DE1069543B - Zipper and \ experienced and \ or direction to its manufacture - Google Patents

Description

GERMAN

The invention relates to a slide fastener comprising two rows of coupling elements fastened along the edge of a carrier strip made of permanently deformed !, flexible material with a round profile, which is wound in a meander shape and folded in a U-shape spaced around the edge of the support strip, the attachment the row of coupling elements is basically the meander turns. The invention also relates to methods and apparatus for making such slide fasteners.

A zipper is already known in which the links from one to the other in constant change curved, continuous length of wire are formed, the reversal points to form for fastening The clamp feet serving on the carrying tape are bent downwards from the web. It arises in the process an essentially U-shaped row of staples, which can also be used by the end user with an appropriate stapler can even be attached to a strap or the like in any length. To create the locking elements the web parts of a wire length are held like an eyelet, while the web parts of the other wire length in the middle are bent like a hook out of the plane of the respective web.

It is also known, the fastener row of a slide fastener in the form of an endless wire screw to produce and by means of a cord insert, which is pulled through the screw, on the fastener tape to fix. With such zippers you already have the surfaces of the two with each other cooperating closure halves formed identically, for example by the wire profile provided at the relevant point with a flattening in the direction of the longitudinal axis of the closure. For fixing from rows of spherical links in the form of a wire screw one has the one drawn through the screw Cord sewn on the edge of the tape. But it is also already known, a helical row of coupling elements to be sewn directly onto a tape, whereby the two sewing threads are intertwined each lies within the coupling elements.

It is an object of the invention to provide a slide fastener that is not only easy to manufacture, but also is inherently highly flexible even with the smallest dimensions and it is ensured that after its attachment to the edge of a piece of fabric od. Like. The engagement surfaces despite the flexibility of Strips maintain their relative position with respect to the edge of the fabric.

The invention is based on a zipper made of two fastened each along the edge of a carrier strip Rows of coupling elements made of permanently deformed, flexible material with a round profile, which Meander and wound around the edge of the

and method and apparatus
for its manufacture

Applicant:

Cue Fastener, Inc.,
Stamford, Conn. (V. St. A.)

Representative: Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse

and Dipl.-Chem. Dr. rer. nat. E. Frhr. v. Bad luck man,

Patent Attorneys, Munich 9, Schweigerstr. 2

Claimed priority:
V. St. v. America November 22, 1954

Lawrence Schwartz, New York, NY (V. St. A.),
has been named as the inventor

Support strip are folded around at a distance in a U-shape, the attachment of the row of coupling elements in the Basically the meander turns takes place. The invention is seen in the fact that at the bending points in the area the U-shaped folding the round profile in a manner known per se to form the coupling element engagement has a flattening and widening in the direction of the longitudinal axis of the closure, in which case it is known per se Way, the row of coupling elements is attached to the support strip by a seam. Because of the simple shape both the coupling elements, as well as the engagement surfaces, it is possible, the fastener strip in extraordinarily manufacture small dimensions. For example, it is possible to manufacture it so that it has a Has a thickness which only slightly exceeds that of the carrier material. The zipper according to FIG the invention has a flexibility that that of helical spring-shaped closure strips still exceeds. Because the meander turns are fastened by means of a seam along the edge of the carrier tape they can lie flat on both sides of the supporting fabric, ensuring this is that despite the flexibility and the small size of the fastener strip a firm connection exists between the row of coupling elements and the carrier material. With this training it is also impossible that the individual coupling elements, for example by twisting the closure strip from their position with respect to be brought to the edge of the carrier material and at the same time

909 650/3

3 4

a safe and easy production of the coupling element is carried out or that the stitch-forming finger

endanger intervention. In addition, they can be heated electrically to produce them.

development of the zipper according to the invention only The production of the zipper according to the invention

relatively few simple work steps required. So it is so easy to conclude that practically everyone can

The fastening seam can be designed in the manner 5 manufacturer who has suitable aids, the

be that the zipper slider can produce the closures required by him on the side.

to be led. But it is also possible to use the slide.

perform in a manner known per se on the lateral reversals by means of an edge sewing machine

make the meander turns to lead laterally. which in place of the ordinary thread a wire

