US2268799A - Sewing mechanism for stitching wire eye fasteners - Google Patents

Description

Jan. 6, 1942. A. M. BUTOW 2,268,799

SEWING MECHANISM FOR STITCHING WIRE EYE FASTENERS Filed July 14, 1939 4 Sheeis-Sheet l ABE MEYER BUTOW I NV EN TOR.

ATTORNEY.

Jan.'6, 1942. A. M. BUTOW 2,268,799

SEWING MECHANISM FOR STITGHING WIRE EYE FASTENERS Filed July 14, 1939 4 Sheets-Sheet 2 I NV EN TOR.

ATTORNEY.

ABE MEYER BUT OW Jan. 6, 1942. A. M. BUTOW 2,263,799

SEWING MECHANISM FOR STITCHING WIRE EYE FASTENERS Filed July 14, 1939 i 4 Sheets-Sheet 3 ABE MEYER BUTOW 66 INVENTOR.

ATTORNEY.

Jan. 6, 1942. A. M. BUTOW 2,253,799

SEWING MECHANISM FOR STITCHING WIRE EYE FASTENERS Filed July 14, 1939 4 Sheets-Sheet 4 NlllElllllf ABE ME-Y E R BUTOW INVEN TOR.

BY Z JL/Q ,v

Patented Jan. 6, 1942 UNITED SEWINGMECHA NISM FOR STITCHING WIRE EYE FASTENERS Abe Meyer Butow,

New York, N. Y., assignmto Artistic Foundations, Inc., New York, N. Y., a corporation of New York Application July 14, 1939, Serial No. 284,495

4 Claims.

In the application of ordinary sewing machines for sewing tapes having metallic fasteners there on, to a garment or to another piece of has been found that the sewing machine needle frequently strikes the metal fastener, resulting in breakage of the needle and frequent interruptions of the sewing operations.

This invention relates to improvements in sewing machines having a feeding cloth-presser in which the needle and the feeding cloth-presser are adapted to move in the line of feed of the sewing machine, and an object of this invention is to provide said sewing machine with means for stitching over fastener elements such as eye loops, the said means comprising tape guiding, and intermittently engaging means so that an eye bearing tape having eye fastener elements secured thereto may be attached by stitching to a portion of a garment without danger of breaking the needle.

Another object of this invention is to provide a mechanism for attaching an eye bearing tape by stitching, the said mechanism comprising engaging and feeding means reciprocated in the head of the sewing machine and being above and free of the base, thus providing a work supporting base which is free and clear, and permitting the placing and movement of a garment or piece of fabric in all directions, and the utilization of the entire surface area of the work supporting base.

In prior practice, av cam was used for raising and lowering an oscillatable stop device. Inasmuch as sewing machines used in this art run at the high speed of about 3,000 revolutions per minute, every time the oscillating stop device hits the high spot on the cam a loud noise results. These repeated loud noises and shocks all day long are a nerve-racking experience to the operator. feeding mechanism for stitching over fastener means which will operate in an absolutely noiseless manner and without being a disturbing infiuence to the entire operating force.

With the above and other objects in view, the invention will be hereinafter more particularly described, and the combination and arrangement of parts will be shown in the accompanying draw.- ings and pointed out in the claims which form part of this specification.

Reference will now be had to the drawings, wherein like numerals of reference designate corresponding parts throughout the several views, in which:

Figure 1 is a top plan view of my improved de- This invention comprises gripping and fabric, it

vice, showing the material to be operated upon in position.

Figure 2 is a front machine.

Figure 3 is chine adapted for stitching wire fastening eyes.

Figure 4 is a cross-sectional view, the section being taken as on line 4-4 in Figure 3, and showing a. garment having an extensive portion to one side of a strip of eye-bearing fabric lying flat and being freely movable on the work supporting base, the garment overlying the entire base up to the overhanging arm of the sewing machine.

Figure 5' is a side elevation'of the presserfoot shown in Figure 2, and showing an extension having angular teeth, each adapted for gripping an arm of an eye fastener for retaining same,v against backward displacement.

Figure 6 is a perspective view of a feeding cloth-presser having an auxiliary feeding extension for gripping and feeding fastener elements.

Figure 7 is a front view of the assembled feeding devices shown in Figure 6, and showing the presser-foot between the bifurcated front end of the feeding cloth-presser.

