US67495A - Joseph d - Google Patents

Description

J.D.CARTE.R. I APPARATUS FOR STRAIGHTBNING SHEET METAL. No. 67,495.

Patented'Aug. 6, 1867.

JOSEPH D. CARTER, OF THCMASTON, CONNECTICUT.

Letters Patent 1V0. 67,495, dated August 6, 1867.

IMPROVED APPARATUS FOR STRAIGHTENING SHEET METAL.-

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOSEPH D. CARTER, of Thomaston, in the county of Litchfield, and State of ,Oonuecticut, ha e invented, made, and applied to use a certain new and useful improvement in Straightening Rolled Sheet Metal; and I do hereby declare the following tobe a full, clear, and exact description of the said invention, reference being had to the annexed drawing, makingpart of this specification, wherein- I Figure 1 is s vertical section of the machine employed by rnc for. straightening sheets of rolled metal, and

Figure 9. is a plan of the same.

Similar marks of reference denote the same parts.

Sheet metal, when it is rolled, is seldom or never perfectly fiat. It may be reduced to a. perfectly uniform thickness, but it has an undulating surface, the undulations being generally at right ahgles to the motion of the sheets through between the rollers. This undulation is particularly detrimental in the sheets of brass employed for printers rules, because said rules are entirely useless unless perfectly fiat,-and heretofore that condition could only be attained by costly and tedious manual labor.

My present invention relates to a method of ilattening a sheet or strip of rolled metal, and is especially adapted to the flattening of sheets or strips of metal for printers rules, but may be employed for any character of'she'ets of rolled metal. I

, The said invention consists in subjecting the sheet metal to a series of gradually diminishing bends between rollers or surfaces that act crosswise of the set or bend of the plate, and such bends acting alternatelyin oppo-- site directions remove the previous set or bend of the plate, and gradually diminishing ultimately, leave thesheet perfectly fiat.

In order to effect this straightening the more rapidly,I mount a series of bed-rollers, a b c d e, in asuitable frame,f, and fit the rollers g h i I: in an ad'ustable frame, l, supported between standards m, and provided with setscrews n and q. The rollers in the framel and the bed-rollers are to be geared together by a. train of wheels, shownin fig. 2, and by dotted lines in fig. l each roller in the frame I coming above the space between two of the bed-rollers in It will now be understood by the strip of sheet metal shown at o, in fig. 1, that the screws 12. and q are to. be adjusted so that the strip of metal on entering receives a considerable head between the rollers a, b, andg, and that the next rollers g, b, k bend the sheet in the opposite direction, but a less amount, and that the bends gradually diminish; and finally the rollers d, k, and e simply remove the slight bend left by the rollers 1', d, k, leaving the sheet perfectly flat.

For the purpose of straightenirg sheet metal, I claim the arrangement of a series of rollers, in the manner described, by means of which a sheet of metal may be subjected to a series of gradually diminishing bendings,

as set forth. 1

In witness whereof I have hereunto set my signature this thirteenth day of May, A. D. 186?;

JOSEPH D. CARTER.

Witnesses:

HIRAM Prsnce, D. S. Phone.-

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