US1812830A - Binder for sewing machines - Google Patents

Description

.lune 30, 1931. T. oNElLL BINDER FOR SEWING MACHINES 'Filed March l5, 1929 2 Sheets-Sheet l 51m/oem@ Y/o/fzas @Mill dtfm mag June 30, 1931. T. oNElLL BINDR FOR SEWING MACHINES Filed March l5, 1929 2 Sheets-Sheet 2 Patented June 30, 1931 UNITED srA'LEis PATENT orFlCs y THOMAS ONEILL, 0F IBROOKLYN, NEI/V YORK, ASSIGNOR T0 THE SINGER MANUFAC- 'TUBING' COMPANY, OTE ELIZABETH, NEVI JERSEY, A CORPORATION OF NEW JERSEY BINDER FOR- SEWING- MACHINES Application filed March 15, 1929.

posed ycrosswise of the line of seam forma-A vr5 tion and are provided with spaced delivery Cil lips oblique to the Ybinder length.

f Binders of this type are employed to apply a'binding-strip upon a body material margin passed between the delivery lips of the binder Vin a direction substantially transverse to the direction of passage of a binding strip through the binder. As the delivery end o-f the binder is of course disposed in advance of the needle-path, it has heretofore been difficult to satisfactorily secure the binding-.strip when applying it' to work margins having reentrant-angles. This dificulty increases With the width of the binding employed, because the lfront side of the inner fold-forming or binding doubling rib of the binder is necessarily spaced increasingly farther from the needle with increases inthe width of the binding and it is this folding rib which is engaged by the unbound side of the work-angle and therefore interferes with thefeeding of the work to veffect stitching thereof to substantially the vertex of the angle. Consequently, in turning the work to bind an internal corner thereof, the needle is liable to entirely miss the body material and the binding'bridges the corner instead of being snugly fitted there into.v n i VThe present invention aims to. overcome the described diiiiculty and to provide means permittingbinding-strips to be snugly applied to the corners of reentrant-angles and scalloped work-margins, with the stitching securely'anchored in the body material.

' In a preferredembodiment of the invention which is more particularly adapted for binding comparatively stiff body materials such as leathers' or imitation leathers, the fold-forming rib of the binder employed for doubling the binding-strip longitudinally is provided with a. recess extending lengthwise of 'said ribv and terminating in the de- Y livery end of the binder.

YThis construction permits the unbound side of the work-angle to enter the rib-recess Serial No. 347,295.

to a point substantially abreast of the needle, whereupon the work may be turned about a point-contact edge-guide at the rear side of the binder. The entering of the body material into the rib-recess necessarily indents the binding-strip and to assist in taking up this indentation after the turning of the Work, there is provided a spring tongue of which the free end extends through the mouth of the rib-recess and may yield, under the pressure of the unbound side of the work-angle during the feeding of the work, to complete the stitching toa point substantially abreast of the work corner. The indenting of the binding-strip draws in the edges thereof and has the effect of taking up slack in the binding formed by turning the work and therefore the edges of the binding are nicely rounded at the corner, while its middle portion is snugly fitted into the corner. The rearwardly yielding movement of the spring tongue is limited by a suitable stop-member at therear side of the binder, which stopmeniber functions as an edge-guide for the body material during the binding of straight runs thereof. The spring tongue preferably extends beyond the guiding edge of said stop-member, whereby the free end of said tongue may function as a guide for the work when turning the same to stitch a corner.

In the accompanying drawings, Fig. l is a front side elevation of the improved binder and of a portion of a sewing machineto which it has been applied. Fig. 2 is a rear side elevation of the binder. Fig. 3 is a vertical section substantially on the line 3 3 of Fig. 2. Fig. 4 is a top plan view of a portion of the sewing machine cloth-plate and attached binder. Fig. 5 is a horizontal section substantially on the line 5 5 of Fig. 2.l Fig. 6 shows a portion of bound reentrant-angle work and in dotted lin-es the delivery end of the binder to illustrate the position of the spring tongue linst before the corner is turned.

