US2530964A - Wrist band - Google Patents

Description

Nov. 21, 1950 T. HXRSCH 2,530,964

WRIST BAND Filed Dec. 15, 1946 #712 770? fifeapaze f/IP-iay 'arror/rzy Patented Nov. 21, 1950 UNITED STATES OFFRCE 3 Claims.

My invention relates to a new and useful improvement in a wrist band adapted for encircling the wrist and securing a wrist watch or other ornamental object in position on the wrist.

In such bands it is necessary that they be expandable to such an extent that the band may be taken off over the hand and placed on the wrist by having the hand inserted thcrethrough. However, it is also necessary that the separate parts which permit the expanding of the band, do not separate sufficiently to allow a hair on the hand or wrist to enter between these expandable parts and it is also desirable that the band, when in position, be so constructed that the hair on the wrist will not become caught between the separable parts. It is an object of the present invention to provide a wrist band in which the catching of a hair between the separable parts is avoided.

Another object of the invention is to provide a wrist band which may be easily and quickly taken apart and adjusted as to size.

Another object of the invention is the provision 01" a wrist band so constructed and arranged that it cannot be expanded beyond its limits so as to injure or damage the expanding parts.

Another object of the invention is the provision of a wrist band so constructed and arranged that it may be easily and quickly assembled and disassembled.

Ancther object of the invention is the provision of a wrist band which will be economical to manufacture, durable, light, highly efiicient in use and of pleasing appearance.

Other objects will appear hereinafter.

It is recognized that various modifications and changes may be made in the detail of structure illustrated without departing from the invention itself and it is intended that such variations and changes shall be embraced within the claims which form a part hereof. Forming a part of this specification are drawings in which,

Fig. 1 is a showing it attached to an ornament,

Fig. 2 is a longitudinal, fragmentary, vertical, sectional view of opposite ends of the invention with parts broken away,

Fig. 3 is a sectional view Fig. 2,

Fig. l is a fragmentary vertical sectional view of an end of the invention showing a modification,

Fig. 5 is a sectional view taken on line 5-5 of Fig. 4,

Fig. 6 is a plan view of a blank used on the modification.

taken on line 33 of perspective view of the invention In the drawings I have shown the wrist band l2 formed from a coil of resilient material and in Fig. 1, this band is illustrated as being connected to a wrist watch it having lugs M projecting outwardly therefrom and provided with a swingable eyelet i5.

An externally threaded core or stud H is provided. with a reduced neck its on which is formed a circumferentially extending peripheral rib IS. A coil l2, which is made from suitable resilient material is threaded onto a portion of the threaded part of the stud ll. Positioned within the coil i2 is a coil 2E! formed from suitable resilient material and oppositely wound to the coil l2. This coil 23 is positioned in embracing relation over the neck it and two coils 2i engage behind the peripheral rib Ill. A flexible non-resilient cord 22 is passed through the passage 23 formed in the neck l8 and knotted. This cord 22 serves as a means for limiting the expansion of the band. One of these cores is located at opposite ends of the structure so that, since the construction is the same at both ends, a description of one will suffice for both.

Threaded onto the threaded portion of the stud H is a cup shaped covering 24 having 2. diametrically extended passage 25 formed therethrough and into which may be inserted the ends of the eyelet i5. This covering 24 is provided with the enlarged bore 26 in which engages that portion of the coil 52 which is threaded onto the stud ll. The cover 2d prevents the expansion of the coils l2 which would be necessary in the event an attempt was made to unthread the coil 62 oil of the stud H. The coils l2 will frictionally engage the inner face of the bore 26 to such an extent that the frictional contact will have the effect of tending to unwind the coil which would, of course, render it larger and, therefore, the cover 2% prevents the unthreading of the coil l2 from the stud ll. Likewise, the coil l2 resists the unthreading of the cover 2!; to a certain extent so that undue threading of the cover 24 off of the stud I1 is thus resisted.

