US1516002A - Filled bobbin and mdthod of producing the same - Google Patents

Description

Nov. A18, 1924 M. CURRY FILLED BOBBIN AND METI IOD OF PRODUCING THE SAME Filed Nov. 224 1923 INVENTOR Mata/f (ai/LPM ATTORNEYS 4flatented fijju-NITED STATES PATENT OFFICE.

sunny, or scAasnALn, naw ronx. nsvsmnon ro 'ma AunnxcAN THREAD COMPANY, 0I' NEW YQRX, N. Y., A GOIBPQRATION 0F NEW JERSEY.

'mum-Bonnin AND mur-non 'or-.rnonucme 'rma snm,

Application mea november as, icas. serial m. 676,221.

To whom it may concern: Beit known that l, MALCOLM Otmar, a

citizen of the United States, residing at` Scarsdale, county of Westchester, State of New York, have invented. certain new. and useful Improvements in Filled Bobbins and Method of Producing the Same, of which the following is a full, clear, and exact ldescription. V10 1 My invention relates to sewingImachine 1 bobbins and method of producing the same and has for its object to produce a filled bobbin having end disks of very light weight secured directly to the wound mass so as to not interfere with the unwinding of the bobbin and yet so as to prevent the 1 round the thread from slipping down so as to surpost of the shuttle.

A further object is to produce a bobbin Awith end supports which will contain a greater length of thread than existing bobbins of the same dimensions.

A further object is to roduce a self contained bobbin the ends o which will be less liable to damage the sewing machine needle should it strike the ends than the ends of.

existing bobbins with metal shells.

A further object is to produce a bobbin with ends which will prevent endwise ab- -sov tion of atmospheric moisture bythe 'boliihin to a greater extent than existing bobbins. v

' A'further 'object is to produce abolcbin having transparent ends and attaining the aforesaid objects.I

.' '-The followingis a description of an embodiment of my invention, reference being had to ,the

accompanying drawings, 1n which, l

Figure bin embodying my invention;

Fig. 2 represents a. plan view of the same; Figs. 3 and 4Ashow a modification; and Figs'. 5, 6 and 7 represent three forms of disk which may be used in the manufacture` 'of my improved bobbin.

. Referring more particularly to the drawings, 2 is a tubular core [preferably of fibrous material, such as paper orA pasteboard. d is a mass of threadpcross-wound thereon in the usual manner and so that the len h ofthe mass is approximately equal Vto t e length of the core. 6,-6 are two disks composed of stron4 ly coheringilexible material which is a esve when superficially 1 represents a side view of a bobgelatine is practically colorle, the color of the thread and any surface imperfections are'apparentl through the same. The gelarnoistened. I prefer to use a homogeneous tine ends, moreover, keep the atmospheric l moisture from entering the' mass through the end faces thereof. lSuch sheet gelatine is sold under the trade name of G1assine.

In manufacturing my bobbin I first windt the thread upon the icore, the ends of the core beingI approximately flush with the ends of the mass. I then secure to the ends y of the mass disks of the material referred to, whichdisks, when applied, may be centrally perforated as shown at 7 in Fig. 5, or may be without perforations as shown at 8 in Fig. 7.. If applied without`being perforated, they can subsequently be perforated either by removing a piece the size of the inside of the core, or by forcing a mandrel into the center of the core and pressing the center'of the disk into the core and outwardly againstthe inner wall of the core.

"As shown in Figs. 1 and 2 the perforations in the disks are of the same diameter as the internal diameter of the core, and adhere to the core as wellas to the mass so as to stay in position until the bobbin is completely unwound, that being desirable.

