US2178607A - Self-threading needle - Google Patents

Description

Nov, 7, 1939. o. J. RAINVILLE SELF-THREADING NEEDLE Filed July 27, 1937 3 r vu C YMM J: finial 171g Patented Nov. 7, 1939 SELF-THREADING NEEDLE dimer 3. Eainville, South Attlebore, Masa, assignor to E. Z. l. Needle 00., Providence, lit. 1., a corporation of Rhode Island Application July 27, 1937, Serial No. 156,017

Claims. (Cl. 112224) This invention relates to certain new and useful ing the overlapping arrangement of the thread improvements in self-threading needles. guide projections; and

The primary object of the invention is to pro- Figure 8 is a fragmentary plan View of another vide a needle of a self-threading character Whereform of needle wherein the thread guide projec- 5 in the needle maybe designed for either machine tions in the eye portion thereof are directed 5 or hand sewing, the pin or shank of the needle towards and terminate in spaced relation to each having the longitudinal side section thereof cut other. away and replaced by a resilient arm anchored Referring more in detail to the accompanying at one end to the needle shank for restoring the drawing and particularly to Figures 1 to 4, there 10 cross-sectional shape of the needle to its original is illustrated a hand sewing needle emb y 10 form with the free end of the arm adapted to be pin or h nk it wi h h p e r p n moved against the resiliency thereof away from end it and an eye portion l2 at the opposite end the shank of the needle for the introduction of a qu pp d o o st u o o the Self-threading thread into the eye portion of the needle shank. Characteristic.

A further object of the invention is to provide The y p rtion it of the needle shank ill is 15 aself-threading needle of the foregoing character cut ay at one Side thereof to provide ab Wherein t pin or shank of t dl h a merit shoulders l3 and it, the shoulder i3 excut-away side portion replaced by a resiliently d n at right es to the ud al axis mounted arm that overlies thread guiding proof the shank ill while the shoulder l-L tapers as jections carried by the pin or shank with side wn in Figures 1 n 2 for p p presently 20 grooves in the shank through which the thread to p A p f proj c of Substantially may be t i for positioning th th i triangular formation as shown at 45 and it rises teriorly of the shank of the needle so that the from the y S de po t on of the needle, the least resistance is ofiered to the needle when bases 0f the j ons 5 a d 55 p c y passing through a piece of fabric or the like. tending from-the Shoulders l3 and t4 and being 2.5

w t t above and other gbjects in View t t rectangular triangles with the straight side ll will become apparent as the nature of the in- Set inwardly of the pp t sides f h y p r- Vention is better understood, the same consists tion 52 While the yp u 93 of e c p jecin the novel form, combination and arrangement tion 55 and it extends al y of t ye 80 of parts hereinafter more fully described, shown Dortlon 52 in Spaced a d ove pp relation,

in the accompanying drawing and claimed the arrangement and configuration of the pro- In the drawing: jections l5 and it forming side grooves 59 and a Figure 1 is a side elevational view of a hand diagonal groove 25! therebetween. A side arm 2i sewing needle constructed in accordance with the is Set into the y p ion of the shank ill present invention; to overlie the thread guide projections l5 and 35 Figure 2 is a fragmentary side elevational view Wlth the end 22 0f the arm 24 Welded otherof the needle shown in Figure 1, taken f wise anchored to the abutment shoulder iii, the another Side theregf; arm 25 being resilient and having the other end Figure 3 is an enlarged fragmentary elevational ,tapered as at 23 and shghfly Spaced from view of the eye end of the needle shown in Figures g ig g fi tghprovlde entrance 40 1 and 2, with the resilient arm removed to illusor sewmg o e eye porno d2 of the needle. tmte the Overlappmg thread gulde proJectlons m To thread a needle, the thread is inserted beihslir the eye p t of the neefila tween the tapered end 23 of the resilient arm 2! Flgure 4. 1s a cross-sectional view taken on line and the inclined Shoulder M of the cut away 4 t of Figure portion of the needle shank, the resiliency of the 5 Figure 5 is a side elevatio View of a sewlng arm 2i permitting the thread to be moved between machine needl equipped with the self-threading t arm and the projections 55 and m for entry attachment; into the diagonal groove 28, the looped portions Figure 6 is another side elevational View of the of the thread then occupying side grooves lZ-l so 50 form of sewing mach ne eed Shown in F u e 5; that the least resistance is offered to the needle in Figure 'l is a fragmentary elevational view of passage through a piece of fabric or the like. the eye end of the sewing machine needle with the In the form of invention shown in Figures 5 resilient arm removed to illustrate the thread to 7, the needle lim is of the sewing machine type, guide projections of the needle eye and illustrathaving a pointed end Ma and a head ill) for 55 mounting in a socket. The shank l lla is longitudinally cut-away at one side thereof substantially from the point Ila to the head lib providing abutment shoulders 13a and Ma, a resilient arm Zla overlying the cut-away portion and welded or otherwise secured at one end thereof to the abutment shoulder I3a. The cut-out portion of the shank Illa includes a, side groove l9a that extends substantially the entire length of the shank between the shoulders I3a and Ma and a second side groove I9b extending a short distance from the abutment l3a along the shank Illa. The cut-away portion of the shank Illa that underlies the resilient arm Zla adjacent the point Ha has triangular projections l5a and IBa rising therefrom, similar to the thread guide projections l5 and I6 as shown in Figure 3, the projections I51; and Ilia overlapping each other as shown in Figure '7 to provide a diagonal thread guide channel 20a. A thread is introduced into the guide channel 20a by inserting the same under the bevelled end 23a of the side arm Ma and moving the thread along the needle shank for reception in the diagonal guide 20a, a portion of the thread fed from a spool on the head of the machine is trained through the side groove l9a, while the other end of the thread extending through the diagonal groove 20a is fed by the point Ila to a piece of fabric or other material to be sewed.

