US2787176A

US2787176A - Edge roll device

Info

Publication number: US2787176A
Application number: US339794A
Authority: US
Inventors: Smith Arthur Dean
Original assignee: Kaiser Aluminum and Chemical Corp
Current assignee: Kaiser Aluminum and Chemical Corp
Priority date: 1953-03-02
Filing date: 1953-03-02
Publication date: 1957-04-02
Anticipated expiration: 1974-04-02

Description

. Apri'l 2, 1957 A. DQsMl'rH EDGE ROLL DEVICE 5 Sheets-Sheet Jl I (9 H ik IN VFJV TOR ADE-5N SMITH u A Filed March 2, 1953 vllllllL BTTORNBY April 2, 1957 A. D. sMlTH 2,787,176

EDGE ROLL DEVICE Filed March 2, 1953' 3 Sheets-Sheet 2 INVENToRz. ADEAN SMITH ATTORNEY .n 0PM 5 Shee'ts-Sheet I5 A. D. sMlrH EDGE: ROLL DEVICE April 2, 1957 Filed March 2, 1953 KMUDHA ko MQ@ ma mono ok.

HHHWOnFM IN'V'ENTOR. il BEEN SMIT ATTORNEY United States Patent O EDGE ROLL DEVICE Arthur Dean Smith, San Lorenzo, Calif., assignor t Kaiser Aluminum & Chemical Corporation, Oakland, Calif., a corporation of Delaware Application March 2, 1953, Serial No. 339,794

17 Claims. (Cl. 80-31.1)

This invention relates to rolling mill devices. More particularly it is concerned with a vertical edging mill, which may be used to roll the side edges of metallic ingots or slabs prior to their entry into a main stand of horizontally mounted rolls in a rolling mill and the providing of novel means for operating and actuating the edge rolls of the edging mill.

In normal rolling mill operations, it is customary to lirst roll the side edges of the metallic ingots or slabs prior to their entry into the main stand of horizontally mounted rolls of a mill by means of edge rolls. These edge rolls are mounted on a vertical axis and they are located adjacent the forward or entry end of this main stand of horizontally mounted rolls. In the conventional method of operating these edge rolls it is customary to employ a set of rotatable screws mounted on a horizontal axis and connectable to the housings for the rolls. When these rotatable screws are turned they will thus bring the vertically mounted edge rolls toward or away from one another so that the distance therebetween may be adjusted depending upon the width of the ingot or slab being rolled by the edge rolls.

However, since it is necessary in some instances to broadside an ingot to the main stand of horizontally mounted rolls in the mill, i. e., to turn the ingot around sideways and then roll it to various widths on the main mill, it is also necessary to be able to operate the edge rolls with exceptional speed commensurate with the high speed at which the main mill operates. In other words, in rolling a metallic ingot or billet it is sometimes desirable to iirst edge roll the ingot or slab lengthwise prior to its entry into the main stand of the mill. After the ingot or slab has been edge rolled lengthwise both forward and backward, it is then necessary in order to present the ingot broadside to the mill for the edge rolls to be separated or moved apart a greater distance than that required during the period the ingot was rst edge rolled lengthwise so that the ingot may then pass sideways freely between the edge rolls to the rolls of the main stand of the mill and to be able to do the same at high speeds.

The conventional screw mechanisms which have been heretofore employed for operating these edge rolls are not capable of moving the edge rolls quickly or of separating or moving the edge rolls apart at the speed with which it has been broadsided by the supporting rolls of the mill table. The reason for this is primarily because of the fact that from the point of View of design it is impractical to make screws large enough to handle the loads imposed by edging mills thereon and yet operate at high speeds.

By the apparatus of the instant invention, however, it is possible to operate the edge rolls and move them backward and forward or toward or away from one another with exceptionally high speed and at those speeds which are required in order to tirst edge roll the longitudinal edges of the ingot and thereafter to open the edge rolls the additional amount necessary for the ingot to be passed therebetween and supplied broadside to the main 2,7811 76 Patented Apr. 2, 1957 mill stand in a manner consistent with the high speeds at which the horizontal rolls of the main mill operate.

This is accomplished generally by providing in an edge rolling device the combination of a plurality of laterally movable cooperating chuck elements. Edge rolls are vertically mounted within each ol these chuck elements whereby when the chuck elements are moved in unison alternately toward and `away from one another, the edge rolls will likewise in turn be moved laterally toward or away from one another. A primary hydraulic cylinder and piston is lused for actuating each of these chuck elements and for alternately moving these chuck elements and in turn the edge rolls laterally toward and away from one another.

