US2174002A - Slide for separable fasteners - Google Patents

Description

p 1939- Q A. LE V. HYDE 2,174,002

SLIDE FOR SEPARABLE FASTENERS Filed Aug. 30, 1958 INVENTOR.

ATTORNEY.

. Hookless fasteners,

Patented Sept. 26, 1939 PATENT OFFICE 2,174,002 SLIDE FOR SEPARABLE FASTENERS Arthur Le Verne Hyde,

Blackwood, N. J., assignor to Rainbow Plastics Corporation,

Grenloch,

N. J., a corporation of New Jersey Application August 30, 1938, Serial No. 227,451 1 Claim. (Cl. 24-295) The present invention relates to separable fasteners and more particularly to slides for interlocking and disengaging two rows of. hookless fastener elements.

particularly when used on garments, are apt to spontaneously open, the

slide being moved downwardly to separate the fastener elements under tension of body movements, frequently causing embarrassment or discomfort.

In metallic slides. due to the characteristic tensile strength of the metal, it has been possible to provide various means for preventing inadvertent separation of the fastener elements,

which means are not suitable for the relatively brittle thermoplastic materials, with which this invention primarily concerns itself.

The present invention, therefore, contemplates the provision of normal means for anchoring :1 or looking the slide on the fastener element rows against spontaneous, inadvertent separatlon which means are adaptable for incorporation in thermoplastic slides as well as metallic slides.

35 This invention contemplates the provisionv of slides having means for engaging the non-locking end elements usually provided on rows of fastener elements whereby the slide is prevented from spontaneously sliding down the element so rows to separate the same.

This invention further contemplates the provision of slides of the character described which are highly economical to produce being capable of casting or molding complete with its fastener locking means in one single operation.

The construction and advantages of the hookless fastener slides of the present invention-will be made clear by the embodiment thereof which is illustrated in the accompanying drawing in 40 which- Fig. 1 is afront view of a slide of the present invention partly broken away, to show the fastener element engaging means.

Fig. 2 is an edge view 01' the same.

45 Fig. 3 is a view of the slide arranged on two rows of fastener elements in partly openposition.

Fig. 4 is a similar view with the fastener elements completely interlocked and the slide arranged against slipping.

50 The slide III, which is illustrated, is of the usual type, consisting of a front and rear wall l2 and I4, respectively arranged in parallel in spaced relation and connected at their upper end by a. relatively thin bridge I6.

Each of the walls is of the same shape, being narrowest at the lower end and tapering putwardly upwardly, with the sides converging, at the upper portion thereof, to the bridge IS.

The outwardly tapering portions of the walls are each provided with flanges l8 facing one 6 another, to thereby form side walls for the keyway 20, intermediate the walls. I! and M. The opposed flanges have their edges spaced to form guide slots 22 in the side walls for the tapes 24, hearing the rows of fastener elements 26.

The slide Ill operates in the usual manner by admitting into each of the two keyway openings 28 formed on either side of the bridge one of two facing rows of fastener elements 26, the supporting tapes 24 being inserted into the guiding '16 slots 22. As the rows of fastener elements pass outwardly of the slide outlet at, at the narrow end thereof, by moving the slide upwardly along the rows, the facing fastener elements are urged by the side walls to interlock.

For the purpose of-manipulating the slide, the front wall 92 may be provided with means for manual engagement, such as the closed loop 32, which may itself be manually grasped or within which a ring, ribbon or chain may be attached as in a manner thatmay be readily understood and which, therefore, it is not thought necessary to be here shown.

The slide it is provided, at its upper end in the usual manner, with means for separating 30 and disengaging'the fastener elements to open them. Such means may comprisethe wedgeshaped edge 33, of the bridge l6, which, upon pressing the slide downwardly, separates and disengages the adjacent interlocked elements from one another.

To provide means for engaging the slide on the rows of fastener elements to prevent involuntary or inadvertent disengagement of the fasteners after they have all been interlocked, each 40 flange on each side is provided with a squared notch 34 in its edge, at a point adjacent the upper ends of the flanges, the notches in opposed flanges on each side forming a squared aperture 86 in the side wall of the keyway 20 of a size'suitable to accommodate the non-fastening end pieces 38 provided at the upper end of each fastener row to block the removal of the slide from-the interlocked rows of fasteners.

In accordance with the usual practice, these members 36 are somewhat larger than the fastener elements so that while they are small enough to be admitted into the keyway 20 through openings, 28, they -are.sufliciently large to form a combined widthywhen juxtaposed,

too large to permit their passage through the outlet opening 3|].

It will now be apparent-that as the rows of fasteners are completely interlocked, the end pieces 33 will be within the keyway 23, opposite the squared openings 36. It will, therefore, be clear that by slightly spreading the edges of the tapes apart, these end pieces 38 will be forced with their rear edges into the squared openings 36 to engage the slide thereon against inadvertent movement thereof.

It will also be apparent that to release the slide for movement, a slight convergent movement of the tapes will sufllce to release the end piece from the squared openings 36 and thus freethe slide for movement.

This completes the description of the slide for separable fasteners of the present invention. And it may here be stated that besides being highly effective and eihcient for its purpose and simple to operate, it is also highly economical to manufacture for the reason that the locking means thereon are capable of being formed in one and the same operation, forming the slide, requiring no further operation or processing.

It is to be understood that while the present invention has itsgreatest use in thermoplastic slides, it is equally suitable for applicability with metallic slides. I, therefore, do not wish to be limited to the embodiment herein described, but

desire to be protected for any modifications and variations that may be made without inventive effort and with the spirit and scope of the invention and of the appended claim.

I claim:

In combination with cooperating rows of hookless fastener elements arranged on supporting tapes, each row having a squared end piece, a slide having spaced downwardly convergent front and rear walls to form a keyway and flanges on the sides of said walls facing one another to form side walls for the keyway, a recess in the edge of each flange adjacent its upper end, the recesses in opposed flanges forming an aperture adapted to receive the rear edges of end pieces, said end pieces being of such length that their combined length is less than the distance between the flanges of the keyway above the recesses and greater than the distance between said flanges below said recesses whereby said end pieces will enter said slide only as far as said recesses and will bepositioned relative to said recesses whereby a lateral movement of said end pieces will 'cause the rear ends thereof said recesses to thereby engage the slide against inadvertent movement.

ARTHUR LE VERNE HYDE.

to enter 25

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