US1342775A - Work-guide for sewing-machines - Google Patents

Description

F. T. STROBEC'K.

WORK GUIDE FOR SEWING MACHIN ES. APPLICATION FILED JUNE 6,1918.

1,342,775, Patented June 8, 1920. Z SHEETS-SHEET I- Q in? INVENTOR WITNESSES CNW W J m 7. m

ATTORNEY F. T. STRUBECK. WORK GUIDE FOR SEWING MACHINES. APPLICATION FILED JUNE 6,1918.

Patented June 8, 1920.

2 SHEETSSHEET 2.

INVENTOR WITNESSES UNITED STATES PATENT OFFICE.

,FRAZNS T. STRbBECK, OF IBEACHMONT, MASSACHUSETTS, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OFv NEW JERSEY.

WORK-GUIDE FOR SEWING-MACHINES.

To all whom it mag concern:

Be it known that I, Frans T. S'rnonnon, a subject of the King of Sweden, residing at Beachniont, in the county of Suffolk and State of Massachusetts, have invented certain. new and useful Improvements in ork- Guides for Sewing-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to work-guides for sewing machines and has for a primary object to provide a device for vcontrolling a strip of fur-material, either natural or artificial, as it is presented to the needle of a sewing machine, so that the'fur or pile-fibers will be deflected or bent over to one side during their approach to'the needle, whereby the stitches will be laid across the bent over baseportions of the pile-fibers along, an edge of the fur-strip.

A further object of the invention is to provide a fur-guiding attachment which may be placed in advance of the'presser-foot of an ordinary sewing machine to bend or deflect the, fur to one side so that the pile-fibers along an edge of the fur-strip will be bent over transversely of the line of seam-formation and delivered to the presser-foot in such bent over condition.

Vith the above and other objects in view, as will hereinafter appear, the invention has been embodied in a machine having areciprocating needle and a rotary looperoperating to enchain the needle-loops with one another to form readily raveling stitches. The machine is preferable equipped with a presser-foot feeding mechanism including a four-motion feed-dog, and a fiat work-sup port; the latter carrying an edge-guide including an overhanging lip for controlling the edge of the fur-st fp farthest away from the stitchingline. f

Operating in conjunction with the foregoing devices is a furguide for deflecting the fur orpile-fibers to one 'side or toward the edge-guide above referred to. The furguide' may comprise a sheet-metal strip disposed in advance of the presser-foot and curved widthwise to catch the pile-fibers at the edge of the fur-strip adjacent the'stitching line and gradually bend them over transversely'of the line of feedlas they are drawn toward the presser-foot, whereby when they reach the upwardl and forwardly curved toes of-the presseroot, they will pass under Specification of Letters Patent.

Patented June 8, 1920.

Application filed June 6, 1918. Serial No. 238,553.

the latter in'a transversely bent condition. The lower edge of the fur-guide is held spaced slightly above the work-supporting plate to allow the marginal portion of the backing strip which supports the pile-fibers to pass under it. This edge of the fur-guide extends in the direction of feed but is disposed at the side of the line of seam-format on opposite that at which the edge-guide hes and acts upon the base-portions of the pile-fibers to keep the opposite edge of the fur-strip in contact with the edge-guide.

When the bent over pile-fibers reach the stitching point, they will lie across the line of seam-formation and will be basted down to the backing strip in bent over condition. The presser-foot is formed in its under face with a vertical guiding wall forming substantially a continuation of the lower edge of the curved fur-guiding plate.

- The fur-basting operation above indicated is particularly useful in carrying out a novel process of attaching fur-material to the tops of house-slippers, which process forms the subject matter of my copending application Serial No. 238,554, filed herewith, and is hereinafter briefly described. The present invention, however, is of general utility in stitching along the edge of fur-material or pile-fabric wherein it may be desirable .to

baste down the pile-fibers so that they will lie transversely of both the needle-path and the line of seam-formation preliminary to further stitching operations upon the basted furstrip.

