US72790A - Island - Google Patents

Description

'y @with tate getrapt fitte;

GEORGE B. BRAYTON, OF` BOSTON, MASSACHUSETTS, AASSIGNOR TO vHIM- SELF AND J. BOARD, OF BRISTOL, RHODE ISLAND.-4

Letters .Patent No. 72,790, dated December 31, 1867. l

IMPROVBD METHOD or MAKING BYBLBTS.

TO ALL WHOM IT MAY CONOERN:

Be it known that I, GEORGE BL BRnYrON, of Boston, in the county of Suffolk, and State of Massachusetts, have invented a new and improved Method of Making Eyelets; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specification, is a description of my invention, -s'uihcient toen'able those skilled in the art to practise it.l I i In the manufacture of metal eyelets, thepraetiee is, so far as'I know, to strike them up from sheet metal, the effect-of which process is to leave the lange forming the base of the eyelet of about uniform thickness with the plate, while fromthe base to the top the metal is so drawn or attenuated as to be very thin at the upper end of the eyelet. When the eyelet so made isl applied, the turning over of the upper end to clinch the eyelet,v in the work is apt to rend the eyelet. The two surfaces of the clinched eyeletgare not` uniform in appearance, and the weakness of the `flange, formed by the thin.end, causes the eyelet to tear from the leather or fabric to which it is applied, the flange not having strength-or rigidity enough to resist strain brought to hear upon it by a lacing cord.

The ob'oct of this invention is the reduction of an e elet free from these defects and this is attained b v .l P y s y making the eyelet from a metal tube, in contradistinction to striking it up froma plate or sheet of'metal, the eyelet so made being of uniform, or practically uniform, thickness of metal throughout, and having the metal form-ing the upper end so disposed that vwhen clinched the two flanges shall correspond in condition and appearance. Itis, therefore, a new method of making eyeletsgand of uniform, or practicallyuniform, thickness of metal throughout, that constitutes this invention.

A, in the drawing, represents a section of an eyelet (enlarged) of this construction; B shows a similar viewof the common form of eyelet.

i In striking up the eyelet B from a plate or sheet of metal, it will be obvious that the metal'must be drawn from the condition or thickness shownat the base, which isiabout the normal thickness ofthe plate, to the thinness shown at the top of the same, and'that when the top part is still further drawn out'by upsetting it outwards to .clinch it upon the goods to which it is applied, the'metal'willeither rend, or 'will have such weakness as to be incapable' of resisting any considerable strain uponit, tending to detach'itfrom the goods. B ut by A'cutting the eyelet A from amctal tube, both the base-and the top retain very'nearlythe uniform thickness of metal exist- 'ing in thc tube, and when applied both must correspond inform and appearance, each part having been only Subj in making thc eyelet, and the other by the action of the setting tools.

The respective conditions of the two eyelets, when applied, will be understood by referenceito D and 'E in the drawing. The eyelet A. may be formed automatically by mechanism, which shallcut the length necessary to form each eyelet fromthe end of the tube, and then feed it upon a die, which shall ,impart a slightlyconical form to its body and a are to its base; or the operation of cutting and 'forming may 'be ci'ectcd by separate eeterl to the strain vnecessary to form it into a clinching iiange, one of whichis formedfor partially' formed,`

machines. The tube having been previously, by any suitable means, drawn 'down to. the proper size, it is thencut transversely into pieces or sections of the length adapted to the length ofthe eyelet to he formed. A desirable-mode of accomplishing this I find to be by .the-usc f a series of disk-cutters and intervening rings, the whole set firmly on a revolving shaft, so that many sections may be cnt from a tube simultaneously, or

nearly so. 4

It is evident, however, that lother modes of severing the tube will answer in practising mypinvention'. 'Each of these sect-ions of the tube is .then made into the form of an eyelet by means of ya punchvan'd die. Itis evident that by interposing between the disk-cutters rings of greater or less thickness,l the cutters 'may be'adjusted nearer to or farther apart from each other, to admit of cutting from the tube sections of whatever length may be required. A i j t l Constructing eyelets from a tube has the further advantage over their formation from a plate, in that they can be made of any length from a tube, while the attenuation of the, metal consequent upon strikingthem from a plate, limits the length to which they can be so formed, as will be readily understood.

I claim, as a new method of manufacturing eyelets, the ycuttingof sec-tions from a. metal tube, and then forming theseinto shape, substantially as' described.

' eno. B. BRAYTON.

D Witnesses:

F. GoULjD, J. B. Cnosnr.

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