DE1218775B - Zipper - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

A44b

German class: 44 al - 19/00

Number:
File number:
Registration date:
Display day:

L 38463 VII a / 44 al
March 17, 1961
June 8, 1966

The invention relates to a zipper with a continuous, made of plastic od. The like. Existing row of links, which are attached to the limbs by a seam with the support tape connected is.

When attaching such rows of plastic links to a fastener tape by means of a Seam it is important to protect this seam and the row of links so that the object in question, for example an item of clothing that can be ironed without damaging the row of plastic links during ironing will.

It is known to fasten rows of zipper links to the fastener tape by means of a lockstitch seam and at the same time sewing on additional threads or tapes through which the rows of zipper links be covered and thus receive a bracket protection. It is still used on sewing machines that are used for Manufacture of buttonholes are known to introduce an additional thread, making the buttonhole is reinforced. This additional thread is also inserted by a corresponding thread layer of the sewing machine and sewn in.

The invention consists in that between the upper thread of the seam and the top of the limb of the row of links one or more intersecting the seam line between stitches of the upper thread Additional threads are guided. The additional threads preferably alternate at each seam line crossing point in terms of their altitude from each other.

As a result, a double-sided bracket protection of the row of links is provided by simple means with only a single seam achieved, while previously additional threads had to be supplied for this purpose or the The row of links would have to be fastened in the reverse position in the sewing machine, which only with great difficulty is feasible.

This secure bracket protection can be achieved in a simple manner by the invention, without particularly woven ribbons or special follower cords can be sewn in.

The invention further relates to a method for securing the continuous rows of links of a Zipper by means of a seam described above, the novelty of the invention being that above the row of links in the area in front of the puncture point of the needle one or more thread guides for one or more additional threads moved back and forth in such a cyclical manner with respect to the stitch point that after the upper thread stitches a crossing of the additional thread or threads with the seam line is formed.

Zipper

Applicant:

Lightning Fasteners Limited, London

Representative:

Dr.-Ing. H. Fincke, Dipl.-Ing. H. Bohr

and Dipl.-Ing. S. Staeger, patent attorneys,

Munich 5, Müllerstr. 31

Named as inventor:

Geoffrey Warburton,

Cardiff, Wales (UK)

Claimed priority:

Great Britain 17 March 1960 (9429)

It is also proposed a device for performing this method, in which a continuous row of links and a strap are connected by at least one seam where-t in the case of the row of links and the carrying tape, the sewing stitches are fed to the sewing point and where the What is new about the invention is that thread guides that oscillate in the sewing cycle are arranged in front of the sewing point which are connected to the main shaft of the sewing machine via a gear unit. Preferably be this thread guide is actuated via a spring-loaded cam lever gear.

The thread guides mentioned are preferably on a vibrating, rotatable or otherwise suitable Way trained holder arranged so that the height of the additional threads in the course the sewing movements are continuously changed, whereby the bobbins of the additional threads in time with the oscillation or rotation of the thread guide holder by one common axis can be rotated.

The invention will be elucidated with reference to the drawings which show exemplary embodiments of the invention, namely shows

F i g. 1 part of a zipper with a slider,

F i g. 2 part of the continuous row of links ßhl h i i ß Mß

of the zipper according to FIG. 1 on a larger scale,

609 578/33

F i g. 3 a diagram in an even larger and partial d. H. on the side of the additional thread 123, which of

wise exaggerated scale, for the representation of the carrier tape 104 and the row of links 101

Sewing stitches by means of which the row of links is reversed.

F i g. The row of links 101 can be attached to the fastener tape 104

F i g. 1 is sewn to a carrier, 5 by means of a device shown in FIG. 4 and 5 sewing machine shown

F i g. 4 is a general perspective view of a 131 being sewn. The sewing machine 131 can

Sewing machine for sewing the row of links to be a conventional chain stitch machine, which for

F i g. 2 on a carrier, making the double chain stitches two threads 121

5 shows a top view of the sewing machine according to and 122 (which connects the threads 121 and 122 of FIG. 3

F i g. 4 on a smaller scale, corresponding to io). The sewing machine 131 is with

Fig. 6 is a detailed plan view of part of an attachment 132 fitted to the fastener tape

Sewing machine according to FIG. 4 on a larger scale, 104 from a supply spool 133 step by step the sewing

Fig. 7 is an elevation of the sewing machine according to FIG. 4 and the meandering link row 101 of one

on the same scale as FIG. 6, seen in the direction of the other coil 134 of one edge of the carrier tape

of the arrow A of FIG. 4, 15 104 feed. There are also feeding devices

FIG. 8 shows a detail of the sewing machine of FIG. 4 135 provided around two additional threads 123 and 124

to 7, (which correspond to the additional threads 123 and 124 of FIG. 3

F i g. 9 shows a section along the line IX-DC of the speak) in front of the sewing needle 136 of the sewing machine

Fig. 8, 131 to cross periodically. The threads 121, 122, 123

FIG. 10 shows a section along the line X-X of FIGS. 20 and 124 being drawn off from bobbins 137.

