US672884A - Eyelet-setting tool. - Google Patents

Description

No. 672,884. Pa ten ted Apr. 30, I90].

W. E. BENNETT.

.EYELET SETTING TOOL.

(Application filed Oct. 22, 1900.)

(No Model.)

m: uonms PETER: w. PubTo-uwo. WASKINGTON o c UNITED STATES PATENT OFFICE.

WALTER E. BENNETT, OF PORTSMOUTH, NEW HAMPSHIRE, ASSIGNOR TO THE MORLEY BUTTON MANUFACTURING COMPANY, OF SACO, MAINE, AND BOSTON, MASSACHUSETTS.

EYVELET-SETTING TOOL.

SPECIFICATION forming part of Letters Patent No. 672.884, dated April 30, 1901.

Application filed October 22, 1900- Serial No. 33,840. (No model.)

To all whom it may concern.- scoring or splitting operation is begun. Figs. Be it known that I, WALTER E. BENNETT, 4, 5, and 6 are views of modified forms of a citizen of the United States, residing at tools embodying my invention. Portsmouth, in the county of Bockingham As the tool shown in Figs. 1, 2, and 3 is a 5 and State of New Hampshire, have invented practicable and serviceable form, I will ada new and useful Improvement in Eyelet-Setdress my description particularly to that form. ting Tools, of which the following is a speci- The shaft or rod A is adapted to fit into an flcation. eyelet setting machine. B is a mandrel My invention relates to eyelet-setting dewhich enters the tube of an eyelet and scores to vices; and its object is to provide 'a tool and splits the end of the tube in the manner adapted for use in eyelet-setting machines or hereinafter set forth. The mandrel B tapers in hand eyelet setting instruments which from its base to its end, being conical in shall score or split the end of the tube of the shape at its base or thick end and for about eyelet where the same is to be upset and a third of the way out from the base or any I5 flanged at regular and equal intervals and suitable distance to insure acomplete roundshall then upset and flange the end of the ing out of the eyelet when formed, then betube when it is so split. With the eyelet-setcoming pyramidal in shape at the middle part ting tools now in use a smooth protuberance and conical again at the small end. The pyror mandrel circular in section and usually amid part may present any number of an- 20 tapered enters the end of the tube of the eyegles or edges; but I find a hexagonal pyramid let, spreads and breaks the same, and then best suited for my purpose. Its faces are an annular shoulder or cup around the base cut from the cone of which the base part of of the protuberance or mandrel forms the the mandrel is 'a frustum, and its edges a a flange upon the eyelet. On wedging open are protractions of the surface of said cone.

25 the end of the tube of the eyelet the smooth These edges or projections a a score or cut round mandrel breaks or splits the tube in the end of the tube of the eyelet when the several places and Wherever the tube hapmandrelBis forced iutothe tube. Aboutthe pens to be weakest. As a result when the base of the mandrel B is the shoulder or anflange is formed and the eyelet set the breaks nular cup 1) for upsetting theend of the tube 30 in the flange are irregularly -and unevenly and forming the flange thereon. The tool is spaced and are more numerous in some eyeproportioned to the size of the eyelet which lets than in others, causing the work to look it is intended to set. The mode of operation more ragged and unsymmetrical than is deof my eyelet-setting tool is made clear by refsirable. These defects are overcome by the erence to Fig. 3, in which 0 is an eyelet of or- 35 use of my invention, whereby the end of the dinary shape, the mouth of the tube being tube of an eyelet may be scored or cut at reguslightly contracted. When the mandrel B lar and equal intervals as the mandrel enters enters the tube the scoring edges or projecit, thus evenly spacing the breaks in each tions a a meet the end of the tube. As the flange and making all eyelets uniform in apmandrel is forced in farther the scoring edges 40 pearance. a a cut or split the tube, as at c c, or by creas- The accompanying drawings illustrate, ening or scoring it so weaken it that when the larged, some of the embodiments of my inthick part of the mandrel B enters the latter vention. breaks or splits the tube in the places so Like parts are indicated by like letters in creased or scored. The rest of the operation 5 all the figures. is the same as is usual in eyelet-setting, the

Figure l is a view of one form of an eyeletend of the tube being upset and the flange setting tool embodying my invention. Fig. formed by the shoulder or cup I) by means of 2 is a vertical longitudinal section of the tool pressure. shown in Fig. 1. Fig. 3 shows an eyelet in I do not confine myself to a tool having a 50 which the tool is inserted part Way and the mandrel of the precise shape above described,

as it is obvious that my invention is capable of embodiment in many forms, some of which are sufficiently indicated in Figs. 4, 5, and 6. In Fig. 4 the pyramidal portion of the mandrel B extends to the small end. In Fig. 5 the same is true, while the base of the mandrel B is cylindrical instead of conical. In Fig. 6 the entire mandrel is shown as conical, While the scoring edges or projections consist of the peripheral webs or blades 0, a, longitudinally disposed upon the mandrel B. The essential thing is to provide scoring projections on the periphery of the mandrel adapted either to out the end of the tube of the eyelet or to crease it, so that it will split or break at the desired points. I make the mandrel circular in cross-section at the base and preferably conical, so as to spread the tube of the eyelet. The object of the circular base is to round out the eyelet-hole when the end of the eyelet is upset, since if the pyramidal form is carried to the base the hole of the eyelet set thereby, instead of being round, is polygonal in shape, corresponding to the shape of the mandrel. The diameter of the base, which determines the size and form of the eyelet-hole, should be greater than the greatest diametrical distance between the scoring projections to insure a smooth round eyelet. The tube of the eyelet commonly used is shaped like a frustum of a cone or conoid, and the scoring projections or edges of the tool need project only far enough to score or mark the small end of the tube of the eyelet, so as to weaken it and insure its breaking or splitting at the points of contact with said projections.

What I claim, and desire to secure by Letters Patent, is

1. In an eyelet setting tool, a mandrel adapted to enter the end of the tube of an eyelet and to spread the same, being circular in cross-section at its base and polygonal in cross-section a short distance above the base.

2. In an eyelet-settingtool, atapering mandrel conical in shape at its base and pyramidal in shape a short distance above the base.

3. In an eyelet-setting tool, a tapering mandrel adapted to enter the tube of an eyelet and to spread the same, said mandrel being circular in cross-section at its base and provided with peripheral longitudinal scoring edges above the base.

4:. In an eyelet-setting tool, a tapering mandrel, adapted to enter the end of the tube of an eyelet and to spread the same, said mandrel being circular in cross-section at and near the base, and being provided at its smaller part with a plurality of peripheral scoring edges arranged longitudinally upon, and at equal intervals about said mandrel.

5. In an eyelet-setting tool, a tapering mandrel adapted to enter the end of the tube of an eyelet and to spread the same, said mandrel being circular in cross-section at its base and provided with peripheral longitudinal scoring edges above the base, the diameter at the base being greater than the greatest diametrical distance between the scoring edges.

6. In an eyelet-setting tool, atapering mandrel circular in cross-section atits thick end, polygonal in cross-section at its middle part, and circular in cross-section at its small end.

7. In an eyelet-setting tool, a mandrel having a base part in the form of a cone, a middle part in the form of a pyramid, the surface of which if produced would be inscribed within the cone of the base, and a tip in the form of a cone the surface of which if produced would be inscribed within the pyramid of the middle part, substantially as described.

Signed by me at Portsmouth, New Hampshire, this 19th day of October, 1900.

WALTER E. BENNETT.

Witnesses: EDWARD H. ADAMS, KATHERINE R. MILLER.

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