US1131854A - Sewing-machine needle. - Google Patents

Description

G. E. MYERS. SEWING MACHINE NEEDLE. APPLICATION FILED OCT. 7. 1912.

1,131,854, Patented Mar.16,1915.

HE NORRIS PETERS 60.. FHuTc-UTHQ, WASHING roN, D. C

SEW'ING-MACHINE NEEDLE.

Specification of Letters IEatent.

Patented Mar. 16, 1915.

Application filed October 7, 1912. Serial No. 724,362.

T all whom it may concern Be itknown that I, CHARLES E. citizen of the United States, and a resident of the city of Lebanon, in the county of St. Clair and State of Illinois, have invented a new and useful Improvement in Sewing-Machine Needles, of which the follow ing is a specification.

This invention relates to sewing machine needles and more particularly to needles for sewing heavy material such as leather and the like.

It has for its principal objects to facilitate making a straight line of stitches of regular formation; to prevent cutting and breaking of the thread; and to attain certain other advantages which will hereinafter more fully appear.

The invention consists in the construction and arrangement of a needle substantially as hereinafter described and claimed.

In the accompanying drawing which forms part of this specification and wherein like symbols refer to like parts whereever they occur, Figure l is a side View of a curved needle on an enlarged scale, showing an adaptation of the invention; Fig. 2 is a similar view looking at the opposite side of the needle; Fig. 3 is a longitudinal section looking in the same direction as in Fig. 1; Fig. 4 is a similar view looking in the opposite direction; Fig. 5 is a front view; Fig. 6 is a rear view; Fig. 7 is a plan view of a piece of work sewed by an ordinary needle, the eye of the needle being shown in cross-section; Fig. 8 is a similar view of a piece of work sewed by a needle constructed and arranged according to the present invention; Fig. 9 is a side view of a modification of a needle embodying the present invention; Fig. 10 is a longitudinal section of the modification; Fig. 11 is a view of the inner side of the modification. Fig. 12 is a cross-section through the eye of the needle shown in Figs. 1 to 6 and 9, 10 and 11; and Fig. 13 is a cross-section through the cut away portion above the eye of the needle shown in Figs. 9, 10 and 11.

Referring first more particularly to Figs. 1 to 6, inclusive, the arcuate needle therein shown has a pointed end 1, adjacent to which is an eye 2. Onthe outer or convex side of the needle is a groove 3 which extends from the eye to a point in proximity to the shank portion 4. The needle is fur- MYnns, at

their provided with a notch or recess 5 on its inner side in the region of the eye 2 and at the side of the eye away from which the work travels. The half segment of the needle which is removed to form the recess 5 subtends an angle such that the recess is approximately quadrant shape in cross-see tion. The portion of the needle at the upper end of the eye and recess 5 is rounded and sloped off, as at 6; and the portion at the lower end is likewise shaped, as at 7.

The needle, as shown, is adapted for a machine having a rocking needle carrier. A machine of such type is shown in Patent No. 1,016,898; granted to Savignac and Myers on February 6, 1912; and the awl is also mounted on the rocking carrier thereof so as to feed the work as well. as puncture it for the passage of the needle therethrough.

The machine is particularly adapted for making a loop-locked stitch, the needle carrying the stitching thread proper and the locking thread being carried by a loop forming and laying device.

The stitching thread is taken from some suitable source of supply and brought down over a pulley or guide to the groove 3 of the needle and threaded through the eye 2. The portion of the thread which is drawn through the eye of the needle is suitably held while the needle is traveling through the work to take a loop of the thread for the first stitch. For each subsequent stitch the thread is held by being secured in the preceding stitch. The stitches are set by a suitable take-up device.