, In the accompanying drawings, Figure 1 is a front elevation of a sewing machine embodying the invention. Fig. 2 is a plan view of the cloth-plate of the machine. Fig. 3 is a cross-section along the line 3--3, Fig. 2, with a strip of fur-material in position. Fig. 4c is a perspective view of the presserfoot. Fig. 5 is a cross-section of the presserfoot and throat-plate on the line 5-5, Fig.

2 with the work in position. Fig. 6 is a side elevation of the parts shown in Fig. 2. Figs. 7 to 11, inclusive, illustrate a method of attachingfur-material to the top ed e of a felt slipper, the carrying into effect 0? which method the present invention is designed to facilitate In the preferred embodiment of the invention, as illustrated, the machine frame comprises the base 1 supportin the raised bed 2 from which rises the stan ard 3 carry- 8; the latter operating in conjunction with a spring-pressed presser-foot 9 the upwardly above the cloth-plate 6' to curved forward extremity of which is bifurcated to form toes l0 and 11. The longitudinal half of the presser-foot sole-portion including the toe 10 is thickenedas by means of a plate 12 secured to the under surface of the presser-foot, to form a work-engaging surface 13 disposed below the level of the work-engaging surface 14 of the other longitudinalhalf of the presser-foot which includes the toe;11.: The work- engaging surfaces 13 and 14 of the presser foot are therefore stepped in;arrangement and at their juncture a vertical guide-wall 15 is formed extending lengthwise of the presser-foot.

As thep'resent mechanism is intended for a basting operation, the machine is provided with a looper 7 'of the rotary type which cooperates with the needle 7 in'the usual manner to form readily raveling stitches. .i Y Adjustably secured to the cloth-plate 6 by thumb-screws 16 is the edge-guide 17 having an edge-guiding wall 18 parallel to the line'of seam-formation and an overhanging lip 19 designed to keep the edge of the work from riding or curving above or over the wall 18. In basting fur strips, such as shown at a, Fig. 3, preparatory to attaching them to the tops of slippers, the guide 17 .is' adjusted so that the distance between the free edge of the lip 19 and the guide-wall 15 of the presser-foot is approximately equal to the width of the pile-forming portion 2 of the fur-strip; it being noticed that the pilesupporting'base 7) of the fur-strip is somewhat wider than the fur portion a. To bend the fur away from the needle 7 or toward the edge-guide 17 so that the fur maybe bent transversely of the line of seamformation and may pass under the toes 11 0f the presser-foot, a fur-deflectmg guide 20 is employed. The guide-20 may consist of a stripof sheet-material curved widthwise and supported by an arched bracket 21 screwed to. the guide 17. The strip 20 has ailower edge-22 which is straight along the major portion'of its length and is spaced slightly for the passage of the, base I) of the fur strip, F 1g. 3. 1 Throughout the maj or portion of its length the'lower edge 5220f the fur-guide 20 extends substantially in the direction of feed butv is ,disposed ajshort' distance to one side of the vertical plane defined by the' needlepath 'and the line of seam-formation, in order that the line of stitches may be formed within;;the;-pile supporting portion of the backing strip andbinddown the base-portion of the pile-fibers along the edge of the fur-strip. The rearwardlydisposed end of the fur-guide 20 is curved over somewhat more sharply thanthe forward end and ter- 7 over: condition to the presser foot which holds them .in flattened condition, Fig. 5,

while the needle forms a row of chain stitches .0 serving to bindidown the pilefiber's in bent over condition. The fur-strip is then reversed and the opposite. edgetbasted inna similarananner; the basted fur-strip having the pile-fibers a crowded toward the center-as shown in Fig. 8a

Y Onee'dge of;tl1e backing strip 6 of the furmat'erial is next attached by a line of fasteningstitches d to the edge of a body-fabric e which. may constitute the top of a felt slipper. 7 This operation may be performed on an ordinary sewingmachine since the bent back pile-fibers are held out of the way of the reciproc'ating'needle of the machine and do not interfere with theassembling of the edge of the backing strip '7) upon the edge of the body-fabric 6 with the pile-fibers a between the plies b andpe and in contactwith the outer 'or right? side of the body-fabric e, Fig. 9 i After the stitches cl have been formed, the backing strip 6 of the fur-material is folded about the stitches cZ andthe edge ofthe bodyfabric 6 into the position shown ,in Fig. 10, in which position a line i of. fastening stitches f passing; through the backing strip 1) and body-fabric 6 may be'readily formed by an ordinary sewing machine, the pilefibers being still held bythe basting stitches out of the way-of the sewing needle. Upon thereafter "raveling or pulling out the basting stitches ,0, the fur expands into the rolllikeuform, shown in cross-section, Fig. 11, and provides the :desired finish at the top edge of the body-fabric or the-upperedge of the slipper, ffectively,'zconcealirigfthe backin strip and all stitching.

