US2615653A

US2615653A - Creel

Info

Publication number: US2615653A
Application number: US140234A
Authority: US
Inventors: Arthur A Atkins; Harry M Averns; Walker Arthur
Original assignee: Courtaulds PLC
Current assignee: Akzo Nobel UK PLC
Priority date: 1949-02-03
Filing date: 1950-01-24
Publication date: 1952-10-28
Anticipated expiration: 1969-10-28

Description

Oct. 28, 1952 A. A. ATKlNs ET A1. 2,615,653

CREEL i Filed Jan. 24, 195o 2 SHEETS-Smm 1 2 'MM/HT@ f /x Maw/M lllllmllllmmrmlllfmlllluumun Oct. 28, 1952 A. A. ATKINS ET AL 2,615,653

CREEL Filed Janv. 24, 1950` 2 Sl'EETS-SHEET 2 FIGA.

Patented 0ct. 28, 19572 Arthur A. Atkins, Coventry, vHarry Averns, Allesley, ICoven'trsg and Arthur Walker, Coventry, England, :assignors to =Courtaulds Limited, London, England, a British company Application January 24, 1'950,7-'Seral No. '140,234 v In 'Great Britain February '3, '1949 l 'This invention relates te creeis. 'In one type -of Icreel used hitherto, for example iin warping, the bobbln's or otherfyarn packages,

-usually of the orde-r of 500 or more, 'are mounted on pegs which are arranged fin tiers on the :creel iframe land each separate 'yarn iis passed first through fa guide eye withinlthe creel fir-ame, then 'between 'a -pa'ir 'of horizontal tension y'discs and thence, with fthe 'aid Yof 'one or I.more guides and tension bars, through a reed to the collecting 'Ilevicafolr example'a swift or albeam.

When war-ping vcertain types4 of ltextile yarns, 'there are limits to the :practical speed 'at which the yarns 'can 'be wound on the :swift or beam. @ne .limiting :factor is the tendency :for the yarns to became electrified :as fa result foi rubbing, 4for example ron thread :'gu'id'es, this tendency being. more 'troublesome at higher speeds.V fWhen the fswiit fo'r 'beam is 'stopped or 'rota-ted :backwards slightly, the electrified yarns are disturbed as a.

result of electrical attraction orrepulsion, and iso tend-tc cometinto Contact withthecreel. The 'elec-trained 'yar-ns falso :tend to attract dust and rdirlt. When 'using low .twist yarns, there will `also b'e `xm'itual repulsion of :the individual .-iilamentsv of the yarn, with 'the result that filaments are lmore .susceptible vto damage.

'3T-he object of the vpresentl'invention is to permit 'thewarping of yarnaparticularlylow twistyarns, .at 'increased :speeds 'whilst substantially #avoiding the above-mentioned drawbacks.

The 'present invention comprises a creel in which the frame is provided near each peg with a tension device, one for each peg, and the front of the creel (that is the face of the creel nearest the collecting device) is Aprovided with a like number of tension devices so arranged that each yarn, on being withdrawn from `its -b'obb'in and passed to the collecting device is lheld substantially horizontal between A'the two tension devices even when the collecting -device is stationary or .has beenrotated backwards slightly.

Where the yarns towards the Iback of lthelcreel ,have Ia long path to travel before reaching the tension devices at the front of ythe creel, it may be 'desirable to support the yarn between the two tension devices, for example by rproviding intermediate thread .guides such as eyes, pigtail guides or combs. Yarn "guides, kfor example eyes, pigtail guides, U or inverted U guides :are valso provided 'beyond the tension v'devices at the `front of the creci incr-der to -lxnaii'itain the yarns horizontal as they pass through the tension device; the yarns are then led to the swift or beam in accordance with standard practice.

l y The 'invention also includes a combined 'tension-ing and guiding device for use on a 'creel according to the invention, comprising at least three 'ixed pins spaced to act as 1a vguide for .the yarn and to hold against transverse'displacement tensioning rdiscs having fa central hole vto permit the discs to be dropped yover the xed pins. The yarn is preferably passed between two 'tension discs each of which is loosely J'i'ltted over the pins. Additional `Weighting discs -o'r washers vmay ybe placed-onthe upper disc.

- Ina preferred 'form of creel accordingfto the invention, two sets of Lcombined ltensioning and guiding -d'ev'ices as 'described are provided on the vjcrel, one Vset being provided on `the "frame near the pegs `and 'the vother -set being provided in tiers at'the front-'of the creel.

in the Creel with the @mames-tensioning andy guiding devices according to `'the invention, the y yarn is 'Withdrawn from the yar-n package and l'passed directly between Athe tension discs; that is to say there are no separate guides provided Abetween the yarn package 'fand the discs. In this manner the time required for threading upfthe ycreel is `considerably reduced.

