US2095080A - Embroidering and cording attachment for sewing machines - Google Patents

Description

E. PRATO Oct. 5, 1937.

EMBRO'IDERING AND CORDING ATTACHMENT FOR SEWING MACHINES 2 Sheets-Sheet 1 Filed March 14, 1956 Esteban Pr-ato Oct. 5, 1937. E, PRATQ 2,095,080

EMBROIDERING AND CORDING ATTACHMENT FOR SEWING MACHINES Filed March 14, 193.6

2 Sheefs r-Sheet 2 gwue/wbcvo Esteban 1 1 41460 W Wi'veom Patented Oct. 5, 1937 V UNITED STATES PATENT OFFICE EDIBROIDERING AND CORDINGr ATTACH- MENT FORSEWING MACHINES Esteban Prato, Caracas, Venezuela, assignor to The Singer Manufacturing Company, Elizabeth, N. J a corporation of New Jersey Application March 14, 1936, Serial No. 68,831

9Claims. (01 112-439) This invention relates to embroidering and ably adjustably secured by means of'the concording attachments for sewing machines and has ventional screw and slot means I6. The leaffor an object to provide a cording attachment spring I5, in addition to being long, is quite of simplified construction which is adapted to thin and resilient; being preferably about .015

5 handle one or more cords of various sizes, particinch thick. It extends downwardly from the 5 ularly small sizes, and present such cord or cords screw I6, which is highergthan the shank 6, at an with certainty to the sewing machine needle. inclination to the vertical, preferably as shown The invention also aims to provide for the ready in Fig.2, and terminates in the slot Ill between adjustment of the attachment to suit the ,parthe presser- foot toes 8 and 9. The lower end- 10 ticular cord or cords being handled thereby. po on f he l af-spri I5 is Preferably b n With the above and other objects in 'view,'as or curved cylindrically about an axis :13, Fig. 6, will hereinafter appear, the invention comprises extending horizontally in the direction of seam the devices, combinations, and arrangements of formation, to provide a cylindrically convex cordparts hereinafter set forth and illustrated in the positioning face II which is disposed in the path accompanying drawings of a preferredembodh of reciprocation of the needle I so as to be en- 15 ment of the invention, from which the several gagedand slightly displaced by the needle. The features of the invention and the advantages atrear edge It of the leaf-spring member should tained thereby will be readily understoodby. those preferably'be set close to but not touching the skilled in the art. 7 rear presser-foot wall 9 which latter is disposed In the accompanying drawings, Fig. 1 isa perpreferably closely in rear of the needle-path, as

spective view of an attachment'embodying the shown'in Figs. 3 and 5. The leaf-spring I5 is invention and applied to the presser-bar of a also preferably provided with the cord-guiding sewing machine. Fig. 2 is a front elevation of the apertures I8 through which one or more cords attachment. Fig. 3 is a side elevation of the at- I9 are led at a downward inclination along and tachment. Fig. 4 is abottom plan, view of the helicallyof the cylindrically convex face I'I,Fig. 5, :5 foot-portion of theattachment. Fig. 5 is a large ofthe leaf-spring member I5 and under the heel scale longitudinal vertical section through the 9 of the presser-foot. foot-portion of the attachment. Fig. 6 is a sec- An adjusting screw 2I carried by the vertical tion on the line 66, Fig. 5, and Fig. 7 is a plan arm I4 bears against the leaf-spring I5 and regview of a duplex corded seam as produced by the ulates the lateral position of the effective lower 30 attachment. end thereof relative to the sewing machine needle In the drawings I represents the conventional I. The screw 2| may also serve to regulate the taper-pointed sewing machine needle, which tension on the leaf-spring I5 in case such regureciprocates vertically through the needle-hole 2 lation is deemed desirable in sewing cords of cerin the throat-plate 3 and cooperates with the tain thicknesses or textures. 35 usual loop-taker mechanism (not shown) below In the operation of the above described prethe throat-plate to form stitches. The work is ferred embodiment of the invention, the screw fed by the usual feed-dog 4. 2| is ordinarily adjusted so that the point of the The present embodiment of the invention comneedle I lightly strikes and laterally displaces 4.0 prises a presser-foot 5 which is formed with a the leaf-spring member I5. By referring to Fig. 6 40 r shank 6 adapting it for attachment by the screw it will be observed that, on account of the convex 6' to the usual sewing machine presser-bar I. face ll of the leaf-spring, the point of contact 22' The presser-foot 5 preferably has a tread-portion between the conical side wall of the needle and formed with spaced toes 8, 9 between which is such face lies above the needle-point which is the needle-opening 01' slot Ill. The toe 9 and clear of the face I7 and hence penetrates with 4 heel 9 are preferably thickened vertically relacertainty the cord or cords I9 lying thereagainst. tive to the toe 8 to form the vertical side wall Where two cords I9 are used, they are usually 9 and rear wall 9". I secured in offset superposed relation to the body- The shank 6 is preferably formed with an arm fabric 23 by the single line of straight-away I2 having a forwardly extending branch arm stitches 24. Where cords of contrasting colors are 5 I2( formed with the multiple cord-guiding and used, very unusual and attractive cording effects tensioning apertures I3. Integral with and rising may be readily produced. The tension applied. from the arm I2 is a vertical supporting branch to the cords I9 by the lead-in guide apertures I3 arm I4 to the upper end of which the comparais a very light one; just enough to prevent slack tively long cord-guiding leaf-spring I5 is preferening of the cord or cords during the sewing op- 55' ited to the detailsiof' construction and relative eration'and to maintain the cord or cords against the convex face I! of the'leaf-spring member IS.