Figure 8 is a fragmentary top plan view of the sewing machine showing means for oscillating a rock-shaft which imparts alternate vertical movements to the feeding foot and to the presserfoo In the illustrated embodiment of the invention the numeral Ill indicates a sewing machine comprising a work supporting base ll. Mounted on the base II is an elongated gauge l2 having a bottom plate I! secured by screws M to the base. The gauge 12 has a substantially rectangular cross-section adapted for receiving and directing a strip of eye-bearing fabric l5 to the needle or end elevation of the sewing needles l6.

The sewing machine comprises a presser-foot I1 and means for reciprocating the presser-foot to bring the lower surface of the said foot in spaced relation above the entire area of the work supporting base II. The sewing machine also comprises a feeding foot l8 mounted for vertical and horizontal movements. The presser-foot I1 and the feeding foot l8 are mounted for alternate vertical movements to and from the base H by mechanism hereinafter disclosed. The feeding foot and the needles it are given vertical and horizontal movements so as to provide an upper four-motion feeding means which cooperates with the four-motion feed-dog l9 below the work supporting base I l.

The sewing machine l0 comprises the usual a front elevation of a sewing ma-' hollow standard and overhanging arm, terminating in a head 20.5-Jourri'alled in the sewing machinedis the main carries the crank disk 22. The crank disk 22 is providedwith a crank pin 23 connected by means of the link '24 with the lateral pin of the collar 25 clamped upon the needle bar 29 whereby reciprocatory movements in a vertical direction are imparted to said needle bar upon rotation of the main shaft 2|. The needle bar 29 is journalled for reciprocation in bearings provided in the vibratory frame 21 which is pivotally supported at its upper end upon a pin 28 fixed in the head 20, whereby the frame 21 is confined to swinging movements in a vertical plane transverse to the length of the main shaft 2 I. The vibratory frame 21 is guided in its movements at the lower end by an angularly shaped member 29 forming a guideway in which a portion of the said frame slidably moves to and fro.

In a suitable bearing formed at the rear end of the vibratory frame 21 isslidably mounted the feed-bar 30 having at its lower end the feeding cloth-presser I8. The presser-bar 3| is slidably mounted in the head 20 and carries the presser-foot I1 at its lower end.

A rock-shaft 32 has been mounted horizontally in bearings 33 and is actuated by means of an eccentric 99 (Figure 8) on the main shaft 2|.- Fixed to the forward end of the rock-shaft 32 is an arm 34 having a link 35 pivotally connected thereto at its lower end by a screw 39. The opposite end of the link 35 is pivotally connected by a pin 31 to an angular lever 38 which is pivotally mounted at its'fulcrum 39 to a collar 40 tilted to the presser-bar 3|. One end of the angular lever 38 is pivotally connected at 4| to a link 42. The link 42 is pivotally connected by a pin 43 to the feed-bar 30.

As shown by the arrows in Figure 2, when the rock-shaft 32 is given a partial rotation to the left, the arm 34 and link 35 move to' the left and move the upper portion of the angular lever actuating shaft 2|, which 38 to the left, thereby exerting a downward pressure on the pin 39, on the collar 40, and on the presser-foot- I 1. The to rearward or left hand motion (as viewed in Figure 2) of the link 35 causes raising motion of the pin 4|, the link 42, the feedbar 30 and the feeding foot I8 above the base II,

and simultaneous downward movement of the presser-foot I1. When the rock-shaft 32 is partially rotated to cause the link 35 to move forward, the linkage mechanism shown in Figure 2 causes the raising of the presser-foot I1 and the lowering of the feeding foot I3. It will thus be noted that the presser-foot I1 and the feeding foot I8 are mounted for alternate'vertical movements.

It is to be understood that the presser-foot I1 and the feeding foot I8 are successively raised above the base II a distance sufllcient to permit the insertion between the base and lower surface of one of said feet of a garment and a superposed strip of eye-bearing fabric, so as to permit free and clear feeding movements of the garment and a superposed strip of eye-bearing fabric on the base. 1

As shown in Figure 5, the presser-foot I1 has an integral extension 44. Theextension 44 has an aperture 45 horizontally disposed for receiving a headed cylindrical member 49 having a threaded end portion 41 and a nut 48 thereon. The

headed end 49 has an aperture 49 therethrough for receiving the cylindrical end portion of an extension 59 facing forwardly. The underside of and having a vertical wall 92.