As already mentioned, the invention also relates to an io-shaped or a spring-shaped plastic material Method and apparatus for making one is used. For example, you can have one zipper strip according to the invention. There are well-known edging machines easily available on the manufacuring numerous Known methods and devices to develop the zipper according to the invention unstel coupling element rows from permanently deformed !, flexible ones, by simply inserting the mandrel in the arch-shaped Manufacture material with a round profile. Arranges at a 15 gene path of the gripper, so that if known method is a length of wire with which the gripper used to sew around the fabric edge Distance between the links of the finished zipper - thread-like material wraps around the edge of the fabric, next bent back and forth in constant alternation, one of which lies around the thorn that is carried along up the turning points of the meandering bend-free loop is formed, which is in a certain way gen U-shaped bent towards each other and at a distance of 20 from the edge of the fabric or tape be-carrier material be attached. In an intermediate place. After zipping this way step if the coupling elements have been produced, for example, you can use a number of them by bending out noses or the like. Manufactured. Completion-serving, usual operations

It is also known to subject the coupling element rows in; this includes, for example, the installation

Form of a continuous screw over a mandrel, 25 a slide, fastening the end stops, the

possibly with simultaneous heating of the cutting to the desired length, etc., so that

To shape wire material, then cut it into lengths - a high quality, cheap and easy to manufacture

which and on the carrier material may be zipped under the zipper.

the help of a cord pulled through the screw in addition to the simplicity and lightness of the

to sew. 30 Production of the slide fastener according to the invention

In contrast, the invention provides a method, there is a further advantage that, as is known,

for the production of a zipper strip for one the right and the left zipper half in

Closure of the type described, which can thereby be produced in a single operation, so that one

is characterized in that the flexible round profile undercits each piece of such a zipper strip -

continuously into a 35 parallel to the carrier tape plane and the subsections obtained in this way as a combined

Loop of the meander, then use halves of a zipper that work on it

at a distance around the free edge of the support strip.

folded and then again the following A special field of application of the invention

Loop of the meander is wound, which consists in using the zipper for

Loops of the meander during the formation of the 40 producing a relatively little permeable

Closure strip to be attached to the support strip. gen closure. This is due to the small dimensions

Advantageously, during the continuous gene of the zipper material and by firm connection

Forming at the folds of the fastener strip sewing the material with the tapes as well as through the

Coupling element engagement surfaces, in a manner known per se, closely intermesh the two closure halves

made possible by flattening the lead 45 round profile. With closures of this type it is natural

bend shaped. In contrast to the known method, it is preferable to use the zipper tapes as

Ren, the closure strip is made from rubber or another impermeable material

to produce the wire-shaped starting material as well as its loading material.

The invention is described in the following on the basis of the schematic

one after the other and independently taking place 50 table drawings on an exemplary embodiment!

Work steps, but explained in more detail in a single work.

gear at the same time. It is therefore irrelevant whether, as FIG. 1 shows a schematically drawn perspective carrier material the usual carrier tape or the edge jvische representation of the production of the invention Garment or the like. Serves. The inventive, moderate zipper, whereby the process is simple and time-saving and allows 55 loops extending around the weave edge to be somewhat overlooked are shown with a high working speed and a drifting; produce a single device. Fig. 2 shows a schematic cross section through

During manufacture, one can advantageously have one closure halves coupled to two;

Closure longitudinal axis parallel, heated mandrel with Fig. 3 shows a schematically drawn base

a preferably sharpened deflecting edge for 60 torn the arrangement shown in FIG.

Deflection and flattening widening of the round As can be seen in particular from Fig. 1, is at the

Use profiles, the edge 10 of a material 8 along the carrier strip edge, which is a

is led. Tape or around the fabric of a garment

It is already known that a plastic adden 6, e.g. B. a single thread machine-made stockings, which are attached with 65 polyamide threads as part of a seam, Fully synthetic threads are sewn together, the loops 11 of which extend freely around the edge 10 Short piece of empty seam going into the open air by hot stretching, using an edge sewing machine deform to consolidate their bond. The material 8 of the plastic thread 6 can do this in the usual way be achieved by that the empty seam is fastened by a thread 9 between two ways. The heated plates 6, which rest against one another in a resilient manner, are therefore wrapped around a mandrel 7, which is shown in FIG

