US2209930A - Edge-folding guide for sewing machines - Google Patents

Description

July so, 1940. J, ME 2,209,930

EDGE-FOLDING GUIDE FOR SEWING MACHINES Filed Oct. '19, 1938 2 Sheets-Sheet 1 6 clbsef I. palme July 30, 1940. I PALME 2,209,930

EDGE FOLDING GUIDE FOR SEWING MACHINES Filed Oct. 19, 1938 2 Sh eets-Shet 2 Wifneu Josef F lblme Patented July 30, 1940 2,209,930

' n r f Y 2,209,930. f EDGE- FOLDING oUIbE ,Foit 'sE'WInG MACHINES j Josef F. Palme, Elizabeth, N. J., assignor to The -Singer 'Manufacturing Company, Elizabeth,

N. J., a corporation of NewJer-seyv Application Qctobcr 19, 1938;"SerialNo.1235,723

,4 Claims. =(o1,. 112.---1'4.v) 1 t This invention relates to sewingnilachines and having 'journal'ed thereinia horizontal recipromore particularly to improvements in edge -foldcatory needle-bar 2 carrying needle 3 cooperating ing attachments adapted foruse on overseaming .with a looper 4 in the formation of voveredge machines of the cup-feed type, suchasidisclosed, stitches which are formed'about the edge of a 5 for instance, in the U. S. patent to R. Li Plumley, body .mat erial M fed through the machine by the 5 No. 1,891,605, dated Dec. 20, 1932. o t usual fe'ed cu'p 5 opposed by a spring-biased One of the objects of the presentinvention is presser-member 6. I I U the provision of means applicable to. acupefeed Fixed in the machine frame I is an attachsewing machine for producingan edge 'fojld or meritsupporting rod"! having fastened thereto at hem of uniform width in a body-material, and itsireeendmyjimproved'edge-folding attachment 10 particularly an edge-fold orhem having a cer- 8. The'edge-fol'ding attachment compriseses.

tain degree of uniformity and quality in its finsentially threesheet-m'etal members, 9, l0 and II,

ished state. I j arranged in stackedrelation'upon'the supporting Another object of thejpresent invention is to rod l and secured thereto by clamp-screws I2.

' provide, in an overseaming machine, a work- The lowermeniber 9, which is disclosed inFig. 8,

guiding attachment adapted to effectively c'onpreferably comprises an inverted L-shaped sectrol the work to a point beyond thelineof needle tion of which the vertical limb portion i3 is exreciprocation, wherebythe stitches will not: aptended toward t e deli-Very end of the attachpreciably distort the body-material. I merit and formed into a work-folding scroll I4 7 2 With the above and other objectsin view; as terminating in a stitch-finger l5 about which the will hereinafter appear, the invention comprises stitches are"formed.- Depending from the Workthe devices, combinations and arrangements 'of foldingfsc e s a p o fl e its l we parts hereinafter set forth and illustrated in the end to facilitate the introduction of work into the accompanying drawings of a preferred embodiattachment and to prevent the contact of the J) ment of the invention, from which the several w k wi h the Presser-member 6. The h riz ntal features of the invention and the advantages atlimb portion I! of the inverted L-shaped Section tained thereby will be readily understood by those is pr v w h p r ure 8 h h w ich xskilled in the art. tend the clamp-screws l2.

