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Publication numberUS1754959 A
Publication typeGrant
Publication dateApr 15, 1930
Filing dateAug 12, 1929
Priority dateAug 12, 1929
Publication numberUS 1754959 A, US 1754959A, US-A-1754959, US1754959 A, US1754959A
InventorsDimitry F Matushenko
Original AssigneeDimitry F Matushenko
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Bracelet lock
US 1754959 A
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Description  (OCR text may contain errors)

April 15, 1930. D. F. MA'fUSHENKO BRACELET LOVCK Filed Aug 12. 1.929

.D/M/TR) I MA TUSHE/V/(O INVENTOR Y 7% 41mm ATTOR N EY Patented Apr. 15, 1930 UNITED STATES DIKITBY I. MATUSHENKO, OF BROOKLYN, NEW YORK nmcnm'r LOCK Application filed August 12, ms. Serial. No. 385,104.

My invention relates to bracelet locks and has a particular reference to devices for rock 1 ing together two halves of a bracelet on a I In order to be convenient for use and pracwearer s arm.

tical,a locking device must be very small, it must not be too conspicuous on a piece of jewelry and, at the same time, it must be so constructed as to be easily locked or un- 10 locked by the user.

Ordinary bracelet locks,'whi1e fulfilling the above requirements more or less satisfactorily, are usually very unreliable, quickly] wear out and often become accidentally unl locked, causing a loss of valuable jewelry.

In order to provide a reliable lock which will be safe against an accidental'unlocking vwhile in use, I devised a locking device wit a double locking feature, so that in case of failure of one locking member the other will still retain the parts of the bracelet joined to ether, thereby preventing its ening.

y invention is more fully described in the accompanying specification and drawing in which- Fig. 1 isa sectional elevation of my lock shown in a large scale, Fig. 2 is an elevation of same in a locked position, and Fig.3 is a to view of the body of the lock.

. y lock consists of a body or block 1 with a slot 2 in the middle forming walls 3. A hole is rovided at one end for a pin 4 with which t e body 1 is attached to one end of a bracelet 5 a portion of which is only shown in Fig. 1. The walls 3 have a slot 6 in the middle ada ted to engage a pin 7 of the other end of the racelet.

An inner closing or looking bar 8 is pivotllly mounted on a pin 9 fastened in the walls 3. A spring 10 extendingjrom the tail end of the bar 8 tends. to keep it in an open osition as shown in Fig. 1. The other end 0 this bar has a hole 11 adapted to slidably fit over a pin 12 whichis fastened with its lower end in the body 1,. I The upper end of this pin has a notch 13 and is tapered to a sharp edge. The pin 12 is so placed that the inner edge of the hole 11 meets the tapered surface as shown in -'Fi 1, the end of the bar 8 being shown with otted lines at the moment when it comes in contact with the tapered end of the in. By applying pressure to the'end of the ar, the edge of the hole 11 forces the pin to deflect to a position indicated with dotted hnes in Fig. 1, until it deflects sufiiciently to pass through the hole 11. The pin snaps back' when the notch 13 comes against the edge of the hole 11 thereby retaining the bar 8 in a closed or operative position as shown in Fig. 2. The notch 13 forms a book 14 which holds the edge of the hole 11.

An outer closing or locking bar 15 is pivotally mounted on' a pin 16 fastened in .the walls 3. This bar is curved so as to cover the curved walls 3 of the block 1, while the bar 8 fits inside of the slot 2. The bar 15 has a knob. 17 near the end for convenience in opening and closing it. At its free end it is provided with a notch 18 forming a tooth 19 adapted to engage a corresponding notch 20 at the end of the block 1. The bar 15 is made of a resilient material and shaped so that it fits tightly in the notch 20, and a certain pressure is required to force the tooth over the edge of the notch 20 in closing or opening the bar 15.

In Fig. 2 both'locking bars are shown in a closed or operating position. In order to open the lock, the bar 15 is forced open by edge 19- to slide out of the notch 20. The bar 20 isthen turned open into inoperating position 'as shown in Fig. 1

The end of the pin 12 is then pushed out ward bending the pin, until the edge 13 clears the edge of the hole 11. The bar 8 then snaps open under action of the spring 10, taking a position shown in Fig. 1. The pin 7 of the bracelet 5 can then be removed from the slot 6 and moved out of the lock, turning the bars 8 and 15 farther out if necessary.

Important advantages of my lock are that it'has a double locking feature, there being two lockin bars, so that if the outer bar becomes acci entally unlocked, the ends of the bracelet will still remain joined together, the pin 7 of the bracelet being held in position by the additional locking bar 8.

I claim as my invention:

1. In a bracelet lock, the combination with pushingback the knob 17 thereby causmg the 1,

a block adapted be attached to one end of a bracelet and provided with a slot adapted to engage the other end of said bracelet, of

an inner bar pivotally mounted on said block and adapted'to cover said slot with said other end of said bracelet, means to resilientl retain the free end of said bar when sai' bar is in an operating position, an outer closing bar for said slot and said inner bar, means to pivotally support said outer bar on said block, and means to resilientl retain the free end of said outer bar on sai block.

2. In a bracelet lock, the combination with a block adapted to be attached to one end of a bracelet, said block being provided with a longitudinal slot, the walls of said block on the sides of said slot being provided with a transverse slot adapted to receive the other end of said bracelet, an inner bar adapted to slide adapted to retain the free end of said bar between said walls and to cover said other end of the braceletin said transverse slot, one end of said bar being pivotally mounted between said walls, a resilient member on said block when said bar is in an operating position,

w an outer bar adapted to cover said inner bar,

one end of said outer bar being pivotally supported between said walls, the free end of said outer bar being adapted to resiliently engage said block. a

3. n a bracelet lock, the combination with I a block adapted to be attached to one end of a bracelet, said block bein provided with a lo 'tudinal slot, the we of said slot in s block being provided with a transverse slot adapted'to receive theother end of said bracelet, an inner bar adapted to cover said transverse slot with said other-end of the bracelet, one end of said bar being pivotall mounted on-said block, a pin on said bloc ada ted to resilientl engage the free end of said bar, a second ar pivotally supported on said block and adapted to cover said inner bar, and means to resilientl retain the free end of said outer bar on sai block.

In testimon whereof I afiix m si ature.

DIMI RY F. MATUSfiE KO.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2453993 *Mar 16, 1945Nov 16, 1948Kreisler Mfg Corp JacquesConnector for bracelets, wrist watch straps, etc.
US2633619 *May 14, 1949Apr 7, 1953Jacoby BenderCenter catch clasp
US3133331 *Apr 8, 1963May 19, 1964Gaston MarticorenaSnap-lock device for interchanging jewelry
US3183568 *Sep 17, 1962May 18, 1965Koch & Sons Inc HCanopy release
US4270249 *Feb 5, 1979Jun 2, 1981Admiral Watchband Co., Inc.Clasp for a bracelet or the like
US4774743 *Jul 14, 1987Oct 4, 1988The Napier Co.Jewelry clasp
US6273089 *Apr 2, 1999Aug 14, 2001Integrated Medical Systems, Inc.Automatic mechanical lock down for transportable life support system
WO1989000650A1 *Jul 11, 1988Jan 26, 1989Napier CoJewelry clasp
Classifications
U.S. Classification24/601.5, 24/906, 24/600.1
International ClassificationA44C11/02, A44C5/20
Cooperative ClassificationA44C5/2042, Y10S24/906
European ClassificationA44C5/20F