US1335468A - Sewing-machine attachment - Google Patents

Description

A. TRICOMI.

SEWING MACHINE ATTACHMENT.

APPLICATION FILED AUG-31, I918.

A. TRICOMI.

SEWING MACHINE ATTACHMENT. I APPLICAHON FILED AUG-3h 1918. Lfifi fifi, Patented a 30,1920' 2 s ns snazr 2. 4

BY fla /1/ ATTORNEY puree erase rare ri.

AGATINO TBIGOMI, 8F NEW YORK, N. Y.

SEWING-1VIACHINE ATTACHMENT.

lessees.

To all whom it may concern:

Be it known that I, Aoxrmo TRICOMI, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Sewing- Machine Attachments, of which the follow ing is a specification.

This invention has relation to sewing ma chine attachments, and the nature and objects thereof will be readily apparent to those skilled in the art to which it appertains, in the light of the following description of the accompanying drawings, illustrating what I now believe to be the preferred embodiment or mechanical expression of my invention, from among other forms and arrangements within the spirit thereof and the scope of the appended claims.

An object of the invention is to provide a device for attachment to the presser foot of a sewing machine whereby to operatively support various devices for performing stitching and gathering and other operations on fabric in a manner which will be presently obvious.

Another object of the invention is to provide in an attachment of the character above set forth, a novel means for releasably securing the various devices in place.

A still further object is to provide a plurality of devices for gathering, guiding the fabric, and for folding and stitching cord, soutache and braid, as well as devices for other purposes, all including means for association with my attachment.

In addition to the foregoing this invention comprehends improvements in the details of construction and arrangement of parts to be hereinafter fully described and specifically set forth in the appended claims.

In the accompanying drawings, in which similar and corresponding parts are designated by the same characters of reference throughout the several views in which they appear:

Figure 1 is a view in perspective of an attachment to a presser foot, constructed in accordance with my invention.

Fig. 2 is a view of the attachment in longitudinal section with my gathering device in place.

Fig. 3 is a view of the gathering device per 86 in perspective.

Specification of Letters Patent. Patented B1 36 192(} Application filed August 31, 1918.

Serial No. 252,185.

Fig. 4: is a view in perspective of a fabric guiding device.

Fig. 5 is a transverse section through the guiding device and its support.

Fig. 6 is a view inside elevation of another form of fabric guiding device.

Fig. 7 is a view of the guiding device in perspective. 1

Fig. 8 is a View in transverse section of the guiding device in use.

Fig. 9 is a view in perspective of a stitch spacing device in place upon its support.

Fig. 10 is a view in perspective of a cord stitching device.

Fig. 11 is a view of the cord stitching device in transverse section and in use.

Fig. 12 is an under side view of a soutache guiding device.

Fig. 13 is a view in section of the device shown in the immediate preceding figure.

Fig. 1 1 is a view in plan of a tape stitching device.

Fig. 15 is a view thereof inside elevation.

Fig. 16 is a view in side elevation of a device for stitching tape to folded fabric.

Fig. '17 is a view thereof in top plan.

Fig. 18 is a section taken on the line 1818 of Fig. 17, and

Fig. 19 is a view thereof in end elevation.

With reference to Fig. 1 of the drawings 10 indicates a presser foot of conventional form having the long toe 11 and short toe 12. My invention comprises a portion 13 to embrace the shank of the presser foot and a flange 1i, apertured to receive the thumb screw 15 which acts to secure'my attachment as well as the presser foot in place upon the shank. Formed on the portion 13 is a horizontal curved and hollow extension 16 to receive the long toe 11, and a portion 17 which partly incloses the short toe 12.

hflounted on the extension 16 is a flattened sleeve 18 having an aperture 19 in its upper wall. A pair of ears 20 are formed on the extension for co-action with ears 21 of a lever 22 having one end bent and formed with a reduced extension 23 to enter the opening 19 and the other end bent upward to form a finger engaging portion 24:. A pin 25 serves to pivotally connect the cars 20 and 21, and a coiled spring 26 is encompassed about the pin with one end bearing against the extension 16 and the other against the lever.

One of my attachments is shown in Figs.

2 and 3. It comprises an arcuate member 27 having one edge bent at an angle as at 28 and said edge formed with a shank 29 which is disposed transversely of the portion 27 and formed with an opening 36. In use the shank 29 is inserted in the sleeve 18 so as to dispose the portion 27 beneath the long toe of the presser foot as shown in Fig. 2. The reduced extension 23 is permitted to enter the opening 30 of the shank 29. As each stitch is taken the fabric feeding device of the sewing machine crowds the fabric against the rear edge of the arcuate portion 27 and thereby forms a fold which is subse quently stitched. This process is continued and as a result the fabric is gathered. The attachment may be readily removed by depressing the lever 22 so as to disengage the latter from the shank.

I have illustrated in Figs. 4 and 5 a device for permitting the formation of a line of stitching parallel to the edge of a fabric. This device comprises an arcuate plate 31 having one end bifurcated to form a longer portion 32 to extend beneath the long toe of the presser foot and a short portion 33 to lie beneath the short toe. The edge of the portion 32 is bent upward as at 34 and said bent portion is formed with an apertured shank 35 to enter the sleeve 18 of the support shown in Fig. 1. The outer edge of the portion 33 is bent downward to form a guide flange 36. In use the device is secured upon the support in the manner set forth above and as shown in Fig. 5. The fabric is engaged at its margin against the guide flange 36. and through operation of the sewing machine a line of stitching is formed within the bifurcation of the plate 32 and if the fabric is held against said guide flange the line of stitching will be parallel to the margin of the goons.

