US261421A - Hemstitch attachment for sewing-machines - Google Patents

Description

(No Model.)

I G. W. BAKER. HEM STITCH ATTACHMENT FOE SEWING MACHINES.

No. 261,421. 7 7 Patented July 18, 1882 M m'vENTo ORNEYS- s, PETERQ. mwum mm Wuhing'an. r c

UNITED STATES PATENT OFFICE.

GEORGE W. BAKER, OF CLEVELAND, OHIO.

SPECIFICATION formingpart of letters Patent No. 261,421, dated July 18, 1882. Application filed May 5, 1882. (No model.)

To all whom it may concern:

Be it known that I, GEORGE W. BAKER, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Hemstitching Devices; andI do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to sewing-machine attachments, and more particularly to an attachmentfor producing whatis known asthe hemstitch,(shown in Figure5 ofthe drawings;) and it consists in the peculiar construction of the same, as will be hereinafter set forth and claimed.

- In the drawings, Fig. 1 is a view in elevation of my device, showing it attached to a sewing-machine, and the position it occupies when the needle is down. Fig. 2 is also a view in elevation of my device attached to a sewing-machine, showing its position when the needle is raised. Fig. 3 showsmy device in position just before the needle-bar enters the goods, and Fig.4 shows it after the needle has entered the goods. Fig. 5 is a plan view of two pieces of goods connected by means of the hemstitch.

A is a bracket or arm which is secured to and extends out from the presserfoot B. Pivotally secured to this bracket or arm A is a hook-shaped piece, 0, the lower end orlooper, a, of which is adapted to occupy a position just ahead of the needle D,"and preferably between the needle D and presser-foot B, as shown in Figs. 1 and 4, the presser-foot being cut away, as shown more plainly in Fig. 2, to allow the end a to enter.

Extending upward from the free end of the piece G is an arm, E, which is provided at its upper end with a hook or lug, b, with which the setscrew c engages, as shown in Fig. 2, and acts, as the needle is being raised, to pull the looper an outward and upward, as shown.

F is a spring, which rests on the upper side of the piece 0, and acts, when the needle is lowered, to cause the looper a to again resume the position shown in Figs. 1, 3, and 4.

The operation of my device is as follows: Two pieces of goods, at and e, between which it is desired to form the hemstitch, are placed each other. The presser-foot B is then lowered and the machine set in motion. Now, as the needle is descendingand before it has entered the cloth, the springF causes the looper a of the piece 0 to occupy the position shown in Fig. 3, in the rear of the thread, so that after the needle has entered the cloth, as shown in Figs. 1 and 4, a loop, f, is formed. The upward motion of the needle-bar causes the setscrew 0 to engage with the upper portion of the arm E, which acts to release the loopf from the looper a. The foregoing operation is repeated at every up and down motion of the needle, thus forming loops or loose stitches, which, when the pieces of goods (I and e are folded on themselves, as shown in Fig. 5, are drawn out and form the hemstitch.

I have described one manner of operating my device and causing the looper a, in conjunction with the needle, to form a loop; but any mechanism which will cause the end a to reciprocate, and thus form the loop, may be used.

. In order to adapt the end or looper ato form a longer or shorter loop, I provide a means of raising and lowering the said end. One manner is-shown in Fig. 3, which consists in forming the looper separate from the piece 0 and adjustably securing it to said piece by means of a set-screw, g, and a slot, h.

7 What I claim is- 1. The combination, with the needle and needle-bar of a sewing-machine, of an arm, A, a piece, G,-pivoted thereto, and provided with ahook, a,and means, substantially as described, for reciprocating said hook.

2. The combination, with the needle and needle-bar of a sewing-machine, of the arm A, set-screw 0, spring F, and pivoted piece G, having the loopera and lug b, substantially as set forth.

3. The combination, with the piece (3, of the adjustable end piece or looper, a, substantially as set forth.

In testimony whereof Ihave signed my name to this specification in the presence of two sub scribing witnesses.

GEORGE W. BAKER. Witnesses:

F. M. SANDERSON,

R. F. OURTI's's.

i under the needle with their right sides facing

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