US2002843A - Thread or yarn cleaner - Google Patents

Description

y 1935- A. E. TRUESDELL 2,002,843

THREAD dR YARN CLEANER Filed Nov. 17, 1952 //V|/EN TOR AiUHz/R E TRZ/ESJELL 4 7' TORNE Ys 5.. making fabric;

I Patented May 28, 1935 I N TE-D STAT s PATEN OFFICE THREAD 0R YARN CLEANER Arthur E. Truesdelhlfittsfield, Mass. Application November 17, 1932, Serial No. 643,080

' '6 Claims. (01. 28-64) My invention more particularly relates to a device commonly known as a slub catcher or -slub-:

ber for removing slubs or other enlargements which freque'ntly occur in textile filaments for Such imperfections; if not removed, are likely to breakthe needles or the yarn when used in knittingmachines, and when knitted or woven into cloth causefimperfetions therein. l e. .1.

{Various types oi slubbers are now in-=use' most of which are ineificient asjthey' will remove under time harmful imperfections in-the yarn. Their detecting element is not I s'ensitive enough toj cope withthe high yarn windingspeeds now employed andon closer adjustment theybecome nonselective and make uselesscuts in the yarn. In some devices the yarn wears the detector and soon the proper gauging is lost-. Inoth'ers close adjustment cannot be had without incurring use- 7 cannot be easily and accurately setiOrthe yarn size, thickness. gauges" being; generally used;=which depend for accuracy on'the feel of the setter. One of the objects of myinvention is .to provide a device of this character .tobe both sensitive and" selective withoutnin'curring useless breaksih the yarn; 1. Another object is toprovidea simple adjustment for the detection groove,;both accurate and easily set. a i v r it Another; object is to provide easy replacement of parts subject towear as will be evident. A further object is toprovide aselective detection to suit the needs of the particular mill. I "My; invention will best be understood by reference to the accompanying drawing in which I have illustrated, a preferred embodiment thereofandinwhich- A a Fig. 1 is a front elevation of a deviceembodying my invention; V a 5 I Fig. 2 is a side elevation thereof; Figs-3 is a fragmentary detail illustrating the mountingof the table on the frame; l r Fig. e isa side view of a modified form of detector shoe enlarged; and i r r A .-Figs.; 5 and-6 illustrate further enlarged modifications of detector shoes. i -Like reference characters indicate like parts throughout the drawing. 7

Referring to the drawing, I indicates generally a frame comprising abracket H bywhich the frame. may-be secured to a part ofthe winding machine preferably by a set screw] 2. the bracket the table 21 by. a screw 33', the upper edge of the tion of the frame'in order to hold the device securely in position. The frame ID also comprises a standard [3 .which extends upwardly and then horizontally as at M and then downwardly as at I5; The standard I3 is also provided with extensions l6 and I1. The extension i6 is provided With/an, elongated slot I8 in which is mounted a shaft:;l9 preferably provided with an enlarged portion 20 and secured in position by a nut 2i. On the shaft are mounted two yarn engaging friction discs 22'- and HI whichjare held in engagement againstthe enlarged portion 20 of the shaft by a coil spring '23which is interposed between the disc 22 and a nut 24 engaging a screwthreaded? portion 250i the shaft I9. It will, of course, be understood that any other form of'tension device maybe employedtosecure'proper winding of the yarn on the package.

.A; guide roller 26-for the yarn is mounted on a shaft secured to the other. extension ll. A table 21 is secured to the standard I3 by screws 28 one of whichis'illustrated in Fig. 3 the ends of which are received in tapped openings 29 in the table. The screws 28 pass through slots'30 in the stand ard I3 thereby permitting vertical adjustment of the table.

A guide plate 3| for the filament is mounted on the table 2'! and is preferably secured in position by a clamping plate 32 which is secured to clamping plate 32. engaging the guide plate 3|. The engaging surfacesof the table 21 and the guide plate 3! are inclined with respect to the line of travel of the yarn or thread 34 so that a longitudinal movement of the guide plate 3| with respect to the table 2'! raises or lowers the upper surface of the guide plate 3| to a position parallel to its original position. The table is calibrated as at 35 and an adjacently disposed portion of the guide plate is provided with a mark or calibration 36. The calibrations on the table 21 are preferably so made with reference to the inclination of the table and the guide plate, that the longitudinal movement of the guide plate through one calibration represents a vertical movement of 1/1000 of an inch. This construction providesan easy and accurate adjustment of the guide 'plate. While I have illustrated the calibrations arranged on the faces of the table and the guideplate, it will be understood that 50 the guide plate could be set back from the table and the calibrationsplaced on the top of the table and the sideof the guide plate, or other convenient way. i

generally at 3?, is provided with a shaft 38 the ends of which are mounted in non-friction bearings 39 mounted in the standard l3 and the downwardly extending portion thereof I5, respectively. The detector 3'1 comprises an arm 40 provided with an extension 4| on which is mounted an adjustable weight 42 which normally holds the arm 48 in the inclined position illustrated in Fig. 2 against a stop 43 preferably in the form of a pin which is received in an opening 44 in the standard.