I It becomes necessary at times to stitch one or more folds of thick fabric to plies of relatively thin fabric. This operation is done only with great inconvenience by means of the presser foot since the latter bears only on the thick fabric and no means is provided to retain the thin fabric in engagement with the fabric feeding device of the machine. To this end I provide a relatively thick arcuate plate 37 which is formed at one end with an apertured shank 88, and its opposite end widened and somewhat thinner as at 89. The intermediate portion 7 of the plate is of a width corresponding to the width of the long toe of the presser foot. The operation of the device is clearly shown in Fig. 8. The plate 37 virtually adds thickness to the long toe so that the thin fabric can be engaged thereby while the short toe rests upon the thick fabric. In this way equal pressure is applied to both fabrics.

I have illustrated in Fig. 9 a device comprising a plate 40 which is disposed in a vertical plane and is formed with a lateral shank 41 formed with a plurality of apertures 42. The shank is inserted in the sleeve 18 of the supporting device and the plate 40 may be adjusted toward or from the latter. The shank 41 may also be graduated if desired. In use a row of stitching is formed as when making a hem. The fabric is then moved to permit the plate 40 to rest upon the row of stitching. During operation of the machine the plate 40 is always retained upon the row of stitching and in this manner a second row may be formed exactly parallel to the first.

T 0 enable the operator to sew a cord in the fold of a piece of fabric I provide a device shown. in Fig. 10 which comprises an arouate plate 43 having a shank 44 for association with the support. The plate lies beneath the presser foot and is formed on'its under side with a longitudinally extending groove 45 which is widened for one half its length as at 46, the plate being apertured at a point intermediate its ends. As shown in Fig. 11 the groove permits the reception therein of the folded edge of a fabric containing a cord, and the needle descends through the aperture forming a row of stitching which incloses the cord. The wider portion of the groove which is located atthe forward end of the plate insures the folding of the fabric around the cord before it is stitched.

A similar device is shown in Figs. 12 and 13 designed particularly to facilitate the attachment of soutache to garments. This comprises an arcuate plate 47 having a longitudinally extending groove 48, and an intermediate aperture 49 intersecting the groove. The forward end of the plate is provided upon its under side with a guide member 50 which bridges the groove. A shank 51 is also provided to permit the association of the device with the support. In use the end of the soutache is inserted in the guide 50 and permitted to lie in the groove. The needle descends through the aperture 49 and in so doing stitches the soutache to the fabric. The groove and guide member insure the correct placing of the soutache.

A device for stitching braid is shown in Figs. 14 and 15 and comprises a flat tubular guide 52 formed with a shank 58 in the usual manner. A. lip 55 is formed at the forward end of the guide and an additional guide member 56 is'provided in the nature of a wire having one end secured to the guide and the other formed with a flattened loop 57 disposed in alinement With the tubular guide. The braid is threaded through the loop 57 and through the tubular guide. In operation both guides, as Well as the lip 55 act to straighten the braid before its attachment to the fabric which is accomjusted positions.

plished by the needle which operates at the rear end of the tubular guide.

I have illustrated in Figs. 16 to 19 a device for stitching braid of any size to the folded edge of the fabric. It comprises a channel member 58 provided with a shank 59, and a guide flange 60 which is of substantially ogee configuration in cross section, and which tapers, having its small end located at the rear end of the channel member for a purpose which will be presently obvious. A transversely extending shank 61 is formed on the channel member and provided with a series of apertures 62. A second channnel member 63 is provided to inclose the first channel member for adjustment toward and away therefrom. A spring finger 64- is mounted on the channel mem ber 68 and is provided with a lug 65 which may enter any one of the openings 62 to secure the channel members in relatively ad- It will be obvious that the association of the channel members provides a tubular guideway in which to receive the braid. The width or aperture of the guide member may thus be varied to receive braid of various widths. In use the braid is threaded through the guide and it will be noted that the guide is so located relative to the path of movement of the needle as to cause the needle to enter the right hand edge of the braid. iolded edge inserted in the guide member (30 which acts to flatten the fold and to locate the folded edge beneath the edge oi the braid so that the needle can penetrate both the fabric and the braid.

While I have illustrated and described my invention with some degree of particularity I realize that in practice various alterations therein may be made. I therefore reserve the right and privilege of changing the form of. the details of construction or otherwise The fabric is folded and the altering the arrangement of the correlated parts without departing from the spirit of the invention or the scope of the appended claims.

Having thus described my invention what I claim as new and desire to secure by United States Letters Patent is:

1. In combination with presser foot, means for partly inclosing the presser foot, a sleeve on said means, a sewing machine accessory, a shank on said accessory to enter the sleeve, and means to enter the sleeve and shank to releasably secure the accessory against displacement.

2. A sewing machine attachment including a casing to partly inclose the presser foot, a sleeve on said casing having an aperture in one wall, and a spring pressed pawl having one end reduced to enter the aperture.

3. A sewing machine attachment includ- 4 ing a casing to partly inclose the presser foot, a sleeve on said casing having an aperture in one wall, a pair of ears on the casing, a lever, a pair of ears on the lever to receive the first mentioned ears therebetween, a pin connecting the ears, a spring encircling the pin having one end bearing against the lever, and a reduced extension of the lever to enter the aperture of the sleeve.

4. In combination with the presser foot, a casing to partly inclose the foot, 21 gathering device comprising an arcuateplate of a length substantially one half the length of the presser foot, and means for securing the plate to the forward end of the casing.

In testimony whereof I afiix my signature inprescnce'of two witnesses.

AGATINO TRIGOMI.

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