W. A. DUNN.

ROLLER MILL. APPLICATION FILED NOV. 5, 1910. RENEWED FEB. 7, 1914.

Patented Sept. 1, 1914.

5 SHEETS-SHBET 1.

W. A. DUNN.

ROLLER MILL. APPLICATION FILED NOV. 5, 1910. RENEWED FEB. "I, 1914- Patented Sept 1,1914.

5 SHELTB-SHBBT 2.

W. A. DUNN.

ROLLER MILL. APPLICATION FILED NOV. 5, 1910. RENEWED BBB. 7, 1914.

Patented Sept. 1.1914.

5 SHEETS-SHEET 3.

auvewto z Wh-DuIL7L 3313 an All l w. 1mm. ROLLER HILL. APPLICATION FI LED HOV. 5, 1910. RENEWED FEB. 7, 1014. 05 1.'

Pa1 ;ented Sept. 1, 191i SSHEETB-SHBBT 4.

W. A. DUNN.

ROLLER MILL.

AYPLIOATION FILED NOV. 6, 1910. RENEWED FEB. "I, 1914.

Patented Sept 1, 1914.

6 SHEETS-SHEET 5.

IINITED STATES PATENT OFFICE.

WILLIAM. A. DUNN, OF SMITHVILLE, MINNESOTA, ASSIGNOR F ONE-HALF TO A. M.

MILLER, JR, OEDULUTH, MINNESOTA.

ROLLER MILL.

Specification of Letters Patent.

Patented Sept. 1, 1914.

Application filed November 5, 1910, Serial No. 590,219. Renewed February 7,1914. Serial No. 817,329.

To all whom it may concern:

Be it known that I, WILLIAM A. DUNN,

' a citizen of the United States, residing at Smithville, in the county of St. Louis and State of Minnesota, have invented .certain new and useful Improvements in Roller- Mills, of which the following is a specifica-,

, provide side rolls to cotiperate with a set of tion of themill.

flange controlling rolls, to hold the metal in alinement.

The invention also relates to the specific arrangement of the guides, and the manner of supporting the same whereby to cooperate with the web reducing and flange controlling rolls to effect convenient adjustment, and efl'ectual guiding, of the metal as it passes through the mill. y

In my former Patent No. 709085, dated September 16, 1902, I disclose a mill of the same general character as that about to be described, but I employ but a single side roll on each side carrier, thus doing away with the multiplicity of rolls and saddles and corresponding carriers for the rolls, which enables me to practise economy and at the same-time insures the eflective opera- In practising the invention as outlined in previous mills, it has been found impossible to retain the vertical side rolls, where two or more are used, in true vertical alinement because of the unequal wear of the bearings, due primarily to the lateral pressure exerted by the metal. When the rolls become worn and out of alinement, they force the flanges of the metal to assume somewhat of the configurations of the sur-v face of said side rolls and therefore distort the outline of the beam, and prohibit the production of a perfect section. Accordingto my present invention, the details of which will be hereinafter described and particularly pointed out in the claims, I provide details of construction, and arrange the parts in such manner as to effectually overcom these defects.

The invention comprehends improvements in the details of construction and specific arrangement of the parts, to accomplish the several functions.

In the drawings, forming part of this specification: Figure 1 is aside elevation partially in section of a mill constructed in accordance with my invention. Fig. 2 is a partial top plan and horizontal section approximately on the line 2-2, Fig. 1, the caps of the set of rolls-at the top of the figure being shown in position, while the caps of the corresponding rolls at the bottom of the figure are omitted. Fig. 3 is a detail transverse section on the line 33 of Fig. 2, to illustrate the interior arrangement of the means for supporting one of the side vertical rolls which cooperates with the set of,

web reducing rolls. Fig. 4: is a face view of one of the vertical side rolls shown in Fig. 3, and its supporting carriage. Fig. 51s a plan view of the same. Fig. 6 is a detail side elevation of the carriage, shown in Fig. 3. Fig. 7 is a detail transverse section on the line 77, of Fig. 2, to illustratethe inis a sid elevation of the said roll and its carriage. Fig. 11 is a cross section on line 11-11, Fig. 2. Fig. 12 is a detail central vertical section taken through the flange controlling rolls.