The arm 49 is preferably formed of wood or other light material having little inertia thereby improving the sensitiveness of the device. 7 A readily removable metal shoe 45 in the form of an angle piece in the illustrated embodiment of my invention is secured to the lower end of the arm 40 as by a screw 48, the lower portion of the shoe extending across the lower end of the arm 40 and paralleling the line of movement of the yarn; It is evident that the shoe may be made in two parts, a blade and'a drag which may be separately replaceable. In the embodiment of my invention illustrated in Fig. 2, the lower side of the shoe 45 is provided with a plurality of downwardly extending comparatively narrow projections 41 constituting slub detector elements, the lower edges of which are normally parallel to the upper surface of the guide plate 3|, the projection lll at the forward end preferably being sharpened. It will be noted that the detector elements and the sharpened element are located in advance of the normal from the pivotal point of the detector unit to the line lower edges of the elements 47 and 4' of the 1 shoe 45 are equally distant from the top of the guide plate 3!. The guide plate 3| is so adjusted with reference to the detector shoe, that the filament of yarn or thread of normal thickness will just passbetween the guide plate and the shoe without moving the latter. When an enlargement, however, such as a-slub 48 occurs in the yarn or other fibrous filament, the arm 40 is tilted to the right as viewed in Fig. 2 about its pivot and the knife edge 41! or other detector bites into the thread and severs it where the slub or other enlargement occurs. By the provision of a multiplicity of detection elements of the proper character, the efficiency of the detector unit is increased. 7

The operation of the device is as follows.

The yarn or other fibrous filament 34 is wound from a suitable bobbin, tube or reel and passes between the friction discs 22 and 22] over the guide plate Stand the guide roller 26 to a package, not illustrated.

The table 27 and guide plate 3| which is mounted thereon have previously been set by means of screws 28 to best accommodate the various sizes of yarn'to be wound. This means that if the yarns to be used require an average spacing below the shoe 4 5 of .015 of an inch, the table 21 and guide plate 3i will be set to make the spacing .615 of an inch,-when the guide plate 3| is in midposition on the table. This setting can then be easily modified on a changeof yarn size by loosening clamp 32 and sliding the guide plate 3! forward or backward to give the required new spacing. In the position shown the spacing is ments 4! or 4H which Will cause the detector .017 of an inch.

Any substantial enlargement in the yarn such as a slub will encounter one of the detector eleelement to swing tothe right in the direction of yarn travel enabling element 4?! to sever the yarn. The slub is then removed by the operator in the usual way, a knot tied in the yarn and winding renewed.

By removing the stop 43, the arm 46 may be moved upwardly so as to expose the lower side of the shoe and permit ready cleaning thereof.

In Fig. 4 I have illustrated a modified form of shoe which is particualrly intended for detecting and removing coarse yarn. In this case the shoe is provided with a cutting edge 4?! as in the'case of Fig. 2, but is also provided at the rear thereof with a comparatively large projection 442 having a correspondingly large lower area .to engage the enlarged yarn. The shoe illustrated in Fig. 4- may be made even more effective by roughening the lower surface of the projection 442.

Fig. 6 illustrates a design of shoe provided with three detector elements 444 particularly useful for detecting slubs as distinguished from coarse yarn, and Fig. 5 illustrates a device intermediate between the devices of Fig. 4 and that of Fig. 6, the same being provided with two detector elements 443.

The above designs of shoes provide differing means from which the user can select the, one most suitable for his needs.

While I have described myinvention in its preferred embodiments, it will be understood that the words which I have used are Words of description rather than of limitation and thatchanges within the purview of the appended claims may be made without departing from the true scope and spirit of my invention in its broader aspects.

WhatI claim is:

1. In a device of the character described, a

frame, a detector unit swingingly mounted thereon, a table mounted on said frame, a guide plate over which a filament of fibrous material is movable mounted on said table, the engaging surfacesof said table and said plate being oppositely inclined with respect to the line of travel of said filament, whereby the longitudinal movement of said plate varies the distance thereof from said unit, and means for adjustably holding said plate to said table.

2. In a device of the character described, a frame, a detector unit swingingly mounted thereon, a table mounted on said frame, a guide plate over which a filament of fibrous material is movable mounted on said table, the engaging surfaces of said table and said plate being oppositely inclined with respect to the line of travel of said filament, whereby the longitudinal movement of said plate varies the distance thereof from said unit, said table and said plate being provided with adjacently disposed calibrated portions, and means for adjustably holding said plate and said table together.

3. In a device of the character described, a frame, a detector unit swingingly mounted thereon, a table mounted on said frame, a guide plate over which a filament of fibrous material is movable mounted on said table, the engaging surfaces of said table and said plate being oppositely inclined with respect to the top surface of said plate, whereby the longitudinal movement of said plate varies the distance thereof from said unit, means for adjustably holding said table and wards and away from said unit. 7

4. In a device of the character described, a swingingly mounted detector unit, a table, a guide device over which a filament of fibrous material is movable mounted on said table, the engaging surfaces of said table and said device being oppositely inclined with respect to the top surface of said device whereby the longitudinal movement of said device varies the distance thereof from said unit and means for adjustably holding said table and said device together.

5. In a device of the character described, a swingingly mounted detector unit, a table, a guide device over which afilament of fibrous material is movable mounted on said table, the engaging surfaces of said table and said device being oppositely inclined with respect to the top surface of said device whereby the longitudinal movement of said device varies the distance thereof mounted on said frame, a guide plate mounted on .said table, means for guiding a filament of fibrous material over the top of said plate, said filament being movable vertically with said plate,

the engaging surfaces of said table and saidplate being oppositely inclined with respect to the line of travel of said filament whereby the longitudinal movement of said plate varies the distance thereof from said detector unit, and means for adjustably securing said plate to said table.

, ARTHUR E. TRUESDELL.

CERTIFICATE OF CORRECTEGN.

Patent No. 2,002,843. May 28, 1935.

ARTHUR E. TRUESDELL.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows; Page 2, first column, line 72, strike out the syllable and words "ments 47 or 471 which wiil cause the detector" and insert the same after "line 75, of same page and column; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of July, A. D. 1935.

Bryan M. Battey (Seal) Acting Commissioner of Patents.

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