US1810685A - Separable fastener - Google Patents

Description

June 16, 1931. G. SUNDBACK SEPARABLE FASTENER Filed Nov. 11, 1929 INVENTOR. G/a/ea/yfiundaak feonstruction of Figure 5.

Patented June 16, 1931 UNITED STATES PATENT OFFICE I GIDEON SUNDBACK, -01? MEADVILLE, PENNSYLVANIA, ASSIGNOR TO. HOOKLZESS FAS- TENER COMPANY, OF MEADVILLE PENNSYLVANIA, A CORPORATION OF PENNSYL- .VANIA SEPARABLE FASTENER Original application filed September 22, 1926, Serial No. 137,018, and in Great Britain .September22i1927.

niviaea and this application filed November 11, 1929. Serial no". 406.2811.

This invention relates to separable fastener stringers particularly of the type adapted forsliderless operation and the'present appli cation is a division ofm'y co-pending ap- 5 p'lication Ser. No. 137,018 filed September 22,

1926, Patent No. 1,746,565, granted February 11,,1930Q An object of the present invention is to provide an improved construction of the interlocking members for a type of'multiple fastener adapted for sliderless operation.

Another object is toprovide an improved construction of the interlocking members in a f fastener of this type wherein a member on one stringer is arranged directly opposite a member on the other stringer to form an interlockingpair.

A more specific object ofmy invention is 'toprovide an improved construction of the interlocking members so that they may be manufactured very easily from sheet .metaL Other objects and advantages of my invention'will-appear more fully during the course of the following specification.

bodiments which my'invention may assume inpractice. In these drawings; a

Figure 1 is a plan view of the fastenerof' my invention being closed by the thumb and finger of an operator. Fig. 2 is-a ti ansverse sectional View of the fastenerstringers.

Fig. 3 is a section extending longitudinally of the stringers through a pair of locking members in interlocked relation.

, rFig. 4is a similarview of the members as they aregipproaching interlocked relation.

Figure 5 is a perspective view illustrating the faces of the interlocking members and showing a slightly modified stringer construction. Figure 6 is a transverse section similar to ;;;-Figu're 2 but showing the modified stringer The separable fastener illustrated comprises a pair of flexible strin' ers 6 and 7 adapted to be attached to thee ges of a gap to be closed. A fastener of this type is partongues 18 w ticularlyadapte'd for handbags, pouches and p In the accompanying drawings, I have similar articles where there are two flexible erably made from a fiat piece of metal cut.

to proper length and bent inwardly at opposite ends as indicated at 12 and 13 to provide clamping means for connecting the looking member to its flexible stringers. In Fig-. ure 2 the edges of the material and. 11 are folded over as shown at 14 and 15 to extend under the inwardly bent portions 12 to provide a secure connection between the outer ends of the locking members and the material of the stringers. J At the other end of the locking members, there are provided a pair of strips 16 and 17 which are attached at 'one edge to the material 10 and 11- res ctively and which have their other ed es oubled over and turned under the en s 13 of the locking members. The body portions of the locking members, arranged between the bent ends are preferably bent inwardly so as to --lie closely against and parallel with the body portion of the opposite member.

up at an acute angle from each of the locking members and arecess 19 is formed in An interlocking tongue 18 is cut out and bent I each member adjacent such projection to proy vide means for receiving the projection on an opposite locking member. As best shown in Figure 3, ,the locking tongues are flattened out at their ends asindicated at'20 by a suit- 19 may be made somewhat shorter than the locking'tongues- The ed es of each ofthe 1 recesses provide suitable s oulders 21 for interlocking engagement with the ends of the ereby the fastener is securely hel together.

cated in Figure 4.

which may .coending application In the modification shown in Figures 5 and 6 the sides 22 and 23 of a pocketbook, handbag or similar article, have their edges turned over at 24 and 25 respectively to form connections with the inner ends of the locking members. A pair of strips of material 26 and 27 are attached to the sides 22 and 23, respectively. These strips cover the locking members ofthe fastener and-have their ends 28 and 29 doubled over to connect with the outer ends of the locking members.

In both forms of stringers, it will be noted that grooves 30 are provided between the .bent ends of the lockingmembers to accomof the stringer in advance of his thumb and finger,vare well apart so that'the locking members come together at an angle as indi-- Each of the interlocking tongues 18 passes through an a rture 19 on the opposite member and locks ehind one 'of the shoulders 21. One after'a-nother of the pairs of locking membersare thus interlocked progressively and when the thumb and finger reach the end of the stringer, the

. fastener is completely closed. Thereafter a pull on the edges of the material to which 7 the fastener is attached will not open the fastener but intended opening maybe very easily accomplished by simply beginning .at one end and tearing the fastener open.

As a result of my invention, it will be apparent that a novel construction of interlocking element has been provided especially adapted for that type of fastener where the locking members are secured to the inner faces of overlapping flexible stringers, leavin no metal exposed when the fastener is closed. It will be readily seen that the looking member of my invention can be very easily and cheaply manufactured out of sheet meta The feature of a smoot outer surface for slider operated fasteners is being claimed more broadly in my co-pending application Serial No. 406,279, filed as a continuation in part of the above mentioned application Serial No. 137,018, now Patent No. 1,7 46,565.

While I have in this application specifically shown and described one preferred embodiment and. a modification thereof which my invention may assume in-practice, it is to be distinctly understood that this embodiment and modification are .merely for the purposes of illustration and that various therewith an interlocking pair,

devised within the scope other forms may be defined the following of my invention as claims.

,What I claim as my invention is 1. A separable fastener comprising a pair of overlapping flexible locking members arranged on the inner face of each of saidoverlapping stringers, said locking members being made from substantially flat strips of metal the body portions of which are substantially parallel to said inner faces, an interlocking projection on each of said members of one series extending out from the face of the stringer at an acute, angle, and means on the other series of mem-- bers to receive and interlock with said projections.

2. A separable fastener comprising a pair of overlapping flexible stringers having looking members arranged on their adjacent overlapping faces each of said members comprising a substantially flat strip ofmetal having a body portion parallel with said stringer and bent to provide'means for connection to said stringer, and an interlocking projection comprising a tongue stamped out of thebody portion of said str'p. of metal and fitted into a recess cut out 0 th body portion on the opposite adjacent, locking member.

3. A separable fastener comprising a pairof overlapping flexibleistringers having look ing members arranged on their adjacent over-- lapping faces each member on one stringer stringers, a series 0 being arranged directly opposite a like memher on the opposite stringer and constituting an interlocking tongue on each ing at an acute angle therefrom and longitudinally of said stringers, and means on each of said members to receive and interlock with the tongue on the opposite member.

' 4. In a separable fastener, a pair of members of flexible material, cooperating fastener elements attached to the adjacent edges of said members, and a separate flexible covering strip attached-to each of said members adjacent said fastener elements, said covering strip extending over and at all times lying closely against said fastener elements. 5. In a separable fastener, a pair of members of flexible material, cooperating metal fastener elements attached to and projecting from the longitudinal edges of said members, and a thin covering strip of flexible material attached to each of said members adjacent 'saidfastener elements, said covering strip of said members project-

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