Referring to the drawings, 1, indicates a foundation upon which the mill is mounted, and supported thereon are guideways 2 and 3, in which are mounted two pairs of vertically disposed frames 4 and 5. The frames. 4 and 5, are adjustably fixed to the guideways 2 and 3, by means of bolts indicated at 6. In the vertical frames 4, the set of web reducing rolls 7 and 8 are mounted. The lower web reducing roll 7, is mounted in stationary bearings 9, while the upper web reducing roll 8, is mounted in an adjustable bearing 10. The bearing 10, is formed with guideways to engage guides 11, on the inside of the frame 4, and at ts upalike.

per end the said hearing has an upwardly extending screw 12, swiveled in the bearing and engaging a threaded opening in the vertical frame 4. On the upper end of the screw 12 is a worm gear 13. Depending from opposite corners of the bearing 10, are rods 14, connected at their lower ends by a yoke 15, and pivotally connected to the yoke is a piston rod 16, the piston of which operates in a cylinder 17, secured to the underside of the frame 4.

The construction just described, in reference to the bearing 10, and its adjustment, it will be understood is duplicated on opposite sides of the roll 8, to insure that the said roll will be uniformly raised whereby to prevent irregularities in, the product produced.

The web reducing rolls are of cylindrical formation and have their outer edges beveled as shown at 8, and are constructed exactly Mounted in guideways in the respective vertical frames 4, are carriages 20, each of which carries a vertically mounted side roll 21, arranged adjacent the ends of the horizontal web reducing rolls 7 and 8. Each carriage 20 comprises a lower cup-shaped member 22, and an upper member or cap 23, the latter being bolted, as indicated at 24, to the lower cup-shaped member 22. The two members 22 and 23 are formed with alined openings 24*, to receive the journals 25, of a central hollow hub 26, which is flanged at 26* to engage the surfaces of the two members 22, and 23, as shown clearly in Fig. 3. The cap or member 23, is formed with a shoulder 23*, and an outwardly extending flange 23", the latter and the shoulder engaging the cup-shaped member 22, whereby when outward thrust is given the vertical roll 21, the shoulder 23, abutting against the inner surface of the cup-shaped member 22, resists the strain on the journals of the hub 26. This hub is cored to form a chamber 27, with which communicates a water supply pipe 28, for the introduction of water, which acts as a cooling medium when the mill is in operation. The water flows through the chamber 27, and passes out through the opening at the top of the hub 25, and over the bearing. Fitted over the hub 26, is an adjustable tapered bushing 29, keyed in position at 30, and on which the vertical roll 21 revolves. The cone-shaped bushing 29, may be adjusted vertically to properly center the vertical roll 21, by

means of screws 31, which pass up through threaded openings in the lower cup-shaped member 22. I have found by practical experience that once the cone-shaped bushing 29, is set, it has a tendency to wear on one side, due to the pressure exerted by the metal passing betweenthe periphery of the vertical roll 21, and the ends of the horizontal web reducing rolls 7 and 8. It is,

therefore, necessary to provide means for overcoming this objection. I have provided the upper journal 25, of the hub 26, with a series of grooves indicated at 35, and in the bearing 24, of the upper member 23 of the carriage, I have provided a groove 36. Fitting in the groove 36, and one of grooves 35, is a pin 37, whereby'the hub and the coneshaped bushing 29, will be locked against rotation. If it be desired to change the osition of the hub and the cone-shaped bus fling 29, the pin 37, is withdrawn and a tool is inserted in the opening in the upper journal of the hub 25, and the cone-shaped bushing rolls 21 and the ends of the flange reducing rolls 7, and 8.' The carriage 20, is formed with two annular oil receiving chambers 38, which are connected by an oil channel 39, oil being supplied through an opening 40, whereby'the cone-shaped bushing 29, may be thoroughly lubricated.

