USRE851E - Island - Google Patents

Description

To all whom it 11mg/ concern:

of Wickford, and State of new and useful Improvement of Manufacturing Lockets and Similar Metallic Cases; and I do hereby declare that the t'ollowing is a full, w of the same, reference being had to the accompanying drawings, and to the letters e ice marked thereon.

alike in general form, held shut by a spring-catch, a metallic ring so as to resemble in material, an ordinary watch-case. `Each side of the locket consists, generally, of two partsa ringbase, plate that rIhe latter is of thc locket glass.

of tbe'locket was generally formed of two l ii'eces of the forni represented at Figures A, l5, and C. One of solid ring,Fig.v tion required, as shown at air,

ring form' and The other piece, called the tield-piece, wire, a ring The two pieces were as represented at structed in this manner are account of the cost of UNITED STATES PATENT OEEICE. y

cnAaLEs c. Bronnen, on w1 GKFORD, RHODE ISLAND.

' MODE 6F coNsTaUo-rmc Locker-s.`

Speedtest ion 'fori-urn g Be it known that LCHRLES G. BLooMEu, in the county of Washington Rhode Island, have invented ain the Method di clear, and 'exact description of refer Lockets are formed of two halves or s ides,

connected by a hinge, yand suspended by passed through a stud or knob,

form, and finish commonly called the rhin and the G forms the outer case or baek frequently replaced on one side by a glass similar to a watch- Irior to my invention the rim of each side i these pieces consisted of a i A, formed of wire of the secbent into a soldered where the ends met'. Fig. B, which is commonly was formed of! tlat as shown in section at b b, also bent into form and soldered 'where the ends met. then soldered together, Fig'. C. Locket-rimsconobjectionable on manufacture and the weight of metal required; hence I devised a sheet-metal rim for lockets and similar meta-llic cases, in which the ring and field-piece are ot' vonepiece of metal. p tutes the subject of Letters even date herewith; and the object of the invention which tion is a cheap and eicient means ot' giving th are generally required to have two forms alike externally, field-piece. at Figs. 3 and 4 inthe of these forms are made from pieces of This new rim consti- Patent bearing is the subject of this specifrcao Locket-rims but differing in the form o f the These two forms are represented annexed drawings. Both sheet part of Leiters PatentNo. 17,137, ated April Q8, 1357 November 15. 1359.

' may flat, thin piece or are provided and are press.

finished rim,the such that in of the piece the iiat field-piece i of Figi 3,4 while of the lower die is such that it gathers in the cylindrical part ot' the as represented in section at these parts consists lof a matrix of steel, F, to receive a plug, and to give form to the'exterior of the rim.

which constitutes limits the distance be d and the plug is of such length that bottom of the cavity, the counterpart ot the The third part of the dies e^l or follower, H, whose wer face is the counterpart of the face of the rIhis plug is of such size that it of the matrix with a cavity The upper the second to which the pressed; when it is in pla-ee the unfilled, in the matrix exterior of the rim. consists' of a plug of st field-piece. can enter freely into the cavity to compress the rim therein.

In using these dies the sheet metal, prethe ring Fig. 2,is placed the matrix with its cylindrical part down- H is then depressed upon and the action ot" the dies,

viously formed into i ward.

the ring of met-.thunder assumes the required form.

set of dies .are required, of the exterior sur form. same matrix, F, Fig. 8, the preceding one. In this case the plug first and replaced by another, G', whose upper face is suited to the greater tance to which the vused is removed lReissue No. 8T I ,dated metal ot' the form represented at Fig. 2, which desirable manner kfrom a he made in any sheet of metal.V In order to forni the rim, Fig.

The form ot the acting actingnpon Fig. 2 it piece I prefer to construct Fig. 7

formed therein face of this plug, part of the dies,

field-piece of the rim can The follower by the assistance of a suitable press,

In order to forni the rim whose field-piece i field-piece is 3, a set of dies4 fitted into a suitable diefacespof these es are those ot' the exterior surfaces of the face of the upper die being 'the gatheredin part gives itthe shape -of the vface Fig. 2, and gives the shape of the exteriorring of Fig. 3.

the dies in three parts, One of Fig. 4, a second faces are those face of this finished rim, the face ot' the upper die being sdc that in acting upon the iiat gives it the shape of the depressed field-piece of Fig. 4, while thc'lower die simply supports the piece of metal without changing its In uishin g this rim I' prefer to use the as is used for forming of ng. 3 it to he depressed, and the follower first used is replaced f not claim to be the first who used die's for such b vanother, H', whose face is the counterpart l purposes; but I believe that I am the first of the depressed field-piece. Il person ivho discovered that pieces of thin or In using these dies alocketLrim, to which sheet meta-1 could be bent and pressed by the form has been imparted by theirst set of dies, operation of dies into the form of a rim for is inserted in the matrix and the follower is lockets and similar metallic cases-such, for

depressed upon it, as at the preceding operaexample, as those represented at Figs.3 and 4.

tion, and the metal, `under the action of the I What I claim, therefore, as my invention,

dies, assumes the required form. e and desire to secure by Letters Patent, is-.

Although my invention does not extend to The method of imparting the finished shape the method of manufacturing the piece repreto case-rims of sheet or thin metal in which sented at Fig. 2, I deem it proper to state that I the external ring and field-piece are one piece lthe most convenient method of producing it y of metal by means of dies, substantially as with which I am acquainted is to act upon a. I herein setforth circular planchet-such as is represented at Intestiinony 'whereof 'I have hereunto sul Fig. 1--b`57 means of a pair of dies of suitable sciibed my name. f

form.

' I am aware that it has been customary long y CHARLES G BLOOMER' prior to the date of my invention to use dies Witnesses:

of -various forms for actingupon and giving g WILLIAM H. CoNGDoN,

shape to thin or sheet metal, and therefore. do i JAMES EDWARDS.

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