US1470267A - Snap fastener - Google Patents

Description

Gd. 9, E923. 1,47%26'7 M. F. KiESSLlNG SNAP FAS TENER Filed April 25, 1922 INVENTOR.

Max F fiaessi'azy A TTORNEY Patented @ct. Q, i923.

lilhlll hll MAX KIESSLING, OF VTATERBURY, CONNECTICUT, ASSIG-NOR TO AIl'EERICAN FAS- TENER COPUIPANY, OF VVATERBURY, CONNECTICUT, A CORPORATION OF CONNECTI- CUT.

SNAP FASTENEE.

Application filed April 25,

To all whom it may concern:

Be it known that 1, Mai; l Kmssnmo, a citizen of the United States, and a resident of Waterbury, county of New Haven, and

State of Connecticut, have invented certain new and useful Improvements in Snap Fasteners, of which the following is a specification.

This invention relates to separable fas tenors and more particularly to an improved form of socket member for use in a snapfastener of the stud and socket type.

One object of the invention is to provide an improved form. of socket member for such a snap-fastener in which it will be n'actically impossible for the washer and base-member to work loose or come apart under ordinary service conditions.

A further object is to provide a snaptfastener of the above nature which will be simple, cheap to manufacture, and very efieicnt and durable in use.

W'ith these and other objects in view, there has been illustrated on the accompanyinp; drawings one form in which the invention may be conveniently embodied in practice. a v i F 1 represents a transverse sectional view of the snap-fastener, showing the appearance of thesocket member and washer before the dome of the shank has been headed over into the annular seat of the washer.

Fig. 2 is a similar transverse view of the snap-fastener showing its appearance after the dome has been headed over into the annular seat of the washer, and also showing the cooperating stud member in position, detachably secured to said socket member.

Fig. 3 is a top plan view of the base of the socket member detached from its washer, as it appears before the heading operation. 4

Fig. 4; is a side sectional view of: the top portion of the shank of the socket member as it appears when the head is being formed bvmeans of a die and punch.

ln the previous forms of stud and socket fastenersin which a washer was employed member, said fabric was sometimes secured to the base by an open eyelet shank which was flanged over upou'the washer. In other cases, the fabric was held in position by the to hold the fabric to the base of the socket 1922. Serial No. 558,509.

means of a smoothcylindrical. shank, closed at the top, which was headed over upon the washer. Both of these old forms of fastoner, however, have proven unsatisfactory in practice.

in the first mentioned form having the shank open at the top, it was found that while the fabric was being washed, moisture would collect in the tubular shank of the fastener, a small. amount of which would remain in the fastener after the fabric was dried causing the socket to rust or oxidize. Prior-cover, dirt often became lodged in the pen shank, andas a consequence, the snapiastener became unsightly as well as unsani- "was found that during the process of heading over the top of the shank, the metal had a .tendeney to crack, split, or buckle over unevenly. This causedau unsatisfactory joint between the top of the shank and the washer, causing the washer to work loose or br ak entirely awav from the base.

Hence with such a fastener, it was impossible for the manufacturer to sell the fastener i 1th a guarantee that the washer woulc stay on the base.

The present invention is designed to overcome the above and other disadvantages.

This has been accomplished by the use of a socket member having a tubular shank with a closed top or dome, and provided with a grooved neck POlillOD, imn'iediately below dome. It has been discovered that v] v 7 3 noon toe dome of such a shank 1S headed over into the washer, the metal will not crack, split, or buckle, as is generally the case with a straight shank, but will be spread apart uniformly to form a smooth circular head. The joint thus formed be: tween the washer and the head of the shank has been found to be extremely strong and a central tubular shank 11 rising upwardly and formed integral with the base 10. The base 10 is provided on its outer circumference with an upwardly and inwardly rolled flange 12 enclosing a spring device formed oi a single piece of spring wire. The wire spring device consistsof a s'emi circular body portion 13, a pair of reversely: bent portions i l, 141-, and a pair of parallel tree arm sections 15, 15.

he tree arm sections 15, 15, of the spring device are adapted to lie within a pair of oppositely alined slots 16, 16, formed at the base of the shank. As will be evident, the free arms 15, 15,, are adapted to resiliently press upon the stud member of the snap-fastener below the dome 27, whereby the socket and stud members will be (let-reliably locked together.

The upper end of the shank 11 is closed and is formed into the shape of a sphere or a dome 17, below which is a necked portion 18 for, a purpose to be hereinafter more fully described. Surrounding the shank 11 imniediately adjacent the neck portion 18 is a circular washer 19 having an annular central depressed seat 20, into which the dome 17 is adapted to be flattened down during the heading operation, as clearly shown in Fig.

