Sign up
Title:
Piping attachment for sewing machines
United States Patent 2393292
Abstract:
This invention relates to piping attachments for seWilig, machines. The principal objects, of the invention are to provide a piping attachment that cani b'e readily mounted on- and dismounted fromitteh sewing machine without disorganization or alteration thereof, that- will provide for both...


Inventors:
Coates, Elmer T.
Publication Date:
01/22/1946
Assignee:
ANGELICA JACKET COMPANY
Primary Class:
Other Classes:
112/147, D15/72
International Classes:
D05B35/06
View Patent Images:
Description:

This invention relates to piping attachments for seWilig, machines. The principal objects, of the invention are to provide a piping attachment that cani b'e readily mounted on- and dismounted fromitteh sewing machine without disorganization or alteration thereof, that- will provide for both horizontal and vertical adjustment of the attachment relative to the machine, that-will permit the attachment to be swung upwardly clear of the, space between.the head and the-work table of-the sewing. machine without loss-of, either of said. adjustments- and, that will, provide a- clear space for- the operator's fingers in front of the needle and presser foot in the operative, position of the attachment. The: invention consists in the piping attachment and in the combinations and arrangements of parts hereinafter described and 'claimed, In. the accompanying drawing, which forms part of-this, specification and wherein like- symbols refer to-like parts wherever they occur; Fig. 1 is. a fragmentary front elevational view of a sewing machine, provided with a, piping attachment embodyingmy invention; Fig. 2 is an enlargedýview similar to Fig. 1,.

Fig. 3 is an end elevational view- of: the- parts shown-in-Fig. 2, Fig. 4 is a horizontal-: cross-sectional view on the-line 4-4 in Fig. 2, Fig. 5-is a horizontal cross-sectional view" on the.line 5-5 in Fig. 2, Fig. 6-is a vertical cross-sectional;view on the line 6-6 in Fig. 2, Fig.- 7 is a vertical cross-sectional view on the line.--7 in:Fig. 3, Fig. 8 is-a-plan view of a piece of fabric with' the- pipingi incorporated in the hemmed margin. thereof; andFig.-9 is a vertical cross-section onthe line 9-9 in Fig. 8.

In. the accompanying drawing, my-invention is illustrated in connection with a sewing- machine comprising, a work table I, an arm. 2-overhanging said work table, and terminatingý in a head 3., a_ presser: foot 4 and, needle 5- reciprocable in. said,-head, and suitable work feeding elements 6% operating, in openings 7. provided therefor in said work table below said needle-and presser foot.

This, construction of sewing machine is well known and it is considered unnecessary to illustrate it in detail.

My piping attachment comprises a bracket 8 which is rigidly secured at its front end by means of a screw 9 to the end face of the sewing machine head 3 and has its rear end portion 10 offset .iutwardly relative thereto. A' plate-like arm Ifl is secured'by a'pair- of_ vertically, spacedhborzontal screws 1IT fiatwise: to the rear end portion of the bracket- 8 Tle twoý screvws 12 exteid' throiugi an eloigated vertical slot: I 3fin:the. rear end: of.'the arim n I, .whereby said. arm .may be adjusted vertically with- respect to said bracket 8. Splate 14 covers, the- slot -13 and is claniped-flatwise againsttlhe arml I1. bythe heads of'the-screws 12. As shown in the drawig;, the-arm i :has, an opening 5I extending: horizontally therethrough opposite the securiing screw 9'ffor- the: bracket 8 so that- a screw driver: may be inserted: throiugh said-openiig to enigage said screw.

Pivbtally seciued: at- one end- by. means of a horizontal pivot, screw 16. to the-: lower: front corner of the arm Il -is a plate-like arm I ladapted for vertical swinging movement-relative to the arm. I parallel -with.the line of "work, feed of. the sewiing machine; In the operative position-of the attachment,; the. pivotal arm 1l is swung- downwardly, into vertical position, rearward swinging movement of said.arm being limited by- means of a stop lug 18 thereon that is adapted to abut against- the underside- of the' arm I-1Mbunted. on a lateral extension- I of the pivotal arm. 17 at; the free lower, end thereof for.horizontal- adjustment: relative thereto transversely of the line of work feed is- a down wardly. tapering, tape. folding .tube 20, The tube 2T0'has a lateral extension 2.l that is-secured flatwise to the lateral extension I 9-of the-pivotal arm17T by means, of a pair of, horizontally, spaced screws 22thiat extend through an elongated horizontal slot 23 in. the tube. extension 2- and; are threaded into the arm extension 19I4thereby, permitting bodily adjustment of said tube crosswise of the line of work feed. A plate 24 covers the slot 23 and-is clamped flatwise-to the front-face of the tube extension 21 by. the' heads of the screws 22.

At. the lower end of the tape-folding tube 20, the head opposing side wall thereof is continued downwardly in the form: of a guide finger 25 that, curves, downwardly and outwardly; as at 25a in thle direction of the line of work and terminates in a rearwardly- extending horizontally disposed free-end, portion 25b-that is disposed:in the- line. of work feed just forward of the-presser foot 4 and needle 5 and just above the feed elements 6 in the top of the work table 1. The free end 25b of the guide finger 25 has a tape receiving opening 26 extending vertically therethrough.

