US2321951A - Device for the continuous fastening of slide fastener elements on slide fastener bands - Google Patents

Description

June 15, 1943. sUss 2,321,951

DEVICE FOR THE CONTINUOUQFASTENING 0F SLIDE FASTENER ELEMENTS 0N SLIDE FASTENER BANDS Filed Jan. 19, 1940 4 Sheets-Sheet 1 Fig. 1 7

Tl M" W mm W" 55 II i l II n u INVENTOR.

'BEVICE PM! THE CONTINUOUS FASTENING OF SLIDE FASTENER ELEMENTS ON SLIDE FASTENER BANDS Filed Jan. 19, 1940 v 4 Sheqts-Sheet 2 June 1943-7 A. SUSSKlND 1 2,321,951

DEVICE FOR THE CONTINUOUS FASTENING OF SLIDE Junei5,1943." AQUSSK ND 2,321,951

FASTENER ELEMENTS 0N SLIDE FASTENER BANDS Filed Jan. 19, 1940 4 Sheets-Sheet 3 Fig. 6

' INVENTOR.

ATTORNEY June 15, 1943. SUSSKIND I 2,321,951

' DEVICE FOR 'I'HE CONTINUOUS FASTENING OF SLIDE FASTENER ELEMENTS ON SLIDE FASTENER BANDS Filed Jan. 19, 1940 .4 Sheets-Sheet4 V INVENTOR. ALBERT sass/mm ATTORNEY Y Patented June 15, 1943 'ncvlce roa THE CONTINUOUS ras'ranm swarms on s F SLIDE FASTENEB FASTENEB BANDS LIDE Albert Siisskind, Lumo, Switzerland Application January 19, 1940, Serial No. 314,630 In Switzerland: January 11, 1939 4 Claims. (01. 153-1) The object of the invention is a machine for attaching Zipper hooks to their band.

An important purpose of the invention is to I secure, by very simple and rugged means, an accurate and reliable attaching without skewing, buckling 6r indenting said hooks.

A further purpose of the invention consists in indexing or step-by step feeding of the band with exclusion of joints, springs or lever actions and, therefore, in a very accurate and reliable manner.

Further features, object and advantages of the invention will become apparent from the following specification in connection with the accompanying drawings in which the new machine is shown by way of example.

In the drawings v Fig. 1 is a part elevation of the attaching station of the machine on an enlarged scale, some parts being shown in section, the attaching slide being shown raised far enoughto seat a hook upon the head of the band before the attaching operation proper;

' Fig. 2 a section on the line 2-2 of Fig. 1, some parts being omitted for the sake of clearness;

Fig. 3 an elevation similar to Fig. 1 with the v slide in a position corresponding to the end of the attaching operation;

Fig. 4 a schematic elevation of a. modification of the attaching device;

Fig. 5 a schematic elevation of a further modification of the attaching device;

Fig. 6 a partial section, on a smaller scale, on the line 6-6 of Fig. 3, the slide being shown in a lowered position during its return stroke, some parts being omitted;

Fig. '7 a schematic side elevation on a smaller scale, of part of Fig. 1;

Fig. 8 a schematic plan view of a modification of the bracing device for the bead of the band;

Fig. 9 a schematic side elevation of part of a supply channel guide or fall channel guide provided with a tip-over section for changing the position of the hooks relative to the sense oi the movement thereof;

Fig. 10 an elevation, similar to Fig. 9, of a modiilcation;

Fig. 11 an elevation of the device shown in Fig. 10 with another relative position of the parts;

Fig. 12 a schematic side elevation of the slide and of the lower part of the'supply channel of a further modification.

The main operative part of the machine is an attachment slide i'reciprocable in the sense of the arrow 2. A bridge 3 is'gulded by pins 4 in holes a of the slide. I

The slide i has a slot 6 for the Passa e of the band or tape 5 to which the hook or fastener element 8 is to be attached.

The band i is provided with a head In which is supported or braced on each side of the band by the teeth u or a toothed wheel I: rigidly securedtoan idler shaft l3.

On pivots ll ofthe slide l and in semicircular sockets 15 thereof are mounted two sectorshaped attachment jaws l6 swingable in a slot I1 (Fig. 2) between the front plate i8 and the rear plate IQ of the slide I.

The jaws IS, in the position of the slide I shown in Fig. 1, and in all lower positions form with their operative surfaces 20 a V-shaped receiver exactly conformed to the outer edge sur faces 2i of the legs orarms 22 of the still undeformed hook 8 to be attached to the bead II.

In Figs. 1 and 3 some small clearance is shown,

only for clearness of illustration, between the surfaces 20 and 2|, in fact, however, during all the fastening operation proper, they are in contact with each other, as indicated in Fig. 2, substantially throughout the length of the surfaces The inner parts of the plates 18 and 19 of the slide 1, in the form of flange 23 and 24, snugly overlap the front and back surfaces, i, e. the broadsides', of the legs or arms 22 of the hook 8. The flanges 23 are continued at 240 along the main part of the hook 8 so that the latter throughout its length, and particularly throughout the length of the legs 22, is held well confined between closely fitting overlapping rigid parts during the attaching operation proper. This. is articularly important in the beginning of the attaching deformation when the tendency to buckling and skewing of the hooks is the greatest.

