US104442A

US104442A - Improved machine for forming eyelet-stock

Info

Publication number: US104442A
Authority: US
Publication date: 1870-06-21
Anticipated expiration: 1887-06-21

Description

w To all euhowii 'may 'c'oluzernt'` mim 51mg @anni (Elmira THOMAS Gitarren, or PROVIDENCE, RHODE ISLAND. i

Y Letters Patent No. 104,442, dated Jane 21, 1.870.

IMIPIROVP`IISAS3H1CNE` FOR FORM-ING- EYELET-'STOCK `v The iohedulerefen'd to in these Lettere Patent making parl: of the same.

Beit known that I, THOMAS G ARRIGK, of Provihdence, `in the county of Providence` and State of Rhode Island, have invented `certain Improvements 1nMachines\forPreparingEyelet-Stoclr, of which the "followingis aspeeication, reference being had to the I y accompanying drawing. i

i l/Iy invention relates to the manufacture of eyelets;

an i

The invention consists in a machine cti-novel? con-` struction for lslitting the sheet metal into strips of pe-` culiar form, to form what is technically termed eyelet stock, as hereinafter morefully explained. y

`Figure lis a front elevation; "Figure2, a verticaltransversesection; and

Figure 3 an end elevation-of my improved machine. In4 manufacturing eyelets, it is customary to slit s `the sheet metal from which they are 4formed into siraightstrips, after 'whichthey` are notched at interlvals along each edge, a large portion` of the metal be- `ing thus wasted.

My invention has for its object the cutting ofthe sheet i metal into strips of such a form as to prevent, or greatly lessenthis waste. To do this, I make the strips in the form represented by iig. 4, and to aecomplishths result I` construct a machine consisting of a frame, A,

having mounted thereintwo rolls, B and O, as shown i "in iig. 1, these rolls being geared together by spur.-V

wheels, D and E, as' is l usual in machines of thischarf acter.

` These rolls areformed withl a series of alternate elevations and depresssions, the `former being repre i sented by b, and the' latter by c, of g. 1.

f These depressions are made .in the form of a row of circles, united by narrow channels,so that, if spread ont `in a straight line, a Vrow of` them would` present the form representedby iig. 4. i l y The elevations are the exact counterparts oi' thei depressions, they being so arranged that the wide part of one comes directly opposite the narrow part' ofthe other, and vice versa.

. The two rolls A andvB are made precisely alike, but

are so arranged in relation to each other that the elevations on each shall fit into the recesses or depressions of the other.

In the rear of these rolls are locatedtwo round bars or rolls, F and G, the former being provided, near Veach end, with an adjustable collar, h, which can be adjusted to fit sheets of various widths.

In opelation, the sheet of metal is brought under v the bar or roll G, thence` up over the bar or roll F,

and from thence between the slitting-rolls B and C,

which, being set in motion, cut it intolstrps of a'form corresponding to the form of the depressions and elevations on the rolls, fig. 4 representing one of the strips after being cnt.

In this manner the entire sheet isicut into strips of the form shown, by being once passed through the rolls, and, as the wide parts in one strip come opposite the narrow parts of theadjoining strip, it is ob-V vious that more strips can be had from a sheet of given width, and that there is much less waste of material in forming the eyelets from such strips than when cut into strips of uniform width, according to the old plea Having thus described my invention, What Iclaim is- 'lhe rolls B G, provided with the elevations and depressions of the form substantially as described, said rolls being so arranged that the elevations on one shall f it into the depressionson the other, for the purpose of slitting the sheets of metal into strips, as set forth.

THOMAS GARRICK. Witnesses:

WILLIAM W. RICKARD, RoswELL R. RICKAR'D.