. the extension 58 has teeth 5|. 9|

angularly shaped metal plate 55 having two elongated through apertures 59. One side of the feeding foot I8 has been cut away to receive the metal plate 55. Threaded holes 51 have been provided in the member I8 and in alignment with the apertures. 59 in the metal plate 55. Screws 58 serve for securing the metal plate 55 to the member I8. The lower portion of the metal plate 55 has teeth 9| in its underside, each of the said teeth being in the form of an acute angle I The teeth 9| of the metal plate 55 are similar but larger than the teeth 93 in the feeding foot I3. Each tooth 9| serves for gripping a wire arm 94 of an eye fastener 53 from opposite sides, the vertical wall 62 providing a positive feeding movement of the eye fastener while preventing backward displacement by the operator, of the material being sewn.

The teeth in the metal plate form'a feed-dog or elongated feeding extension which feeds the eye-bearing strip concomitantly with the feeding of a superposed garment panel and an eye-bearing strip by the teeth in the feeding cloth-presser IS.

The additional top feeds, i, e., the teeth 93 on the feeding foot I8 and the teeth 9| on the lower portion 90 of the feeding device 54 herein disclosed, provide added feeding means to the usual lower feed-dog I9 which make it possible to operate on rubber fabrics, without stretching the material.

As shown in Figure 1, the right side of the feeding foot I8 has been made triangular. This permits the forward portion of the extension 58 to .be angularly directed with respect to the direction of feed and brought to the inclined side of the feeding foot.

Inasmuch as the width of a presser-foot must be wide enough to cover the feed-dog surface, the full width of the angular portion of the presser-foot is retained, to utilize the full width of the feeding action of the feed-dog. The shape of the angular portion of the feeding foot I8 is thus determined at its rear end by the width of the feed-dog I9 and at the front end by the practical minimum of the metal. to prevent breakage of the member I8 at the needle hole.

In prior practice for stitching eye-bearing fabric, mechanism was employed which was supported on the base by a bracket. This bracket is in the way of the fabric worked upon and limits the width of certain garments that neylaeqalaced on the work supporting base of the sewing machine. The mechanism herein disclosed permits of the garment material 99 worked upon being moved freely up to the overhanging head of the sewing machine. The gauge I2 guides the eyebearing strip I5 and the folder 95 guides the folded garment material 99 without any hindrance from a large width side extension 91 of the garment material which, as shown in Figure 3, can extend all the way up to the overhanging head of the-sewing machine, thus utilizing the entire area of the work supporting base It is to be noted that the folder 95 is supported by the base II of the sewing machine by means of an integral folder extension 15 having holesthrough which bolts It pass into threaded engagement with the base.

For the purpose of timing the feeding movements of the strip of eye-bearing fabric, the means for adjusting the feeding movements of the feeding foot I. and its eye-en ag feeding extension 54 comprises an adjustable eccentric Ill, mounted on the main shaft 2|. The eccentric Ill is adjustable in any well known manner upon the main shaft2l to vary the throw of a pitman 12, Figure 3, governing the movements of the feeding devices. A variable throw eccentric which is adjustable about a main shaft of a sewing machine is shown in Patent No. 1,685,436. The relative timing between the feeding foot and a 4-motion feed-dog is shown in Patent No. 1,128,519.

As best shown in Figure 8, the rock-shaft 32 has been journaled in the bearings 33 at the rear of the machine Ill. The rock-shaft "is parallel with the main shaft 2i. Secured to one end of the rock-shaft 32 is a crank arm II, which is pivotally connected with one end of a pitman 18, of which the opposite end has a strap embracing an eccentric 59, suitably secured upon the main shaft 2|.

It is to be noted that in prior practice wherein eye-fasteners are displaced out of the path of the needle descent there is a tendency to produce an undesired rufliing efiect upon the goods being sewn, with resultant bulges, wrinkles and like defects of appearance in the finished work. The mechanism herein disclosed functions to grip and feed. The gripping of the wire arm of the eye fastener by the feedin teeth provides engagement with both sides of the wire and prevents ruining, wrinkling, bulging and like defects in the finished work.

It is also to be noted that the teeth ii in the feeding extension 54 are coarser than the fine teeth 63 in the feeding foot 18. The teeth ii are large enough to permit entrance between them of the wire 64 of which the eye fasteners 53 are made, and for practical purposes are about two times the length of the teeth 63.