When the slide I is in a position (not shown) lower than the position of Fig. 1, a hook or fastener element 8 is introduced into the wide slot 66 (Figs. 1-3) of the front plate it so that'said element lies on the back plate 09 immediately in front of the flanges 2&8, not yet centered exactly between them. if the slide is not inclined sufliciently to the horizontal to allow the element to slide down automatically between the flanges 24d said element is carried along irictionally by and travels with the slide towards the bead it, until Then, by the pressure of the advancing pins 4 against the surfaces 25 of the jaws I6, the latter are pressed against the faces 2i of the legs 22 of the element which thereby is now centered definitely upon the bead l0 and i pressed thereagainst with progressively increasing pressure until the legs "yield and are bent around the head It, as shown in Fig. 3 in which said legs are shown in their final position 22'. In this operation the legs.22 enter, intothe gaps 26 (Fig. 6) between the teeth of the wheels I2 I Rigidly secured to or integral with the back plate l8 of the slide i are two cams 21 which, when the slide, during its return stroke, is' lowered beyond the position 'shown in Fig. 1, strike against the upper part, i. e. the ends of the legs 22, of the last attached hook 8, as shown in Fig. 6, and thereby advance the band I, immovable transversally, with the hooks 8 already attachedthereto, by one step in the direction of the arrow 28. During this movement the hooks 8 on the bead l act as a toothed rack turning the idler wheel l2 one step. Thedownward stroke ofthe slide brings the wide slot 86 of the front plate l8 in line with the attached hooks for free passage of the last attached hook.

Fig. 7 shows diagrammatically the relative positions of the parts and, besides, shows an additional solid support 29 for the band at one side only.

In the modification shown in Fig. 4 the slide 38 and flange 3| substantially correspondto the slide I and flanges 240 of Fig. 1. Levers 32 pivoted at 33 to the slide 30 correspond to the jaws l6 and have flanges 34 overlapping the hook 8 tightly from both sides on the front and back surfaces. The links 340 form with the levers 32 a toggle-like structure and are pivoted at 35 to a reciprocatory driving member 36.

The effect of the modified structure is substantially like that of Fig. 1.

In the modification shown in Fig. the slide 31 with its flanges 38 again corresponds to the slide i and flanges 23 of; Fig. l. Surfaces 39 of the slide 31 again form a V-shaped receiver for the hook 8. The attaching pressure is exerted here by a pair of rollers 40 mounted in the slide 31.

The modification shown in plan view in Fig. 8 differs from the device of Fig. 7 only by using, for bracing the bead I0, two crown wheels 4| instead of the ordinary gear wheels i2.

In Fig. 9 the inclined slide 42 corresponds to the slide l.

The hooks 8 from any source of supply fall down throughthe channel guide or chute 43 with their legs 22 directed forwardly, i. e. downwardly. They have to be presented, however, to the slide 42 with their legs facing toward the band or rearwardly. Hence between the upper part 43 of the chute and its delivery part 44 is inserted an arched tip-over part 45 in which the books, after reaching the closed end of the part 43, fall through tilted intermediate positions 8' to the reversed final position 8" in which they are delivered to the slide 42.

In the modification shownin Figs. and 11 the tip-over channel guide 45 supplies the hooks directly to the slide 42. If the lowermost hook I does not tip over automatically it is tipped over positively when an arm 46 secured to the slide 42, upon leftward-downward movement of the slide from the position of the Fig. 10 to the charging position of Fig. 11, pushes the locking pin 41 into the channel guide 43. a known manner, supports the upper hooks in the channel guide 43 at the time of charging the lowermost hook into the slide.

In the modification shown in Fig. 12 the supply This pin 41, in

channel guide 48 and slide 49 correspond to the parts 44 and 42 of Fig. 9. The outlet 50 of the channel guide 48 is usually blocked by a tooth 5| pressed into the channel by a leaf spring 52.

When the slide 49 moves to the right a wedge 53 attached thereto acts upon the lower i. e. left end of the spring 52 and lifts the tooth 5| out of the channel 48 thereby allowing the lowermost fastener element in the channel to fall into the outlet 50 and upon the top surface 54 of the slide 48. When the slide returns to the left its receiver 55 comes beneath said element which, then, is pushed into said receiver by the tooth 5| under the pressure of the spring 52 released now by the cam 53.

I claim:

1. A machine for attaching Zipper hooks to their band by bending the arms of said hooks around a bead of said band, said machine comprising, in combination, means for bracing said bead from the side of the band opposite to the side to which the hook is to be attached, a slide, 1 a V-shaped receiver connected with said slide and conformed to and adapted to receive and support an open hook with its arms pointing to said side, members of said receiver, adapted, in

the beginning of said bending, to snugly overlap both broad sides of said arms over substantially the full length, of said arms, said members at least on one of these broad sides consisting of converging flanges, means for delivering a hook, broadside ahead, into a first position in front of but free of overlapping by said flanges, and

means for moving said slide to overlap said arms by said flanges, and to seat said hook upon said head by pressure exerted directly upon the arms of said hook, and to bend said arms around said bead by continuance of said pressure.

2. A machine as claimed in claim 1 in which the slide movable parallel to the plane of said band is provided with flanges for supporting, in said receiver, the open book to be attached, said flanges of said slide adapted to overlap said hook while in said receiver, two pressure jaws pivoted to said slide and conformed with their insides to the outsides of the legs of said hook,

sides to the outside of the-legs of said hook, and

a pair of links forming with said jaws a togglelike structure and pivoted to a driving member movable parallel to the plane of said band.

4. A machine as claimed in claim 1 in which a slide is provided for supporting, in said receiver, the open hook to be attached, said slide adapted to be moved parallel to the plane of said band, two rounded pressure members like rollers being mounted on said slide andbeing adapted, upon movement of said slide, first to put said hook firmly astride said band, and then to close the legs of said hook upon said band.

ALBERT siissKIND.

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