US827164A

US827164A - Self-closing bracelet.

Info

Publication number: US827164A
Application number: US30588106A
Authority: US
Inventors: William I Macomber
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-03-13
Filing date: 1906-03-13
Publication date: 1906-07-31
Anticipated expiration: 1923-07-31

Description

bracelet.

NITEDsrArEs PATENT orrron f WILLIAM MACOMBER, or PROVIDENCE RHODE IISLAND.v f i lSELFcLc s|Ne'BRACELET. l

To all whom it may concern: V

Be it known that I, WILLIAMI. MAooM- BER, a citizen of the United States, residing at Providence, in the Statel of `Rhode Island, have invented a new and useful Improvement in Self-Closing Bracelets, of which the following is a specification. v

My invention consists in the improved construction of the spring-actuated joint of the bracelet, as hereinafter set forth.

In the accompanying drawings, Figure 1 represents a side view of a hollow wire bracelet to which my improvement is applied.

Fig. 2 re resentsan enlarged longitudinal section o` the closed spring-actuated joint, taken in the plane of the arms of the bracelet. Fig. 3 represents a longitudinal section of the same, taken in the lline 3 v3 of Fig. 2. Fig. 4 represents a section, as in Fig. 2, with the arms of the bracelet opened. Fig. 5

represents a transverse section taken in the line 5 5 of Fig. 3. Fig. '6 represents a side view of the sliding yoke, which serves to hold the actuating-spring of the braceletjoint. Fig. 7 represents an edge view of the same. Fig. 8 represents ac' side view of the actuating-spring. Fig. 9 represents an edge view of the piece of groovedstock from which the joint-piecesl are to be formed. Fig. 10 represents a transversesection of the same. Fig. 11 represents an edge lview showing a properly-bent piece of stock of sufficient length to make both joint-pieces of a Fig. 12 represents the same edge view, showing the portions to be removed from the blank shown in Fig. 11 preparatory to the separation 'of the joint-pieces. Fig. 13v represents the completely-formed jointpilces with their inner ends abutting each ot er.

In the drawings, A represents one of the hollow arms of the bracelet, and B the other hollow arm, the said bracelet being provided with the improved self-closing joint C. The joint-piece D is soldered rmly in the cavity of the` arm A of the bracelet and is constructed as shown in Fig. 13, being provided with the perforation c for the pivot t and the cut-away recess c, whichis adapted to receive the projecting lip d of the opposite joint-piece E, the said lip d serving to close the inner side of the joint C when the arms A and B of the bracelet are thrown open, as shown in Fig. 4. To the joint-piece D is pivoted the yoke F, the curved arms e e of which are adapted to slide loosely in the curved groovesl ff, formed inthe opposite Patented Juiy'enieoe.: i`

edges vof thejolnt-piece E. The joint-.piece j E is providedwith the v cavity q, which is adaptedv to receive and holdthe actuatingspring G, theouter end of thesaid spring being held in contact with the cross-bar h of the said yoke F, so that the expansion of the said spring G will serve lto draw the innerv ends of the joint-pieces D and E forcibly together, and thuscause the closing of the arms of the bracelet. bracelet arebeing opened, as shownin Fig.' 4, the projecting end L of the joint-piece D will act as a lever to cause a drawing action upon the yoke F and the compression of the spring G, the corner j constituting the fulcrum for the turning movement.

1 Heretofore in self-closing bracelets of this class the turning-fulcrum'has'been located at the abutting ends c Ic of the hollow arms of the bracelet, with resultingwear and injury; but in my invention the wear does not come upon the said hollow arms, but upon the joint-pieces D and E, which are soldered in the cavities of the said arms in such a posi- When the arms of the /4 tion that the abutting ends c 7c of the hollow arms A and B lie in about the plane of the centerof the pivot-pint, as shown in Figs. 2 and 3, whereby when the arms A and B are being opened the outer edge of the arm A will be drawn inward, as shown in Fig. 4. The projecting end i ofthe joint-piece D bears against the face o of the joint-piece E, which face is back 'of the plane of the end of the hollow arm B.

In the manufacture of the joint-pieces D and E,'I'1'irst form a bar H of suitable crosssection, having the opposite longitudinal grooves e e, as shown in Figs. 9 and 10, and then bend the said bar in longitudinally- The stock is then cut away at fm, and n to form the jointpieces.

I claim as my invention- 1. In a self-closing bracelet, the combination of a joint-piece provided with opposite IOO grooves, the yoke held in the said grooves, 'i

and the actuating-spring, with the opposite joint-piece, pivoted to the yoke and adapted to fu j oint-piece when the arms of the bracelet are being opened. v 2. In a self-closing bracelet, the combina'- tion of the hollow arm of the bracelet the joint-piece provided with the grooves, and securedv in the said hollow arm which proy crum upon` the end of the grooved jects beyond the end of the said joint-piece, and the opposite joint-piece projecting beyond the end ofthe hollow arm to which it is secured, with the yoke-piece pivoted to the said projecting joint-piece, and held in the grooves of the opposite joint-piece, and the actuating-spring held in the said yoke.

3. In a self-closing bracelet, the combination of the hollow arm of the bracelet the joint-piece provided With the grooves and the provided With a recess at its inner side adapted to receive the said projecting li and projecting beyond the end of the hollgow arm to Which it is secured, With the yoke-piece pivoted to the said projecting joint-piece, and held in the grooves of the opposite jointpiece, and the actuating-spring held in the said yoke.

WILLIAM I. MACOMBER.

Witnesses:

SOCRATES ScHoLFrELD, 'JOHN S. LYNCH.