US260027A - Sewing-machine - Google Patents

Description

(No Model.) 2 sheets-:sheet 2.

J. s. HOSMER.

SEWING MACHINE.

No. 260,027. Patented June 27, 1882.

nya

part of this specification.

UNITED STATES PATENT OFFICE.

JAMES S. HOSMER, OF GLOVERSVILLE,'NEW YORK.

' SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 260,027, dated June 27, i1882. Application filed March 9, 1881. (No model.)

To all whom it may concern Be it known that I, JAMES S. HOSMER, of Gloversville,Fulton county, State ofN ew York, have invented certain Improvements in Sewin g-Machines, of which the following is a full, clear, and exact description, reference being had to lthe accompanying drawings, forming My invention consists in the combination, with the device constitutingthe stitch-making mechanism of an over-edge-stitch sewing-mai chine, of a foot carrying a toe, and constructed as hereinafter particularly described, and arranged in rela-tion to the devices of lsaid stitchmaking mechanism, as hereinafter specified,

' and for the purposes set forth.

Figure 1 is a view in perspective of a portion of an over-stitch sewing-machine having a loop-taker as one of the elements of the stitchmakin g mechanism, and embodying my invention. Fig. 2 is a sectional view, looking downl ward, on the line x x, Fig. 1, the upper feed# rolls being removed. Fig. 3 is a side elevation, in detail, of the feed-rolls, needle, looptaker, and my improved foot. Fig. 4 is a crosssection of the foot on the line ma, Fig. 3. Fig. 5 is a cross-section of the toe of the foot on the line y y, Fig. 3. v

The object of this invention is to overcome the difficulty experienced in over-edge-stitch sewing-machines in sewing a reed, wire, or cord upon the edge of a fabric, said fabric being stili or pliable, and the fastening-stitcher being taken more or less back from the edge ofthe fabric. This dificulty consists in the tendency of the fastening-thread, in being drawn over the edge of the fabric, to cause the fabric to roll upon itself or curl up under the track of the needle, thus producing an irregular and an imperfect seam, and also causing the wire, reed, or cord, which should be upon the edge of the fabric, to be twisted up on the face of the fabric, and to lie irregularly thereon. These reeds, cords, or wires are sewed upon the edges of various manufactured articlessuch as hat-sweats composed of eithera double or single thickness of pliable material, or upon bonnet-frames composed of a single thickness of stiff material, or upon the edge of knitted, woven, or felted fabrics, more or Iless 'stili' or pliable, and used either in single or double thickness; and it is frequently essential that l the fastening-stitches taken in the fabric should take into the same at same distance back from the edge to which the reed or cord is attached, and this is specially true in regard to knitted or lightly-woven fabrics. It is to meet all is designed.

In Fig. 1 is shown a single-thread overstitch sewing-machine containing improveto one William A. Polmateer on November 23,1875, No. 170,390, and'on February 20, 1877, No. 187,479, and a description in detail of all the mechanism and devices of said machine may be found in said Letters Patent. I shall only describe herein such parts as are necessary to the comprehension of the present invention.

In this machine the stitch-making mechanism includes as one of its elemental' devices a loop-taker, although without altering the essential feature of this present invention the devices which I herein describe and claim as novel lnay be used in an over-stitch machine in which a shuttle is one of the elements o the stitch-making mechanism. v

chine shown consists of the needle A, which carries the single thread a, and which has a vertical reciprocatorymotion; the loop-taker B, which has an irregular combined reciprocatory and vibratory motion, and operates to take up the loop in the thread lformed on the needle below the fabric and carry the same up over the edge of the fabric and present it to be locked thereby in the next descent thereof 5 the lower feed-roller, C, which is pressed upward against the upperV dead-roller, C', and which has an intermittent rotary motion.

At D is shown my improved foot. This foot is preferablysecured to the machine by means of a leg, d, as shown. Thefoot is formed with the tapering toe, d', and it is placed just back of the point of contact of the feed-rollers and ward to somewhat beyond the line of the path of the needle and in such relation to the inner descent will pass between the side of the toe these requirements that my present invention The Stitch-making mechanism ofthe ma edge of the feed-rollers that the needle in its' ments for which Letters Patent were granted the needle on the upper side of the fabric, to

in line therewith, with the toe d reaching forf IOO and the said edge of the rollers, as shown in v Figs. 1 and'2. I preferably cut a fiat channel,

d2, through the heel of the foot, as seen plainly in the section in Fig. 4, and alongside thereof, and preferably communicating therewith, the cylindrical channel d3. Through the channel d2 may be passed the edge of the fabric to which the wire, reed, or cord is to be sewed, and through the channel al3 may be passed the said wire, reed, or cord. The edge ofthe fabric is thus advantageously presented to the feedrollers and the wire, reed, or cord to the edge of said fabric under the needle. These channels may be dispensed with, although they are of convenience, and the fabric be inserted directly between the feed-rollers in the first instance, while the wire, reed, or cord, in starting the seam, may be held to the edge of the fabric bytheoperator. Subsequently, and during the running of the seam, the wire, reed, or cord may be guided by hand to the edge of the fabric.

It is evident that in operating an over-sttch sewing-machine having my described foot and toe constructed and arranged in relation to the stitch-making mechanism as described, when the loop-taker B catches the loop made in the thread on the under side of the fabric and carries it up over the edge of the fabric the loop will pass over and around the point of the toe d', and while the needle is locking the loop in its next descent the entire strain on the thread Y will be borne by the toe d and none will come upon the edge of the fabric or across the line ofthe wire, reed, or cord, and as the fabric is fed along to present it for the next stitch the loop last locked will slip oi' from the tapering end of the toe, and the tension on the thread will then draw it to place. Thus all tendency to roll or curl up the edge of the fabric or to draw inwardly onto the top of the fabric the wire, reed, or cord is avoided, and the production of a perfect seam and the attaching of the wire,reed, or cord upon the true edge of the fabric are secured.

It is also evident that the stitches may be taken back some distance from the edge of thc fabric, or that a wire, cord, or reed may be secured upon a fabric by stitches thus taken, and the tendency of the thread to roll the fabric over upon itself or to draw the wire or cord from the edge will be prevented.

In over-edge-stitch sewing-machines, where the needle vibrates laterally, passing first through the fabric and then beyond the edge of the fabric successively, and a shuttle is employed to lock the stitch, my improved foot and toe may be employed wit-hout modification of their essential features, care being taken to have the toe in the lateral path of the needle, so that the strain on the thread made by the locking-shuttle when the needle has descended beyond the line of the edge of the fabric will be borne by said toe.

What I claim as my invention isl. In an over-edge-stitch sewing-machine, the combination, with the stitch-making mechanism, of the foot D, having the toe d, constructed, arranged, and placed in relation to the devices composing such stitch making mechanism as described, and for the purpose specified.

2. In an over-edge-stitch sewing-machine, the combination, with the stitch-making mechanism, of the foot D, having the toe df, and provided with the channels d2 and d3, all constructed, arranged, and placed in relation to the devices composing such stitch making mechanism as described, and for the purpose specified.

JAMES S. HOSMER.

Witnesses:

A. S. Frrcn, A. Q. W. VERMILYA.

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