The preferred number -vo'f pins in each tensioning and Vguiding device fis three, the three pins vbeing `conveniently arranged at l'the corners of an equilateral triangle; more than tthree pins may 'be :used 'if desired. The pins and especially the "pins coming into contact with vthe yarn are preferably constructed from vmaterial having a rgood rsistance to wear; suitable materials are 'hardlcned Iand polished Istainless steel, fior example as used for needle roller bearings, chromiumk plated steel, vtungsten carbide, synthetic 'sapphire 'and synthetic ruby. The .pins are'preferably rounded oil at the top so that during threading up, they "yarn-slips readily 'between-the pins withoutdami 'knowntypes Ioi discs 'used for this purpose, in v -which the Weight of the top disc or 4discs de- The top 'disc or present invention is illustrated in the accompanying diagrammatic drawings in which Fig. 1 is a plan of the Creel with parts broken away;

Figure 2 is a side elevation of a Creel embodying the invention with parts broken away;

Figures 3 and 4 are a side elevation and a plan respectively of one of the tension devices near the Creel pegs, the upper tension disc being shown in section in Figure 3.

In the Creel shown in the drawings a series of bobbins I are mounted on Creel pegs 2 on av frame 3 in the usual manner with four tiers of bobbins and pegs. from the bobbins I and each yarn is passed through one of a series of tension devices 5 mounted on a bar 6 which conveniently forms part of the Creel frame. From the tension devices 5 each yarn 4 is passed horizontally to one of a second series of tension devices I, then, still horizontally, to one of a series of guide eyes 8 in a xed rail 9 and thence at an angle (see Figure 2) to the swift or beam (notvshown) in accordance with the standard practice. All the yarns 4 therefore maintain a substantially horizontal path from the time they pass through the tension devices 5 until they pass through the eyes 8.

The construction of the tension devices 5 is shown in Figures 3 and 4. A turret I0 is secured by a bolt I! to the bar 6 and three pins I2, I3, I4 are fixed in the turret I0 at the Corners of an equilateral triangle. The tcp of the pins are rounded off as shown (Figure 3)` to reduce or prevent damage to the yarn during threading up. Two tension discs I5, IG are dropped over the pins so that they nt loosely over them. The edges of the discs I5, I6 are turned up as shown in Figure 3 so that the yarn is naturally guided between the two discs.

The tension devices 'l are constructed in the same way as the devices 5 and are mounted in staggered relationship on a horizontal bar I I supported by fixed vertical posts -I8 at the ends or' the bars I'I.

If the Creel is very long it is desirable to support the yarns coming from theback of the Creel between the tension devices 5 and "I, for example by a series of eyes 'I9 in a bracket 20 secured to the bar 6.

The actual path of the yarn between the pins of the

tension devices

5 and 1 may be varied; for example the yarn may be brought into contact with one or with two of the pins in order to produce the necessary deflection. The position of the pins relative to the yarn may be adjusted as required by loosening the boltll, rotating the turret I0 to the desired position and tightening the bolt II.

Although the invention has been described as applied to a Creel in which the yarn packages are supported on a portion of the frame which is substantially at right angles to another portion of the frame from which the yarn exits to a swift or beam in accordance with standard practice, it will be understood that the invention is applicable to Creels wherein the package supporting part is located differently with relation to the discharge part or the exit rail than in the arrangement illustrated in the present drawings. The invention is for use in connection with any Creel wherein the package supporting part is spaced from the discharge part of the frame to such an extent that the relatively long lengths Yarns 4 are withdrawn as a balloonv 4 of yarn would have a tendency to sag and tangle in the absence of the means provided by the present invention.

What we claim is:

1. A warping Creel comprising a frame having a package supporting part and a discharge part, said package supporting part being spaced from said discharge part, relatively long lengths of yarn running between said parts having a tendency to sag and tangle with one another, a number of pegs arranged in tiers on the package supporting part of the frame with a plurality of l cated in close proximity to each peg for that peg,

the Creel being adapted to permit the yarns to pass directly from the yarn packages to said first set of tension devices, in combination with a number of horizontal bars at the delivery part of the Creel in alignment with the tiers of pegs and spaced from said pegs, and a second set of tension devices like in number to the rst set mounted on the horizontal bars, each yarn from a package being held in tension substantially horizontally between its tension device near the pegs at the package supporting part and a Corresponding tension device on the horizontal bars of the discharge part.

2. A Creel as claimed in claim 1 wherein each tension device near the creel pegs comprises at least three iixed pins spaced to act as a guide for the yarn and to hold the yarn against transverse displacement and a pair of tension discs loosely mounted one above the other on said pins, at least one tensioning disc having a central hole to permit it to beA dropped over the fixed pins and to bear frictionally on the yarn with the lforce of its weight. l

3. A Creel as claimed in Claim 1 wherein the tension devices, both near the Creel pegs and also at thefront 'of the creel each comprises at least .three fixed pins spaced to act as a guide for the yarn and to hold the yarn against transverse displacement, and a pair of tension discs loosely mounted one above the other on saidpins, at least one tensioning disc of each tension device having a central hole to permit it to be dropped over the fixed pins and to bear frictionally on the yarn with the force of its weight.

A. A. ATKINS. H. M. AVERNS. A. WALKER.

REFERENCES CITED i The following references are of record in the iile of this patent:

Germany Mar. 22, 1934