It is noted that according to my invention I use but a single side vertical roll 21, on

each end of the web reducing rolls 7, and 8,

and they are each in alinement with the other and are adjusted simultaneously toward and from the ends of the web reducing rolls 7, and 8. Each carriage 20, has swiveled to its outer end, two screws 42 engaging threaded openings 43 in bushings in the guide of the carriage 20. On the outer surface of the guide-way are secured caps 44, havin annular flanges 45. The caps 44 fit over tIie squared ends of the screws 42, and on the ends of said screws are worm gears 46. On the inner sides of the worm gears 46, are bolted plates 47, which engage behind the annular flanges 45, to retain the worm gears in proper position and form bearings for the same. The worm gears 46, engage worms 48, on shafts located in bearings directly under the worm gears. At the end of each worm shaft is a beveled pinion 49 meshing with a beveled pinion 50, on a shaft 51, extending upwardly above the vertical frames 4, where it is provided with a beveled pinion 52.

It will, of course, be understood that the mechanism just described, is duplicated on both sides of the mill, and a horizontal power shaft 53 is provided with beveled pinions 54, which engage the beveled pinions 52, and simultaneously operate the two carriages 20. On the shaft 53, are worms 54*, which engage with the worm gears, 13, to raise and lower bearings 10. Inthc vertical frames 5,

is a lower flange controlling roll 60, mountthis construction I am enabled to obtain a which are beveled at ed in fixed bearings 61, and an upper adjustable flange controlling roll 62, mounted in a bearing 63, having guideways to engage guides 64, in the sides of frames 5. The bearings 63, have swiveledto them screws 64, engaging threaded opening in the frames 5, and extendin upwardly from the same and are provi ed with squared ends on which fit wor'm gears 66. Extending from the lower corners of each of the bearings 63, is a rod 67, the respective pairs of rods being connected by a yoke 68, connected by a piston rod 69, with a hydraulic cylinder 70.

The flange controlling rolls have enlarged end portions indicated at 60, the edges of Connecting the enlarged portions is a hub 60, and extending from the outer ends of the said rolls are flanges or hubs 60, designed to engage the edges of the flanges of the beam when passing through the mill. Adjacent each end of the flange controlling rolls is a carriage 72, in which is mounted a vertically disposed side roll 73, the periphery of which coiiperates with the ends of the horizontal flange controlling rolls 60 and 62. Each carriage 72, comprises a lower member 74, provided with a rib 7 5, and an upper member 76, which has a rib 77, designed to engage withthe rib 75, to assits in locking two members together and resist the out ward strain of the pressure of the metal passing through the mill. Each member 74,

and .76, has bolted to it a cap member 78, and a bearingis formed by said caps and the two members, as indicated at 79 to receive the extended journals 80, of a hub 81, on which the vertical roll 73, is mounted.

The vertical roll 73, is formed with depres-' sions 82, on opposite surfaces and the members 74, and 76, are grooved as at 83. By

substantial bearing for the journals of the hub 81, the groove 83, permitting of the enlarged outer portion of the vertical roll 73, being seated within the carriage, as clearly shown in Fig. 7 The two members 74 and 76, of the carriage 72, are bolted together] by bolts 85, so that the parts can be conveniently assembled and adjusted when required.

Swiveled on the outer surface of each of the carriages 72, is a single screw 86, which is in the plane of the centers of the hub 81, and the flange controlling rolls 60 and 62, and on the outer squared end of the screw 86, fits a worm gear 87. A hub 88 extends from the outer surface of the guide-way of the carriage 72, and at its outer end is formed with a flange 89, behind which fits a ring 90, bolted to the inner side of the worm gear 87. The worm gear 87, meshes with a worm 91, mounted in bearings directly under the worm gear 87, and on one end of the the mill so as to simultaneously adjust the two carriages, 72. A horizontal shaft 96, mounted above the vertical frame 5, has secured to it beveled gear wheels 97, which mesh with the beveled wheels 95, and said shaft is also provided with a worm 98, which engages with the worm gear 66. Also on the shaft 96, is a beveled gear wheel 96*, which is engaged by a beveled gear wheel 99, on,a shaft 100, on the opposite end of which is a beveled gear 101, meshing with a beveled gear on the horizontal shaft 53.

