US957825A - Bobbin. - Google Patents

Description

T. P. WALSH.

BOBBIN.

Patented May 10, 1910.

rnonas r. wansn, or Bosron, Massacnusnrrs, assrenoa T0 WALSH-Bazaar. coiaror TION, or PORTLAND, Marnie.

BUBlBIItl'.

Specification of Letters Patent. .Pgfientedl lWa y 1U, 191% Application filed November 20, 1909. Serial 1V0. 529,055.

To all whom it may concern:

Be it known that I THoMAs lP. WALSH, a citizen of the United States,an'd resident of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Bobbins, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

Great inconvenience and expense have heretofore been occasioned by the fact that there is always left on bobbins a small body of yarn, which is usually unwound or cut away by hand. The ordinary practice is to deliver the bobbins, as they drop from or are removed from the looms, to boys, who cut the yarn remnants from the bobbins. by means of sharp knives. The knives necessarily cut into the yarn-receiving surface of r the bobbin more or less, thereby roughening the bobbin and soon spoiling it. Aside, however, from the destruction of bobbins, this removal of the yarn bodies from the bobbins is expensive, as the average mill re uires a large number of boys constantly per orming this unhealthful work.

Accordingly it is the object of my present invention to provide a bobbin which will greatly facilitate the removal of the yarn, even though by hand, and which is primarily inten ed for use in automatic machines (as explained in my machine application) which handle the bobbins in large numbers, and with great rapidit strips therefrom all the yarn without the s ightest injury to the bobbin, thereby saving the large expense mentioned as well as preventing the loss of the bobbins.

Stated in general terms, in invention resides in providing, inthe bo bin, a shallow groove, running lengthwise of the bobbin and terminating short of the yarmdelivery central vertical longitudinal section; Fig. 3 is an enlarged cross sectional view thereof;

and Fig. 4 1s a view similar to Fig. 1 show ing my invention applied to a diiferent form of usual bobbin.

The bobbin itself, in its general shape and construction, may be of any usual or preferred kind, being herein shown. in Figs. 1

.to 3 as comprising a butt end or holding ofthe bobbin. The remnant of yarn which a is usually lefton a bobbin when the latter is ejected or removed from a loom is indicated at 6. This body of yarn is sometimes large and sometimes small being at times considerably tangled an at other times even, sometimes being in a com act bunch or heap, and at other times sprea out thin as shown in the drawings, the result being that 'when removed by a knife in the hands of aboy, according to the usual custom, he soon gets into the habit of slashing into the bobbin itself'with one or. more cuts, more or less ill directed. I have found thatby cutting from the inside out the yarn may be instantly removed by a Sharp knife without any possi bility of'injuring the bobbin, this operation, moreover, being positive, so that all the am is removed atone cut. This is carrie out in my machine above alluded to, in which I I I i provide means to enga e a groove 1n the bobbin for automatical y positioning the bobbin with relation to the machine and with relation to the. knife, and for also directing the knife.

Accordingly my present invention consists in providing a bobbin with said longitudinal groove as indicated at 7 (which may have any desired cross-sectional shape, with a square, round, pointed or other bottom or not), said groove terminatin at 8 back from the extreme end 9 a sufiicient distance to leave the surface of the yarn delivery end 4 peripherally smooth and entirely uncut throughout its circumference. Preferably also it slopes upwardly at said point 8. The groove 7 has preferably .a uniform depth I 2 and 3, so that the edge of the groove will not become splintered or otherwise roughened or injured inuse, but will remain in perfect yarn-receiving condition.

My invention is intended for bobbins of whatever material they may be made.