2. The washer 19 is provided with a downwardly tapered rim or cupped section 21 having its edge bent inwardly and adapted to engage an upper fabric 22 and hold said fabric rigidly in position .upon. the base 10.

The stud member of the snap-fastener, which cooperates with the socket member,

comprises a base plate 23 and a topplate 24.,

between which plates the fabric'25 is adapted to. be engaged. Extending upwardly from the top plate 24; is a shank 26having an enlarged dome 27 at the top. As will be evident from Fig. 2, the shank 26 is adapted to be releasably engaged by the parallel free arms 15, 15 of the spring device extending through the slots 16, 16.

lVhile this invention is especially adapted for use in connection with the manufacture of fabric fastener tapes, having rows or cooperating fastener members secured there to, the. improved fasteners may also be se-' cured directly to the edges of the goods to be detachably joined.

In operation, when it is desired to attach a snap-fastener to a fabric, a hole maybe pierced in. the fabric at the point where the fastener is to be applied. The tubular shank 11 of the socket member is then inserted through the hole in the fabric, and the *asher 19 is slipped down around the shank until it engages the top of the fabric. The next operation is to flatten the dome 17 down uponthe annular seat 20 ot the washer 19 until it presents a fiat head flush with the top surface of said washer. This heading process is preferably accomplished in a press by means of a punch. 28 and die 29 in the manner illustraced in Fig. l, but the heading may also be efliciently done simply by the use of a pair of pliers, the cooperating jaws of which are provided with die and punch members respectively. One advantage of this invention is the simplicity and ease with whichth-e heading ma be accomplished, no special form of heading machinery being required.

It will be understood that while this invention is especially adapted for dress fas teners, it may also be used to connect the edges 'of gloves, automobile curtains, upholstery, slip-covers, etc.

While there has been disclosed in this specification, one form in which the invention maybe embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is .not to be limited to the specific disclosure, but may be modified and embodied in various other forms without departing from its spirit. In short the invention includes all the modifications and embodiments coming within the scope oi the following claims.

Having thus fully described the invention, what is claimed as new, and for which it is desired to secure Letters Patent, is:

1. In a sna 'i-i'as'tener, a stud member, a socket member for detachably receiving the end ofsa'id stud member, said socket member comprising a base, a shank, and a washer, said shank being closed at the top and provided with a reduced neck portion intermediate its length, the top of said shank bei'ngv adapted to be headed over upon said washer, the diameter of the closed top and the bottom ofsaid shank being substantially the samegin their original condition, before the top of the shank has been headed over upon the stud member.

2.,In a stud and socket fastener, a stud member,fa socket member cooperating therewith,,and comprising a base plate, a shank extending upwardly fromsaid base plate, spring device on said base plate extending through the wall of-said shank for engagin said stud member to detachably hold said stud and socket members together, said shank having its upper end closed to form a'dome, and havinga reduced neck portion,

a washer upon which said dome is adapted to be headed over, the diameters ol the dome and bottom portion ot the shank being'substantially-the same in their original condi- 3. In a snap-fastener, a. stud member, a socket member for detachably receivingthe endof said stud member, said socket member, comprising a base plate andra washer, said base plate having an upstanding tubular lnemberintegral therewith, said tubular member being closed-at the top and being reduced in diameter adjacent its top to form an annular groove, the top of said tubular member being adapted to be headed over upon said washer to detachably lock the washer to the base plate.

42. In a snap-fastener, a stud member, a socket member for detachably receiving said stud mel'nber, said socket member comprising a base having a central upstanding tubular shank, said shank being closed at the top, and provided with an annular groove, a washer, the portion of said shank above said groove being adapted to be flattened down upon said washer.

T. In a snap-fastener, a stud member, a socket member for detachably receiving said stud member, said socket member comprising a base having a central upstanding tubular shank, said shank being closed at the top, and provided with an annular groove, a

washer, said washer having an annular depression at the center, the top of said shank being adapted to be flattened down above said groove into the depression of said washer.

6. In a socket member for a stud and socket fastener, a base, a shank secured to said base, a washer mounted on said shank and adapted to engage a fabric located between said washer and base, said shank having sub stantially the same diameter throughout its length except for an intermediate reduced neck portion and a closed dome above said neck portion, said dome adapted to be flattened down above said neck portion to form a head upon said washer.

In testimony whereof, I have ailixed my signature to this specification.

MAX F. KIESSLING.

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