The tape A from which the piping B is formed is taken off of a supply roll 27 which is rotatably mounted on a horizontal journal 28a provided therefor on the upper end of an upright 28 whose lower end is rigidly secured to the end face of the sewing machine head 3. The tape passes downwardly from the supply roll 27 through the tapered tube 20 and is folded longitudinally during its downward travel therethrough to form the piping B. The folded tape or piping B then passes beneath the downwardly curved guide finger 25 at the lower end of the tape folding tube 20, thence rearwardly over the front edge vertical opening 26 in the free end 25b of said finger and thence under the rear edge of said opening and beneath the needle 5 and presser foot 4 where it is attached to the goods C by the sewing mechanism of the machine, the tape being drawn from the supply roll by the work feeding elements 6 of said machine. The folded tape or piping B may be attached to the goods C in any desired manner, such, for instance, in the manner shown in Figs. 8 and 9, wherein the piping is embodied in the hem C' of the goods and is secured by the securing stitches C" for the hem.

The principal advantages of the above piping attachment are the easy attachment thereof to the sewing machine without disorganization. thereof, the horizontal and vertical adjustments which permit the height of the free end of the guide finger to be varied and said end located in line with the line of stitching, the pivotal connection which permits the tape folding tube to be swung upwardly clear of the work table and the needle and presser foot without disturbing said adjustments, and the horizontal offsetting of the vertically disposed tape folding tube relative to the line of stitching so as to provide a clear operating space for the operator's fingers in front of the needle and presser foot.

Obviously, the hereinbefore described piping attachment admits of considerable modification without departing from the invention. Therefore, I do not wish to be limited to the precise arrangement shown and described.

What I claim is: 1. A piping attachment for an ordinary sewing machine comprising a downwardly opening upright tape folding tube adapted for mounting on said machine at one side of the line of work feed thereof, said tube having a laterally extending guide finger rigid with the lower end thereof, said finger having a vertical opening in the free end portion thereof through which the tape folded in said tube is presented in position for stitching by the needle of the sewing machine and for feeding by the work feeding mechanism thereof through said tube and along said finger and through said opening.

2. The combination set forth in claim 1, wherein means are provided for adjusting said tube vertically relative to said machine to vary the height of the guide finger.

3. The combination set forth in claim 1, wherein separate means are provided for adjusting said tube vertically relative to said machine to vary the height of the guide finger and for adjusting said tube horizontally relative to said machine transverse to the line of work feed to bring the opening in said guide finger in line with the work feeding mechanism.

4. The combination set forth in claim 1, wherein means are provided for adjusting said tube vertically relative to said machine to vary the height of the guide finger, and wherein said tube is mounted for vertical swinging movement to move said finger into and out of operative position.

5. A piping attachment for an ordinary sewing machine comprising a downwardly opening upright tape folding tube adapted for mounting on said machine entirely at one side of the work feeding mechanism thereof, said tube having a laterally extending guide finger rigid with the lower end thereof, said guide finger having a vertical opening through the free end portion thereof through which tape folded in said tube is presented in position for stitching by the needle of the sewing machine and for feeding by the work feeding mechanism thereof through said tape folding tube and along said finger and through said opening over the front edge and under the rear edge of the latter, means for adjusting said tube relative to said machine to vary the level of the guide finger, means for adjusting said tube horizontally relative to said machine transverse to the line of work feed, and means for mounting said tube for vertical swinging movement in a plane substantially parallel with the line of work feed.

6. A piping attachment for an ordinary sewing machine comprising a bracket adapted for rigid attachment to the head of said machine, an arm secured to said bracket for vertical adjustment relative thereto, an arm pivotally supported on said first mentioned arm for vertically swinging movement relative thereto in a plane substantially parallel with the work feed, a downwardly opening tape folding tube mounted on said pivotal arm and having a guide finger extending laterally therefrom in the direction of the work feeding mechanism of said machine, said finger having a vertical opening through its free end portion through which tape folded in said tube is presented in position for stitching by the needle of said sewing machine and for feeding by the work feeding mechanism thereof through said tube and along said finger and through said opening, and means for adjusting said tube horizontally relative to the pivotal supporting arm therefor transversely of the line of work feed to bring the opening in said guide finger in line with the work feeding mechanism of the sewing machine.

7. A piping attachment for an ordinary sewing machine comprising a downwardly opening tape folding tube adapted for mounting on the head of said machine in a substantially vertical position entirely at one side of the work feeding mechanism, said tube having a laterally extending guide finger rigid with the lower end thereof adapted to overhang said work feeding mechanism, said guide finger having an opening in the free end portion thereof through which tape folded in said tube is presented in position for stitching by the needle of the sewing machine and for feeding by the work feeding mechanism thereof through said tube and along said finger and through said opening.

ELMER T. COATES.