US2508887A - Thread supporting and tensioning attachment for embroidery machines - Google Patents

Description

May 23, 1950 y 1- C, ORRIGO 2,508,887

- THREAD SUPPORTING AND TENSIONING ATTACHMENT FOR EMBROIDERY MACHINES Filed May 25, 1947 INVENTOR. JosEPI-I C. ORRrGo ATTORNEY Patented May 23, 1950 THREAD SUPPORTING TEsIoM'NG ATTACHMENT FoR EMBROIDERY MA- CHINES Joseph rrgo',

Application Mai7 a3, 1947" 1 This invention relates to an attachment for Bcnnaz- `embroideringV machines and particularly to means for feeding an additional yarn thread tothe-stitching mechanism to permit the use of twin threads-by it. s One of the objects-,Lot the invention is tojprovidea -yarnispindle a tensioning guide, yand a spring loop, arranged kto guide the movement of theadditionalyarn thread tothe vertical tube through whichthe -yarn is `delivered to the stitching mechanism of the lBennaz machine. An ,ther YolDJ'eC/I'. Qf the Y.invention is to provide the combinationso that maximum service efliciency may -be obtained andbywhich theyarn thread will be kept-in acontrol-led path-,orf movement from :thezvarn Spool toV the delivery tube. neEardless` of; the heiehtinf :the stake-.Off Q f- 1 the yarn'thread from its supply spool. l' For -further Acomprehension of `theinvention and of the objects4 and advantages thereoirefer.- encejfwillfbe had' to the following d-escriptiongand accompanying Vdraw-ing, and to the-appended claims in I which the various;novel features of the invention aremore'particularly seij/-iorth.tA l A In the accompanying drawing forming a material `part of this disclosure:

Fig. 1 is a side elevation of a Bonnaz machine, showing the position of the-attachment for feeding the additional threadto the stitching mechanism thereof.

Fig. 2 is a perspective view of the yarn support and the tensioning guide.

Fig. 3 is a detail vertical sectionalview through thefscrew post which supports the' spring threadloopj s.

:i Fig.-.,4 .is...fa. vertica1 sectionalyiew .showing various size:yarnspoolsattachedon corresponding holding sleeves and support.

Fig. 5 is a perspective View of the various holding sleeves and support.

Referring to the drawing, which illustrates the practical embodiments of the invention, I0 designates the table of a Bonnaz machine, having a machine head II, and thread looper contained by the box or housing I2.

Above the table I0 a thread board I3 is supported on the vertical tube I4, and held against turning at any desired position by means of a set screw Ma. The lower end of the vertical tube I4 is adjustable in the base block I5, which is provided with a set screw I6 for clamping the tube I4 in any adjusted position. The lower end of the tube I4 extends through an opening formed in the table I0, so that thread may be delivered through the tube to the housing I2 of the thread looper under the table IIJ.

e wadminis.A (C1. :1ra-54X On the yarn board I3, a yarn cone support stud I1 -ismountedr-as'by its base; I8; and on this support=stud and'basefthe' cone I9 carrying-'the yarn I9 iszpositionedn The thread T of thisfspool is conducted through; the loop 20 -of the overhead 4springarm 2 I, which is also Vformedwith an additional thread loop 22, through whichf-the `thread T is conducted to pass into fthe-upper-fopen end of the-'vertical tube I4, yand-throughv the tube-'to thehousingl2 of the'thread looper. f-

In addition to the yarn cone support stud I1; there is' provided an additional yar-n spindle v23, for double yarn stitching, which is supported on the*v yarn board I3by means of its base-24. On this spindle, the sleeve 25 freely turns. The sleeve 25fisff0rmed with an integral disc 25a and a short tubular bottom extension-25". On this sleeve and disc, the yarn spool 26 is Vmounted to spin` on the spindle. `v`For different size yarn spools, addition-al sleeve attachments are provided, for example, for the -larger yarn spool 26 a larger sleeve 25 is-furnished. For a still diierent `yarn spool 26'!- a still different sleeve 25 is provided.- Y y f The yarn threadZIia is conducted from the spool 26 through the vertical space 21 ofthe tensioning 4guide-28. The spacef21 -is constituted by means of the vertical bars 28 and-.29. Y YThe lower ends of the vertical-bars are .secured tothe base block 3l, and this block is provided with a screw 32, which'isl-extendedthrough theA yarn board I3, and-clamped in place asby a wing nut 33, threaded thereon.

The base block 3| is adjustable so that the relation of the vertical bars 28 and-ZS-tothe baseV board I 2 mayy be varied to modify: the friction of `thesepbars.to the movement of the yarn thread.