In applying the disks to the mass, I, in

practice, slightly moisten the disks super- -F {icially on one side and then apply them to the ends with cient pressure to make them adhere, altho it may be possible ,to slightly meisten the ends ofthe mass superticially and press the dry disks thereon. I have found that .in the bobbins the adhere-nceI is sufficient to hold the disks in place and, if the moistening isl slight,tnot sufiicient to interfere practically with the unwinding of the thread. The adherence seems to be due to surface contact betw en the thread strand and the end pieces, and independent of the body of the strand, that is, to the connection between the end pieces and the somewhat delicate that side in contact with sufiiends of the core as well proposed to secure pa r :t

thereof or the scope fibres constitutin the'na or u` SllrIOlmding the body of t e stran t disks when applied, if they do not have perforations of greater diameter than the internal diameter of the core, may be made to adhere to the as to the ends of the mass. v I

The cores may. be slightly longer than the mass, and the perforations larger than the core, in which case, pressure may be applied in the usual bobbln press to compress the mass and upset the ends ofthe core so as to form flanges 9 outside thev disks as shown in Figs. 3 and 4, which hold the disks in place `after the bobbin has been unwound.

The bobbins may be compd inthe bobbin press and their ends rounded before the end pieces are applied; in which case, the gelatine end pieces are molded by the a plying pressure to conform to the shape o the ends and retain their formed shape. lin Fig. 5 the disk: has a hole 0f the a Mw diameter as the bore et the tube. lin Fig. 6 the hole is the same as the external diameter of the core as in Figs. 3 and l. ln Fig.

l the disk has no hol l l am aware that heretofore it has been to such maes by means of muci a. e. Mucila, however, adheres too strong y to the thre and 1s not of itself strongly cohering so as to capable of being formed into thin pliable sheets as is the case of the gelatine weh l use in forming the ends of my bobbins. Furthermore, pa r thus secured is not transparent and neither the mass of thread, the color of' the mass, nor any im rfections in the mass are visible throughpeit.. The material l use is not onl strongly cohering and dexible but itison y slightly adhesive when su rficiall moistened.

As wi be evi ent to those skilled in the art, my invention ermits of various modiications without eparting from the spirit of the appended claims.

What l claim is: 1. ln a filled bobhfin, the combination of a tubular core having thereon a cross-Weiland mass of thread of a thickness approximately equal to the length of the core, and end pieces com rising strongly cohering .dexihle material s ightly adhesive wh orally moistened,V said material able of being famed into thiny said end pieces adhering sligh of the mass.

2. ln a filled hobbin the combation of a tnbur core having thereon a cress-rronnd mass of thread having thieltness approximately equal to the length et the core, and homogeneous transparent end pieces 'coinbeing eapy to the ends en perd.

liable sheets,

attacca Vslightly to the ends of the mass.

3. lin afilled bobbin the combination of a tubular core having thereon a cross-wound mass of threadof a thickness approximately equal to the length of the oorenand thin end homo neous pieces of gelatlne adhering slight y to the ends of the mass.

d. lin a lled bobbin, Athe combination of a vtulnilar core having thereon a cross-Wound mass of thread of a thickness approximately y equal to the length-of the core; and end pieces com rising strongly coheringdexible material ightly adhesive `when sup-erhcially moistened, said material being capable of being formed into thin pliab e sheets, the ends of the mass, the ends of said core extending through said disks and being upset.

' 5. The method o f forming a filled bobbin, which consists in cross-winding a mass of thread upon a tubular core, applyin to the ends of the mass under ressure en f? pieces of strongly cohering flexible adhesive material and causing them to adhere slightly to said ends.

which consists in cross-winding a mass o thread upon a tubular'core, applying to the faoes'on'f the ends of the mass under pressure thin end pieces of strongly cohering dexible adhesive material one o the opposing' faces of said ends and end pieces being previously slightly moistened.

7. The method of forming a illed bobbinm which consists in cross-Winding a mass of thread upon a tubular core, superfcially moistening thin end pieces of stron ly eohering flexible material slihtly a hesive when supercially meistens and applying the same under prure to the ends o the mass.

. 8. rlhe method of forming a lled bobbin, which consists in cross-Winding a'mass of thread upon a tubular core, supercially moistening end pieces of thinge atine and said end pieces aering slightly to aplying the same under pressure to the en

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