Experience has shown that a wrist band constructed in this manner and secured to the object as shown in Fig. 1, is one which is highly efiicient in use. Experience has also shown that when the band is expanded sufficiently to permit its being slipped over the hand the coils will not separate a distance sufiicient to allow entry of a hair between adjacent coils. The studs or cores at the opposite ends are connected by the non-resilient cord 22 and this connection is made so that the band may be expanded a sufficient distance to admit its being slipped over the hand and yet prevent the coils from separating to the extent that a hair could be engaged between the coils. This cord, of course, also serves to prevent undue stretching of the coil structure which would have a tendency to damage it.

In order to remove the cover 2 3, the operator would insert a pin between the coils and project it through the passage or slot 23 so as to hold the stud or core I! stationary while the cover 24 could then be rotated by a suitable rod projected through the passage 25. In this way the operator could transmit suflicient force to the cover 24 to unscrew it from the core or stud but the resistance would be sufiicient to prevent undue unthreading. When the cover 24 is removed the end of the coil structure is available and if necessary a portion of this may be cut off and the end again threaded onto the stud i! so that the band may be very easily and quickly adjusted to proper size.

In Fig. 5, Fig. 6, and Fig. 7, I have shown a slight modification in which a coil structure 52a, and 20a, is used. As shown in Fig. 6, I use a single piece of material which is provided with a main body 3| which is formed into a band to provide a tubular body into which the end of the coil structure [2a, and 26a, may be inserted. The lugs, 32, 33, and 34, may then be turned inwardly as clearly shown in Fig. 4, and Fig. 5, and the cord 22a may be projected through.

the opening 33 formed in the lug 3t and then tied. Projecting outwardly from the main body 3! is a tongue 37 which is doubled upon itself as clearly seen in Fig. 4 and which serves as a hook for engaging an eyelet l5 or a similar object. A front covering in the form of a disc 35 projects from one side of the body 3! and is turned downwardly so as to cover the front end of the coils I 211, and Eta. The coil structure iZa engages snugly within the band provided by the main body 3i, the ends of which may be soldered or otherwise secured together to provide an endless band. An attempt to unwind the band from the coil structure In would again be resisted by the expanding effect of an unwinding action on the coil structure. The modified structure has some of the advantages of the preferred structure and has the additional advantage of being cheaper to fabricate and of a more permanent nature when connected as shown in Fig. 4:.

By the use of the inner and outer coils I find that the band retains its shape. This structure also prevents bending, spreading apart or kinking. The inner coil 20a is under slight compression so as to relieve the wrist of the pressure of the outer coil.

What I claim is:

1. A wrist band of the class described comprising a wrist encircling outer coil; an inner coil positioned within said outer coil and spaced opposite end of said coil for limiting the stretchtherefrom and being of less length than said outer coil and under slight compression; a peripherally threaded stud threaded into each end of said outer coil; a neck projecting from the inner end of each of said studs and of less diameter than said stud, said inner coil embracing a neck at the opposite ends of said coil; a peripheral projection extending circumferentially of said neck intermediate its end, said coil embracing said neck and engaging behind the same, said neck having a passage formed therethrough; and a non-elastic cord connected with the passage in each of said necks for connecting said necks together.

2. A wrist band of the class described comprising a wrist encircling outer coil; an attachment member connected to the opposite ends of said coil; an inner coil positioned within said outer coil and spaced therefrom and under slight compression; means on said attachment means for engaging said inner coil; and a non-elastic cord connected to the attachment means and projected through said inner coil.

3. A wrist band of the class described, comprising: a wrist encircling outer coil; an inner coil positioned within said outer coil and spaced therefrom and being of less length than said outer coil and under slight compression; a cover member at each end of said outer coil and having a bore formed therein, the inner end of said bore being internally threaded and the outer end of said bore being counterbored to provide a larger diameter; a threaded stud threaded into a smaller portion of said bore and having a threaded portion extending into the counterbored portion, an end of said outer coil being threaded on the threaded portion of said stud in said counterbore, said counter-bore being of suflicient diameter to accommodate the end of said outer coil; a neck projecting from the end of said stud and having a projection intermediate its ends to provide a larger outside diameter, the end of said inner coil being positioned in embracing relation on said neck and a portion of the same lying behind said projection; and a non-elastic band extending through said inner coil and connected at its opposite ends to the stud at the ing of said coil.

THEODORE HIRSCH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS

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