US2065250A - Slider - Google Patents

Description

Dec, 22, 1936. l G. suNDBAcK u SLIDER Filed .my 22, 193s mi/ENTOR. Gideon SundbaU-Ii BY @@W. A RNEYS.

Patented Dec. 22, 1936 PATENT OFFICE SLIDER Gideon Snndback, Meadville, Pa., assignor to Hookless Fastener Company, Meadville, Pa., a y corporation of Pennsylvania Application July 22, 1933, Serial No. 681,721

2 Claims.

My invention relates to separable interlocking fasteners and particularly to sliders for such fasteners.

The invention is intended` primarily for nonif, metallic fasteners although it can be used to advantage with certain metallic fasteners. g

An object of the invention is to provide a wear resisting surface on the parts of a slider which are most subject to wear. In 4sliders made from metal, there is not much difficulty encountered on account of the wear of the slider, except in long lengths of fastener chain such as applied to tents, rugs, etc. However, recent experiments with slide fasteners made from cellulosic nitrate 1g material have demonstrated that objectionable wear is likely to occur on the slider in ordinary use.

According to my invention there are attached on the inner surfaces of the slider flanges which 5g@ are most subject to wear, small pieces of wear resisting material. In one desirable embodiment, metal plates are anchored i'n place on the slider flanges but it is believed that certain nonmetallic materials will be found useful for the purpose. A pressed fiber material attached to the slider flanges would wear better than the cellulosic nitrate material of the slider body. It may in some cases be desirable to make the body portion of the slider of relatively soft plastic n material such as cellulose nitrate and the anges or portions of them of relatively hard plastic material, such as bakelite. It is also believed that certain impregnated fabric materials would be useful for the purpose.

35 tion can be stuck in 4place on the flanges by the use of solvent to soften4 the cellulose nitrate material sumciently to cause it to adhere to the fabric. In the accompanying drawing I have shown 40 for purposes of illustration several embodiments of my invention. -In the drawing:

Fig. 1 is a general view of a slide fastener constructed in accordance with my invention.

Fig. 2 is a cross-section on line 2-2 of Fig. 1;

5 Fig. 3 is a perspective view of one-half of a slider; I

Fig. 4 illustrates a second embodiment; and

Figs. 5 and 6 illustrate still other embodiments, Fig. 6 showing" a wear resisting insertl of fibrous 50 material.

The fastener shown in Fig. 1 is a common form having flemble supports, herein fabric tapes 1, with interlocking elements 8 attached theretoin luniformly spaced relation. The particular shape of the intkrlocking elements forms no Any thin fabric sec- 4 part of the present invention and the ones illustrated are provided with projections S which engage in recesses on the opposed interlocking members in a manner which is well-known in the art. For the purpose of interlocking and re- 5 leasing the elements there is provided a slider I0 having a pull member Il attached thereto for actuating the same.

'I'he slider comprises a body of generally keystone-shape having a Y-shaped channel I2 there- 10 in. The slider body has opposed parallel wings I3 connected at one end by a triangular shaped neck I4 and having side anges I5. The flanges bear against the ends of the interlocking elements and it is at this point that most of the wear occurs in the'slider. This is due to pulling thef fastener together under more or less lateral strain. The greatest wear occurs within the narrow end of the slider where the interlocking elements are brought into intermeshed relation.

{I'he `wear resisting plates lI6 are attached to the inner surfaces of the slider flanges in such positions that. they will be concealed from view and preferably, though not necessarily extend the full length thereof. In the case of non--me- 25 tallic Wear resisting materials or even with metallic materials, provided the surfaces are roughened, the wear plates may be stuck in place by cement, glue or similar bonding material or if the slider body is of soluble material, the wear pieces may be stuck'in place by softening the material with solvent suiilci'ently to cause the wear pieces to adhere firmly to them. e,

In Fig. 4 the entire slider flange VI`l ,is formed of the wear resisting material and can be attached to the fiat slider wings by any suitable means. InFig. 5 there is shown a convenient wayofattaching a wear plate, particularly when the plate is made of metal.l The lugs I8 are turned outwardly at the ends of the wear pieces 40.

While I havexshown and described in this application one specic form and' several other embodiments which my invention may assume in practice. it will be understood that these embodiments are merely for thepurposes of illustration I;

and description and that various other forms may be devised within the scope of my invention as described in the appended claims.

What I claim as -my invention is:

1. Aeslider for separable interlocking' trastien-4 ers of the class described, comprising a bodv of generally keystone-shape having l`e. Y-shaped channel therein, the body having opposed wings and a neck connection at one end o! the wings.

said wings having side ang'es extending towardv each other which anges bear against the ends of the fastener elements in closing vthe fastener, the slider body consisting of a relatively low wear resistant non-metallic material to match the material of non-metallic fastener elements, and substantially concealed metal plates anchored in place on the slider anges so as to provide rela.-

fastener elements in closing the fastener, the i0 slider body consisting of a relatively low wear resistant non-metallic material; and wear resistant pieces anchored lnplace on the slider iianges in such positions as vto be concealed from view so as to provide relatively high wear resistant sur- 15 faces on said iianges v t GIDEON SUNDBACK.

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