US346661A

US346661A - Island

Info

Publication number: US346661A
Authority: US
Publication date: 1886-08-03
Anticipated expiration: 1903-08-03

Description

(No Model.)

G. H. KNIGHT.

} JEWELERS STOGK. No. 346,661. Patented Aug. 3, 1886. Fail, I Fay],

kolwvd l-m.

UNITEI) STATES PATENT OFFICE.

GEORGE H. KNIGHT, OF PROVIDENCE, nnonn ISLAND.

J EWELERS STOCK.

SPECIFICATION forming part of Letters Patent No. 346,661, dated August 3, 1886.

Application filed April 27, rsss. Serial No.163,500. (No model.)

T all zohom it may concern..-

Be it known that I, GEORGE H. KNIGHT,

of Providence, in the county of Providence,

.State of Rhode' Island, have invented a certain new and useful Improvement in Jewelers Stock, of which the following is a despecification, in whichscription sufliciently full, clear, and exact to enable any person skilled in the art or science to which :said invention appertains to make and use the same, reference being bad to the accompanying'drawihgs, forming part of this I Figures 1 and 3 are front elevations of the dies used inldrawing or manufacturing my improved stock; Figs. 2 and 4, respectively,

rear elevations of the same, represented as reversed; Fig. 5, aperspective view of the blank from which the covering of the stock is formed; Fig. 6, a like view showingthe blank after its edges have been turned by the first die; Fig.

7, a perspective view showing'a portion of the body before it is inserted in the-covering;

Fig. 8, a like view's howing the body inserted in the covering, the edges of the covering being represented as having been turned by the second die; Fig. 9,'a perspective view showing a piece of the completed stock, the edges of the covering being represented as having been turned by the third or lastdie; and Figs. 10 and 11, respectively, perspective views of a ring and bracelet made of my improved stock. In Figs. 5, 6, 7, 8, and 9 the parts are represented as enlarged. p

Like letters of reference indicate corresponding parts in the different figures of the drawlngs. Heretofore in the manufacture of bracelets from plated stock it has been the practice to bend up a thin piece of plated stock at its opposite edges, thus forming a hollow beaded edge, and then 'to combine therewith another piece of plated stock, the base-metal edges of which were concealed by the hollow beaded edge of the former piece, as shown. in the Reissned Patent No. 4,192, dated December 6, 1870; but. such combination'of separate pieces of plated stock have necessarily been made in single bracelet lengths, and not in a contin'nous strip of stock adapted to be cut up into bracelet lengths, or in lengths suitable to form rings or other articlesof jewelry, for the reason that a combined strip so formed having a hollow beaded edge is not adapted for' the striking up or'bending requiredto pro-- duce such braceletsor rings, so that in practice the plated strips are separately struck up or. bent prior to combination with each other.

I have,.however, discovered that by closing the turned edge completely together upon itself over the base-metal edge of the inclosed body-stri p, such combined strips when out into suitable lengths to form bracelets, rings, &c.,

'can be readily bent to the desired circular or curved form without distorting the turned edge of the strip. I am therefore enabled to manufacturelong strips of such stock for sale to manufacturing-jewelers, to be cut up and bent into desired forms, and thus produceanew article of trade.

' In the drawings, Figs. 1 and 2-represent front and rear views'of the first die for drawing the stock to form the turned edge, A being the upper, and B the lower section, of the same, which are attached to each other by means of screws :10.- The upper section is provided with a transversely-arranged rectangular projection, m, on its lower side, the lower section being provided with a corresponding socket, d, for receiving the same, the socket,

being slightly larger than the projection, thus leaving a U shaped opening-between the proj ection and the bottom and sides of the socket,

deeper or extending, respectively, below the 5 bottoms of the openings tl. The openings vt l d are respectively flared or enlarged at the front of the die to form months for receiving the stock, as shown in Figs. 1 and 3. The covering E is composed of a strip of sheet metal,

plated on its under or exposed side, and the body H of a thin bar of metal, correspondingly plated on its upper or exposed side, and in making the stock the coveringstrip E is drawn through the first die, or die shown in Fig. 1, thereby turning up a flange at either edge, as shown atff in Fig. 6. The bar H, of which the body is composed, is then placed on the covering-strip E, between the upturned flanges ff, after which both of these parts are drawn through the second die, or die having the rounded grooves h, as shown in Fig. 3, thereby curving the edges f inwardly onto the body H, as shown in Fig. 8. The stock is next drawn through the third die, or die having the angular grooves 21, by which the curved flanges f are folded closely in rectangular form and firmly set down onto the body H, the unplated thin edges, or edges proper of the covering, resting on the top of the body H, and being concealed, as shown in Fig. 9. It will be readily seen that the stock so formed will have a practically solid edge, the turned edge being closed against its own base-metal side without intervening vacant space, as shown in Fig. 9. The combined strip of stock will therefore admit of being bent or formed in dies like an integrally-formed piece ofstock, so that bracelets, rings, and other articles of jewelry can be readily struck up and formed therefrom.

I do not claim the combination of the bodyplate with the covering-plate when the covering-plate forms a hollow beaded edge, as shown in the Reissued Patent N 0. 4,192, dated December 6, 1870; neither do I claim the combination of the c0vering-plate with turned edges iuclosinga wire, as shown in Patent No. 264,541, dated September 19, 1882..

I do not confine myself to drawing the stock through dies as described, as the same may be rolled, if preferred.

Having thus explained my I claim is The improved jewelers stock herein described, consisting of the coveringf, plated on its under or exposed side, and the body H, plated on its upper or exposed side, said parts being united by the flangesf, turned onto the body in such a manner as to conceal the edges of the body and the edges proper of the covering, and to form a practically solid angular edge along the covering above the body, substantially as described.

GEORGE H. KNIGHT.

invention, what Witnesses:

JOHN F. CosGRovE, THOMAS S. LEE.