Having thus set forth the .nature of the invention, what I claim, herein is" ,1. In asewing machine for basting pilefabric, the; combination with sewing mechanism fori formingqa linefof through-andthrough stitches, and a p'resser-foot, of a fur-bending guide located' mainly in advance of thepresser-foot androperati ng to bend over the. pile-fibers along an edge of the fabric and guide them into contact-relation with the under surface of the presserfoot, said fur-bending guide being so positioned laterally with relation to the stitching line that the stitches formed will bind down the bent over base-portions of the pilefibers while leaving the remaining portions of the pile-fibers unconfined.

2. In a sewing machine, in combination,

a frame including a work-support, stitchforming mechanism including a reciprocating needle and 'complemental loop-taking mechanism supported at opposite sides of said work-support, four-motion feeding mechanism including a feed-dog operating through an aperture in the work-support, a presser-foot opposed to said feed-dog, edgeguiding means disposed at one side of the line of seam-formation for guiding a strip of fur-material to the needle, and a fur bending guide disposed alongside and acting in opposition to said edge-guide to bend the fur transversely of the direction of feed and guide it under said presser-foot.

3. In a sewing machine, in combination, a frame including a work-support, stitchforming mechanism including a reciprocating needle and complemental loop-taking mechanism supported at opposite sides of said work-support, four-motion feeding mechanism including a feed-clog operating through an aperture in the work-support, a resser-foot opposed to said feed-dog, edgeguiding means disposed at one side of the line of seam-formation for guiding a strip of fur-material to the needle, and a furguide in advance of the presser-foot and spaced from said work-support for bending the fur transversely of the direction of feed and guiding it under the presser-foot.

4. In a sewing machine, the combination with a reciprocating needle and a presserfoot, of an edge-guide located at one side of the line of seam-formation, and a fur-guide having a surface-portion at the opposite side of the line of seam-formation for guiding the base-portions of the pile-fibers at one edge of the fur-strip, said fur-guide having additional surface-portions for bending the fur toward said edge-guide and delivering it to the presser-foot in bent over condition, whereby the stitches will be formed across the bent over base-portions of the pile fibers along the edge of the fur-strip.

5. In a sewing machine, in combination, areciprocating needle, feeding mechanism, a presser-foot having a stepped work-engaging surface including a vertical guiding wall extending in the direction of feed, an edge-guide opposed to said guiding wall and forming therewith a guiding channel for reception of a strip of fur-material, and a fur-guide for bending the pile-fibers laterally of the line of seam-formation and delivering them to the presser-foot in bent over condition across the line of seam-formation.

6. lVork-guiding mechanism for sewing machines comprising, a work-supporting plate, an edge-guide mounted on said worksupporting plate, and an elongated furguiding plate disposed in advance of the presser-foot and having its lower edge spaced slightly. above said work supporting plate, said fur-guiding plate being curved widthwise to bend the pile-fibers of a strip of fur-material laterally of and across the line of seam-formation,

7. lVork-guiding means for sewing machines comprising, a work-supporting plate, an edge-guide mounted on said work-supporting plate, and a fur bending guide having a concaved surface opposed to said edgeguide, as and for the purpose specified.

8. In a sewing machine, the combination with stitch-forming mechanism including a reciprocating needle and a presser-foot, of an edge-guide having a guiding portion disposed in advance of said needle, and a fur bending guide disposed mainly in advance of said presser-foot and having a curved side-wall extending alongside of and cooperating with said edge-guide.

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

FRAN S T. STROBEOK.

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