The invention is not to be understood as limarrangements of parts shown and described as such details and relative arrangements may obviously be modified Without departure from the invention.

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

l. Thecombination with a reciprocatory needle, work-feeding means and apresser-foot, of

cord-guiding meansdispos'ed in the normal path" of reciprocation of said needle soas to be engaged by the latter said cord guiding meansbeing yieldable away from the' nedlepatli to such.

a degreeas to be deflected by said needle in the down-stroke of the latter. 5! i,

2. The combination with'a reciprocatory needle, work-feeding means and a 'presser-foot, of cord-guiding means having a cord-guiding surface disposed in the normal path ofireciprocation of saidneedle so as'to be engaged by the latter,

said cord-guiding means being yieldable away from the n'eedle path tosuch a degree as to be deflected by said needle in the down-stroke of the latter. l 7

;'-3. In'*a sewing machine the combinationwith a 'reciprocatoryeye-pointed needle, of means to present a cord to said needle comprising a member-having a cord-guiding surface which is dis- I posed in the normal path of reciprocation of said needle and is curvedabout an axis extending in thedirection of seam-formation, and means for leading the cord helically of said surface .so that the pointed needle in grazing the latter will penetratethe cord.

4, The'combination with a reciprocatory 'needle, of meanssfor positioning acord'for penetration bysaid needle, said means comprising a tration by said needle, said means comprising a support, a leaf-spring member mounted on said support and having a free cord-positioning faceportion disposed in the normal path of reciprocation of said needle and yieldable laterally of the needle-path under the influence of said needle.

6. The combination with'a reciprocatory needle, of means for positioning a cord for penetration by said needle, said means comprising a support, a leaf-spring member mounted on said support and having a free cord-positioning faceportion disposed in and yieldable laterally of the needle-path, said member having one or more cord-guiding apertures therein in advance of said face-portion.

'7. The combination with a reciprocatory neethe normal path of reciprocation of said needle and yieldable laterally of .theneedle-path under the influenceof. said needle, and an'adjusting screw bearing uponrsaidl leaf-spring member.

8. The combination witha reciprocatory conically pointed needle, and feeding mechanism, of. a leaf-spring member having.a'cord-positioning convex face yieldable laterally of the line. of

seam-formation under theyinfluence of said nee.- 'dle and disposed in the path. normal of said needle, and means for leading a cord along .said

convex face and across theneedle-path at an elevation below the point of tangency of the conical surface of the needle point and said face.

9. A cording attachment for sewing machines comprising a presser-member including an attaching shank and a tread-portion having a nee v -dle opening, a support rigidly associated with said pites'ser-member and rising higher than said ESTEBAN PRATOLV

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