Secondary cylinders and pistons are also connected to each of the chuck elements and they operate to lock the chuck elements and the edge rolls against further lateral movement once they have been moved to a fixed rolling position at a predetermined distance apart. Means are also provided for initially adjusting the stroke of the primary pistons in their associated cylinders as well as means for retarding the dow of fluid into and out of the primary cylinders at the ends of the strokes of the pistons therein so as to dampen the thrust of the pistons at the end of each stroke thereof.

In addition, it is also contemplated that surge valves or analogous elements be used for operating the secondary pistons and cylinders which act to loci; the chuck elements and edge rolls against lateral movement once they have been moved to their fixed rolling positions.

Accordingly, it is an object of this invention to provide an edging mill device having novel means for quickly and efciently moving the edge rolls of the mill toward or away from one another.

It is a further object of this invention to provide an edging mill device wherein novel means are used for operating the edge rolls of the mill so as to move them toward or away from one another, together with novel means for locking the edge rolls in a fixed rolling position once they have been moved to within a predetermined distance of one another.

It is another object of this invention to provide an edging mill device wherein novel means are employed for locking the edge rolls of the mill in a xed position after they have been moved to within a predetermined distance of one another.

it is another object of this invention to provide an edging mill device wherein novel piston and cylinder means are used for moving the edge rolls toward and away from one another together with novel means for adjusting or regulating the stroke of the piston within its associated cylinder prior to the actuation thereof for bringing the edge rolls toward or away from one another. i lt is a further object of this invention to provide a novel edge rolling device wherein hydraulically operated locking means including surge valves are used for locking the edge rolls of the device in position once they have been moved to within a predetermined distance of one another.

It is another object of this invention to provide novel means for damping the thrust of the piston and cyl- Figure 2 is a side elevational view partially in section of the edging mill device shown in Figure l;

Figure 3 is a sectional View of the novel overall ,hydraulic control apparatus for actuating the edge rolls of the edging mill device and for locking the rolls in a fixed position once they have been moved to within a predetermined distance of one another including a schematic diagram of a suitable hydraulic system that may be used for operating this control apparatus;

Figure 4 is an enlarged side elevational view partially in section of the piston of the primary control cylinder together with the means for adjusting its stroke within the cylinder; and

Figure 5 is a sectional view of one type of surge valve that may be vused with each of the locking or secondary cylinders and pistons.

With further reference to the drawings and particularly Figures l and 2, the edge rolling device of the instant invention is generally comprised of a suitable frame l, which is mounted yupon the door of a rolling mill adjacent to the main mill stand of horizontal rolls in the rolling mill. This frame includes a pair of upright primary

standard members

2 and 2 located a predetermined distance apart as indicated more particularly in Figure l. A plurality of bridging members 3 and d are also used to tie standards 2 and together and to bridge the gap therebetween. Members 3 and d also serve as horizontal guide or rail members for the carriage elements '7 and 8 which are mounted thereon.

A secondary standard member 5 is located on the top of standard 2 while a bracket member 6 is in turn fixed to the top of the opposite standard 2. Standard 5 and bracket 6 are both rigidly mounted on their respective standards. Also disposed between the

standards

2 and 2 arethe carriage elements 7 and S. A chuck member 9 is dependingly attached to the lower portion of carriage 7 and chuck member 1li is dependingly attached to the lower portion of carriage d in a manner well known in the art. Rotatably mounted in the chuck members 9' and 10 are the vertical edge rolls lll and ft2. Each of these edge rolls ,is mounted in its respective chuck member in such a way that its axis is disposed in a vertical plane.

The various carriage members 7 and 8 also serve as housings for the several gears and shafts by .means of which the two edge rolls 1l and 12 are ultimately attached to a source of power so that these edge rolls may be positively driven.

The various gears and shafts, which may be disposed in a .conventional manner within the housings 7 land .8 can be ultimately driven by the main drive shaft 3.3 4connected to .a suitable source of power, when drive shaft ,13 is suitably coupled .to the splined secondary drive shaft and guide 14 which also connects the two carriage .and housing members 7 and t3. ln this way also the carriages 7 Iand 8 may be moved on the rails 3 and and along the splined shaft Std toward or away from .one another without in any way interrupting the rotation of the main drive shaft 13 'and the shaft iid which in turn directly controls the gears and othershafts, which drive the edge rolls 11 and l2.