In use, as the bobbins, which have dropped or been removed from the various looms throughout the factory, are collected, they are taken to my machine, or, it may be, to

I the hand operator, and a suitably shaped without slit, cut or indentation throughout .removed alike from all the bobbins.

knife is quickly run along the groove 7 beneath the yarn 6, cutting it accurately and instantly entirely away from the bobbin. The blunt back of the knife slides along the bottom of the groove, while the sharp edge of the knife projects obliquely from the groove in exactly the right position to cut the yarn to the best advantage. This entirely eliminates all danger of injury t-othe bobbins, facilitates the removal of the am with great rapidity, and insures that it is all By the term groove, it will be understood that I include any and all slitlike formations capable of receiving and directing a knife, whether shallow or not, and whether extending only partially or entirely through the shell, except when expressly stated to the contrary in the claims. Also it will be understood that by specifying that the groove shall terminate short of the yarn-delivering end of the bobbin, I mean merely that the bobbin shall be provided with a smooth peripheral yarn-receiving end, or in other words, irrespective of how the grooves may be originally made or formed in the bobbin, its open and exposed side at the periphery or yarn-engaged surface of the bobbin shall not extend to the extreme end 9 of the finished bobbin so as to interfere with the proper delivery .of the thread or yarn.

, It is essential that the delivery end 9 of the bobbin shall be perfectly smooth and its-entire periphery in order that the yarn may maintain continuous sliding and whirlin engagement around said end as it is pu led axially from the bobbin in the weaving process, and accordingly the groove- 7 does not continue throughout the entire len th of the bobbin, but, on the other hand, it gins as close as practicable to this smooth delivery end of'the bobbin in order that the knife, especiall when operated in connection with my mac ine, may have free movement for a considerable distance before engaging and cutting through :the yarn. The yarn remnant always gathers at and adjacent the butt end or holding end 1 of the bobbin at the oint where the cylindrical body portion of the bobbin verges or curves outwardly into said butt end, and accordingly this long extent of groove which normally extends beyond said yarn remnant when the spindle has been substantially exhausted of its yarn, serves as a means for giving directed momentum to the knife as its point is quickly slid along said groove on the metal track or lining 12 therein.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A loom bobbin, provided at its butt end with holding means and thence extending in a long slender yarn-supporting body terminating in a similarly slender smooth delivery-end Whose peripheral arn-engaging surface is uncut and uni'n ented, said slender body having a substantially uniform diameter from said butt end throughout its yarn-receiving extent to said smooth delivery-end, and provided with a longitudinal groove beginnin in said' uniformdiameter ortion of theImbbin adjacent, but not entering, said smooth delivery-end and continuing lengthwise of the slender portion and also lengthwise of at least a part of the butt end of the bobbin, whereby the yarn has free unimpeded axial delivery lengthwise over said smooth delivery-end in continuous whirling contact with its smooth surface, peripherally thereof, and, when all delivered exce t the usual yarn remnant adjacent the utt end, a long extent of said groove is exposed between said remnant and the said smooth delivery-end, for giving directed momentum to a strippin knife run quickly along said groove or cutting through said remnant.

2. A loom bobbin, provided at its butt end with holding means and thence extending in a long slender yarn-supporting body terminating in a similarly slender smooth delivery-end Whose peripheral yarn-en aging surface is uncut and unindented, said s ender body having asubstantially uniform diameter from said butt end throughout its yarnreceiving extent to said smooth deliveryend, and provided with a longitudinal groove beginning in said uniform-diameter portion of the bobbin adjacent, but not entering, said smooth delivery-end and continuing lengthwise of the slender portion and also lengthwise of at least a part of the butt end of the bobbin, and a metal track permanently lining said groove for the point of a knife to travel on, whereby eaaeae the yarn has free unimpeded axial delivery lengthwise over said smooth delivery-end in continuous whirlin contact with its smooth surface, peripheral y thereof, and, when all delivered except the usual yarn remnant adjacent the butt end, a long extent of said groove is exposed between said remnant and the said smooth delivery-end, for giving directed momentum to a stripping kniferun quickly along said groove for cutting it through said remnant. In testimony whereof, have signed my 7 name to this specification, in the presence of two subscribing witnesses. e

V THOMAS P. WALSH.

Witnesses:

M. J. SPALDING, EDWARD MAXWELL.

Images