US1538350A - Snap fastener - Google Patents

Description

S. C. PEARSON SNAP FASTENER Filed May 24, 1924 INVENTOR 625 a 4? a'r'aar'r A'QORNEY Patented May 19, 1925.

UNITED STATES SUSAN CLARE PEARSON, or NEW YORK, N. Y.

SNAP FASTENER.

Application filed May 24,

To all whom it may concern.

Be it known thatI, SUSAN CLARE PEAR- soN, a citizen of the United States, residing in lVIanhattan, in the city, county, and State of New York, have invented a new and useful Improvement in Snap Fasteners, of which the following is a specification.

My invention relates to snap fasteners of the press button type used principally on ladies garments and has for its object the production of a device which will be durable and of economical construction, one which will be easily opened when it is desirable to open it.

In the construction of all the snap fasteners of which I am' aware, two parts are used, a stud button and an engaging member formed out of metal in shape to receive the stud and to hold a spring which has sub stantially parallel sides for engaging the stud button. This spring may be of varying shapes but so far as I am aware they all engage two sides of the button which feature. causes inefficient engaging means if any pull is exerted in a direction perpendicular to the line of contact of these two points and the snap fastener easily opens, while if the pull is exerted in any other direction the fastener remains in engagement. To overcome this, many improvements have been made in the shape of the stud button and the engaging member so thatthe fastener will not pull open, with the result that itJis quite diflicult to open the two engaging parts without putting ones finger nail in between the parts to pry them open. My improvement overcomes both these disadvantages comm-on to the fasteners now on the market.

Referring to the accompanying one sheet of drawings, in which similar characters of reference indicate like parts throughout the several views, y

Figure 1 is a top view of my fastener.

Figure 2 isa section on lines 22, Fig ure 1.

Figures 3, 4 and 5 are top views of modiiications which I may employ.

In the carrying out of my invention I pr-oride a stud button 1, provided with a base 2 and holes 8 by means of which the stud button may be attached to a garment. These 1924. Serial 1T0. 715,581.

buttons are usually pressed out of metal and are common to fasteners of this type.

The engaging member is made of a spring wire bent into a geometric form consisting of a corresponding number of spring arcs 5 and loops 6, the bow of the spring arcs curving in towards the center of the geometric figure. The ends of the wire may be joined as at 7 by any well known means or may be twisted as shown in Figures 3 and a. It will beobserved that in Figure 1 the spring arcs 5 contact on four sides of the stud while in Figure 5 the spring arcs 5 contact on three sides. IVhen a particularly strong fastener is desired a small bend 8 in each of the spring arcs is made so that the contact points are more nearly in one plane where they "engage with the stud, for it must be observed that in tracing the geometric form the wire in crossing goes over and then under with regularity throughout.

In the manufacture of the device it may be found desirable to give a twist to the loops 6 as at 9 and to do away with one loop and have the ends twisted as illustrated in Figure 4-.

The loops 6 form a convenient means for securing the engaging member to a garmentbut the main object of these loops which are of a size extending well over the base 2 of the stud button 1 is to provide a finger lift to open the fastener without the necessity of using the finger nail causing discomfiture and breaking of the nail in many cases.

I wish it distinctly understood that my snap fastener herein described and illustrated is in the form in which I desire to construct it and that changes or variations may be made as may be convenient or desirable without departing from the salientfeatures of my invention and I therefore-intend the following claims to cover such modifications as naturally fall within the lines of invention.

I claim:

1. A snap fastener comprising a stud but arcs to contact with the stud button so that crosses under and then over in regularity the points of contact will fall in a single throughout. 10

plane. In testimony whereof I affix my signature 2. The device of claim 1 with the addition in the presence of tWo Witnesses.

5 that the loops extend outside the base of the SUSAN CLARE PEARSON.

stud button. Witnesses:

3. The device of claim 1 with the addition EDW. VAN VINKLE,

that the Wire in forming the spring arcs EVELYN J. TYFE.

Images