Fi g. 8, ■ - The additional part 132 consists of a base plate 1,

FIG. 11 shows a detail of the sewing machine from FIG. 4 on a base plate 2 of the sewing machine 131

up to 10 on a larger scale, under a sewing head 3 of the machine by screwing

Fig. 12 is a section along the line XII-XII of the benlOO is attached (see also Figs. 6 and 7). That

Fig. 11, 25 carrier tape 104 is gradually fed through two

F i g. 13 a part of the sewing drums 4 and 5 is fed somewhat schematically. The feeding machine when sewing the row of links after drum 4 is mounted on a shaft 6, which F i g. 2 to a carrier, extending through the base plate 1 parallel and longitudinally

14 shows a part of FIG. 13 in a different direction to the base plate 2 of the sewing machine.

Working position and 30 stretches, the feed drum 4 on the

15 a part of FIG. 13 in a further shaft 6 by means of an end plate 7 and screw 8 Working position. is consolidated. The feed drum 5 is on one

The in F i g. 1 shown part of the zipper bolt attached to an arm 10, which is attached to the

consists of two rows 101 connected to one another base plate 1 can be rotated by a bolt 11

Coupling elements 102 which are fastened to adjacent 35 by means of stitches 103. As shown in Fig. 4, the fastener tape

bare edges of flexible band-shaped carrier 104 to 104 under the feed drum 4 and then between

are sewn. A slide 105 with a tension member see this and the feed drum 5 through

106 couples and uncouples the links of the tear guide and leaves the machine from the top of the

Closure in the usual way. From Fig. 1 is the feed drum 5. The feed drum 5 is against

it is evident that the stitches 103 the row of links 101 partially 40 pressed the feed drum 4 by a spring 12,

cover wise and a means for guiding the which between the arm 10 and a retaining mandrel

Represent slide 105 along the row of links 101. 13 is attached to the base plate 1. The roller 4

The in F i g. The embodiment of the link shown in FIG. 2 is gradually replaced by an at the other end of FIG

The series 101 consists of U-shaped coupling elements shaft 6 by means of an end plate 15 and screw 16

102, each U-shaped turn being driven on its base 45 attached ratchet wheel 14. The clin-

has a coupling part 107 and legs 108 and whence kenrad 14 is progressively through one on one

pawl attached to one end 111 of each link 102 by a reciprocating bracket 18

Transition sheet 112 with an adjacent end 17 is driven. After every step it will

113 of a preceding link and the other ratchet wheel 14 by a pawl 19, which at

The end 114 of each link is held by a further over 50 of the base plate 1. The coat hanger

Aisle bend 115 with the adjacent end 116 18 can be reciprocated by a connecting rod 20

of a following link (except when moved here. One end of the connecting rod

last string links). This so-shaped link 20 is rotatably connected to the bracket 18, and that

The other end of the connecting rod 20 is rotatable

called. The row of links 101 is connected from a conventional 55 with a lever arm 21, which by means of

Plastic material made. fastening screws 22 with an existing Mn

The meander link row 101 of FIG. 2 is fixed to the movable shaft 23 of the sewing machine a fastener tape 104 sewn by stitches 103, which is connected. Such a reciprocating one as in Fig. 3 is shown by two threads 121 and shaft 23 is provided on most sewing machines are formed double chain stitches. See on one side 60 to power reciprocating teeth, of the carrier tape 104 are two additional threads 123 and which in cooperation with a presser foot 124 provided, which lead each other at intersection points - the material to be sewn through the machine, th 125 that are between each pair of adjacent In the sewing machine 131 are the feed punctures 126 of the thread 121 teeth are not needed by the fastener tape and are of the reciprocating 104 lie, cross so that the additional threads 123 and 65 movable shaft 23 have been removed, which instead 124 held in place by thread 121 which has been connected to lever 21. Means will. From Fig. 3 it can be seen that one of the levers 21 and the connecting rod 20 move The set thread 124 always lies over the additional thread 123, the reciprocating shaft 23 the bracket 18

