US151558A

US151558A - Improvement in the modes of machine-sewing

Info

Publication number: US151558A
Authority: US
Publication date: 1874-06-02
Anticipated expiration: 1891-06-02

Description

l. B. BLANCHARD.

Modes of Machine Sewing.

UNITED STATES PATENT OFFICE.

JOSEPH B. BLANCHARD, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO FREDERICK CURTIS, OF SAME PLACE.

Specification forming part of Letters Patent No IMPROVEMENT IN THE MODES OF MACHINE-SEWING.

. l5 1,558, dated June 2, 1874; application iiled August 22, 1872.

To all whom it may concern:

Be it known that I, J osErH BOND BLANCH- ARD, of Boston, Suffolk county, Massachusetts, have invented a certain Method of Machine-Sewing, ot' which the following is a specification This invention is an improved mode of machine-sewin g by the employment of two threads in conjunction with a two-cyed machine-needle, one eye for each thread, substantially as hereinafter specified.

The dra-wings accompanying this speeiiication represent, in elevation, a sewinganachine needle, A, formed with two eyes, c a, these eyes being placed in axial aligmnent with the body b ofthe needle, and situated a short distance asunder. These eyes are to be placed as close as possible together, leaving only so much metal between them as will sufiice to keep them separated, in order that each thread may have its distinct eye, while they all may be so 'close together as to bc readily taken by a single shuttle or hook, according to thekind of machine used.

In practical carrying out of my invention the several threads are to be inserted, one through each eye ot' the needle, and subsequently left to take care of themselves, as in ordinary sewinn'.

I have found in practice that each thread preserves at all times the position with respect to th'e next adjacent one that it tool: originally 5 hence, when colored threads areV employed for the purpose of embroidering,

' each color will maintain its proper position.

, Under my invention sewing progresses in all respects as satisfactorily as with one thread, and an ornamental or embroidering stitch in colors is obtained with no more care or trouble than ordinary sewinO.

My invention is susceptible of ready application to any of the existing sewing-machines in the market, all the change that is required being an additional spoolspindle for each additional thread. The same tension and takeup can be employed for all the threads, no change in this respect being necessary.

By means of my invention I obtain several important advantages over any former system of sewing: First, the hole made by the needle, in whatever material the puncture is made, is iilled entirely by the threads, and I am thus enabled to use a comparatively small needle to obtain a large and strong stitch. The value of this fact is more apparent in the sewing ot' leather, as it is one oi" the greatest evils, in the sewing et' this material by mainachinery, that the holes must be ot' such size as often to cut the stock, and weaken the parts, and in all cases to detract from the iinished appearance ot' the work.

In sewing` heretofore, the dii'iicnlty ot' using a thread sutliciently large to iilltheI needlehole has been found to consist with the eye ot' the needle. If an attempt is made to carry two or more threads in one eye an instant failure is the result.

Ela-berate experiments have convinced me that, by the employment otl a twoeyed needle in accordance with my invention, I am enabled to use such a quantity or' thread as will entirely iill any hole iliade by the needle; and therefore I am enabled, as before stated, to either reduce the size of the needle and. avoid injury to the materia-l, as well as obtain a stitch equally as strong as any now laid, or to obtain, by the use of the present-sized needle, a much larger and stronger stitch than can now be obtained with it.

That I claim, and desire to secure by Letters Patent, is-

The herein-described-mode ot' machine-sewing, by the employment of two threadsin conjunction with a sin gie machine-needle provided with eyes, one for each thread, the same being used in a sewing-machine of otherwise ordinary or suitable construction, substantially in the manner and for the purposes set forth.

JOSEPH B. BLANCHARD.

Witnesses:

Ii. CUETrs, W. E. BOARDM AN.