US386623A - Feed rollers fob making fancy tarns - Google Patents

Description

(No Model.) 2 Sheets-Sheet 2.

T. A. BOYD. FEED ROLLERS FOR MAKING FANCY YARNS. No. 386,628. Patented July Z4, 1888.

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` UNITED STATES THOMAS A. BOYD, OF GLASGOW,

PATENT OFFICE.

COUNTY OF LANARK, SCOTLAND.

FEED-ROLLERS FOR MAKING FANCY YARNS.4

SPECIFICATION forming part of Letters Patent No. 386.623, dated July 24, 1888.

Applirati -n filed Novcmb. r 10, 1887. Serial No. 254,750.

To all 10710711, it may concern.:

13e it known that I, THOMAS A. BOYD, a Subject of the Queen of Great Britain and Ireland, and a resident ol'Glasgow, county of Lanark, Scotland, have invented certain Improvements in Feed-Rollers for Making Fancy Yarns, of which the following is a specification.

The object of my invent-ion is to provide improved and simplified means forproducing variegated or fancy' yarns-that is, yarnsin which the twisting togethcrof the cpmponentstrands, instead of heilig uniform throughout, as with many ordi nary yarns, is varied at intervals-- as, for instance, that the yarn may vary in thickness or degrees of the twist, or so that when two or more strands are twisted together one or each of the strands may appear more on the surface of the yarn, or at some parts thereof than at others. Strands of such double yarn are very frequently different from cach other in color or otherwise; but thesame means may be employed where similar strands are used to give varying thicknesses to the yarns at intervals.

In carrying out my invention any suitable machine constructed for doubling or for the combined operation ot' doubling and twisting may be employed.

The desired etl'ect is obtained by making one or both feed-rollers of each pair with interrupted feed-surfaces, this being obtained by making one or more depressions in the surface of the rolleror rollers. 'lhetwo or morestrands are guided so as to pass in contact with ditierent portions of the feed-rollers, and the interruptions or depressions iu the feeding-surface are made at parts ofthe rollersurfaces appertaining to the respective strands.

In the accompanying drawings, Figure 1 is a vertical section ot' a pair of feed-rollers embodying my invention, the upper one of the pair being shown as having the interruptions or depressions described. Fig. 2 is a face View ofthe upper roller and a. portion of the lower roller. Fig. 3 is a face view of a roller .built up of several parts in accordance with lny invention for feeding three strands. Fig. 4 is a vertical section of the same. Figs. 5, 6, and 7 are views of the diti'creut disks of which the roller is built up. Fig. 8 isa partly-sectional View of suiiicient of a ring twisting-machine t0 illustrate the application of my invention. Fig. 9 is a broken plan view showing the feedrollers and guides for the yarn drawn to a larger scale. Fig. 10 is a front view of the upper feed-rollerand the bracket which carries it.

Referring to Figs. 8, 9, and l0. the two threads a and b, which are drawn from smtablc cops or bobbins, (not shown,) and each slightly spaced, are kept separate until they pass through the curl-eyes g` on the end of an arm, G, forming in this instance part of the stop-motion, (which it is not necessary to describe.) This arm projects in front ofthe feedrollers e andf. The threads, after leavlng the cops or bobbins, rst pass separately through detectors cof thestop-motion, and then through the slots in the guide tl and between the continuously-revolving roller eand the top roller, f. They then pass through the curl-eyes gaud onto the twistiug-bobbin h. The top roller, f, of the feed-rollers has two sets of interruptions or depressions, f', alternating with each other, as shown in these figures, and also in Figs. l and 2, so that when the twisting is proceeding and the top ro1ler,f, resting on the under roller, e, the yarns are delivered, excepting where the recesses or interruptions come, over the roller e. Then, the grip on the yarn being released, the yarn remains stationary for a short time until theinterrupted portion comes over the lower roller and grips the yarn again.' terlnittent delivery and produce a fancy yarn. The two sets of interruptions on the upper feed-roller being arranged to alternate with each other for the two yarns, the intermittent feeding of the two yarns also alternates, resulting in the production, by means of twisting or doubling, ofa yarn with alternating variations.

The depressions in the feed roller or rollers may be variously arranged, and may be made to produce a great variety of effects. For instance, in Fig. 3 l have shown the roller as having three sets of depressions or interruptions for three yarns, the depressions for the di [ferent yarns being out of coincidence.

The roller may consist of a single piece, as illustrated in Figs. l and 2, or xnay be built up each-of a number of disks or pieces, as illustrated in Figs. 3, 4, 5, 6, and 7; or there may be a distinct roller for each of the several The effect of this is to give an in- ICO strands of a set which are to he twisted together; but in all eases the interruptions or depressions in the feed-surfaces for the diiferit, a spindle, 4, anl then slipping onto the spindle the disks 5, 6, 7, and 8, which last is threaded to be screwed onto the threaded end ofthe spindle to hold theinterniediale disks, 5, 6, and 7, which are formed with interi-nptions or depressions in them, as shown in Figs. 5, 6, and 7.

Thus, it' two different-colored strands are being twisted together and 'are arranged to be acted on by feed-rollers with depressions for one strand coinciding with the undeprxssed parts for the other strand, the strands will be fed forward alternately. When one strand is being fed to'rward,the other is left stationary,

` in consequence of which the fed strand wil be twisted around the nnfed st rand and wi l show moreon the surface. As thc twisting and winding proceed the continued rotation of the feed-rollers will cause the feeding and non-feeding actions to be interchanged as regards the strands, and the strand which showed most on the surface will then become what may be termed the inner strand and the previonsly inner strand will bceoinethe outer one.

I claim as my invention- 1. The herein-described feed rollers for doubling or `doubling and ltwisting machines, onel or both of said rollers having interrupted feedsurfaees, the interruptions for the diifcrent yarns being ont of coincidence. l

. 2. Theherein-described feed rollers for douL- ling or twisting and doubling machines, one or both of said rollers having two or more sels of depressions ont of coincidence with each other fordilercn't yarns.v

Tn testimony whereof Lhavesigned my name to this specification in the presence of two subscribing witnesses. t T. A.'BOYD.`

fitnessesz ALEXANDER l). YOUNG, J .was J. ING ms.

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