before stated sufiicient pressure is constantly exerted in the cylinders 13 to raise the tables to such position that the article fed thereby will pass above the

lower rolls

1, 1 The roll 1 being screwed down to effect a reduction of the ingot or billet, the table 3 will be depressed by the billet as it passes through the rolls 1 1 so as to permit the lower roll 1 to operate on the billet. As soon as the billet has passed throu h the rolls 1, I both tables will rise and for the reverse pass the rollers of both tables will be reversed, the roll 1 will be raised so that onthe back pass no reduction will be effected'by the

rolls

1, 1 and the roll 2 will be screwed down to effect the desired reduction during this back pass. When the billet passes through the

rolls

2, 2 it will come in contact with the first roller of the table and force the latter down so as to permit the I operation of both rolls.

As the distance between the lower rolls of two stands is considerable, it is desirable inorder that short pieces can be rolled, to interpose a feed roller 14 between such lower rolls. This feed roller is also. normally supported by fluid pressure or other suitable means in a position to hold the billet out of contact with the non-operative lower roll but can be forced down sufliciently to permit the operation of the reducing rolls.

I claim herein as my invention:

1. In a rolling millthe combination of two stands of non-reversible two-high rolls arranged intandem, the rolls of one stand being driven in'one direction and those of the other stand in the opposite direction, means for adjusting the upper rolls of each stand, reversible feed mechanism extending outwardly from points adjacent to the respective rolls, and means for moving the portions of the feed mechanism adjacent to the rolls transversely of a horizontal plane tangential to the highest part of the adjaspective stands of rolls, means ,for nor mally holding said feed mechanism above a horizontal lane tangential or a proximately so to the highest part of the a jacent lower roll, and meansfor moving said tables be low such plane.

3. In a rolling mill, the combination of two stands of non-reversible two-high rolls arranged in tandem, the rolls of one stand being rotated to feed an ingot bloom between the rolls of the other stand, means for adjusting the upper rolls of each stand, reversib e feed mechanism extending outwardly from points ad'acent to the respec tive stands of rolls, and,yielding means for holding said feed mechanism above a horizontal plane tangential or approximately so tonthe highest part of the adjacent lower ro 4. In a rolling mill the -combination of. two stands of non-reversible two-high rolls arranged in tandem, the rolls of one stand being driven in one direction and those of the other stand in. the opposite direction,

means for adjusting the upper rolls of each stand, reversible feed mechanism extending outwardly from points adjacent to the respective rolls, means for moving the portions of the feed mechanism adjacent to the,

rolls transversely of a horizontal plane tangential to the highest part of the adjacent lower roll, and a roller arranged intermediate of the two stands of rolls and yieldingly held with its highest portion above a horizontal plane tangential to the highest part of the lower rolls.

5. In a rolling mill the combination of two stands of non-reversible two-high rolls arrangd in tandem, the rolls of one stand being rotated to feed an ingot bloom between the rolls of the other stand, means for adjusting the upper rolls of each stand, reversible feed mechanism extending'out- 'wardly from points adjacent to the respective stands of rolls, yieldin means for holding said feed mechanism a ovea horizontal plane tangential or approximately so to the highest part of the adjacent lower roll, and a roller arranged intermediate of the two stands of rolls and yieldingly held with its highest part above a horizontal plane tangential to the highest part of the lower rolls. 6. In a rolling mill the combination of two stands of non-reversible two-high rollers arranged in tandem, the rolls of one stand being driven in one direction and those of the other stand in the opposite direction, means for ad'usting the upper roll to each stand, reversi le feed mechanism extending outwardly from points adjacent to the respective parts of rolls, and means for movin the tables transversely of a plane tangential to the part of the adjacent lower roll.

In testimony whereof, I have hereunto set my hand.

JosEPH FAWELL. Witnesses Anion A. TBILL, FRANCIS J. TOMASSON.