US2190878A - Wrist watch bracelet - Google Patents

Description

Feb.'20, 1940. T LUNDMAN 2,190,878

WRIST WATCH BRACELET Filed Feb. 9, 1938.

f, Znmzfb .77]260 070/26 Zz/70712905 A sy if Him/my@ 7m/Mak Patented Feb.\20, 1940 UNITED 'STATES PATENT oFFicE 7 y 2,190,878 WRIST WATCH BRACELET Theodore Lundman, Hopkins, Application February 9, 1938, Serial No. 189,604

1 claim;

My invention relates to a bracelet especially adapted for holding `wrist watches and which is of the safety type, that is, one that is circum-` ferentially expansible and contractible. Generally stated, the invention consists .of the novel devices, combination of devices and arrangement l of parts hereinafter described and defined in the claim. l

In the accompanying drawing which illustrates v the invention, like characters indicate like parts throughout the several views: Referring to the drawing: Fig. 1 is a perspective showing the human hand by dotted lines, and showing two wrist watches l5 and braceletsone appliedto the wrist of the hand, and the other expanded for application to the hand; I I

Fig. 2 is a plan view showing the device on an enlarged' scale, some parts being broken away; Fig. 3 is a section taken on the line 3-3 of Fig. 2; I

Fig'. `4; is a `section taken on the line 4,-4 of Fig. 2; and

Fig. 5 is a section taken on the same lineas Fig. 2,. but on a smaller scale and showing the coupling elements of the bracelet extended.

The wrist watch, as shown, is indicated as an entiretyby the character 6. To lugs on theends of the wrist watch casing are attached exible main sections, shown as made up of link chains I and 8. The chain `8 is attached to one end of an inverted metal channel or` segmental coupling hood 9 that has sliding engagement with chan- `nels formed by flanges I0 of a correspondingly curved segmental couplingsegment II.

As best shown in Fig. 3, the coupling segment 9 has outturned anges 'I2 that slide in the channels formed by the flanges Il) .of segmental coupling segment II. The extending or expanding l0 sliding movement of the `segments, 9 and II is limited V byeng'agementv of stop lugs I3 and I4 respectively on the segments! and II. A pair of reversely curved, preferably flat sheet extension links I5 and I6 are hingedly connected at I1.

l5 The link I5 is pivotally connected at I8, to a lug` on the extended end of the coupling segment II; while the extended end of the link I'B is pivoted to the extended link of` the chain 'I. A leaf-like latch spring I9 is connected at one `end to the 27|, formed on the extendedend of the coupling segment 9. f I

When the bracelet is extended, asshown` in l Fig. 4, and at the left in Fig. l, the bracelet may be freely slipped over thehand, eitheronto .or off from the wrist, but the bracelet will remain as a com-plete band that will not accidentally fall oi from the hand. When the bracelet is to be contracted on to the wrist, the link I5 isturned overuinto the channel` of the joint segment II, l0 and the link IIi is pressed down on to the link I5;` andthen the links I5 and I6, thus forced together. are slid into the hood or` under the top plate of the coupling segment 9. The extent to which the bracelet will be contracted maybe varied by lli` e setting one or the other of the perforations or t notches 2U in engagement with the lock detent lug ZI of the coupling segment 9. Fig. 4 clearly `illustrates the latter noted adjustment, to wit:

an adjustment corresponding to that shown to 20 the right in Fig. 1, and also in Fig. 2. In all of the adjustments of the bracelet to the wrist, the folded links I5 and IS, and the main body of the spring latch I9, are covered by the hood of the coupling `segment 9, with only the extreme end 25 of the` latch I9 exposed.

It is important to note that when the bracelet is contracted onto the wrist, the leaf-like links I5l and I6, which are then folded together and against the bottom of the coupling segment II, 30 are forced into the segmental space formed betwen the overlying hood 9 and the said base forming lower segment II, and hence, cannot possi- I bly unfold to permitopening expansion of the bracelet. I Before the unfolding and expanding 35 movement can be produced the folded links` I5 and I6 must be` drawn out of the hood and then, of course, they can be folded or extended, as; shown in Fig. 5. U

e To release and unlock the bracelet for Vopening movement, or for readjustment, it isonly necessary to slightly press downward on the exposed end of the latch spring I9. i

By reference to the drawing, it will be seen that the couplingsegment II, on its convex surface, is channel shaped and aords a guide and keeper for the segment; and that the segment 9 is of inverted channel shape form and aiords a segmental hood to cover the curved links I5 and I6. I

This improved bracelet hasbeen made and found efficient for the purposes had in view.

What I claim is: I I H In a device of the kind described, a lower coupling segment having upwardly and inwardly turned vmarginal guide channel-forming anges, an upwardly bulged upper hood-forming segment having downwardly and outwardly turned marginal anges slidable in the channels formed by .f

the inturned flanges of said lower coupling segment, the said hood-forming upper segment being normally open at its bottom, said lower segment affording the bottom tosaid hood-forming segment when slid within the same, a link hingedly 10 connected to the extended end of said lower coupling segment, a second linkpivoted to the free end of said rst noted link, a flexible connection between the extended end of said second noted link and the extended end of said upper coupling segment, said two links being foldable together vand into `the channel of said lower coupling segment and then adapted to be slid under the hoodforming portion of said upper coupling segment,

and means for securing said two coupling segments in diierent adjustments withthe links folded asstated. r y

` THEODORE LUNDMAN;

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