US349806A - Apparatus for turning rolls - Google Patents

Description

(N0 MddeL) SheetsSheet 1.

J. MOINTO$H.

APPARATUS FOR TURNING ROLLS.

bro/349,806.

Patented Sept. 28, 1886.

A TTOP/VEY (No Model.) I 2 Sheets-Sheet 2. 1

J. McINTOSH.

APPARATUS FOR TURNING ROLLS.

No. 349,806. PatentedSept. 28, 1886.

ATTORNEY the housing, as

By the improvement hereinafter shown the PATENT ()rrrcs.

JoanMoINTosH, or CLEVELAND, orrro.

APPARATUS FOR TURNING ROLLS.

SPECIE'EGATION forming part of Letters Patent No. 349,806, dated September 28, 1886.

Application filed June 28, 1886. Serial No. 200,465. No model.)

To all whom it may concern.-

Be it known that 1, JOHN MOINTOSH, of Oleveland,in the county of Ouyahogaand State of Ohio, have invented a certain new and Improved Method or Mode of High Rolls; and I do hereby declare that the following is a full, clear, and complete descrip tion thereof.

The nature of my invention relates to the means employed for turning the rolls that their faces may be in right line with each other. This is done without removing the rolls from is usually the case.

roll or rolls are turned by means of a rest, cutters, and adjusting key or wedge arranged in such relation to the rolls that one or more of them may be turned off and their faces Ten]- dered parallel with each other after they have become Worn and too imperfect for and by use.

It is well known to those skilled in this art of turning and using three-high rolls that'the best results can only be obtained when the surfaces are in good order; hence for this reason V much delay and expense are caused if strict at tention is not given to their condition, and a consequentimperfection and an unsalable character follow, in consequence of the metal passing through betweenthe imperfect rolls. The delay and expense caused in the old way arose from the necessity of taking housings to be'turned in a lathe, often remote from the location of the mill, and replacing the rolls in order again in the housing. This, as

stated, stops the operation of the rolls and causes considerable expense. The object of the said improvement is to reduce the said delay and cost to a minimum, and to assure the more perfect results in the plates and sheets. That the full scope of the invention may be fully seen and understood, reference will be had to the following specification, and to the annexed drawings, making part of thesame, in which like letters of reference refer to like parts in the drawings and specification.

Figure 1 is aside elevation of a set of threehigh rolls with the turning devices, connected therewith. Fig. 2 is a plan view of Fig. 1. Fig.3 is atransverse section of the same in the line a: a. Fig. 4 is a perspective detached Turning Th reethe rolls from the ter F may require.

section of the rolls, showing the position of the devices employed for turning the roll or rolls. The invention as herein shown is applied to turning three-high rolls for plate and sheet metal. It is applicable to turning other trainrolls without. departing from the nature of the said invention.

The mode of operation, as herein shown, is

applied to the central roll of the set, as this roll requires more attention to keep in order than the upper and lower rolls. In fact, the top and lower rolls are more or less dependent upon the condition of the central roll as to their efficiency, for the reason of its having a smaller surface and being brought in contact with the hot iron or steel twice in every revolution to once of the upper and lower rolls, thus resulting in a more rapid wearing away of the central roll, and a consequent frequent repairing or turningof the same.

It has been the practiee,when the central roll became so worn as to require turning, that the upper roll has been first raised up in the housing, to take out the central one to be turned in a lathe. This labor, cost, and delay are avoided by the use of my improvement, as the roll or rolls remain in their respective places, and the means for turning them directly attach ed to the mill or train and the rolls turned and trued up by said means as they are rotated in the housing.