Suitably disposed within the bottom portion of the framework 1 are a plurality of idler rolls l5 journaled in a framework ld located approximately in the central lower portion of the edge rolling or verticalmilldevice. These rolls serve as the main supporting surfacezfor the ingot or slab as it is edge rolled by rolls lt and l2. In addition, other idler rolls 17 and 1S, which also serve as supportingsurfaces, are also disposed at the exitsand entry end of the vertical edging mill.

Also disposed intermediate the carriages 7 and S aty the upper portion of the edging mill and between the -guicle ways or bridging members 3 and 4l is a separating lor spacerplate 19. Attached to the upper portion of this plate 19 is a U-shaped holder or bracket Ztl to which'the collar members 21 and 22 are attached. The splined 4 shaft 14 yis inserted within each of the two collar members 21 and 22 and has located thereon the ribbed roller 23 which is disposed in turn inbetween the two collars 21 and 22.

This plate 19 together with collar members 2l and 22 serve as stop elements for the carriages 7 and 9 and serve to limit the distance 'that they together with the roll 11 and 12 may be moved toward one another at the center of the vertical edging mill.

The lvarious elements of the device thus far described are all of conventional design. vThe novel control apparatus for actuating the .chuck members 9 and 10 and the edging rolls 11 and 12 associated therewi'thwill now be described. Since identical control devices are used for operating each chuck element and edge roll at either side of the mill, a description of one of the control devices will suffice lfor both.

Each control apparatus includes generally the housing 25 for the primary cylinder 26 and the piston 2/ which is adapted to reciprocate therein. The cylinder 26 is directly attached to a chuck element 10 or 11 since it is rigidly mounted within the housing 25 which in turn is rigidly attached to a chuck element.

Accordingly, upon theoperation ofthe pistons 27 within the cylinders 26, each of the chuck members can be moved toward yor away from one another and they in turn will move the edge rolls toward or away Vfrom one another. 'In addition, the pistons 27 for each side of the mill are both adapted to operate in unison so that the movements of the rolls fl `and 12 Vwill be synchronized one with the other.

As indicated more particularly in Figure 4, each of the pistons 27 includes 'a piston head 29 and a hollow interiorlythreaded'piston rod 30 attached thereto. Aflixed to the one `extremity of the piston nod Sil which is furthest removed from the ypiston head 29 is a cam element 3i the function of'which will be described later. Rotata'oly mounted within the hollow interiorly threaded bore 32 of the rod 30 is a threaded shaft 33. The free end of shaft 33 is rotatably mounted within a ball race 34, located inthebearing member 35., which in turn is aixed directly to the 'frame member 1 by suitable means (not shown). ln addition to the threaded lportieri 33', shaft 33 may alsobe provided with the intermediate threaded portion 13610 which maybe applied one or

more locking nuts

37 and 38 for 'fixing the position of the threaded shaft '33 relative -to lthe bearing member 35. Shaft is ultimately coupled ,to :the electric motor'39 by means of the coupling member 40 and shaft d1, motor 39 being `of a reversible type. Itis understood of course that each of 'the primary vpistons A27 are constructed in the aforesaid manner. Accordingly, when the motors 39 are simultaneously operated so also will be the shafts Thus if the screws or threaded shafts 33 are rotated in one direction they will pull the piston rods 27 out of their cylinders. If the screws 33 are rotated in the opposite direction .they will push the piston rods into their cylinders `and fluid will flow fromone side or the IVotherin the cylinders 2,6 to .obviate any voids in the cylinders. During the ,time the `screws 33 are rotated by motors 39, eachof the cam elements 31 will be made to travel upon the movement of ithe piston rod 3l) between a pair of

guides

42 and 43 best Shown inFigure .4. By riding'in these restrainingY guides 42 and 43 each small wing-like projection or cam element '31 will thus prevent thepiston rod 30 from turning as vtheir screws or threaded shafts 33 arerotated and the pistonrodsare move'dbackwards orforwards withinrthe cylinders 26.

In this way, a simple means lis provided foradjusting cachrpistonZ'l within its cylinder-26 initially and before the actuation 'thereof f'bya suitable `hydraulic system to be described'later. Thus, the edge rollscan be preset for the distance they are'to travel towardone another in accordance-With theparticular width of the ingot or billet which is to be edge rolled.

y Disposed on either side of the housing for cylinder 26 and piston 27 are the locking or secondary cylinders and pistons Slt and 51, 52 and 53, with the pistons 51 and 53 being rigidly affixed to a chuck element and with cylinders and 52 being rigidly affixed to the frame ll. These locking cylinders and pistons are used to put a hydraulic lock upon the individual chuck element associated therewith when these chuck elements have been moved together with the edge rolls toward one another to a predetermined edge rolling position by the primary actuating cylinder and

piston

26 and 27.