5 6

and thus the ratchet wheel 14, which the tape is otherwise closed during the feeding of the carrier guide drum 4 rotates gradually. tape 104 and the row of links 101 as usual when the carrier tape 104 drifted through the machine in this way. The stitch width of the sewing machine 131 and the is performed, the meandering link row 101 of the position of the gear 24 with respect to the sewing fastener links the edge of the tape 104 such 5 needle is appropriately adjusted where the fed that the row of links around an edge of the stitch width through the gear 24 and the ratchet wheel Volume 104 passes around. The row of links 101 is regulated 28 and the row of links 101 at by means of a gear 24 (see also Figs. 11 and 12) operation of the sewing machine fed to the edge of the carrier, whose teeth for receiving parts of the band 104 is sewn. The ones from the edge corresponding to the coupling elements 102 between the teeth. 10 which the row of links 101 is sewn on, entchend are shaped. The gear 24 has around its distal edge of the fastener tape 104 will do to a degree a slot 241, which is any number of the nel-shaped incision 441 between the base wheel 24 divides into two partial teeth. The gear 24 is plate 2 and a guide plate 44 out which on the side facing the base plate 2 that of a base plate on the base plate 2 of the machine 1 supported by a shaft 25, which is attached to fixed plate 45, the Fühsich through the base plate 1 perpendicular to the base plate 44 by means of compression springs 46 from the plate Plate 2 extends, and is at the end of the shaft 25 pressed away 45 against counter-bearing, not shown, and means of an end plate 26 and screw 27 attached. in their general position with respect to plate 45 At the other end of the shaft 25 is held by means of an end pin 47. One in Fig. 4 viewing panel 29 and a screw 30 a further latch ao bare, but in the other figures for reasons wheel 28 attached. Below the end plate 29 is the omitted leaf spring 58 for the sake of clarity and serves to a bracket 31 can be rotatably moved back and forth to keep the fastener tape 104 under tension when arranges, which carries a pawl 32, which by means of an es ^ between the spring 58 and the base plate 2 towards passes between a pin 34 on the base plate 1 and through the drums 4 and 5 of the and a pin 35 of the spool 133 extending on the pawl 32 is withdrawn.

Tension spring 33 is pressed against ratchet wheel 28. From Fig. 6 it can be seen that between the free

The bracket 31 is by means of a connecting rod 36 corner of the tape guide plate 44 and the gear

rotatable to and fro, which at its 24 enough space for the coupling elements 102 of the

one end to the bracket 31 and on its other row of links 101 so that it is on the free edge

End is connected to the bracket 18. A locking 30 of the fastener tape 104 can be pushed completely

pawl is not provided for the ratchet wheel 28, as can. Another tape guide plate 48 is un-

if the ratchet wheel 28 is positioned indirectly next to the tape guide plate 44 with a pawl

would operate some degree of over-seeing. The other tape guide plate 48 is on from

movement of the bracket 31 would be necessary and so an exact pin 49 protruding from the mounting plate 45

Feed of the row of links 101 is not brought or not brought 35, wherein a compression spring 50 is provided,

would be easily possible. However, in order to have an accurate feed normally the tape guide part 48 from the

tion of the row of links 101 by the ratchet wheel 31 plate 45 away and against a counter-

at every step to effect when pushing the stirrup bearing. Between the base plate 2 and

31 moved to the end point of its rotational movement, the further tape guide plate 48 extends

has and the ratchet wheel 28 correspondingly through the 40 along the free edge of the further Bandführangs-

Pawl 32 has been advanced, in this position plate 48 has a deep groove which is deeper than the

without moving back through a continuously acting speaking channel 441 between the base plate 2

Friction brake held, which consists of one and the tape guide plate 44. The free edge of the

There is a fiber block 37, which by means of a compression spring 38 is further tape guide plate 48 with an ab-

45 bevel 51 provided against a cylindrical surface 39 of the shaft 25, which is inclined in a ramp 52

is pressed. As can be seen, the brakes hold up.

