US366147A - And stanley w - Google Patents

Description

(No Model.) W. I. BROOKS, A. V. ABEROROMBIE & S.W.HO UG1 IT01 I.

OORDING ATTACHMENT FOB. SEWING MACHINES. No. 366,147. Patented July '5, 1887.

N. PETERs. Flmtu-Lilhcgmphcr. Washington. D. C.

Unite STATES PATENT @rrrcao \VILLIAM F. BRQOKS AND ALEXANDER V. ABERGROMBIE, OF BRIDGEPORT,

CONN ECTICUT, AND STANLEY W. HOUGHTON, OF SPRINGFIELD, MASSA- OHUSETTS; SAID I-IOUGHTON ASSIGNOR TO SAID BROOKS AND ABER- GROMBIE.

CORDING ATTACHMENT FOR SEWlNG-=MACHINES.

SPECIFICATION forming part of Letters Patent No. 366,147, dated duly 5, 1887.

Serial No. 214,534. .(No model.)

To rtZl whom it may concern.-

Be it known that we, WILLIAM F. BROOKS and ALEXANDER V. ABEROROMBIE, both of Bridgeport, count-y of Fairfield, and State of Connecticut, and STANLEY W. HOUGHTON, of Springfield, county of Hampdcn, and State of Massachusetts, have invented an Improvement in Cording Attachments for Sewing-lllachines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings rep;

- resenting likeparts. l

In the process of cording with sewing-machines by means of the attachments commonly 1 5 used for that purpose, ofthe two plies between which the cord is laid the upper ply in its progress toward the needle is bent in a direction transverse to theline ofstitching as the work to be com ineneed is introduced under the presserfoot to'bc stitched, and consequently'the upper ply so bent down at its end and stitched to the under ply is taken up and shortened by the thickness of the cords interposed between the said plies, such shortening or taking up of the upper ply being increased by the laying in or stitching of successive parallel and contiguous cords. This difficulty or defect has been overcome to some'extent by the use of what is called a right and left cordcr, whereby the succes- 0 sive cords are laid and stitched in opposite direction, so that the ply which is held back in one direction when commencing to stitch the two plies together with a cord between is held back in the opposite direction in stitching the next cord,and the edges ofthe two plies are thus kept measurably even. We have overcome this difficulty by so constructing the cording mechanism that the degree of bending of the upper ply is diminished as the material is first intro- 0 duced under the presser-foot to be stitched, and the two plies are subjected to substantially uniform amount of bending, or meet with the same resistance in passing toward the needle, so that neither ply is held back of the other. 5 To this end we have made the throat-plate thicker than heretofore, and have providedit with a recess below the general surface or level thereof, to receive the delivering end of the corderarm, and have beveled in inclined planes the adjacent part of the anterior end of the throat-plate, so that the rise is gradual from the bottom of said recess to the general surface of the plate. We have also provided means for so adjusting the cordcr-arm that it may be made to press more or less against 5 either of the two plies and still be held rigidly in position. By this construction the under ply, passing under the cordcr-arm and' up the said inclined plane, is bent transversely, as stated, to the same extent as the upper ply, passing under the inclined front end of the presser-foot and over the cordcr. llf there should be any difference or inequality oftransverse bending at the commencement of the cording, as stated, such bending maybe equal- 6 ized by slightly raising orlowering the cordcrarm. This contrivance is equally applicable to either of the common styles of cordingviz., that in which the under ply remains flat and is corrugated over the cord, and that in 0 which the two plies are corrugated on opp0 site sides of the cord. In the former case the presser-foot only is provided with grooves to cover the ridges formed by the cords. In the latter both presser-foot and throat plate are grooved.

Our invention consists, essentially, in the combination,with a throat-plate having in its upper surface a recessed or sunken portion in front of the needle-hole, said recessed portion terminating at its rear end in an incline rising to the level of the main portion of the upper surface of said plate, of a cordcr to enter the said recess, whereby the under ply of the material to be corded may be bent upward in a 8 5 manner to correspond with the downward bend of the upper ply,subst-antially as will be described. I

Other features of our invention will be hereinafter described, and particularly defined in 0 the claims at the end of this specification.