Also attached to the head end of each of the cylinders 26 is another cam element 54, the function of which will be described later. The arrangement of a suitable hydraulic system for operating the primary and secondary cylinder and piston means will now be described.

By referring to Figure 3 it will be observed that a suitable hydraulic system will include a plurality of pumps 5S and 59 driven by a motor 6d. Motor 6d is mounted upon a tank 61 from which the pumps 5d and 59 draw .liquid through the lines 62 and 63 and through their respective intake ports. Pump 58 is connected by line 64 to a four-way valve 65 and pump 59 is connected through the medium of a line o6 with a similarly constructed four-way valve 67. Also disposed in the lines 6d and 66 are the relief valves 68 and 6g. These in turn are also directly connected to one another' by line 7@ which ultimately leads back to the tank di.. Each of these

valves

65 and 67 is used for actuating a primary cylinder and

piston

26 and 27 connected to a chuck element l0- cated at opposite sides of the edging mill. Consequently, a description of the operation and function of the valve 67 will also suffice for the operation and function of the valve o5.

Connected to line 66

intermediate valve

69 and 67 is a line 7d which leads to the rod end of the cylinder 26. Also disposed and connected to line 7d is a decelerating valve 71 which is adapted to be actuated by the cam element 31 attached to the piston rod 27 in the manner to be described later. A line 72 is used to connect the head end of the cylinder 2d with valve e7. Disposed within line 72 is another decelerating valve 73 which is adapted to be operated by the cam element 5d rigidly attached to the casing Z6' of cylinder 26 in the manner to be described later.

Valve 67 which is a solenoid operated valve, has one of the outlet ports thereof plugged, namely, port 74. This valve also is provided with a main pressure port 15,

a main exhaust port 76 connected to tank 6l by line 72', y,

and a secondary outlet port 77.

The other portion of the hydraulic system or circuit connects the cylinders 5d and 52 with a tank di) through the medium of the surge valves 82 and till attached to the cylinders Si) and 52 respectively. Each ofthese surge valves is similarly constructed, and each is provided with an exhaust port S3 by means of which the Valve is directly connected to the cylinder 5@ or 52. The valve is also provided with a port 34.- which is adapted to be opened and closed by a piston 35 as it is moved up and down Within the surge valve assembly. in order to operate piston 85, the upper portion of the valve assembly is provided with a piston head S6 which is adapted to move within the opening 87 in the housing 88 attached to the surge valve. A compression type spring 89 is also located in opening S7 between the upper portion thereof and the piston head S6 and this spring operates to move the piston head 86 together with the disk $6 attached to the lower part of the piston d5 downwardly, thereby causing the port 84 in the valve to close. ln order to actuate the piston head 86 upwardly against the action of the spring 39, a port 9i) is provided in the housing dit. Thus when uid is allowed to enter the opening 90 it acts to force `the piston head 86 and piston 35 upwardly against the spring thereby raising the disk or plunger 86' of the piston 85 so that fluid can then pass freely through the surge valves from or to the tank through

openings

83 and 84. p

Each of pistons $5 of the

surge valves

81 and 82 is operated ultimately by a pump 91 mounted on tank 61 and driven by a motor 93, with the pump receiving uid from tank 6l at its entry port through the medium of line 9d. The exhaust side of pump 91 is connected through the medium of a line 95 and relief Valve 96 to a control valve 97. Control valve 97, which may be a single solenoid spring offset valve, is connected to `each of 'the surge valves S1 and 82 through the medium of the lines 99 and lili?, line 99 connecting valve S1 to valve 97 and line ldd connecting valve 82 to control valve 97. Another line 1ML connected to line 93 also connects control valve 97 to the surge valves which operate the secondary or locking cylinders and pistons on the other side of the edging mill.

Each of the surge valves S1 and 82 is provided with another port or opening 102. The openings 102 in valves 81 and d2 are connected through the medium of line iii?, and relief Valves 1M and 165 to the tank 80. Line 103 is also connected to the ports 84 of the surge valves through the medium of main branch line 106 and secondary branch lines lttW and 108.