LThe yerticalilength of the bars 28 and 2,9 equals the total length of the yarn spool or exceeds it.

The yarn thread 2lia after passing out of the space 21 enters the wire loop 34, which is supported on the spring wire post 35. The post 35 is secured to the yarn board I3, by means of a vertical screw 36 and the clamping nut 31, see Fig. 3. f

From the wire tensioning loop 34 the yarn thread 26a is conducted into the open upper end of the tube I4, and passes through the lower end of this tube under the table I0 and enters the housing I2 of the thread looper, where it is fed to the stitching mechanism, and used with the primary thread T.

My invention thus provides means for supplying an additional thread to the stitching mechanism of the Bonnaz machine, whereby an increased variety of work may be performed by the machine so equipped.

The attachment is easily made to a standard Bonnaz machine, and will continue to provide satisfactory service for the life of the machine and will not require more than the normal attention to keep itin good service.

It is to be understood that with this attachment the yarn willv unwind in. full view of the operator and as the end. of the yarn approaches, the operator can replace the unwound spool with a full spool, tie the ends together and pull thev new yarn through into operating positiom thereby eliminating the rethreading of the` machine with each new spool.

This device is attached on the Bonnaz machine table, directly in the back of the machine head. The bars 28 and 29 are used as an adiustable tension means Whereas the looped spring is provided merely to absorb the unevenness of pull caused by imperfectly wound yarns and the sudden. starts. of the4 machine.

While I have illustrated and described the preferred. embodiment of' my invention, it is to bel understood that I do not limit myself to the pre-., oise construction herein disclosedand the right is reservedto all' changes and modifications coming within. the scope of the invention as de- Iinedl in the. appended claims.

Having thus described my invention,v what I claim as new, and desire to secure by- United States- Letters Patent is:

l. In an embroideringmachine having4 a base, a head supported on said base, a vertical hooked needle reciprocably mounted in said head, a thread iooperdisposed beneath said base and a thread` spool mounting board supported above said head, that improvement which comprises` the provision of means for supporting a Yspool of` thread onA said board adjacent one` end thereof, guide means for guiding the thread from said spool to said thread looper, said guide means providing the support for said mounting board, thread tension means mounted on said board intermediate said guido means and said spool supporting means, said tension means comprising a pair of vertically extending bars for engaging opposite sides of said thread, means for adjusting the relative position of said bars with respect to the direction or the movement of said thread between said lbars whereby the tension on said threadl may be adjusted, and means for holding theY mounting board in a desired adjustedpositipn on said guide means with relation to the base.

2. In an embroidery machine having a base, a head supported on said base, a vertical hooked needle reoiprocably mounted in said head, a

thread looper disposed beneath said base and a thread spool mounting board supported above said head, that improvement which comprises the provision of means for supporting a spool of thread on said board adjacent one end thereof, guide means mounted on said board for guiding the thread from said Spool to said. thread, looper, and thread tension meansV mounted on said board intermediate said guide means and said spool supporting means, said tension means comprising a pair of opposed vertically extending bars fory engaging opposite sides of said thread, means for adjust-ing the relative position of said bars with respect to the direction of the movement of said. thread between said bars whereby the tension on said thread may be adjusted, and a second tension means positioned intermediate said rsttension means and said guide means, said second tension means comprising a resilient member having; one of its endsV secured to said board, the other end of said memberbeing provided witha loop to support the thread as said thread enters the guide means.

3. In an embroidery machine hav-ing a base, a headA supported on saidv base, a ver-tical hooked needle reciprocably mounted in said head, a thread looper disposed beneath said ibase and a thread spool mounting board supported above said head, that improvement which comprises the provision of means for supporting a spool of thread on said board adjacent one end thereof, guide means mounted o n said board for guiding the thread to said thread looper, and thread tensioningineans mounted on said board between said spool supporting means andv said guide means for guiding the thread from. saidV spool supporting means to said guide means, said tensioning means comprisingA a spring arm having one end mounted on said board and its other end disposed above said board, and spaced loops in the said other en d of said spring arm and disposed above said spool supporting means and said guide means and through which the thread passes in moving from said Spool supporting means to said guide means.

JosErH o. ORRIGO.

REFERENCES CITED The following references are of record, in the file of. this. patent:

UNITED S'1l4iI"r. S v lflPiTlfdTSl Number Name Date 171,365 Elliott Dec. 21, 1875 490,096 Bates Jan. 17, 1893 1,020,090 Gray Mar. 12, 1912 1,822,765 Dickey Sept. 8, 1931

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