US476455A - Sewing-machine - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1. H. H. FEPEL. SEWING MACHINE.

Ploy 176,455.

Patented June '7, 18.92

fun mnunullullml Jef /M (No Model.) a Sheets'Sheet 2.

H. H. FEPEL.

SEWING MACHINE. No. 476,455. Patented June 2,1892.

UNITED ST "res PATENT Orricn.

HENRY H. FEFEL, OF NEW YORK, N. Y., ASSIGNOR TO THE UNION SPECIAL SEIVING MACHINE COMPANY, OF ILLINOIS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 476,455, dated June 7, 1892..

Application filed June 20, 1891. Serial No. 396,394. (No model.)

To all whmn it may concern.-

Be it known that I, HENRY I-I. FEFEL, of the city, county, and State of New York, have invented an Improvement in Sewing-Machines,

of which the following is a specification.

My invention relates to sewing-machines; and it consists of certain improvements which are fully set forth in the following specification, and are shown in the accompanying 1o drawings, which form a part thereof.

More particularly my invention relates to sewing-machines designed for forming an improved binding-stitch upon articles.

The object of my invention is to convert the ordinary zigzag machine-stitch simultaneously with its production into a whip-stitch similar in general appearances to the handmade whip-stitch. This binding-stitch and the method of producing it are fully set forth and claimed in another pending application of mine bearing even date with this; and the present invention relates to the mechanism by which that stitch may be produced. The machine converts an ordinary zigzag stitch formed upon the edge of one or more pieces of fabric into the appearance of awhip-stitch by means of an auxiliary tying-thread passed about the adjacent threads of successive zigzag stitches simultaneously while they are being passed over the edge of the fabric.

In the drawings, Figure l is a front elevation of an ordinary sewing-machine for forming the ordinary well-known zigzag stitch having my improvements applied thereto. Fig. 2 is a horizontal sectional view of the same through the line a so of Fig. 1. Fig. 3 is an end elevation of the arm for operating the mechanism which carriesthe auxiliary threadcarrier. Fig. at is a perspective view of a piece of fabric showing the needles in the act of forming the binding; and Figs. 5, 6, 7, and S are similar views showing successive steps in the formation of the stitches.

The particular construction of the machine for forming the zigzag stitch is immaterial to my invention and may be of any convenient construction. I prefer, however, a machine such as is set out in Letters Patent No. 4012M, granted to Lorenz Muther and R. G. \Voodward on the 9th dayof April, 1889, and in the drawings I have shown a machine of this general character. In this machine, A is the camshaft, carrying the cams for operating the needle Z) and looper c. D is the cloth-clamp. E is a cam operated from the shaft-A through suitable gearing for rocking the bell-crank or elbow-lever F once for every two vertical reciprocations of the needle-bar, which lever is connected by a linkf with the arm G of the beltcrank g. H is a link connecting the arm G and needle-guide 13. Through this bellcrank F, arm G, and links f and H the vibrating movements are imparted to the needleguide B during the reciprocation of the needlebar and the needle to produce azigzag stitch.

I will now describe the parts of my invention and the manner in which they are applied to the foregoing well-known mechanism.

I is an arm carried by the bell-crank or elbow-lever F, having a guide or slot 11.

J is a stud upon the plate of the sewingmachine, upon which is journaled a bellcrank K, having a short arm K, provided upon its end with a ball 71:, working in a sliding socket L. The sliding socket L is guided 75 in the slot i of the arm I. Secured to the other arm K of the bell-crank K is a threadcarrier (Z, which carries the auxiliary tyingthread which is led to it from the guides. The rocking of the bell-crank or elbow-lever F through the action of the cam E will move the arm I, rocking the bell-crank K, and reciprocating the thread-carrier (Z. The arm K which carries the carrier (Z, is longer than the arm K, which receives motion from the lever F, so that the thread-carrier (Z is moved a greater distance than the needle Z2 is vibrated and more rapidly. By this mechanism the carrier (Z is operated synchronously with the vibration of the needle-guide l3,both the bell-crank K, which carries the threadcarrier (Z, and the needle-guide 13 receiving their movements from the same cam through the bell-crank or elbowwlever F.

