US40622A - Improvement in sewing-machines - Google Patents

Description

W. D. HIE'YER. SEWING MACHINE.

No. 40,622. Patented Nov. 17, 1863.

UNITED STATES lPATENT OFFICE.

w. n. HEYER, orennw ORLEANS, LOUISIANA.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 410,622, dated November 17, 1863.

o all whom it may concern Be it known that I, W. D. HEYER, of th city of New Orleans, in the parish, ot Orleans and State of Louisiana, have invented a new and Im proved Sewing-Machine; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification, in whit-h- Figure 1 is a vertical section of the machine, 'full size, taken at right angles to the line of sewing. Fig. 2 isa vertical section ofthe same, taken directly in the lille of sewing. Fig. 3 is a top View of the same. Fig. 4 represents a plan of a single piece of steel or other metal' plate, of which the entire machine is composed.

Similar letters and numbers of reference indcate corresponding parts in the several iigures.

This invention consists in a novel and very simple arrangement of the parts of a sewingmachine for making a chain-stitch with a sin'- gle thread, whereby the whole are enabled to be made entirely of one piece of metal.

1t also consists in the manufacture of the cloth-holding device, the feeding device, the needlehar, and the needle, also, if desired, of a single piece of steel or other metal, or, of two or more pieces united in such manner as to be equivalent to a single piece.

To enable others skilled in the art to make and use myv invention, I will proceed to describe its construction andoperation. s

A, Fig. 4, represents a long, narrow, flat piece of steel-plate, having one end cut out and finished by grinding or otherwise, and perforated at 5 to form the needle a', and having projecting from one side of it, about midway between the head of they needleand the other' end, a tongue, b, which is forked and sharp pointed at its extremity. v Opposite the center of this tongue b there is in the main portion of the plate a circular hole, c, for the passage of the are several holes, 7 7, through which the thread is rove to give it the necessary tension. To

form this piece into a sewing-machine it is bent in the lines h jk Z m nto the form shown in Fig. 2. The bending in the lines,x ht'jk -brings the terminal portion g h close under the portion lc l, with the holefopposite to the hole c, land the said portion g L is thusmade to serve as the clamping device, between which andthe portion la l the cloth is held to be sewed. The bending in the lines l, in, and n and the curva tureof the portion Z m forms the portion m n into the needle-bar, and the'portion Z'm into a spring connecting the needle-bar with the portion k l, the normal condition of such spring being such as to keep the needle-bar elevated sufficiently to keep the point of the needle at a short distance above the portion la l. The arm b is also bent in the form shown in Fig.

2, so that its points will enter the slots dd' and penetrate the cloth, which is held between the portion lc l and the clamping device g h. The machine is now complete.

To preparethemachinetbrsewing,thethread Y and alternately pressing down the needle-arm i and allowing it to rise. As the needle-bar is depressed, the inclined edge S, Fig. 2, comes into contact with the feeder b, and pushes the latter back over the cloth, an-d, as the needle rises from the cloth, the elasticity of the feeder causes it to move forward in the direction of the arrow shown in Figs. 2 and 3, and move forward thecloth. rlheneedle carriesthe thread double through the cloth, and, asit rises, leaves it protruding through the under side thereof in the form of a loop, which, by being drawn forward, with the cloth between the latter and the clamping device h g, as the feed movement ltakes place, is brought to a position for the needle to pass through it in its next descent, and in this way a chain-stitch is produced.

The needle, instead of being made of the same piece with the other part of the machine,

` may be `made of a separate piece, and rigidly e secured to the needle-arm in any suitable manneI. The other parts may be also made of two or more' separate pieces; but I propose in all cases to connecttheln in suchlnanner that the 2. lvvlakingz:thecloth-holding?` device, the feedin g device, the needle-bar', and the needle, also, if desired, of one piece of metal, or of two or more pieces united in such manner as to be equivalent to one piece, substantially as herein specified.

W. D. HEYER.

Witnesses:

HYMAN SMITH, C. E. MONTAMAT.

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