The operation of the hydraulic system will now be described. As has been previously noted, the first thing to be determined in the operation of the hydraulic edgel is the distance the edge rolls must be moved toward one another which in turn is governed by the width of the ingot or slab being edge rolled. When this is determined the screws 33 are rotated by the motors 39 in such a way that the several piston rods 27 will be actuated and moved to a predetermined ixed position within their respective cylinders 26 so that the stroke of the piston will be fixed and the chuck elements and edge rolls can ultimately be moved toward one another to their proper edge rolling position.

After this initial adjustment or presetting of the primary cylinder assemblies has been made, that is, the cylinder assemblies for actuating and moving the edge rolls toward or away from one another, the next step is to operate the pistons 2.7 within the cylinders 26. To

do this, each of the

valves

65 and 67 is so adjusted thatl the port 77 of each valve is connected with port 75 and port 74 with port 76. At this time then, iluid will be pumped by means of the pump dit through the lines 64, o6 an 72 and deceleration valve 73 into the head end of cylinders 26 thereby displacing the pistons 27 within cylinders 2d and causing the several chuck elements 9 and 10 together with edge rolls l1 and 12 to move a predetermined distance toward one another. As the chuck 10 for example, is moved toward chuck element 9 while uid in the meantime of course is displaced from the rod end of the cylinder 26 through line 7d and into line 66, the deceleration valve 7i, which is rigidly attached to the housing 25 to which the chuck l@ is also attached, will also move forward with the chuck element 1li and edge roll 12. Consequently, just before the end. wall of cylinder 26 reaches the piston head 29, the deceleration valve 7i will be caused to be operated by the cam element 31 attached to the piston rod 27. Upon actuation, deceleration valve 72. will start to close thus preventing the cylinder 26 from slamming against the piston 27 while reducing the inertia of the moving parts. Furthermore, since the cam element 31 which operates the decelerating valve 71 is attached to the unenclosed portion of piston rod 26, the place at which valve il will contact the cam element 3l will also change as the position of the rod is adjusted by motor 39 thereby causing the decelerating action of the valve to occur at the proper place at all times.

While the chuck elements 9 and ld and rolls 11 and 12 are being moved -to their proper position, control valve 7 is lalso operated so that tluid may be passed from tank 61 through

lines

95, 98, 99 and ld@ to the: inlet ports 90 in the surge valves. This will cause the piston heads 86` l* 7 of the pistons 85 in the several surge valves to be raised against the action of the springs' 89, thereby moving upward the plungers 86' attached to the lower ends of pisa tons 85 and opening the ports Se in the several surge valves so that uid can then be fed by gravity from the overhead tank 80 throughv the lines 193, 10d, ltl and i553 to the inlet ports 84 of the surge valves and out of the valves -through the outlet ports 83 into the unoccupied portions of the locking cylinders b and 52,

It is of course to be remembered that at this the several piston heads 51 and 53 have in turn been moved out of the cylinders Sil and 52 or displaced therein as a result ofthe action of the chuck element lil as the chuck elements are moved toward one another since these pistons are rigidly attached to this chuck element ld. Thus as these pistons 51 and 53 are moved out of the cylinders and 52 respectively, fluid from tank 8d is allowed pass into the voids left inthe cylinders to ll lthe cylinders` with tluid so that the pistons cannot recede back into their respective cylinders under the pressure exerted by the slab or ingot upon the edging rolls and in turn upon the chuck elements 9 and 1t) during 'the time that the slab is rolled by the edge rolls lll and 12. Thus when the surge valves are open and the cylinder 26 is moved with respect to the piston 27 as well as pistons 5l and S3 with respect to cylinders St) and 52, the pistons 5l and 53 may be moved in and out with the rolls and tluid can tlow freely in either direction through the surge valves.

At the time the solenoid valves and d'7 are energized, it is contemplated that the solenoid operated valve 97 will also be energized. This in turn will cause the surge valves to open and allow liuid to tlow freely in either direction through the surge valves depending upon whether the cylinder 26 is moving the edge rolls toward or away from the center line of the mill. However, as soon as the solenoids of

valves

65 and 67 areV deenergized, it is to be understood that the valve 97 will be deenergized, thereby causing this latter valve to exhaust the control port side of the surge valves by cutting ott pressure on port of the surge valves, whereby ports 84 will also be closed and a hydraulic lock will be put on cylinders 5d and 52.