In each of the forms of invention described, the thread guide projections overlap each other to provide a diagonal thread guide channel groove, but in Figure 8 which shows a modified construction of the thread guide, the thread guide blocks I5b and I8!) that rise from the cut-away portion of the needle shank lllb are of triangular shape with the pointed ends thereof terminating in spaced relation to each other on the longitudinal ax s of the needle to provide a transverse thread uide 2017.

As shown in Figures 3, '7 and 8 the pointed ends of the triangular projections 16, Ha and I519 are undercut as at 25 at the points thereof to cause the thread to lie more closely to the body of the needle.

From the above detaileddescription of the invention, it is believed that the construction and use thereof will at once be apparent and while there are herein shown and described the preferred embodiments of the invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What is claimed is:

1. In a self-threading needle, a needle shank having a cut-away portion at one side, the needle having an eye portion including raised thread guide projections carried by the cut-away portion, said projections being integral with the cutaway portion and having pointed ends disposed inwardly of the opposite sides of the needle shank and overlapping each other to provide a thread guide groove extending at an acute angle to the longitudinal axis of the needle shank and a resilient arm overlying the cut-away portion and raised projections and engaged with said projections.

2. In a self-threading needle, a needle shank having a cut-away portion at one side, the needle having an eye portion including raised thread guide projections carried by and integral with the cut-away portion and a resilient arm overlying the cut-away portion and raised projections, said projections being rectangular triangles with the inclined sides and apices being laterally disposed with the apices overlapping each other and spaced apart to form a diagonal thread guide groove.

3. In a self-threading needle, a needle shank having a cut-away portion at one side, the needle having an eye portion including raised thread guide projections carried by and integral with the cut-away portion, a resilient arm overlying the cut-away portion and raised projections, said projections being rectangular triangles with the inclined sides and apices being laterally disposed with the apices overlapping each other and spaced apart to form a diagonal thread guide groove, and said arm being anchored to the shank at one end.

4. In a self-threading needle, a needle shank having a cut-away portion at one side, the needle having an eye portion including raised thread guide projections carried by and integral with the cut-away portion with adjacent portions of the projections laterally disposed and overlapping each other to provide a thread guide eye extending at an acute angle to the longitudinal axis of the needle and a resilient arm overlying the cut-away portion and raised projections and. engaged with said projections, said needle being of the sewing machine type with the thread guide projections adjacent the pointed end thereof.

5. In a self-threading needle, a needle shank having a cut-away portion at one side, the needle having an eye portion including raised thread guide projections carried by and integral with the cut-away portion with adjacent portions of the projections laterally disposed and overlapping each other to provide a thread guide eye extending at an acute angle to the longitudinal axis of the needle, a resilient arm overlying the cut-away portion and raised projections and engaged with said projections, and said shank having a thread guide groove extending longitudinally thereof for a portion of its length.

OMER J. RAINVILLE.

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