US2193761A - Slider for separable fasteners - Google Patents

Description

March 12, 1940. D, B, GMQRE 2,193,761

SLIDER FOR SEPARABLE FASTENERS Filed July 2, 1937 INVENTOR. DeLberf .B. Gilmore ORNEYS.

Patented Mar. 12, 1940 SLIDER FOR SEPARABLE FASTENERS Delbert B. Gilmore, Erie, Pa., assignor to Talon, Inc., a corporation of Pennsylvania Application July 2, 1937, Serial No. 151,615

7 Claims.

My invention relates to sliders for separable fasteners and to methods of making the same.

.It is desirable to form such sliders from sheet material because material in that form is cheapest and the operations can be carried on in mass production very easily. A plain sheet metal blank with a narrow bend must be reinforced in some manner and extraneous means, such as a rivet, have usually been provided in such sheet 10 metal sliders, see for example, Sundback 1,566,-

According to my invention, I dispense with the necessity of extraneous means and provide an improved reinforcing connection between the wings which is an integral part of the sheet metal blank and which requires in this form, merely simple shearing and bending operations. I am aware that integral rivet portions have been suggested heretofore but reinforcing elements in my 20 improved slider are formed in a different manner. It is a simple construction having the desired qualities of neatness, strength and durability.

In the accompanying drawing, I have illus- 25 trated one embodiment of my invention and some modifications thereof which my invention may assume in practice. In this drawing:

Fig. 1 is a plan view of a completely formed slider blank;

Fig. 2 is a plan view of a completely bent slider;

Fig. 3 is a cross-sectional view taken on line 33 of Fig. 2;

Fig. 4 is a cross-sectional view taken on line 5-8 of Fig. 2;

i Fig. 5 is a cross-sectional view similar to Fig. 3

showing a modified form of bending the slider;

Fig. '6 is a plan View of a modified form of completely formed slider blank;

Fig. '7 is a plan view of a completely bent slider 44; of the modified slider blank;

Fig. 8 is a cross-sectional view taken on line 8-4; of Fig. 7; and

Fig. 9 is an end view of the completely bent slider shown in Fig. '7.

The slider illustrated is for use on conventional slide fasteners now in general use, and commonly called "zippers. Such fasteners have opposed series of interlocking fastener elements arranged in spaced relation'along adjacent edges of a pair 50 "of tape stringers and are moved into and .out

of cooperating relation by mwns of the slider.

The blank shown in Fig. 1 consists @f two wings ill, ll connected by a pair of narrow portions I2 which are to form the neck, and a narrow strip l3 which is to form the reinforcing connection. The narrow'strip I3 is formed from the medial longitudinal portion of the blank and extends from an intermediate point in one blank between the neck portions I! to an intermediate point in the other blank. The wings have 6 side flanges it along their opposite edges for guiding the fastener members. The connectin portion 13 has its opposite parallel edges notched as at I6; I'I which are adapted to receive the edges of the wings and neck upon bending the slider to shape.

Having prepared the blank in this manner it is now ready for bending and is bent on a line half way between the ends of the blank so that there is produced a slider having spaced apart 15 wings l0 and H integrally connected by U-bent portions, as shown in Figs. 2, 3 and 4. The narrow strip I3 is then bent upwardly and inwardly between the wings until it is substantially perpendicular to the plane of the wings with part of the material extending above the top wing to provide the pull attaching loop 68, leaving the two narrow loop portions l9 which together comprise the neck. The narrow loop portions IQ of the neck are then bent together into the notches l6, ll of the connecting portions to complete the bending of the slider. The notches l6 and ii form the shoulders it which extend over the surface of the top wing to keep the wings from spreading apart under stress.

'I'he slider is now ready for use and consists of two wings it and H, spaced apart to provide a channel to receive fastener members with the connecting portion i3 acting as a combined spreading portion for separating the fastener members and a reinforcing connection spaced at a point from the folded neck to reinforce the slider against all normal bending stresses.

The material of the neck may be, if desired, indented inwardly as at 20 in Fig. 5, against 40 the back side of the connecting portion l3 to help hold the connecting portion in position and maintain the wings in spaced relation. This tends to further reinforce the slider and, of course, increase its strength.

In addition, in the blank shown in Fig. 6, I provide laterally extending tabs 2i on each side of the neck midway between the wings. Upon bending the slider blank these tabs are bent inwardly toward each other between,the wings and into the notches ll around the connecting portion l3, as shown in Figs. 7, 8 and 9. These tabs keep the wings spaced apart and act as spreading and guiding portions for the fastener elements in their travel through the slider.

While I have shown and described in this application, one embodiment and several modifications thereof which my invention may assume in practice, it will be understood that this embodiment and the modifications are merely for the purposes of illustration and description, and that various other forms may be devised within the scope of my invention as set forth in the appended claims,

What I claim as my invention is:

1. A slider for slide fasteners consisting of a single piece of sheet material having spaced apart parallel wings, a U-s'haped neck integrally uniting said wings at one end, a reinforcing connection for said wings at the spaced apart portions thereof spaced from said neck and integral with both of said wings.

2. A slider for slide fasteners of the class described, consisting wholly of a single piece of sheet material having spaced apart parallel wings connected by a U-shaped portion at one end, a connection between said wings in the medial portion thereof spaced from the U-shaped portion and integrally joined at opposite ends with the wings.

3. A slider for slide fasteners of the class described, consisting wholly of a single piece of sheet material having spaced parallel wings connected by a U-shaped neck at one end, a connection between the wings comprising a portion disposed substantially perpendicular to said parallel wings and integrally joined at its opposite ends with both said wings a considerable distance away from the neck.

4. A slider for slide fasteners of the class described, consisting wholly of a single piece of sheet material having spaced parallel wings connected by a neck at one end, a connection between the wings comprising a portion substantially perpendicular to said parallel wings and integrally joined at its opposite ends with both said wings a considerable distance away from the neck, said connection extending outwardly of and forwardly over one of the wings to form a loop adapted to support a slider pull.

5. A slider for slide fasteners of the class described, consisting wholly of a single piece of sheet metal joined together at one end by a U- shaped neck, an integral reinforcing connection joined at opposite ends with both said wings, the material forming the connection extending upwardly above the top wing and forwardly to provide a loop, said connecting piece having shoulders bearing on the top surface of the upper wing to resist spreading forces.

6. A slider having the features defined in the preceding claim in which intermediate portions of the U-shaped neck extend inwardly toward the longitudinal medial line of the slider substantially in contact with each other.

7. A slider as defined in claim 5 in which intermediate portions of the U-shaped neck extend inwardly toward the longitudinal medial line of the slider substantially in contact with each other, and tabs extending from said neck and converging inwardly to said reinforcing connection. DELBERT B. GILMORE.

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