The rest-bar A, Figs, 1 and 2, is inserted in elongated slots 13, formed in the inner sides of the housing G, on which bar the tool-rest D bears. The lower part of the tool-rest is supported upon the roller E at (1, Figs. 3 and4. In the toolrcst is a shoulder, a, in which-is placed the cutter or tool F and lining G, Figs. 2 and 4, which cutter is moved and adjusted for turning off the central roll, H, by means of the key or wedge I and one or more backing-plates, G, of variable thickness, according to the condition of the roll and its diameter as the distance between the roll H and the cut- The cutter does its work in shaving the roll on the rotation thereof by the same means as used for rolling the metal. The chips or shavings taken off from the roll by the cutter are discharged through the opening I) in tool-rest D, Fi 3. In turning the wedge more or less on roll the mechanic is to caliper the roll from time to time and to determine as to the proper size the roll is to be and adjust the cutter F accordingly, which is done by forcing in the one side or the other, so as to shave off more or less at one side of the cutter than at the other-that is, on either side of the vertical center of the cutter. This is done by forcing in the wedge, and at the same time tipping it to the right or left, accordi ng to the amount to be shaved off. This tipping of the wedge causes one side or end of the cutter to be in closer contact with the roller than the other end of the cutter. In case the entire edge of the cutter is required to be in the same contact, or parallel to the face of the roller, the wedge is forced in between the cutter and the shoulder c in the central part of the cutter, so that the cutter will be parallel with the face of the roller. This is done by the wedge beingin a vertical position when forced in. After a section of roller has been turned by the cutter it is then moved along, with the tool-rest on the bar A, to an adjoining section of the rollsay next to the part which has been turned down by the cutter. There the operation of turning down this next section is essentially the same as that described for turning the first part of the rollers. In this way the entire face-length is trued up in-a right line, and a uniform diameter is given to the roll. The tool-rest may be set to do the requi red work at any point betweenthe housing, and it may also be applied to turning the top or lower rollers. After the turning of the roll or rolls has been finished the tool-rest and its attachments are readily removed. The practical operation of the rolls may then go on as before the turning of the rolls. In this way the cost, labor,and time required in removing the rolls from the housing to a distant point for turning, re-turning, and replacing the turned roll or rollers in their original relation are avoided. Added to this is the loss by the n on-use of the mill during this time. This is of material value and importance, as the nonuse of'the mill is only during the time of turning the roll by the said improved method.

It is well known in this art that rolls are allowed to run when not in proper condition for good work, because of the labor and expense of removing them for turning and replacing them, and also the stoppage of the mill while this is being done.

In the practical operation of three high rolls, the frictional action on the center roll being much more than on the upper and lower rolls results in the center rolls becoming concaved or worn out more in the central part than at the ends. The result of this is,that in rolling plate or than at the sides, which on cooling causes the metal to buckle or bulge, more or less, which materially impairs its value in thetrades. The purpose of the improvement is to avoid this injury to sheet and plate metal by the ready means described for keeping the rolls in good condition.

The result in allowing the central roll to run when worn down inits central part is to cause the chill of the rolls to spalt or flake off at the parts of frictional contact of the upper and lower rolls with the central one, as the rolls will move quickly in contact as soon as the metal passes out from between the rolls. In some cases this is so injurious to the central one as to renderit worthless for use in a very shorttime; but with my improvement applied and used as stated, the rolls or roll may be continued in use until the chill is entirely turned off while in the housing; hence it will be seen a great saving arises from the use of the said mode of keeping the roll in good condition in the way described.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

1. In co-operative conjoint relation with the three-high rolls, the cutter F,arranged adj ustably in the movable rest D, supported by the bar A, located in front of the rolls and between the housing, in combination with the wedge I and backing-plates G, substantially as and for the purpose set forth.

2. In co-operative combination with threehigh rolls, the bar A, sustained in parallel and horizontal position between the housing, the movable tool-rest D, adjusted to and supported on. its outer side by said bar, and its inner under side by the lower roll in the shoulder 0, arranged in relation to the cutter F, adjusted by the wedge I and backing-plates G, substantially as and for the purpose set forth.

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

JOHN MOINTOSH. Witnesses: W. H. BURRIDGE, ALFRED F. JoNEs.

sheet metal it is thicker on the center

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