Supported on rods 105, and 106, mounted in openings 107, and 108, in the vertical frames 4 and 5, is a bottom guide 109. The

guide 109, is approximately flat on its upper surfaces and on its opposite edges it is provided with downwardly extending flanges 110, to correspond to the configuration of the inner surface of the beam, as shown in Fig. 11. The ends of the bottom guide extend Over the web reducing rolls and over the flange controlling rolls, as clearly indicated in Fig. 1. A front bottom guide 111, extends forwardly from the web reducing rolls and it is supported on a bar 112, which fits in openings 113, in the vertical frames 4.

114 indicates a top guide located in rear of the web-reducing rolls and it is mounted on a shaft 115, and is counterbalanced by an arm and a weight 116. The weight is ad-- justed so as to keep the forward end of the guide 114, in constant contact with the top web reducing roll 8, and thus as" the roll is adjusted up and down, the guide willfollow the same. Fulcrumed on the shaft 115, is a top ide 117 which extends rearwardly and 1s formed with an opening through which passes the central portion of the upper flange controlling roll 62, thus permitting the upper guide 117, to travel up and down with a top flange reducing roll. All

of the guides are constructed so as to correspond to the interior surfaces of the beam being rolled, but the space between the horizontal portions of the upper and lower guides is a trifle greater than the thickness of the web of the beam so as to prevent the metal sticking. As the section of metal be.-' ing rolled does not change its inside size, the guides will at all times properly guide the material to and from the rolls without the liability of side swaying or twisting. Furthermore, the guides are so constructed that they. guide the flanges of the beam as well as the web portions. Short side guides 120, and 121, are located in front and rear of the web reducing rolls, their ends being dovetailed at 122, and fitting in correspondducing rolls.

By this construction, both ends of the sideguides move simultaneously with the carriage.

In operation, a blank which has been previously treated in a shaping mill is entered between the guides 120, to the web reducing rolls 7, and 8. The end flanges a of the beam'fit in the space 1) formed between the ends of the web reducing rolls and the periphery of, the vertical rolls 21, while the web portion 0 of the beam is operated upon by the cylindrical portions of the web re- The web reducing rolls are operated through the medium of gears (not shown), which feed the beam'toward the flange controlling rolls, the beveled portions 8 of the web reducing rolls and the periphery of the vertical rolls 21, creating pressure suflicient to shape the flanges of the beam, as shown in Fig. 3. As the beam passes from the web reducing rolls through the guides in rear of the same, it is directed by the latter to the flange controlling rolls. The hubs on the flange controlling rolls are so arranged that they act upon the edges of the flangesa of the beam, as shown in Fig. 7. The vertical rolls 7 3, are so situated, that the pressure exerted by the hubs 6O on the flange a prevents buckling, and-La substantially uniform flange is produced. By providing the specific construction of the end vertical flange rolls 73, and their bearings, I am enabled to utilize a single roll having the necessary strength and size to operate adjacent the two flange controlling rolls and thereby confine the metal.

Claims:

1. In a mill ofthe class described, the combination of a set of web reducing rolls, vertical rolls located on the ends of the web reducing rolls, a set of flange controlling rolls, each of which is provided with a reduced portion, a lower guide extending from a point adj acent'the lower web reducing roll and between the reduced portions of the set of flange controlling rolls,'means"=for supporting the rear end of said guide, means for supporting the front portion of said guide, said guide having depending side flanges, an upper guide located between the web reducing rolls and. the flange-controlling rolls, means for supporting the said upper guide, means for adjusting the web red ducing and flange controlling rolls, and the upper guide, said upper guide havin upwardly extending flanges, said upward y extending flanges and the depending flanges combination of a pair 0 of the lower guide engaging the inner surface of the flanges of a beam passingupper guide supported at one end on the upper flange controlling roll, a bar supporting the opposite end of the upper guide, and a' second upper guide pivoted on the said bar and having a weighted lever to retain the end of the said second guide in contact with the upper web reducing roll.

