US 1443456 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Jan. 30, 1923. I 1,443,456. l M. BRETSCHNEIDER.
EMBROIDERY NEEDLE FOR USE IN CONNECTION WITH MULTINEEDLE EMBROIDERY MACHINES. FILED JUNE15, 1922.
Multineedle. Embroidery l Iachines 1 EMBROIDERY NEEDLEFOR IN Patented Jan. 363, $923.3. i
UNHTED STATES MAXBBETSCHNEIDER, OE PLAUEN, GERMANY.
Application filed'iiune 15, 1922. Serial No. 568,542.
[0 all to from it may concern:
Be it known thatl, MAX Bnnrsormnrnnn', a citizen of the German Republic, and a resident of Plauen, Saxony, Germany, have invented a new and useful Iniproved Embroidery Needle for Use in Connection with (for which I have filed application in Germany March (5, 1920), of which the following is a specification.
This invention relates to longitudinally slotted embroidery needles intended for the working of a beaded embroidery thread on a multi-needle embroidery machine. Working such a thread on such a machine by such a needleis at present effected in such a manner thaton the return motion of the needle a dead loop of the embroidery thread is drawn intothe rear endof the slot, after which the front portion of that loop is automatically removed fromthe eye, whereas the rear portion of the same is threaded into it. The manner in which the slot terminates into the eye of the needle is of pre-eminent importance for the proper functioning of the machine. a First of all, care must be taken that the thread does not leave the eye at the commencement of the forward motion of the needle'or'at the formation of the loop, and does not glide back in the slot, because this gives rise to faulty stitches. That occurs if, the slot is made to terminate into the eye at the front end ofthis latter without anyprovisions against the. thread getting back into the slot. To obviate such an occurrence the thin intern'iediate tongue provided between the slot and the rear end of the eye has been made elastic and bent against the opposite wall of the slot, but then the thread when entering into the eye is bound to bend back that tongue a little which diminishes its durability by reason of the friction produced and is also adverse to the employment of fine embroidery threads. It is to be borne in mind that at each stitch two portions of the thread must pass through the narrowed mouth of the slot at the eye. It is,-therefore, unavoidable that it several stitches closely follow each.
other the thread portions concerned are weakened in the narrow mouth of the slot and the thread is exposed to the danger of breaking which takes place especially if the tongue has become worn oii' and its edges sharpened which act like a knife with respect to the shuttle race.
CONNECTION VfITI-I nominnnnnn narenornnnv MACHINES. Y I 4 blade. This evil is still increased if the intermediate tongue is allowed'to extend into a trough-shaped. cavitylof the opposite wall,
of the slot.
Now, in order to do away with the various drawbacks experienced with the above-mentioned known embroidery needles, especially to make the thread enter into the eye with the least friction possible but preventing it from getting back into the slot, 1 make the v slot terminate into the eye in open state and in oblique position, as fullyidescribed hereinafter and shown in, the accompanying drawing in which oneform of construction is illustrated by way of example. "In the drawing Fig. 1 shows that side of the needle which is directed towards the shuttle path.
Fig. 2 shows that side of the needle 4 along which the shuttle passes. Fig. 3
a longitudinal section on line AA of v 11g. 'i is a longitudinal section Fig. on line BB of "Fig. 1. Fig.5 is a trans verse section on line C tl of Fig. 1. Fig. 5 is a transverse section on line D.D' of Fig. 1. Fig. 7 is a transverse section on line E-E of Fig. 1. Fig. 8 is a transverse section on line FF of .Fig. 1. And Fig. 9 is a. somewhat diagrammatic.representation (drawn on a smallm scale) which shows the position of the oblique slot-end Concerning the main parts or portions of the needle, there are to be distinguished the shaft 1, the point 2, the. tongue 3, and the rear end 4 which, preferably, is bent at its place of junction with the shaft and serves for attaching this latter to the socalled needle-bar. The tongue 3 is sepa rated from. the shaftl by a longitudinal slot 5. the front end of which terminates laterally into the eye 6 by means of a trans verse slot 7. Owingto this arrangement and configuration of the portions concerned I a a small tongue 8 is formed between the eye 0 and the slot 53. Now, conformably with the present 111V61ltl()1'l,'i1l16 transverse slot 7 is to lie obliquely with respect to the axis of the eye 6 (Figs. land 4) .so that ittermi-' .nates into the eye on one side of the needle also the tongue 8 forms a portion.
eyeG (Fig. 6) and forms a portion of the Wall of the same, viz, of that wall, oi" which Owlng 1 to this configuration .ot' the slot 5- between tongue 8.
the tongues and 8. a thread threadedinto the eye cannot possibly leave this latter,
that is to say, get back into the slot 5 it it is held fast on that side of the needle where the slot 5 terminates at the front end of the eye, and. ismoved in a circular path round the axis of the eye atthe opposite s de or theneedle, This circumstance renders pos-' sible a reliable work with the novel needle, it being presupposed that it is uoperly clamped to the needle her of the embroidery This is the case it that side or theneedle at which the slot 5 terminates into. the front end at the eye is directed towards theshuttle race, as shown in Fig. 9, because on. this side the thread 10 during the formation of the loop, is prevented by the usual needle' channel from making any The main portion of the needle has, preterably y en -.approximately square shaped transverse section, as. shown in F gs. 6-8, butxthe -point'must have a circular section,
as in Fig. 5. The, shaft has a long longitudinal groove l3which liesin the plane of the eye 6Hand communicates with this latter, and-the object'ojt which is to protect the thread Whilst passing through the fabric. The rear portion of the shaft 1 is reduced in thickness at the sideoLt the slot 5, and terms there an oblique surface 1 which serves as a guide-surface for the thread and diminishes the-friction to which the thread is subjected.
There has been desc *ibed in the'toregoing lines a needle the longitudinal slot of which terminates laterally into the eye, but this is not absohitely essential for carrying the invention into effect- ,1 wish it to be. understood that i do inot limit myself to such forms of construction, as other constructions of the invention are possible, the only condition being); that the mouth of the slot at the eye lies or stands obliquely with respect to the axis of the eye so that spontaneous untln'eading of the needle is impossible.
having: now described'my invention, what I claim as new and desire to secure by-Lettersv Patent of the United Stat-es is:
1. Aneedle for working a beaded thread .on a multi-needle embroidery machine, havmg a longitudinal slot terminating; in a transverse slot arran 'ed obliquely relative to. the axis of the needle and ofiwhich one In testimony whereof I afiiX my signature inpresence of two witnesses.
MAX BRETSCHNEIDER; Witnesses: l
W. A. KLEVER, (jnnnenn.