kung of the fiber block 37 the ratchet wheel 28 in any- When operating the additional part 132, as far as described ben reached by it during its rotary movement, the fastener tape 104 are stepwise through the Position when the bracket 31 is moving backwards. Feed drums 4 and 5 and the row of links begins. 50 101 also gradually fed by the gear 24. The row of links 101 is fed into the sewing machine 131, and the links 102 of the row of links 101 become from a rotatable supply reel 134 to an edge of the carrier tape 104 through the back and forth leads and reaches a guide plate 40 with a forward sewing needle 136 of the sewing machine 131 thinner Edge portion 41 on which links are sewn, and then after the fastener tape 102 of the link row 101 ride. The guide plate 55 104 with the row of links 101 the sewing position through-40 is shaped in such a way that it has the row of links 101 running into it, the transition arcs 112 of the row of links engaged with the teeth of the gear 24 for feeding 101 from the bevel 51 and the ramp 52 of the the row of links 101 leads, as best grasped from further tape guide plate 48 and thereby F i g. 12 can be seen. Since the tape feed stream when passing the ramp 52 from the fully sit down 4 and 5, as well as the gear wheel 24, are pressed outwards for the closed position, so that the links guide the row of links stepwise 102 of the strand 101 from the edge of the belt 104 the row of links 101 will stand outwards when leaving the thin.

NEN edge portion 41 of the guide plate 40 in a the To a more elevated or less full line

Edge of the fastener tape 104 comprising engagement with stitches on the surface shown in FIG. 1 visible side of the

brought the latter, being in the tape feed 65 zipper to get which in terms of

drum 4 and 5 circumferential grooves 42 and 43 respectively, fill roughly the double chain stitch on the other

are seen to be equivalent to the row of links 101 at the edge of the side of the zipper, becomes a

Tape 104. The sewing machine 131 arrangement with reciprocating slide bars

7 8

proposed (see Fig. 6 and 7) for the introduction of other, the respective shown in Fig. 13 against two Additional threads 123 and 124 (Fig. 3). These overlying extreme positions. The additional threads Sliding stirrups are denoted by 53 and 54, whereby the 124 and 123 have crossed each other, whereby the sewing sliding stirrup 53 directly on the one of the base thread 121 between them. As can be seen Plate 2 remote side of the sliding bracket 54 arranged 5 the thread guides 55, 56 complete half a Benet is. The sliding brackets 53 and 54 extend through the operating cycle with the accessories crossing once a groove in which threads 123 and 124 adjoining base plate 2 with sewing thread 121 in between The bart side of the base plate 1 is parallel to the base, while the sewing needle has a full operating plate 2, but inclined with respect to the longitudinal direction, completes the cycle by moving away from the position of the the base plate 2. The sliding brackets 53 bear at their io Fig. 13 through the position of Fig. 14 in the Steldem Sewing area closest to the machine in fig. 15 moves. During the next vol ends each thread holder in the form of tubular len cycle of the sewing needle 136, during which they are Thread guides 55 and 56. At their other ends, from the position of FIG. 15 by the position of the after passing through the channel in the basic F i g. 14 in the position of FIG. 13 moved, full guide plate 1, the sliding brackets 53 and 54 are by double 15 ren the thread guides 55 and 56 a next half Pivot bearings on the drive rods 59 and 60, respectively, operating cycle analogous to the first just described steers (see also Figs. 8, 9 and 10). The drive rods half cycle.

59 and 60 are attached to the end bearings 61 and 62, respectively. It can be seen that, apart from the reels, rotatably mounted cam followers 63 and 64, respectively, steers 133 and 134 to store the carrier tape 104, and the cam followers 63 and 64 are their- 20. And the rows of links 101 and apart from the one on one of the base plate 2 of the bobbins 137 for the threads 121, 122, 123 and 124, the machine-mounted plate 66 outstanding whole arrangement for sewing the rows of links pins 65 attached. A helical looping of the additional threads 123 and 124 with the sewing toothed drive wheel 67 of the base plate 1 is provided on a rotatable main 101 on the carrier tape 104 and weave or dwell 57 of the machine, and the thread 121 is arranged on a single block 1 , which is keyed to the main shaft 57. and therefore forms a closed unit, which furthermore a helically toothed gear wheel is provided as such on a sewing machine 68, which can be inserted into the drive wheel 67. Before attaching the block (which grips the base and drives a shaft 69 which extends through plate) 1 to the machine, these must usually extend into a bearing 70 in plate 66. On the side of the plate 66 remote from the feed teeth gearwheel 68 provided by a sewing machine, two eccentrically arranged circular cam and on the reciprocating shaft 23 instead of discs 71 and 72 with the shaft 69 are removed from the reciprocating shaft 23 wedged that the lever arm 21 of the block 1 is fastened to the cam disks 71 and 72 together by 180 °. Furthermore, the drive gear 67 must be out of phase with the. The cam disks 71 and 35, respectively, mounted 72 drive the rotatable main shaft 57 of the machine, which are driven on the cam followers 63 and 64, while the block 1 itself with the cam follower rollers 73 and 74 installed on it. The plate 2 of the machine in any suitable manner cam followers 63 and 64 are connected in such positions. As can be seen, by means of the gene can be held that the cam follower rollers 73 and 74 block 1 a conventional sewing machine into such under the action of tension springs 75 and 76, which 4P for attaching the rows of links 101 to the support between the free ends of the cam followers 63 'Band 104 transformed in the manner described, or 64 and rods arranged on the plate 66.

