USRE7240E - Improvement in machines for grinding rollers - Google Patents

Description

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J. M. PooLE. 'MACHINES Fon GRINDING RoLLERs.

No. 7,240. Re'ssued July 25, v1.876.

f l@ V mx N. PETERS, PNurO-LITNOGRAPHER. WASHINGTON. u CI uly 25, 1876.

ffii/Mm UNITED STATES PACrErrry OFFICE.

'J. MORTON POOLE, OF WILMINGTON, DELAWARE, ASSIGNOR TO HIMSELF,

WILLIAM T. PORTER, AND THOMAS S. POOLE.

IMPROVEMENT IN MACHINES FOR GRINDING ROLLERS.

Specification forming part of Letters Patent No. 104,492, dated, June 21, 1870; reissue No. 7,240, dated July 25, 1876 application tiled May 15, 1876.

To all whom it 'may concern:

Be it known that I, J. MORTON POOLE, of the city of Wilmington and State of Delaware, have invented a new and useful Machine for Grinding Rollers; and I do` hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in Which- Figure 1, Sheet 1, is a central longitudinal vertical section through the machine, showing a roller which has been reduced'from its ends to its middle portion. Fig. 2, Sheet 1,

is a plan view. Fig. 3, Sheet 2, is a vertical transverse section.

Similar letters ot' reference indicate corre- I spondin g parts in the several gures.

In the construction of machines for rolling sheet metal the rollers are required to be slightly smaller in ldiameter Vat the middle portion of their length than at their ends, so that when they expand from contact with the heated sheets of metal they will be straight upon their Working-faces. These rollers are constructed longer than the width otmetal to be rolled, and are subjected toca high heat at their middle portion, while the ends are comparatively cool, especially when their end journals are kept cool by the application of water.

Ilhe object ot' my invention is to produce a roller of gradually-diminishing diameter from its ends toward its middle, forming a symmetrical longitudinal curved outline, and my invention consists in arranging the axis ofthe rollerto be operated upon relatively tothe path ot' the traversing grinding mechanism, as hereinafter fully described.

To enable others skilled in the art to understand my invention, I will describe one practicable mode ot' carrying it into efect.

In the accompanying drawings, A represents the horizontal bed ot' the machine, which may be ot' any required width or length, and which should be substantially supported upon a frame or stand similar to the stand of a turning-lathe. Upon the bed, and moving in parallel guideways W W, is a horizontal sliderest, E, arranged transversely across the upper surface of the bed, and moved in a direcpulleys b b are applied, so that rotary motion 4 can be given to them at the same time that theyare moved with the slide-rest E fromone end to the other of the bed A;

The tool-rests F F are' arranged upon opposite sides of the longitudinal center ot' the machine, and can be adjusted nearer to or farther from each other by means ot' the screwrods e e and hand-Wheels I I, connected to their outer ends. The screw-rods 'e e are supported in, and prevented from'h'aving an endwise motion by, the bearings i t', kand pass through the nuts m m on the bottom ot' the tool-rests F F, as shown in Fig.

At or near the extremities of the bed A are bearings B B, to support the' roller to be op-4 erated upon. In practice these bearin gs should be pivoted, or otherwise so constructed as to accommodate themselves to the angle ot' divergence ot' the axis of the roller from the path of the grinding devices. A vertical adjustment is shown by means ofthe screw-rods O O and hand-wheels c c. Provision should also be made for rotating the roller while being operated upon.

Operation: rIhe roller is supported and revolved upon the bearings B B at an angle with the longitudinal path of the grindingsurface, which path-Will be at a greater distance from the axis ot' the roller at its extremities than at any intermediate point, as shown, for example, in dotted lines, Fig. 1.

This arrangement of the several parts will, when put in operation,'produce a roller gradually diminishing in diameter from its ends to its middle, and form the longitudinal curved outline shown. y

lHaving fully described my invention, what I claim, and desire to secure by Letters Patent, isv 1. A grinding-machine Aconstructed with suitable bearings for supporting a revolving roller to be operated upon, and provided with a iongitudinally-traversing grinding` mechanism, said roller being arranged at an angle with the path of' the grinding-surface, so that; its axis Will be at E greater distance from said path at each extremity of the rollerl than et any intermediate point, for the purpose of producing a roller with :L grzidually-diminishing1 diameter from its ends to its middle portion, as shown.

2. A grinding-,machine constructed with adjustable bearings for supporting` a revolving` roller to be operefed upon, and provided with n longitudinelly-traversing grinding ineehnnisin, for the purposewlspeeied.

J. MORTON POOLE.A

Witnesses:

WILLIAM HAYES, ALFRED POOLE.

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