It has been found in actual practice that an ordinary needle causes the stitches to lie in a zig-zag or saw-tooth line, substantially as shown in Fig. 7. This kind of stitching, while tight at first, works somewhat loose after a time, because during wear of the stitched material the thread between the respective punctures tends to pull in a straight inc and the two strands of the respective loops which originally overlap in the punctures in planes transverse to the line of stitches are apt to work around until the stitches are in a substantially straight line. By the use of the needle herein set forth, the stitches are formed originally in a straightline substantially as shown in Fig. 8, and may be drawn as tight as is desired.

l/Vhen the needle starts through the work the cutaway or notched portion 5 allows the adjacent portion of the thread between the puncture and the preceding stitch to pull in nearly a straight line, and as the portion of the needle at the upper end of the eye 2 and notch 5 is rounded or sloped off, as at 6, the body of the needle further wedges and forces the thread around so that the thread is pulled more nearly in a straight line. Then as the take-up device pulls the needle thread to set the stitch during the up stroke of the needle, the thread constituting the stitch just formed is drawn tight and in a line substantially straight through the centers of the punctures.

The thread which lies in the groove 3 is never wedged or pressed tight against the side of the puncture while the needle is moving through the work, and, therefore, that portion of the thread which is in the loop is readily drawn over so as to be on a line through the middle of the punctures by the needle as it descends for the next stitch.

A modification of the needle is shown in Figs. 9 to 11, inclusive. This needle has a groove 8 on its inner side which extends upward from the eye 2 for a considerable distance, but is of shorter length than the groove 3; and it is cutaway or recessed, as at 5 at the side of the groove 8 away from which the work travels, and in continuation of the cutaway portion 5 of the first described needle shown in Figs. 1 to 6, inclusive. It is also tapered oil, as at 6*" and 7. Obviously, the needle may be straight instead of curved, and it admits of considerable modification without departing from the invention. Therefore, Ido not wish to be limited to the'constructions and arrangements shown.

Vi hat I claim is:

1. A sewing machine needle having an eye near its end, said eye extending through the needle transversely to the direction in which the work travels; the needle also having a recess extending lengthwise of the needle in the region of its eye, a rib alongside the eye forming the front wall of said recess, and the inner wall of said recess being substantially onthe diameter of the needle parallel to the direction in which the work travels, said recess extending sidewise from the eye toward the side of the needle away from which the work travels, whereby said needle is adapted to sew a straight line of stitches.

2. A sewing machine needle having an eye near its end, said eye extending through the needle transversely to the direction in which the work travels; the needle also having a recess in the region of its eye, said recess being quadrant shape and extending circumferentially from approximately the Copies middle of one side of the needle which is parallel to the direction in which the work travels, to approximately the middle of the side away from which the Work travels, whereby the thread can leave said eye substantially in line with the line of stitches being sewed. V

3. A sewing machine needle having an eye near its lower end, said eye extending through the needle transversely to the direction in which the work travels; the needle also having a groove in one of its sides which is parallel to the direction in which the work travels, said groove extending longitudinally upward from said eye; the needle also having a longitudinally elongated recess in the region of its eye and in its side opposite to that in which is said longitudinal groove, said recess extending laterally from the eye to the side of the needle away from which the work travels whereby a longitudinal rib is left alongside said eye opposlte said recess.

1. A sewing machine needle having an eye near its lower end, said eye extending through the needle transversely to the direction in which the work travels; the needle also having an angular recess-extending longitudinally upward from its eye in one of its sides which is parallel to the direction in which the work travels, said recess extending circumferentially from approximately the middle of the above mentioned side to approximately the middle of the side of the needle away from which the work travels leaving a transverse rib alongside said eye and extending upwardly therefrom forming one side wall of said recess, and the edge of the other side wall of said recess being rounded off, whereby said needle is adapted to sew a straight line of stitches.

5. An arcuate sewing machine needle having an eye near its end, said eye extending through the needle in the plane of its axis; said needle having a groove 1n its outer curved side intersecting said eye and a recess in its inner curved side in the region of said eye, said recess being approximately quadrant shape and extending circumferentially from approximately the middle of saidinner curved side of the needle to approximately the middle of one of the straight sides thereof, the edge of the straight side bounding said recess being rounded off, whereby said needle is adapted to sew a straight line of stitches.

Signed at St. Louis, Missouri, this 1th day of October, 1912. 7

CHARLES E. MYERS;

Witnesses:

G. A. Pnnnmeron, PAULINE AMBnnG.

Commissioner of Patents,

Washington, D. G.

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