US413647A

US413647A - Method of forming stitches

Info

Publication number: US413647A
Authority: US
Publication date: 1889-10-29
Anticipated expiration: 1906-10-29

Description

`making o'r formingA stitches.

UNITED STATES PATFNT OFFICE.

ALFRED A. ouMINc, oF HINGHAFLMASSACHUSFTTS.

METHOD koF FORNHNG sTlToHEs.

SPECIFICATION forming part of `Letters Patent No. 413,647, dated October 29,1889.

Application filed January 21, 1889. Serial No. 297,046. (No model.)

To all whom it mag/concern:

y Be it known that I', ALFRED A. CUMNG, of Hingham, in the county of Plymouth and State of Massachusetts, a citizen of the United States, have invented a new and useful Im-` provement in Methods of Forming Stitches, of which the following is a full, clear, and eX- act description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

The invention relates .to the method of In the formation of the stitch the bight or loop of one thread is passed througha hole in the matcrial or the sections which are to be united by the stitch and the loop enlarged or expanded upon the other or opposite side of the material, and through this loopV is carried by a suitable carrier another or under thread in thev form of a loop,'and at the same time or immediately following another or third thread, preferably smaller than the other two, is by a suitable carrier introduced through the loop of the second thread. The tWo under threads thus looped together are then drawn into the hole in the material or fabric y and the loops are turned on themselves, and

the loop of v thethird thread serves to fasten or lock the stitch formed by the first and second threads.

In the drawings, Figure 1 is a View representing the upper stitch carried through a hole in the material and a loop formed there- H on. Fig. 2 represents the loop of one of the under threads passed through the loop of the upper thread.` Fig. 3 represents vthe loop of the third thread passed through the loop of the under thread and one complete stitch,

and Figs. 4 and 5 vrepresent the invention applied to a Astitch using two upper threads in forming two seams, y

a represents the single or upper thread.

' It is fed downward through a hole a', formed in the material in which the stitch is seWed or the sections of which are to be united, and

a loop a2 formed, through which the loop a3 of :an under thread-b is carried.V The loop a4 of another under thread b', preferably smaller than the first and second threads, is then introduced through the loop a3 of the thread b.

' The lower thread h is then drawn upon the loop a4, the upper thread drawn back with the loops a3 a4 into the hole a', and the said loops will completely ll the center of the hole and bind closely therein.

It will be seen that the threads a and b are the principal or holding threads, and that the thread b is an auxiliary or locking thread, which is passed th rough the loop of the thread b and acts as a cross-bar or locking device in preventing the said loop from becoming disengaged from the loop of the thread a, and if at any time it is desired to separate the stitches thelocking-thread b may be Withdrawn and the loop a2 separated from the loop a3.

In Fig. 5 Ihave represented the invention as applied to a double line of stitches, there being two upper threads a, a single lower thread b, which passes through each loop of the two upper threads, and a single lockingthread b', the loop of which passes or enters the loop of the single under thread b. While I have" spoken of the threads as upper and under, I would not be understood as coniining myself to this location, as the threads which I have called under maybe upon the upperY side, and the other, which I have termed the upper,7 may be upon the under side of the fabric.

I do not confine myself to the form or arrangement of devices used for making the described stitch or practicing the process.

Having thus fully described my invention, I claim and desire to secure by Letters Patent of the United States- The method of forming a stitch which comprises passing a thread through a hole in the material or pieces to b e united, forming a loop upon the opposite side of said material; second, in passing into and through said loop a loop of another thread; third, in passing through the second loop a loop of still another or locking thread, and, fourth, drawing the loops of said threads into the hole of the material or fabric, substantially as described.

i ALFRED A. CUMING.

l Witnesses:

J. M. DoLAN, F. F. RAYMOND, 2d.