In the accompanying drawings, Fig. 1 is a top The intermediate member ID, which is clearly 12" plan iew of a, portion of a, conventional oupillustrated in Fig. 7, is preferably substantially feed sewing machine embodying the present im- U-shaped, as at 19, one limb 20 of which is likeprovement. wise extended toward the delivery end of the at- Fig. 2 is an enlarged fragmentary view of a tachment providing an attenuated work-supportion of Fig. 1, showing the manner in which porting finger arbor 2| about Which the yn the stitches are formed about the folded edge of mat al s folded y t s r ll l4- p nd n the body-material. from the arbor 2| substantially midway its ends, Fig. 3 is a front elevation of the present imis an apron 22 flared at its lower end reversely of provement. apron Hi, the two aprons l6 and 2| providing a F]' g ,4 i a perspective View of the present imsubstantially vertical passageway for the body- ,n provement, illustrating clearly the relative posie e w e y the Same is prevented from 40 tions of the various elements of the attachment. contacting the machine parts which may or may Fig. 5 represents a vertical section taken along ot be fouled With This passageway u e th u 5. 5,Fi 3, insures that the body-material is properly fed Fig. 6 represents a vertical section taken along into the attachment- Similerly t0 t e lower 4.3 the line 6-6, Fig. 3. member 9, the intermediate member I!) is formed Figs. '7, 8 and 9 are perspective views of each of W th a ateral flange 23 pe llled as at 4 to rethe elements of the attachment, showing clearly oeive the Clamp-Screws their details of construction. In order to control effectively the amount of Fig 10 is a fragmentary iew of a, body-mabody-material used in the edge-fold there is so terial having applied thereto an edge-finishing p d d a upp r ed euid m m r seam produced by a cup-feed machine fitted with Secured in adjusted position preferably by One O the present improvement. the clamp-screws 12, as shown in Fig. 4. The

Referring more specifically to the drawings, upper member is formed at one end with a dethe invention is disclosed as embodied in a Singer pending lip 25 which is normally disposed within 5 Class 176 cup-feed machine comprisinga frame I the U-shaped portion IQ of the intermediate 5 member l0, and at its other end with an upstanding ear 26 which may be grasped by the operator to facilitate shifting of the edge-guiding member II when the clamp-screw is loosened. It will be seen in Fig. 9 that the provision of the enlarged aperture 2'! provides for adjustment of the edgeguiding lip 25 toward and from the arbor 2|, thereby to control the amount of body-material used in the edge-fold.

In the operation of the machine it will be understood that the attachment is supported so that the stitch-finger I5 of the work-folding scroll l4 projects above the reciprocatory needle 3, whereby it functions to prevent the stitches S, Fig. 2, from being set too tight, and thereby insures the production of an edge-fold having a very smooth appearance. It will be observed also that, with the present attachment, the body-material is under control to and slightly beyond the point at which the needle 3 penetrates the same.

Obviously this control of the work is desirable and particularly so when stitching flimsy materials, such as silk and the like.

. The machine disclosed is particularly adapted for edge-finishing handkerchiefs which are fed through the machine with the body-material in a substantially vertical position between the feedcup 5 and the opposed presser-member 6.

While I have illustrated and described the preferred embodiment of my invention, it is obvious that minor changes in the details of construction and the arrangement of the parts may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus set forth the nature of the invention what I claim herein is:

1. An edge-folding attachment for overseaming sewing machines comprising an arbor and a scroll member adapted to fold a body-material about said arbor, said scroll member terminating in a stitch-finger about which the edge-fold-securing stitches are formed as the body-material is advanced through the attachment, and means including spaced aprons projecting from said arbor and said scroll members providing between them a work-directing passageway insuring proper entrance of the body-material into the attachment.

2. An edge-folding attachment for sewing machines comprising a plurality of members arranged in stacked relation, the lower member comprising an inverted L-shaped section having one limb thereof extended and formed into a work-folding scroll, a second member substantially U-shaped at one end and terminating in an arbor adapted to cooperate with said scroll, and an upper member provided with means for guiding one edge of a body-material as it is fed through the attachment.

8. In an overseaming machine, the combination, with stitch-forming mechanism including a reciprocatory needle, and work-feeding means including a feed-up for advancing the work through the machine in a substantially vertical position, of an edge-folding attachment disposed in advance of the work-feeding means, said edgefolding attachment including a work-folding scroll-member disposed closely above said feedcup and terminating in a stitch-finger overlying the line of reciprocation of the needle, and a second member providing an attenuated arbor extending within said scroll-member and adapted to cooperate therewith in hem-folding the marginal edge .of a body-material.

4. An edge-folding attachment for sewing machines comprising a plurality of members arranged in stacked relation, one of said members comprising a substantially U-shaped section having one of the limbs thereof terminating in a lateral supporting flange and the other limb thereof terminating in an arbor, and another of said members comprising an inverted L shaped section having one of the limbs thereof providing a lateral supporting flange and the other limb thereof terminating in a work-folding scroll arranged in cooperative relation with said arbor.

JOSEF F. PALME.

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