3. In a mill of the class described, the combination of web reducing rolls, a vertical roll adjacent each end of the rolls, means for adjusting the vertical rolls, a set of flange controlling rolls, each of which is reduced at. its center and having flanges at it's ends which are beveled on their outer surface, vertical rolls located adjacent the flange controlling rolls, means for adjusting said vertical rolls, a lower guide extend-mg .from the lower web reducing rolls and between and beyond the flange controlling rolls, means for supporting said guide, said guide having depending flanges, an upper guide extending from the upper web reducing roll rearwardly to the upper flange controlling roll and provided with an opening through which the reduced portion of the upper flange controlling roll passes, and means cooperating with the said guide to cause its forwardend to follow the vertical movement of the upper web reducing roll.

4. In a mill for rollin flanged beams, the

%horizontal web re-. ducing rolls, a pair of flange controlling rolls, means for adjusting all of-said rolls, a continuous guide for a beam, said guide having a flatsurface for the web of the beam and surfaces disposed at an angle to the flat surface and extending from the web reducing rolls to a'point beyond'the flange controlling rolls whereby the guide will engage the web of the beam and the inner surfaces of the flanges thereof to maintain the beam in positive alinement and to prevent the forward end of said beam from bending laterally. V

5. In a mill of the class described, the combination of a pair of horizontal web reducing rolls, a vertical roll located adjacent each end of the web reducingrolls, a pair of flange controlling rolls, a vertical roll located adjacent each end of the flange con trolling rolls, the said latter vertical rolls being of less diameter than the vertical rolls adjacent the'ends of the web reducing rolls, means for simultaneously adjusting all the rolls, a bottom guide between the web reducing rolls and the flange controlling rolls, said guide having depending side flanges, an upperguide having upwardly extended flanges, and means for adjusting the upper guide with the upper flange controlling roll.

6. In a mill of the class described, the combination of a pair of web reducing rolls, a pair of flange controlling rolls a lower guide between theweb reducing and flange controlling rolls, said lower guide having downwardly extended flanges at its sides, means for supporting the lower guide, a cross bar, an upper guide s aced from the lower guide and consisting o a forward and a rear member, the forward member being hinged on the cross bar, a weight attached to the forward member to cause its free end to fit snugly the upper web reducing roll, the rear member having a bearing through which the upper flange controlling roll passes to support said rear member at one end, the opposite end of the rear member being supported on the cross bar, and means for ad3usting the web and the flange controlling rolls.

7. In a mill of the class described, the combination of a pair of horizontal 'web re ducing rolls, a pair of flange controlling rolls, means for adjusting all of said rolls, a continuous guide for a beam, said guide comprising members, one of which is provided with an uninterrupted surface extending from the web reducing rolls to a point beyond the flange controlling rolls, and one of said members extending from the web reducing rolls to and supported on one of the flange controlling rolls whereby to maintain the beam in positive alinement and to prevent the forward end of said beam from bending laterally.

8. In a mill for forming flanged beams, the combination of a pair of horizontal web reducing rolls, a vertical roll located adjacent each end of the web reducing rolls, a pair of flange controlling rolls, a vertical roll located adjacent each end of the flange controlling rolls, means for simultaneously adjusting the web reducing and the flange controlling rolls, and means forming a continuous guide for the beam between the flange controlling rolls and the web reducing rolls and to a point beyond the flange controlling rolls including a guiding member with a flat surface and surfaces inclined therefrom, which surfaces engage the web and inner sides of the flanges of the beam whereby to maintain the beam in positive alinement and to prevent the forward end of said beam from bending laterally.

In testimony whereof I aflix my signature in presence of two witnesses.

WILLIAM A. DUNN. Witnesses:

Gro. S. Lrvmss'ron, K. E. KLEIN.