US91684A - Ptters - Google Patents

Description

G. STACKPOLE. Method 'of AttachingNeedles to Sewing Machines.

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GREENLEAF STACKPOLE, OF NEW YORK, N. Y., ASSIGNOR TO STACKPOLE SEWING- MACHINE COMPANY, OFBOSTON, MASSACHUSETTS.

Letters Patent No. 91,684, dated June 22, 1869; a-ntedated Jame 19, 1869..

HEPROVEMENT IN METHOD OI ATTACHING- NEEDLES m SEWING-MACHINESZ The Schedule referred. to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, GREENLEAF STACKPOLE, of New York city, in the county and State of New York, have invented a new and useful Improvement in the Method of Attaching Needles to Sewing-Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in so attaching a needle to the needle-bar of a sewing-machine, that it may be turned point upwards without detaching it from the needle-bar.

The object of my invention, in thus attaching the needle to sewing-machines, is to facilitate the threading, as it can be performed with much less trouble when the point of the needle is turned, so that the eye of the needle can be more easily seen. Also, said arrangement for tripping the needle is indispensable in a. machine where two seams are sewed at the same time. As it sometimes occurs that 'one thread is broken whilst sewing, and the machine takes several stitches with the working-needle, it is then necessary to turn the working-needle out of the work, and to go back with the needle in which the thread has been broken, and bring its line of stitches up even with the other, so as to carry both lines of stitches along perfectly. I

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

I make my needle-bar in the usual manner, except thatI drill a hole about three-sixteenths of an inch in diameter, crosswise, through its lower end. Through this hole I press the small end -of the piece which holds the needle, and is shown by Figure 3. Through this piece is a hole, snfficiently large for the largestshanked needle. A screw-thread is cut on the larger portion of the piece B, and between the hole for the needle and the shoulder which presses against the needle-bar. An eight-square nut, E, is screwed on,

and when the needle is put in its place, the nut E is turned until it presses against the side of the needle, to hold it in position. The opposite end of the piece which holds the needle is provided with a screwthread, upon which a thumb-nut is screwed: Said nut is reamed out sufliciently to leave a space for a spiral spring, F, that surrounds the smaller part of the pin B, and on which the nut H is screwed. One end of said spring presses on the inner head of the nut, while the other is pressed against the-needlebar, and this spring allows the pin B to play in the direction of its length, when required. A bisected view of the thumb-nut, with the spiral spring in itsplace, is shown by Figure 5. A steady-pin, on the side of the needle-bar, enters a hole in the inner shoulder. of the piece which holds the needle, and holds it in position.

If it is desired to turn the needle up, the thumb and finger should be pressed against the thumb-nut, pressing it towards the needle-bar, until the shoulder of the piece which holds the needle is pressed off of the steady-pin. It is then easily turned up at any angle required. Other holes may be made in the shoulder, to receive the steady-pin, and hold it in that position.

Figure 1 is a view of a needle-bar, with my device applied, and with a needle in position for work.

Figure 2 is a needle-bar, with my device applied, with a needle turned out of work.

What I claim as new,.and wish to secure by Letters Patent, is-

The within-described mode of securing the needle N to the needle-bar A, by means of pin B, nuts E H, and spring F, all as described, and so that the needle can be thrown out of work without detaching it from the needle-bar, for the purposes above set forth.

G. STACKPOLE.

Witnesses:

GEO. C. LAMBRIGHT, J. H. PHILLIPS. V

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