Referring to the drawings, the present improvement is shown as embodied in a sewing machine having a cloth-plate l and an overhanging bracket-arm terminating in a head 2, l Suitably secured upon the clothi l plate isa throat-plate 3 which is slotted to receive a feeddog 4 of the lower four-Inotion type and 1s apertured to permit reciprocation therethrough of a needle 5. vThe y needle 5 is carried by a needle-bar 6 journaled for endwise reciprocation in a vibratory frame 7 supported bythe head 2 in a manner (not shown) to provide for workfeedingmovements of the needle,-i. e., lateralk i y movements of the needle in the Vdirection of and with the work-advancing movements of the feed-dog 4.

Opposed to the feed-dog 4 is a presser-foot 8 carried by a presser-bar 9, and a feedingy foot 10 carried by a .feed-bar 11, the presser- 15 known in this kart' is believed to require no .further description.

Hingedly secured upon the cloth-plate 1, by means of a pivot-screw 12,V is a swing-out binder-supporting plate 13 Vprovidedon its under side with a pin 14 adapted to enter a suitable aperture in the cloth-plate to properly locate said supporting-plate in theoperative position of the binder carried -thereby.v The supporting-plate 13 isy slotted at 15 to provide a depressed wing 16 positioned in the clearance recess 17 form-ed in the clothplate 1 for retraction of the usual slideplate 18.

Secured upon the*supporting-plate wing 16 by screws, as 19 for adjustment crosswise vof the line of seam formation is the shank 2O of `an arm 21 sustaining a binder 22 of the longitudinally.

stripreversing type. In the present instance, the binder 22 is made'ofsheet metal' bent to provide an inner fold-forming ribv 23 which functions to. double .a binding-strip The upper'slde member-ofthe rib 23 ter.-

minatesinA a reversely bent flange 24 lcon-` stituting in edect ascroll forturning in the upper Vedge of the binding, said lian-ge l-24 1 beingin the present instance soldered to the under side of the supporting arm 2li The lower side member Yof the rib 23 also ter- `Ininates in a flange 25 to provide. a guiding passage lfor the lower edge of the bindingstrip, said lower edge of the binding-'strip beingin the present case not inturned, as will be observed from an Vinspection of Fig. 6. As the rpresent binder is designed more particularly for heavy work, it is preferred to employ further Vsupporting -means therefor.

' To this end, the lower flange 25 is soldered to an arm .26 adjustably .secured Vby screws, as 27, upon the supporting-plate wing 16.

The receiving end 28 of the binder is vertically disposed and is substantially flat, the binder-flanges 24 and 25 converging from livery n end. This delivery Vend comprises spaced lips 29 and 30 partly cut away to provide strip-reversing edges, as f 31 and 32, oblique to the length of the binder, i. e., inclinedto the direction jof passage of abinding-strip through the binder and also inclined to the line of seam formation. The

.binder is,'as usual, disposed crosswise of the line of seam formation, it being Vpreferred to position Ythe binder so that it is slightly inclined tothe line of feed, withrthe Vbinder delivery end in advance of its receivingend.

The supporting-plate 13 is suitably cut away to permit positioning of the lower side the cloth-plate. To better ldirect the. body material tojbe bound between the lips 29, the supporting-plate 13 is provided with'a raised portion ,33 in advance of said lips.

v In order that the unbound. side of reentrant-angle work may be advanced by the feeding mechanism Yofthe machine suliciently far` to stitch to a point substantially abreast of the corner ofthe work, the binding-strip doubling rib'23 is provided lengthwise thereof with a recess 34 inthe front face of said-rib and terminating inthe deliver7 end of the binder Abetween the lips 29 and 30 thereof. This recess is entered by the unbound side of the work angle, which causes the binding-strip to be indented under the.

action of the feeding mechanism. VBy positioning the binder at an angle tothe line of feed as described, it is evidently unnecessary to continue the recess 34 the entire length of the binder. y

rojecting into said recess .3 4 is a spring tongue 35, which in the presentcase lis soldered to the rearV side of the binder at the work receiving en d thereof. This .tongue 3,5 is free toyield to the passage of the work and tol-an extentlimited! by a stop-member Y 36 bridgingtheupper and vlowermeinbers ofthe rib 23 at'the rear sideof 'the binder. `The edge 37 of the stop-member constitutes an edge-guide for the binding-strip and body material in straight runs thereof and as the free end of the tongue Ywhen pressed into Vcontact with the member 36 extends slightly beyond the edge 37,. the work may be swung about the point-contact afforded by the lfree `end of the tongue .when turning thecorner of the work. After the work is turned, the tongue returns to its former position where- Vsaid receiving end 28 toward the binder de.-

Aof the binder substantially in the plane of .Y

in-it projects slightly thro'ugh-therecess 34 .and in doing so, it takes up the indent-ation produced in the binding-strip. by the Y entrance of the body material into said recess.