It is also contemplated that the surge valves S2 and 83 will also be connected to one another through the medium of the pilot ports tlZ, lines 162', relief valves 16d, and line 1555', shown in dotted lines in Figure 3. During actuation of the pistons and cylinders 55d, 51, 52 and 53, either one of these relief valves lil-4.', Lltl will be tightly closed. The other relief valve will be regulated to the system pressure setting. either of the surge valves loses pressure through a relief valve the other surge valve will automatically pass oil or lluid back to the tank Sli thus preventing unbalanced loads between cylinders Sil and 52. lt is also contemplated that the operation of the screws or threaded shafts 33 for adjusting the position of the piston rods 2'7 within cylinders 26 will be tied in with the control valves o5 and d'7 so that at any time the motors 39 for operating the screws are energized,

valves

65 and 67 will be deenergized so that the screws 33 will not have to operate against a hydraulic lock in the cylinder 26.

In order to open the hydraulic edge rolls and to separate them their maximum distance one from another so that an ingot may pass therethrough broadside to the mill after it has been edge rolled, all that is necessary is to adjust

valves

65 and 67 in such a way that the ports 77 therein will be connected with the ports 76 and ports 75 with the ports 74 which are plugged. At this time, the fluid which lis being displaced from the pump Sii will then pass through lines 64, 66 and 7d', deceleration valve 7l and into the rod end of the cylinders 2d 'thereby causing pressure to be exerted upon the head of the pistons 27 so that the pistons 27 will recede within their cylinders 26`and in turn open the edge rolls. At this time also, since the cam elements 54 are rigidly attached to the hus in the event that.

ares/nre cylinders 26 they too will move with the cylinders and into contact with' their deceleration valves 73 rigidly afxed to the frame 1. Consequently, as the camelements 5d move into contact with the cam operated de celeration valves 73 these valves will start to close just prior to the time that the cylinders 26 reach the piston heads 29 thereby preventing the cylinders 26' from slamming against the pistons 26 as fluid is evacuated from i the cylinders 26 through

lines

72 and 72 to the tank 61.

ln addition, since the valve 97 at this time is also energized, surge valves 3l and 82 will in turn be energized and fluid within the cylinders 5t) and 51 can also be displaced and forced back through the lines 107, 10S and

lines

106 and 103 into the gravity feed tank 80.

By means of the above apparatus, the edge rollsrof an edging mill can be moved forward toward one another and backwards away from one another at exceptionally high speeds. It also permits the feeding of an ingot broadside to the main stand of horizontal rolls in a mill in a relatively short time and at a speed consistent with the high speeds at which present day rolling mills operate. it is also obvious that the proposed apparatus for operating the edge rolls of an edging mill can be advantageously used under all operating conditions of an edging mill and is not limited to those instances where it is desirable to present the ingot broadside to the horizontally mounted rolls of a mill after the ingot has been rst edge rolled and then leaves the edging rolls.

An advantageous embodiment of the invention has been herein disclosed and described. lt is obvious that various changes may be made therein without departing from the spirit and scope thereof as defined by the appended claims, wherein what is claimed is:

1. In a rolling mill device the combination of a plurality of cooperating vertically mounted edge rolls, sep arate, laterally movable chuck elements for holding each of said rolls whereby when said chuck elements are moved in unison alternately toward and away from one another, said edge rolls will be moved laterally alternately toward and away from one another, means including a primary cylinder and piston for actuating each 0f said chuck elements and for alternately moving said chuck elements and in turn said edge rolls laterally toward and away from one another, secondary piston and cylinder means apart from said primary cylinder and piston for locking said chuck elements and said edge rolls in a fixed rolling position once they have been moved to within a predetermined distance of one another, the secondary piston of said secondary piston and cylinder means being directly connected to a chuck element and surge valve means for controlling the operation of said last mentioned piston `and cylinder means.

2. In a rolling mill device, the combination of a plurality of cooperating vertically mounted edge rolls, separate laterally movable chuck elements for holding each of said rolls, whereby when said chuck elements are moved in unison alternately toward .and away from one another said edge rolls will be moved laterally alternately toward and away from one another, cylinder andpis ton means for actuating said chuck elements and for al ternately moving said chuck elements and in turn said edge rolls laterally alternately toward and away from one another, piston and cylinder means separate from said first mentioned cylinder and piston means for l0cking said chuck elements and said edge rolls in a iixedy rolling position once they have moved to within a predetermined distance of each other, means for initially adjust-v ing the stroke or the piston within the cylinder of said tirst mentioned piston and cylinder means prior to any actuation of said first mentioned piston and cylinder means, and surge valve means for controlling the operation of said second mentioned piston and cylinder means.