Figure 1 is a plan view of a suflicient portion of a sewing-machine to illustrate our invention, the figure showing our improved cording attachment and part of the bedof a 5 sewin g-machin e, the p ressenfoot, and the shank thereof. Fig. 2 is an elevation of a part of Fig. 1, looking at it in the direction of the ar the dotted line as :0.

row, Fig. 1. Fig. 3 is a section of Fig. l in Fig. 4. is a perspective view of the throat-plate removed from the machine. Fig. 5 is a section ofFig. 4 in the line 00 00. Fig. 6 shows a piece of corded material as it will appear at its end when corded by our improved corder; andFig. 7, a like piece of material corded upon an ordinary corder, one ply being made to fall short of the other in the process of cording.

The bed-plate A, the feed B, and the presserfoot shank O are supposed to be the same as in the Wheeler & Wilson sewing machine, style No. 10. The cord-guiding arm a, having at its outer end a cord-guide, a, of usual shape, is beveled or reduced at its front edges, as at 22. The cord-guiding arm a is herein shown as pivoted by a pin, a in a block, a attached by a screw, a, to the bed-plate,in the usual way. The said block has a shouldered screw or other device, a for raising or lowering the arm a, and also a thumb-screw or other device, a", for securing the arm a in the proper position to which it has been brought by means of the device a. The screw or other device, a", may be turned outward, so as to allow the arm a to be turned back away from the stitching-point. The presser-shank O, atits lower end,is provided with a presser-foot, I), attached thereto in usual manner, for cording, said foot being provided with aneedle'hole, b and be ing attached to the said shank by a screw, 1),

a as is usual.

- livery end of the corder.

The throat-plate c, or the plate surrounding or cooperating with the feed and the presser-foot and the needle, is shown as cut away, recessed, or sunken, as at c, from a point just in front of the needle-hole 0 toward the operator, to receive in it not only the under ply of material, but also part of the de- The surface of the recessed or sunken part c of the platec serves to support the under ply of material in front of the needle-hole at a lower level than at the throat-plate immediately about the needlehole, the inclined portion or surface d of the throat-plate acting to bend the under ply of the. material upward just as the upper ply is bent downward by the presser-foot.

We do not desire to limit our invention to the exact construction of the plate 0, or to making the plate having the recess a and the incline d as an integral part of the throatplate 0, although such construction is preferred.

In Figs. 6 and 7, 1) represents the upper and p the lower ply, and p the cording between the parallel rows of stitches 19 In Fig. 6 the ends of the two plies come even one with the other, because the under ply is bent upward by the inclined portion d of the throat c as much as the upper ply is thrown down by the inclined toe of the presser-foot; but in Fig. 7 the upper ply is shortened by being bent more than the under ply.

The arrows in Figs. 6 and 7 designate the direction of the feed.

We claim- 1. A sewing-machine throat-plate havingin its upper surface an open recessed or sunken portion, 0, for the reception of the corderarm, said recessed portion terminating at its rear end, in front of the needle-hole, in an inclined portion, d, extending upward to the level of the main portion of the upper surface of said plate, combined with a corder to enter said recess, whereby the under ply of material to be corded may be bent upward in a manner to correspond with the downward bend of the upper ply, substantially as set forth.

2. Asewingmachine throat-plate having in its upper surface an open recessed or sunken portion, a, for the reception of the corderarm, said recessed portion terminating at its rear end, in front of the needle-hole, in an inclined portion, d, extending upward to the level of the main portion of the upper surface of said plate, combined with a cord-guide arranged in said recessed portion, and with a suitable presser-foot, substantially as set forth.

3. The throat-plate 0, having in its upper side the open recessed or sunken portion 0 terminating rearwardly, in front of the needlehole, in the curved or inclined portion d, and having at its side the curved or inclined portion (1, substantially as set fort-h. j

4. The throat-plate 0, having in itsupper surface the open recess 0 terminating at its rear end, in front of the needle-hole, in the curved or inclined portion d, combined. with the pivoted corderarm a, carrying the cordguide a, arranged in said recess, the adjusting devices or screws a a for said arm, and the block or plate to which the said arm is pivoted, substantially as set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

WILLIAM F. BROOKS. ALEXANDER V. ABEROROMBIE. STANLEY W. HOUGHTON.

\Vitnesses for Brooks and Abercroi'nbie;

ISAAC HOLDEN, A. WV. HURD. Witnesses for S. W. Houghton: MYRON W. SHERMAN, J. H. BAILEY.

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