US1902557A - Snap fastener socket - Google Patents

Description

March 21, 1933. v V D'YJANES I r 1,902,557

SNAP FASTENER SOCKET Filed June 20', 1932 INVENTOR Patented Mar. 21 1933 UNITED STATES PATENT OFFICE EDMUND D. JANES, 0F WATERBURY, CONNECTICUT, ASSIGNOR 'I O SCOVILL MANU- FACTURING COMPANY, OF WATERBURY, CONNECTICUT, A CORPORATION OF GON- NEGTIOUT SNAP FASTENER SOCKET Application filed June 20,

This invention relates to an improved snapfastener socket of very simple construction, and, although adapted for general application, it is particularly suited for use as a slide which maybe adjustably secured to one end of a strap.

One object of the invention is to provide a two-piece snap fastener socket, the studengaging element of which consists of a simple piece of sheet-metal placed within a perforation in a sheet-metal body portion and having portions turned outwardly in opposite directions into an overlapping relationship with respect to parts of the opposite surfaces of the body portion immediately surrounding the perforation, the clearance between the stud-engaging ring and the body portion being limited to an amount such as will no more than allow for the necessary expansion of the ring to permit it to be snapped over the stud, thereby preventing the ring from being overstrained by abnormal expansion.

Another object of the invention is to provide a simple two-part snap fastener socket having a resilient element to engage with a complementary stud and slotted portions by means of which the socket may be adjustably secured at any desired position along a strap.

In the accompanying drawing illustrating the invention in its preferred form;

Figure 1 is a plan view of a socket embodying the invention in a form adapted for attachment to a strap.

Fig. 2 is a longitudinal sectional View of the socket illustrated in Fig. 1, the socket being indicated as having been secured to a strap and snapped over a complementary stud element.

Fig. 3 is a plan view of the body portion of the socket ready to receive the resilient stud-engaging element.

Fig. 4 is a plan view of one form of a partly-completed stud-engaging element adapted to be mounted in the body element of Fig. 3 to produce a socket like that illustrated in Fig. 1.

Fig. 5 is a cross-sectional view of the partly-completed stud-engaging shown in Fig. 4.

element 1'5"; Serial No. 618,196.

Fig. 6 is a cross-sectional view through the resilient stud-engagingring of the socket and adjacent part of the body portion, a pomplementary stud being outlined in broken mes.

The preferred form of the invention herein illustrated comprises a sheet-metal body portion 20, having a perforation 21 therein within which is mounted a resilient studengaging ring 22. One manner of making and assembling the ring 22 with the body portion 20, as herein disclosed, consists in producing a flanged split ring 23 (Figs. 4 and 5) comprising a cylindrical element 2 of slightly smaller diameter than the perforation 21 in the body element and an out-' wardly-extending flange 25. This element may be slipped into the perforation 21 from one side of the body portion 20, after which a part of the cylindrical element 24 may be turned outwardly to produce a second flange 26, leaving a portion 27 of the cylindrical element to pass through the perforation 21 and unite the two flanges.

In designing the parts of the socket it is important that the dimensions of the perforation 21 and the resilient stud-engaging ring 22 be so proportioned that the clearance between the portion 27 (Fig. 6) of the ring and the opposed parts of the body portion 20 immediately surrounding the same shall be only sufficient to allow for the necessary expansion of the ring when it is snappedover a complementary stud 28. By thus limiting the size of the perforation with respect to the part of the ring which passes through the perforation, any undue straining of the ring by abnormal expansion is prevented and a firm engagement with the stud assured.

If desired, the body portion of the socket may be of the form of a buckle and may have slots 29 through which a strap 30 (Fig. 2) may be passed, thus affording means whereby the socket may be adjustably secured at any point along the strap. Spurs 31 may also be provided along an edge or edges of one or more of the slots to engage the material 'of the strap and more securely hold the socket in any desired position of adjustment. When made in the form herein illustrated it will be observed that the entire socket slide consists of but two parts,

one part adapted to be secured to a strap and the other part adapted to yieldingly engage and hold the stud of a complementary fastener element.

The marked simplicity of the above-described fastening element tends to materially reduce the cost of construction without sacrificing such important factors as eificiency, durability or appearance.

The invention is not intended to be limited to the specific form herein selectedfor purposes of illustration but should be regarded as including modifications and variations thereof within the scope of the appended claims.

What is claimed is 1-- 1. A detachable snap fastener comp-risin a stud element having an attaching hea and a two-part socket element consisting of a perforated sheet-metal body portion and a restricted, resilient, expansible stud-engaging portion in the form of a split ring having a neck portion extending through the perforation in the body portion and outwardly-turned portions overlapping parts of the opposite surfaces of the body portion immediately surrounding the perforation, the diameter of the perforation in the body portion being equal to the diameter of the head of the stud plus twice the thickness of the material of the neck portion of the split ring plus a minimum necessary working tolerance.

2. A detachable snap fastener comprising a stud element having an attaching head and a two-part snap fastener socket and slide consisting of a perforated sheet-metal body portion and a restricted, resilient, expansible stud-engaging portion in the form of a split ring having a neck portion extending through the perforation of the body portion and outwardly-turned portions overlapping parts of the opposite surfaces of the body portion immediatelysurrounding the perforation, the diameter of the perforation in the body portion being equal to the diameter of the head of the stud plus twice the thickness of the material of the neck portion of the split ring plus a minimum necessary working tolerance, the body portion having slots whereby it may be adustably secured to a strap.

In witness whereof, I have hereunto signed my name.

EDMUN D D. JANES.

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