3. In an redging mill device, the combination of a Dlurality of laterally adjustable cooperating chuck elements, an edge roll vertically mounted within each of said chuck elements, whereby when said chuck elements are moved in unison alternately toward and away from one another, said edge rolls in turn will be moved laterally alternately toward and away from one another, a primary cylinder and piston for actuating each of said chuck elements and for alternately moving said chuck elements and in turn said edge rolls laterally alternately toward and away from one another, a secondary piston and` cylinder also operatively connected to each of said chuck elements for locking said chuck elements and said edge rolls in a xed rolling position once they have been moved to within a predetermined distance of each other, means for initially adjusting the stroke of the primary piston in said primary cylinder prior to the actuation thereof, said means including a rotatable shaft, a piston head and a piston rod having a hollow interiorly threaded bore attached to the said piston head, and a threaded shaft, one end of which is rotatably mounted within said hollow bore in said piston rod and the other en'd of which is operatively connected to said rotatable shaft.

4. The combination claimed in claim 3 including iluid conduit means for operating said primary piston and cylinder and decelerating valve means in said iiuid conduit means for dampening the thrust of the primary piston in said primary cylinder at the end of the strokes thereof during the actuation of the said primary piston in the said primary cylinder.

5. In anl edging mill device, the combination of a plurality of laterally adjustable cooperating chuck elements, an edge roll vertically disposed within each chuck element whereby when said chuck elements are moved in unison alternately toward and away from one another, said edge rolls in turn will be moved alternately laterally toward and away from one another, a primary cylinder and piston for actuating each of said chuck elements and for moving said chuck elements and in turn said edge rolls alternately laterally toward and away from one another, piston and cylinder means separate from said primary cylinder and piston also operatively connected to each of said chuck elements for locking said chuck elements and said edge rolls in a fixed rolling position once they have been moved to within a predetermined distance of each other, means for initially adjusting the stroke of the primary piston in said primary cylinder, said means including a drive shaft, a piston rod having a hollow interiorly threaded bore, a threaded shaft having one extremity movably mounted within said hollow bore in said piston rod and the other extremity attached to said drive shaft, and power means for rotating said drive shaft and in turn said threaded shaft in alternate directions whereby said piston rod and in turn said primary piston can be moved to diiferent predetermined positions within said primary cylinder.

6. The combination claimed in claim 5 including guide means for preventing rotation of the hollow piston rod in said primary cylinder during the initial adjustment of said primary piston therein by rotation of said threaded shaft.

7. The combination claimed in claim 5 including iuid conduit means for operating said primary piston and cylinder and decelerating valve means in said fluid conduit means for dampening the thrust of the primary piston in said primary cylinder at the ends of the strokes thereof and during the actuation of said primary piston in said primary cylinder.

8. In an edge roll device of the type described for edge rolling an ingot or the like, the combination of a plurality of laterally adjustable cooperating chuck elements, an edge roll vertically mounted within each chuck element, whereby when said chuck elements are moved in unison alternately toward and away from one another said edge rolls in turn will be moved alternately toward and away from one another, separate primary cylinders and pistons operable in unison for actuating each of said chuck elements and for moving said chuck elements and in turn said edge rolls laterally alternately toward and away from one another, a plurality of secondary pistons and cylinders for locking said chuck elements and said edge rolls in a fixed rolling position and against lateral movement once the edge rolls have been moved to within a predetermined distance of each other, said secondary pistons being directly attached to the sa-id chuck elements and means including a plurality of surge valves for controlling the operation or" said last mentioned pistons and cylinders.

9. The combination defined in claim 8 including means for initially adjusting the stroke of the primary piston in each of said primary cylinders prior to the actuation thereof, said means comprising a piston rod having a hollow interiorly threaded bore and a threaded shaft movably mounted within the said bore in said piston rod with the threads on the shaft cooperating with the threads of the said bore in the piston rod. j

l0. In an edge roll device of the type described for edge rolling an ingot or the like, the combination of a plurality of laterally adjustable cooperating chuck elements, an edge roll vertically mounted within each chuck element, whereby when said chuck elements are moved in unison alternately toward and away from one another, said edge rolls in turn will be moved alternately toward and away from one another, separate primary cylinders and pistons operable in unison for actuating each of said chuck elements and for alternately moving said chuck elements and in turn said edge rolls laterally toward and away from one another, a plurality or' secondary pistons and cylinders also connected to each or' said chuck elements for locking said chuck elements and said edge rolls in a fixed rolling position once the edge rolls have been moved to within a predetermined distance of one another, means including surge valves for operating said second mentioned pistons and cylinders, and means for initially adjusting the stroke of the primary piston in each of said primary cylinders prior to the actuation thereof, said means including a motor element, a piston rod having a hollow interiorly threaded bore, a shaft having one threaded extremity ro tatably mounted within said hollow bore in said piston rod, with the threads on the shaft cooperating with the threads of the said bore in the piston rodl and with the other end of the said shaft being connected to the said motor element.

