IL28170A

IL28170A - A slider for sliding clasp fasteners

Info

Publication number: IL28170A
Application number: IL28170A
Authority: IL
Original assignee: Opti Holding Ag
Priority date: 1966-07-08
Filing date: 1967-06-25
Publication date: 1972-01-27
Also published as: SE342545B; NL6708099A; DE1710879B1; GB1169466A; CH463176A; BE700709A; US3497926A; AT291149B

Description

A SLIDER FOR SLIDING CLASP PASTENERS A well-known form of slider for a sliding clasp fastener consists basically of a top plate, a bottom plate, a wedge-shaped connecting neck, and lateral guiding elements attached to the top and/or bottom plates. In general, the slider is relatively long ' compared with its width, which latter must' be great enough t'o embrace the width of the rows of interlocking elements on the stringers of the sliding clasp fastener it is to operate, and has a throat-like opening in the region of its maximum thickness, such thickness, being provided for the attachment to the slider of members such as catches and pulling members.

Irrespective of the particular details of this basic construction, a slider of this type has the disadvantage that it is not "wringerproo " , that is to say that the slider can be deformed sufficient to impair or ruin ' ts . performance when garments or other fabric to which it is fitted is passed under the hot roll of an ironing machine- in the laundry, because it is subjected to the applied compression. Since the slider -is relatively long compared to its width, its throat-like opening is also relatively long, and thus the slider is the more easily flattened over this. length, with simultaneous deformation of the lateral guiding faces along it. The elongated shape also permits tilting of the slider when garments or the like are fed into the ironing machine with the result that in addition to damage to the' sliders the garments or the like may themselves suffer damage.

The main object of the invention is to provide a slider that has a high degree of resistance to the damaging tendency of ironing machines, a further object being the avoidance of tilting of the slider during ironing.

According to the present invention, a slider for a sliding clasp fastener comprises a top plate and a bottom plate plates, and therefore of the whole slider, "being in the region of the neck. This enables the compression exerted by. an ironing machine to be received and withstood by the plates wher they are supported by the neck, so that the compression is wit'r held from the top and bottom plates where these are separated^ the throat, and thus does not deform them on the guiding elements carried by them.

To facilitate entry of the slider, with the fastener and the material to which it is sewn, into an ironing machine, rther Syfeature of the invention consists in that the top and bottom' plates have a pronouncedly convex external form, most protruding in the region of the neck. This, particularly, if the top and bottom plates are made substantially circular, enables the slider to enter the ironing machine without tilting.

Substantially circular top and bottom plates permit the lateral guilding elements to be increased in width so that they serve also as buffers or stops. Thus, from.their internal guiding faces, co-operating with the wedge-like connecting piece to cause the interlocking elements to be separated or caused to interlock, according to the direction of movement of the slider, to their outer edges, they present broad faces to the thickness of the fastener stringers inside the throat , so that any compression exerted by the ironing machine over-the length of the throat is buffered by the guiding elements and the interposed' stringers, and bending tendency on the top and bottom plates is resisted. Advantageously, the outer edges of 'the buffers or s tops coincide with the plate perimetei Eecause of the thickness ih the region of the connecting piece, recesses may be formed in the convex plates to ' receive additional members such as catches and pulling members, Such members may be rovided in a slider used with a slidin clasp fastener intended for "bed-linen furniture covers or the like, hut usually this is unnecessary, "because in such case it suffices for the top and bottom plates to be gripped between the thumb and the index finger to operate the fastener.

The invention thus provides a slider that directly resists the compression exerted by an ironing machine, even on the parts of the top and bottom plates separated by the throat, and can enter the machine without tilting and therefore with minimised risk of damage to the material by which it is carried.

The invention will now be further described, with reference to an- embodiment shown merely by way of example-in the accompanying drawings, in which :- Figure 1 is a front elevation of a slider, looking into its throat; Figure 2 is a side elevation of the slider; Figure 3 is a section, taken in the direction A-A of Figure 1 ; and Figure k is a similar section taken in the direction B-B.

Top and bottom plates 1 and 2, connected by a wedge-shaped neck 3, have a greatest thickness d in the region of the neck 3. The thickness d is the greatest overall thickness of the fastener (not shown) to v/hich the slider is applied.

The top and bottom plates 1 and 2 are circular (Figures 3 and k) and have a convex or lenticular external form, with the greatest prominence in the region of the neck 3.

This form permits easy entry between the trough and roll of an ironing machine, and since at least one of these components is padded, the resulting compression falls on the • thus region of maximum thickness and is/received by the neck 3, so of the slider on entry is also reduced by the circular form of the top and bottom plates 1 and .2. At the same time, as shown by Figure 3, lateral guiding elements k are extended' to the perimeter of the plate 1 so as to have a width that enables them to act as buffers or stops. These buffers or stops both help to stiffen the- plates and thus prevent their distorting under the action of the ironing machine, and present broad surfaces to the stringers of the fastener interposed between them and the plate 2, so that both the top and bottom plates are supported against deformation over the length of the throat.

The guiding elements k ar shown on the top plate 1 only. They could equally be on the bottom plate 2. Yet again, there could be guiding elements on both top and bottom plates, with an appropriate gap between for the stringers.

Although not shown in the Figures, additional elements such as catches and pulling members can be inserted in recesses formed in the convex top and/or bottom plates.

Claims

WHAT IS CLAIMED IS:

1. A slider for a sliding clasp fastener comprising a substantially conve top plate and a bottom plate which is outwardly substantially convex connected by a wedge-shaped neck, and lateral guiding elemta-β, acting as buffers or stops, attached to one or other or both of the top and bottom plates, characterised in that the top and bottom plates, in the region of the connecting neck are of the greatest thickness and therefore the greatest thickness of the whole slider, being in the region of the neck.

2. A slider as in Claim 1, wherein the outer edges of the lateral guiding members coincide with the plate perimeter.

3. A slider for a sliding clasp fastener substantially as hereinbefore described with reference to the accompanying drawings. Attorneys for Applicants.