US222441A - Improvement in separable buttons or studs - Google Patents

Description

P. P. BARNBY. Separable Button or Stud.

No. 222,441. Patented Dec. 9,1879.

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l I (ll emlllllldd NJEERS. FHUTO-LITNQGMPHER. WASHINGTON. D C.

UETTEE STATES PATENT OEETCE.

FRANK P. BARNEY, OF NORTON MASSACHUSETT IMPROVEMENT IN SEPARABLE BUTTONS OR STUDS.

Specification forming part of Letters Patent No. 222,441. dated December 9, 1879; application tiled September 13, 1879.

` To all whom it may concern:

Be it known that I, FRANK P. BARNEY, of Norton, in the county of Bristol and State of Massachusetts, have invented new and useful Improvements in -Separable Buttons or Studs,

of which the following is a speciication.

My invention relates to certain improvements in that class of buttons and studs known as separable buttons and studs, for

which Letters Patent of the United Statesy were granted to me .under date of July 8, 1879, No. 2l7,3l8, as fully described herein- ,j after, and shown in the accompanying drawtions of the locking devices and actuatingspring, showing themethod of applying theenlarging-cylinder to the push-rod of said devices. Figs. 9 and l() are elevations ofthe sleeve and post, respectively.

In the above igures of drawings similar `letters of reference are employed to indicate like parts wherever such may occur.

AA Arepresents the button or stud section proper, which `'may be of any desired shape, to

which is applied the patch or re-euforce plate' B, having an offset stamped ont to form the anchor-shaped bearing b and bridge b', adapted to support, and upon which slides the locking-anchor and push-rod ot' the locking devices D. Instead of making this bearing of oval or other shape, with recesses,'as described in the aboverecitedrLetters Batent, I make it of a shape corresponding to the locking-anchor on one side ofthe post, with the bridgeor eX- tension, upon which the post is seated, and I leave on the opposite side of the post a sutilcient amount ot metal projecting above the face of the patch to form two abutments, b2, on opposite sides of the path in which the push-rod reciprocates or slides, against which the free end ot' the actuating-spring d2 abuts that is to say, the two projecting studs b2 serve as bearings for the free endof the actuatingspring d2, which is here coiled around the push-rod.

C represents the post, which may be a round one, or it may be made of any other desired shape. I prefer, however, in buttons or studs of small dimensions to employ a post having the form ot' an ellipse or double convex, as I have found by experience that this form of post is more desirable in studs of small dimensions, taking up much less room than any other form of post relatively to its strength or capacity of resisting a given amount of strain.

The post C is provided with a recess, c, of suflcient depth to adapt it to straddle the bridge b of the. bearing and permit the free the projecting end of said spring, as shown in l Figs. 6, 7, and 8. The inner or free end of the spring d2 abuts against the projecting studs b2 formed on the plate B, as above related.

In studs of small dimensions, where the space for. arranging the lookin g devices is li'inited,l may dispense with the abutments b2 and -use the post for an abutment to the spring,

and for this reasonIalso use theform of spring above described, as the limited area of the section A in small studs prevents the use of the ordinary form of spring, as shown in my former Letters Patent, or at least that such form of spring is not as practicable as the coiled spring `the edge of the button, for two reasons: first,

to give the outer end of said rod, to which the pressure for unlocking the sections is applied,

an enlarged bearing-surface; and, secondly, to enable the manufacturer to make the push-rod and locking lever or anchor of base metal, using fine metal only for that part of the pushrod which it is designed to enlarge, and which projects beyond the edge of the button. In order to el'ect these two results economically and eiectually without having recourse to soldering or brazing, which in articles ofjewelry require the employment of' skilled mechanics, I employ the following method, referring more particularly to Figs. 6, 7, and 8: I make the push-rod and its locking-anchor of any suita ble hard base metal, and form upon the outer end which is to be enlarged a series of teeth or serrations, as shown at D. Then I take a hollow cylinder of tine metal, open at both ends, and slip it onto the end of the push-rod, and by means ot' a suitable tool I press or swage the cylinder D2 onto the rod, so as to force the softer lnetal of the cylinder into the interstices between the teeth and serrations D on the push-rod, as shown by Figs. 7 and 8, by means of which said cylinder is firmly attached to the push-rod end and made to practically form an integral part thereof', the parts being thus more intimately connected together than by soldering, and at considerable less expense and labor.

Under some circumstances, especially in the high-priced class of this kind of jewelry, it is also desirable that the end of the push-rod should be covered from view bythe ner metal, in which case I form the end of the push-rod tapering or attenuated outwardly, and the opening in the cylinder l)2 of a corresponding taper, so as to leave an increased thickness of metal at the outer end, and when swaged onto the end of the push-rod the cylinder will be slightly elongated, and its outer end made to overlap or close over the end ot' the push-rod, thus hiding it from view.

E represents the other section of the button or stud, carrying a double convex or elliptical sleeve, F, adapted to lit and slide over the double convex post C.

The sleeve has recesses f on opposite sides, with which engage the side arms ot' (it'I may so express it) the linkes of the anchor d', and a recess, f', of sufficient depth to straddle the push-rod d and the bridge b of the bea-ring b. When there are no abutnients employed for the coiled springthe width of therecessf and its depth are such as to adapt the sleeve to straddle the spring and permit it to abut against the post C.

Having now described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a separable button in which the two sections are locked together by a locking-lever under the action of a spring, the combinanation, with the section A, of the plate B, having the anchor-shaped odset b and projecting abutments b2, to form a bearing for the locking devices, a seat for the post, and an abutment for the actuating-spring, as described.

2. In a separable button, the combination, with the section A, its plate B, having the bearings b b and the abntments b2, and the post C, ot' the locking-anchor D and springdz, coiled around the push-rod d of said anchor, all arranged and operating substantially as described, for the purpose specified.

3. In a separable button, the combination, with the section A, its plate B, having the bearings b b and the abntments b2, the post O, the anchor D, and the spring d, coiled around the push-rod of said anchor, and having its outer end rigidly connected therewith and its inner or free end made to bear upon said abutments b2 of the section E and its sleeve F, all arranged and operating substantially as described, for the purpose specited.

4. In a separable button or stud, the combination, with the push-rod ot' the locking devices, having its outer end serrated or provided with teeth, of a hollow cylinder surrounding said serrated end, as and forthe purpose specilied.

5. In a separable button'or stud, the combination, with the push-rod ot' the locking de- FRANK P. BARNEY.

Witnesses:

J. E. WILBAR, EMMA E. PRAY.

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