77 and 78 extend continuously against the cams. Many variations are possible. For example Press washers 71 and 72. The ratio between the sewing machine does not need a double chain the drive gear 67 and the gear 45 sewing machine to be. You can have a single sprocket 68 is chosen so that the slide bars 53 and 54, sewing machine or a sewing machine, the locking tube extreme end positions between each stitch stitches. In addition, the link row cycle needs of the machine change so that when the line is not in the process shown in FIG. 2 sewing the way shown of the rows of links 101 to the edge of the support form, but may be any other suitable band 104, the two by the tubular thread 50 shape, for example that of a screw, have. It Guide 55 and 56 running additional threads 124 and 123 is not necessary that of the two additional threads periodically in the in F i g. 3 crossed and the same thread always on the other thread will. lies. It is possible to feed the additional threads of the sewing needle. The crossing itself is best shown in FIG. 13, so that first one thread and then 14 and 15 can be seen. In the 55 shown in Fig. 13, the other thread is on top. That could be achieved The sewing needle 136 is in position by placing the thread guides 55 and 56 on Sewing thread 121 in its uppermost position. The thread- a swinging or rotating holder in place Guide 55 with its additional thread 124 is the sliding bracket 53 that can be moved back and forth in an extreme end position, and the thread guide 54 and 54 attaches. The vibrating or rotating 56 with its additional thread 123 in the opposite movement of the holder would cause the pulling ends extreme position. The needle 136 moves set threads in both the upper and lower now look down into their in F i g. 14 as well as in the lateral layers with reference to FIG lowest position, while the thread guides 55 and 56 alternate the sewing needle. When the holder is rotatable both occupy an intermediate position, and that is, the bobbins 137 for the additional threads 123 should sentence threads 123 and 124 begin, the sewing thread 121 65 and 124 around each other in the same sense as the to surround. In the position shown in FIG. 15, the holder has to rotate in order to twist the additional threads the needle 136 assumed its uppermost position, 123 and 124 before this through the thread guide and the thread guides 55 and 56 are in their run to avoid. Further additions can be made

ίο

Set threads beyond two, for example four additional threads, can be used.

Claims (6)

Patent claims: 1. Zipper with a continuous, made of plastic od. The like. Existing row of links, which is connected to the limbs by a seam with the fastener tape, characterized in that between the upper thread (121) of the seam (121, 122) and the top of the Link legs (108) of the link row (101) one or more additional threads (123, 124) crossing the seam line are guided between stitches (126) of the upper thread (121). 2. Zipper according to claim 1, characterized in that the additional threads at each Alternate the elevation of the seam line crossing point. 3. A method for fastening the continuous row of links of a zipper by means of an ao seam according to claim 1, characterized in that one or more thread guides (55, 56) in the area in front of the puncture point (126) of the needle (136) above the row of links (101) for one or more additional threads (123, 124) are cyclically moved back and forth with respect to the stitch point, in such a way that after the upper thread stitches a crossing of the additional thread or threads (123, 124) with the seam line is formed. 4. Apparatus for carrying out the method according to claim 3, in which a continuous row of links and a support tape are connected by at least one seam, the row of links and support tape being fed to the sewing point in time with the stitching, characterized in that thread guides oscillating in front of the sewing point in the sewing cycle (SS, 56) are arranged, which are connected to the sewing machine main shaft via a gear. 5. Apparatus according to claim 4, characterized in that the thread guides (55, 56) over a spring-loaded cam-lever gear is actuated. 6. Apparatus according to claim 4, characterized in that the thread guides (55, 56) are arranged on a vibrating, rotatable or the like holder, such that the height of the additional threads is continuously changed in the course of the sewing movements, the bobbins of the additional threads in the Clock of the oscillation or rotation of the thread guide holder are rotated about a common axis. Considered publications:
German Auslegeschrift No. 1070 002;
German Patent No. 530 963;
Austrian patent specifications No. 209 835,
343; Belgian Patent No. 581225;
French Patent No. 1173 917;
British Patent No. 814,507;
U.S. Patent Nos. 2542764, 2274721. For this purpose 2 sheets of drawings 609 578/33 5.66 © Bundesdruckerei Berlin