In Fig. 5 the needle and thread-carrier are shown in their relative positions at the commencement of the stitch, the needle Z) having just ascended above the edge of the fabric and the threadcarrier (Z being to the right of the needle Z), with its thread overthe thread 10: of the needle. The needle I) and the threadcarrier d are now vibrated to the left; the

threadcarrier passing to the left of the needle b and carrying its thread under the thread of the needle. In this position the needle I) descends through the fabric, forming a stitch over the thread of the carrier, as is shown in Fig. 6. The needle I) then rises and begins to move back to the right, the thread-carrier synchronously moving back at a more rapid rate, so as to bring its thread over the two threads of the zigzag stich, which diverge from the place where the needle Z) passed through the body of the fabric toward the edge thereof, as is shown in Fig. 7. The carrier (Z continues to move back to the right, so as to draw its thread under the thread of the needle Z), as is shown in Fig. 8. The thread I) then descends over the edge of the fabric and completes the zigzag stitch. The needle rises again and returns to the position shown in Fig. 5. The tension of the thread in the carrier (Z draws the two threads of the zigzag stitch together, as shown.

The terms right and -left are used to describe the movements of the needle and thread guide with reference to the relative positions thereof shown in the drawings. Thus with each lateral vibration of the needle Z) through the action of the needle-guide B in forming the zigzag stitch over the edge of the fabric the 'carrier (Z is reciprocated to the right and left of the needle Z), so that the tying-thread passes about the adjacent threads of successive stitches and draws them together in the manner shown in Fig. l. This movement of the carrier (Z is so timed with the vibration of the needle Z) that its thread is located upon one side of the thread of the needle 1) during one set of vertical reciprocations and upon the other side during the other set of vertical reciprocations. The tying-thread thus passes about the adjacent threads of successive stitches, as is shown in Fig. 4, and by its tension draws them together.

I have shown and described the invention as applied to overseaming or the formation of bindings. It will be understood, however, that it may be used when the needle I) during both of its vertical reciprocations (controlled by the lateral vibration of the guide B) passes through the body of the fabric. My invention is, however, particularly designed as a bindingstitch, so that the hand-whip stitch efiect may be economically and successfully obtained with machine-sewin g. The tying-thread may be drawn over upon the under side of the fabric so as to be concealed by simply pressing it over the edge of the fabric by hand.

As I have heretofore stated, I do not limit my invention to the particular form of sewing-machine for forming the zigzag stitch which is shown in the drawings, as it is ap' parent that my invention may be applied to any form of sewing-machine adapted to zigzag sewing; nor do I limit myself to the minor details of construction which have been shown, as it is apparent that they may be varied without departing from the invention.

IVhat I claim as new, and desire to secure by Letters Patent, is

1. In a sewing-machine, the combination, with a reciprocating needle-bar and its needle, of the needle-guide B, cam E, lever F, operated by the cam E, connections between the needle-guide B and lever F, whereby the needle-guide is vibrated laterally, thread-carrier (Z, having its end adjacent to the reciprocating needle, and connections between the lever F and the thread-carrier (Z, whereby the latter is vibrated synchronously with the needle-guide B and the needle-bar and needle guided therein.

2. In a sewing-machine, the combination, with the reciprocating needle-bar and its needle, of the needle-guide B, cam E, lever F, operated by said cam E, connections between the lever F and needle-guide, whereby it is vibrated laterally, a bell-crank lever having one arm longer than the other, the threadcarrier (Z, carried by the longer arm of the bell-crank lever, and connections between the shorter arm of the bell-crank lever and the lever F, whereby lateral vibrations are imparted to the needle-guide B and carrier (Z synchronously and the carrier (Z is vibrated a greater distance than the needle, so as to move successively to the right and left thereof.

3. In a sewing-machine, the combination, with the reciprocating needle-baranditsneedie, of the needle-guide B, cam E, lever F, operated by the cam E, connections between the lever F and needle-guide B, wherebyit is vibrated laterally, a bell-crank K, journaled upon the base-plate, a thread-carrier (Z, carri ed by the bell-crank K and having its threadcarrying end adjacent to the needle, and a connection between the lever F and bell-cran k K, whereby the latter is rocked synchronously with the vibration of the lever F to vibrate the thread-carrier (Z.

4. In a sewing-machine, the combination, with a reciprocating needle bar and needle, of a vibrating needle-guide B, a cam E, a lever F, operated by the cam E, connections between the lever F and needle-guide B, a bell-crank K, journaled upon the base-plate of the machine, a threadcarrier (Z, carried by one arm of the bell-crank K, a depending arm carried by the lever F and having a slot 1', and a ball 76, carried in the end of the other arm of the bell-crank K, working in the slot i of the arm I.

In testimony of which invention I have hereunto set my hand.

- HENRY ll. FEFEL.

Witnesses:

JOHN H. HOWELL, JOHN J. SLATER.

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