Claims (1)

is drawn in dashed lines, laid around, and this mandrel is guided parallel to the edge of the material 8, so that a plurality of free-standing loops 11 are formed which extend around the edge 10 of the material 8. The mandrel 7 has a free end in the direction of movement of the manufacture of the row of coupling elements, so that the loops 11 slide off the mandrel when the supporting material 8 is pushed further through the edging machine. The middle portions of the loops 11 can therefore be deformed in any way in order to produce the flattened areas and widened areas 12 which engage in the corresponding ones of the other fastener halves. For example, the plastic thread 6 can be heated or the plastic thread 6 can be pressed onto the mandrel 7 under pressure in order to flatten the plastic thread 6 in the vicinity of the loop skin extending around the material edge 10. The flattened section of each loop should generally, but not necessarily exactly, run parallel to the edge 10 of the carrier material 8. One method of deforming the plastic thread 6 is to pull the thread 6 tightly around a heated mandrel 7 which has a protruding pointed edge 7a so that the thread 6 is suitably deformed at the portions contacting this edge. The obvious advantage of this method is that the flattened areas and widened areas 12 are then formed while the plastic thread 6 is sewn onto the material 8 without a special, temporally separated deformation process needing to be provided. When the plastic thread 6 is sewn to the material edge 10, the mandrel 7 can be removed and the part of the fastener strip thus produced can be assembled together with a corresponding one to form a fastener. According to FIGS. 2 and 3, this corresponding closure half also consists of a plastic thread 6 'which is placed around the edge of the carrier material 8' and connected to it by means of a thread 9 '. This second fastener half can be cut from the same strip since the slide fastener coupling elements are symmetrical. The mutual angular position of the parallel sections of the plastic threads 6 and 6 'is shown in the schematic representation of FLg. 3 reproduced greatly exaggerated for the sake of clarity. After the slide fastener according to the invention has been produced in the manner described above, it can be subjected to a number of further processing steps, such as installing a slider, attaching end stops or the like, which do not form part of the invention. The manufacture of the row of coupling elements can be explained in detail with reference to FIG. If one begins with the description at the right end of the illustrated part of the zipper, one recognizes that part of the upper leg 13 of the bending point 11a just formed rests on the upper side of the carrier material 8 and is held by the loop 14 of the thread 9. The direction of the plastic thread 6 is then reversed, forming a reversal point 15 from which a further leg 16 extends parallel to the leg 13, with a further bending point 11b extending around the material edge 10 extending on the leg 16 adjoins, which extends in the vicinity of the previously formed around the mandrel 7 around bending point 11 α. The plastic wire now runs again in the direction of the carrier material 8, but now below this material, and forms a lower leg 17 which runs through a loop 18 of the thread 9 which lies on the underside of the material. The two threads of the loop 18, as indicated in a greatly exaggerated scale in FIG. 1, naturally each pass through the same puncture hole 4. After the loop 18 has passed through, the direction of the plastic thread 6 is reversed, as a result of which a further reversal point 19 is created below the carrier material 8, which likewise runs through a loop 20 of the thread 9 adjacent to the loop 18. After passing through the loop 20, the plastic thread 6 is formed into the lower leg 21 by a gripper (not shown) of the machine and placed around the mandrel 7 in order to form a further bending point lic freely extending around the material edge 10. From here, the process described above for the bending point 11a is repeated continuously. As can be seen, the thread 9 defines the plastic threads 6 along the edge 10 of the carrier material 8 in chronological coordination with the formation of the bending points 11, with the thread loops 14, 24 formed on one side of the material for fastening the on this side of the Support material 8 lying legs 13, 16 and 23 are used, while the loops 18 and 20 are used to fix the legs 17 and 21 lying on the other side of the material. The production of the row of coupling elements continues in this way along the edge 10 of the carrier material 8. The peculiarity of the overlock stitch makes it possible to vary the thickness of the synthetic thread 6 over a large diameter range, for example from the thickness corresponding to a relatively coarse or thick carpet or canvas binding thread to fine thread counts of the usual sewing thread. If the plastic thread 6 is sufficiently thick, and if the stitches are tight enough, or if the fastening thread 9 is strong enough, it is not necessary to attach special bead cords to guide the slider, because the stitch loops 14 and 24 can then as Guide rails are used for the slide. As already mentioned, the zipper can be made so that it is not very permeable to water or air; in this case they must be around the material edge 10. extending bending points of the plastic thread 6 must be arranged very close to one another and in the immediate vicinity of the edge 10 of the carrier material 8, so that there are no significant air pockets between the individual loops 11. Patent claims: 1. Zipper made up of two rows of coupling elements each fastened along the edge of a carrier strip made of permanently deformed !, flexible material with round profile, which meander-shaped are wound and folded around the edge of the support strip at a distance in a U-shape, wherein the attachment of the coupling element row is basically the meander turns, characterized in that, that at the bending points (11) in the area of the U-shaped fold the round profile (6) in known way to form the coupling element engagement in the direction of the longitudinal axis of the closure has a flattening and widening (12), the