It is also to be noted that the spacing of the stitches Ii is determined by adjusting the eccentrlc 10 to time the movements of the feeding devices l8, l9 and 54, of the sewing machine, so as to be in proportion to the spacing of the arms of the eye fasteners 53, and thus prevent contact of the needles IS with the wire arms of the eye fasteners, the feeding movements being predetermind to cause stitches to be formed on either side of the wire a In operation, it will be noted that the mechanism herewith disclosed operates in a simple manner. Contact between the needles of the sewing machine and the eyes of the eye-bearing fabric is avoided, thereby obviatingthe danger of breaking the needles or dama the fasteners carried by the eye-bearing fabric which is being stitched to a garment. Due to the fact that the line of stitching which attaches the eye-bearing fabric to the garment passes through the loops or other portions of the fastening element the fastening members are securely attached to the eye-bearing fabric and the eyebearlng fabric itself to the garment.

In accordance with the patent statutes I have described and illustrated the preferred embodiment of my invention, but it will be understood that various changes and modifications can be made therein without departing of the invention as defined by the append I claim: a

1. In a sewing machine of the classdescribed for attaching a tape carrying eye fastener elements to a garment, comprising needles havin vertical and horizontal movements and a feeding foot having a bifurcated front end portion and needle holes therein, and a presser-foot having from the spirit a front extension mounted for motion inside said bifurcation; the improvement comprising an extension mounted in the rear of said presser-foot and extending forwardly at one side thereof, said sideways extension having angularly shaped teeth. said feeding foot adjoining said sideways extension being angularly positioned with respect to the direction of feed to permit the toothed portion of said sideways extension to closely approach one of said needle holes. said teeth being positioned so as to grip and retain one of said eyes against undesired displacement into the path of the descending needles, a gauge for guiding a strip of eye-bearing fabric to said needles and a cloth folder positioned in superposed relation over said gauge and being adapted for folding and directing a garment panel to said needles.

2. In a sewing machine of the class described for attaching a tape carrying eye fastener ele- I ments to a garment, comprising needles having vertical and horizontal movements and a feeding foot having a bifurcated front end portion and needle holes therein, and a presser-foothaving a front extension mounted for motion inside said bifurcation; the improvement comprising an extension mounted in the rear of said presserfoot and extending forwardly at one side thereof, said sideways extension having angularly shaped teeth, said feeding foot adjoining said sideways extension being angularly positioned with respect to the direction of feed to permit the toothed portion of said sideways extension to closely approach one of said needle holes, said teeth being positioned so as to grip and retain one of said eyes against undesired displacement into the path of the descending needles.

3. In a sewing machine of the class described for attaching a tape carrying wire eye fastener elements to a garment, comprising a feeding foot and needles having vertical and horizontal movements, said feeding foot having a bifurcated front end portion and needle holes therein, a presser-foot having a front extension'mounted for motion inside said bifurcation, and a lower feed-dog and means for timing said upper feeding foot and said lower feed dog; the improvement comprising an extension plvotally mounted in the rear of said presser-foot and extending forwardly at one side thereof, said sideways extension having angularly shaped teeth, said feeding foot adjoining said sideways extension being angularly positioned with respect to the direction of feed to permit the toothed portion of said sideways extension to closely approach one of said needle holes, said teeth b'eing positioned so as to grip and retain one of said eyes against undesired displacement into the path of the descending needles.

4. In a sewing machine of the class described for attaching a tape carryin wire eye fastener elements to a garment panel, comprising a work supporting base, a feeding foot and needles hav- 1 ing vertical and horizontal movements, said feeding foot having a bifurcated front end portion and needle holes therein, a vertically actuated presser-1oot having a front extension mounted for motion inside said bifurcation, and a lower feed-dog and means for timing said upper feeding foot and said lower feed dog; the improvement comprising an extension mounted in the rear of said presser-i'oot and extending forwardly at one side thereof, said sideways extension having angularly shaped teeth, said feeding toot adjoining said sideways extension being angularly positioned with respect to the direction of feed to permit the toothed portion oi said sideways extension to closely approach one 01' said needle holes, said teeth being positioned so as to grip and retain one of said eyes against undesired displacement into the path or the descending needles, a gauge for guiding a strip of eye-bearing 'i'abric'to said needles, a cloth folder positioned in superposed relation over said gauge and being adapted for folding and directing a garment panel to said needles, said gripping and retaining extension being vertically reciprocated relative to said work supporting base and being entirely free of said base to permit movement of said garment panel all over the area of said base.

' ABE MEYER BUTOW.

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