ll. The combination claimed in claim l including guide means for preventing rotation of the primary piston in said primary cylinder during the initial adjustment of the primary piston therein by the rotation of said threaded shaft.

l2. The combination claimed in claim. l() including iluid conduit means for operating said primary pistons and cylinders and decelerating valve means in said conduit means for dampening the thrust of the primary pistons in said primary cylinders at the end of the strokes thereof and during the actuation of said primary cylinders and pistons.

13. In an edge roll device of the type described for edge rolling au ingot or the like, the combination of a plurality of cooperating vertically mounted edge rolls, separate laterally movable chuck elements for holding' each of said rolls, whereby when said chuck elements are nic-ved in unison alternately toward and away from one another said edge rolls .viil be moved laterally alternately toward and away from one another, primary piston and cylindermeans for actuating each of said chuck elements and for alternately moving said chuck elements and in turn said edge rolls laterally toward and away from one another and secondary piston and cylinder means separate from said primary cylinder and piston means for locking said chuck elements and said edge rolls in a tixed rolling position once they have been moved to within a predetermined distance of one another, the secondary pistons of said areal 're secondary piston and cylinder ,means beine directly affixed vto said chuck elements.

14. The combination `defined in claim 13 including fluid conduit means `for operating said primary piston and cylinder means, and decelerating valve means in said luid conduit means for dampening the thrust of a primary piston in .a primary cylinder at the end of the strokes thereof during the actuation of said primary piston in said primary cylinder.

l15. In an edge roll device of the type described for edge rolling an ingot or the like, the combination of a plurality of vertically mounted .edge rolls, separate laterally mov able chuck elements for holding each of said rolls, cylinder and piston means for actuating said chuck elements and for alternately moving said chuck elements and in turn said edge rolls laterallyalternately toward and away from one another, a second piston and cylinder means separate` from said first mentioned cylinder and piston means for locking said chuck elements and said edge rolls in a fixed rolling position once they have been moved to within a predetermined distance of one another, the pistons of said second mentioned piston and cylinder means being directly ai'xed to said `chuck elements, means for initially adjusting the stroke of a piston within a cylinder of said irst mentioned piston and cylinder means prior to any actuation thereof, and surge valve means for controlling the operation ot said second mentioned piston and cylinder means.

16. yln a rolling mill device, the combination of a plurality of cooperating vertically mounted edge rolls, separate laterally movable chuck elements for holding each of said rolls, primary cylinder and piston means for actuating said chuck elements :and for alternately moving said chuck elements and in turn said edge rolls laterally alternately toward and away from one another, piston and cylinder means separate from said primary cylinder and piston means forlocking said chuck elements and said edge rolls in a fixed rolling position once they have been CII A12 v t. moved to within a predetermined distance of eachother, .means for initially adjusting lthe stroke Iof a piston within a cylinder of said primary piston and cylinder means prior to any actuation thereof, surge valve means for controlling the operation of said second mentioned piston and cylinder means, liuid conduit means for operating said primary piston and cylinder means, and decelerating vvalve means in said Nfluid conduit means for dampening the thrust of a primary piston in a primary cylinder at the end of the strokes thereof during the actuation of said primary piston in said primary cylinder.

17. In a rolling mil'l device, the combination of a plurality of cooperating vertically mounted edge rolls, scpparate laterally movable chuck elements for holding each of said rolls, primary cylinder and piston means for actuating said chuck elements and in iturn said edge rolls, secondary piston and cylinder means separate from said primary cylinder and piston means for locking said chuck elements and said ,edge rolls in a fixed rolling position once they have been moved to within a predetermined distance of each other, means for initially adjusting the stroke of a piston within a cylinder of said primary piston and cylinder means prior to `any actuation thereof, fluid conduit means for Operating said primary piston and cylinder means, and decclerating valve means in said uid conduit means for dampening the thrust of a primary piston in a primary cylinder at the end of the strokes thereof during the actuation of said primary piston in said primary cylinder.

References Cited in the file of this patent UNiTED STATES PATENTS 231,505 Stevens Aug. 24, 1880 844,350 Hale Feb. 19, 1907 FOREIGN PATENTS 97,383 Austria l une 25, 1924