This indentation of the'binding-strip causes some retraction of the yedges of said strip and .in thus taking Vup the fullness thereof, the

vbinding may be smoothly applied tothe corner.

lVhile the sheet metal type of strip-reversing binder has been herein described in general terms, it is to be understood that the invention is equally applicable to other types of strip-reversing binders having a solid block for doubling the binding-strip longitudinally. The essential feature of the invention is the provision of means, in a stripreversing binder, to permit feeding of the body material having reentrant-angles, or infact scallops, to a. point wherein the binding may be satisfactorily secured to internal angles and curved work.

In Fig. 6 of the drawings is illustrated a fragment of work in which a body material M, having a reentrant-angle, is bound by a binding-strip B doubled longitudinally to embrace the edge of the body material, the upper portion of the binding-strip having` its free edge inturned. The binding is secured by stitches S and it will be observed, by the illustration in dotted lines of the present l binder deliverv end, that the side A of the work-angle may be advanced in t-he direction of feed, indicated by the arrow, to lay the bindinfv snugly into the corner of the workangle.

Having thus set forth the nature of the invention, what I claim herein is 1. A strip-reversing binder having an oblique delivery end and an inner fold-forming rib about which a binding-strip is doubled longitudinally, said rib being provided lengthwise of the binder with a recess in its front face terminating in the delivery end of the binder.

2. A strip-reversing binder having an oblique delivery end, an inner fold-forming rib for doubling a binding-strip longitudinally, said rib being provided lengthwise of the binder with a recess in its front face terminating in the delivery end of the binder, and a yielding tongue disposed in said recess.

3. A strip-reversing binder having spaced delivery lips oblique to the binder length, a body material edge-guide between said lips disposedvat substantially the rear side of the binder, and an inner fold-forming rib about which a binding-strip is doubled longitudinally, said rib being provided lengthwise of the binder with a recess in its front face terminating in the delivery end of the binder.

4. A strip-reversing binder having spaced delivery lips oblique to the binder length, a body material edge-guide between said lips disposed at substantially the rear side ofthe binder, an inner fold-forming rib for doubling a binding-strip longitudinally, said rib being provided lengthwise of the binder with a recess in itsfront face terminating in the delivery endof the binder, and a yielding tongue disposed in said recess.

5. In a sewing machine having a reciprocatory needle and work-feeding mechanism, a binder disposed crosswise of the line of seam formation having spaced delivery lips inclined to the binder length and an inner foldforming rib about which the binding-strip is doubled longitudinally, said rib being provided lengthwise of the binder with a recess in its front face terminating in the delivery end of the binder, and a body material edgeguide at the rear side of said binder substantially abreast of the needle, said recess providing an open passageway from the front side of the binder to said edge-guide.

G. In a sewing machine having a reciprocatory needle, work-feeding mechanism, a strip-reversing binder disposed crosswise of the line of seam formation to incline forwardly from its receiving toward its delivery end in advance of the path of the needle, said binder having an inner fold-forming rib about which a binding-stripv is doubled longitudinally, and said rib being provided longitudinally thereof with a recess in its front face terminating in the delivery end of the binder.

7. A strip-reversing binder having spaced delivery lips oblique to the binder length, an inner fold-forming rib provided longitudinally thereof with a recess in its front face terminating in the delivery end of the binder, a yielding tongue projecting into said recess, and a stop-member positioned to limit the rearward movement of said tongue.

8. In a sewing machine having a reciprocatory needle, work-feeding mechanism, a binder disposed crosswise of the line of seam formation having spaced delivery lips oblique to the binder length and having an inner foldforming rib about which a binding-strip is doubled, said rib being provided longitudinally thereof in its front face with a recess terminating in the delivery end of the binder, and a work-support for directing a body ma.- terial in the plane of said recess.

In testimony whereof, I have signed my name to this specification.

THOMAS ONEILL.

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