US2572268A - Apparatus for manufacture of thread - Google Patents

Description

Oct- 23, 1951 H. A. KULJIAN APPARATUS FOR MANUFACTURE OF' THREAD 3 Sheets-Sheet l Filed 0G11. l, 1947 Oct. 23, 1951 H. A. KULJIAN APPARATUS FOR MANUFACTURE 0F THREAD Filed oct. 1, 1947 3 Sheets-Sheet 5 .0. H.. J n M an P R on vnr A P Jhr M.|.A|1! AT 1 w 1.1 1 I d. m?. wunl mul z M /F| ll L M. nmw 2 C C I nnuhl HHM 1|. 3 \nnu 3 C 45 C 8, .l I.I |.||nu|l| un". www; M P ll f wmwe g s W A H nl L/ L m L L .m NH N A Um WW. w d A H Patented Oct. 23, 1951 OFFICE APPARATUS FOR MANUFACTURE OF THREAD Harry Asdour Kuljian, Merion', Pa.

Application October 1, 1947, Serial No. 777,137

2 Claims.

In the manufacture of synthetic yarn by the i continuous method the freshly coagulated filament is wound about a thread storing and advancing device formed of at least two rolls, at least one of which rotates about its axis and at least one of which has its axis skewed, whereby such filament moves longitudinally of the thread advancing device in the form of helices, circumscribing said rolls. A preferred form of thread advancing device is shown in my copending application Serial No. 744,885, led April 30, 1947, and entitled Apparatus for Manufacture of Thread.

To complete its setting or regeneration, various chemicals are successively applied to the filament as it moves longitudinally of the thread advancing device, and after the last chemical treatment and before the filament is dried, it is preferably washed with water of the desired temperature to remove the chemicals.

The various chemical and water baths are applied, in measured quantities, to spaced portions or zones of the filament as it moves longitudinally of the thread advancing device and unless some provision is made against it, the various chemicals and the water will tend to intermingle thus permitting an acid, for instance, from the zone to which it is applied, to flow into an adjacent zone in which an alkali is being applied, and vice versa.

It is therefore one object of the invention to provide improved means for preventing the intermingling of the various liquids used in the treatment of the lament.

A further object is to confine the various liquids used to their intended respective zones vwithout the use of partitions, wipers, or other mechanical expedients which would in any Way subject the filament to friction or other undesirable effects.

The various chemicals referred t are used in large quantities and are relatively expensive. Therefore, if they can be retrieved separately, they can be reclaimed and used over and over again, and the higher the concentration in which the various chemicals are retrieved the higher their value.

It is therefore still a further object of the invention to produce improved means whereby the various chemicals used in treating the lament can be removed from the various spaced zones or portions of the filament in comparatively high concentrations so as to facilitate the process of reclamation of the liquids and thus reduce operational costs.

These and other objects will be more clearly understood from the following specifications and the accompanying drawings in which:

Fig. 1 is a fragmentary and diagrammatic side elevational view of a thread advancing device embodying my invention, the same being shown in association with a synthetic filament producing apparatus.

Fig. 2 is a view partly in section and partly in end elevation, taken on line 2-2 on Fig. 1 and Fig. 3 is a diagrammatic view taken along line 3--3 on Fig. 1.

Fig. 4 is an enlarged, diagrammatic and fragmentary view taken on line 4-4 on Fig. 2.

Fig. 5 is a section on line 5-5 on Fig. 4.

Fig. 6 is an elevational view of the roll which is marked RI in Fig. 2.

Fig. 7 is a fragmentary developed section of the roll shown in Fig. 6.

Fig. 8 is an elevational view of any of the remaining rolls which, for convenience of reference, are marked R2, R3, R4, R5, R6, R1, and R8, in Fig. 2.

Fig. 9 is a section on line 9-9 onFig. 8.

Fig. 10 is an elevational view of a suction tube which is inserted in a bore formed in each of the rolls shown in Fig. 2 and which establishes selective communication between the surface' of the rolls and a source of suction through holes leading from the surface of the rolls to said bore.

Fig. 11 is a section on line II--II on Fig. 10. v

Figs. 12 to 17 inclusive show a modified apparatus and are described as follows:

Fig. 12 is an elevational view of one ci?v three l rolls, which are marked RIO in Fig.` 17.

Figs. 13 to 16 inclusive are elevationalviews of the rolls marked RI I, RIZ, RI3, and RH in Fig. 17, the remaining roll in Fig. 17 being marked RI because it is identical with roll RI which is shown in Fig. 6. l v, "1t- Fig. 17 is a diagrammatic and elevational view similar to Fig. 2 showing one way in which the various rolls may be connected to" different sources of suction.

Fig. 18 is a view similar to Figs. 2 and 17 diagrammatically illustrating a second modification.

Fig. 19 is a fragmentary and diagrammatic sectional view on line I9-I9 on Fig. 18.

In Fig. 1 there is shown a spinnerette 20 which extrudes an appropriate solution into a coagulating bath 22 to form a lament 24. The filaments, after passing over one or moregodets 26, are wound spirally over a thread storing and advancing device formed of atleast two elongated rolls, at least one of which rotates about its axis,

and at least one of which has its axis skewed so as to cause the freshly produced mamentl to move, axially of the rolls, in the form of a plu-` rality of closely spaced helices. As shown, the thread advancing device is formed of eight rolls RI, R1, R3, R4. R5, R6, R1, and R8, which rolls are initially so mounted that a line connecting their axes will form a circle concentric with a central fixed axis. Any number, or all, or the rolls may have their axes skewed relative to said nxed axis and, any number, or all of the rolls may be rotated about their respective axes by means of a gear train 28 driven by a motor M, so that when the end of a freshly coagulated filament is wound about the right hand end of the thread advancing device, as viewed in Fig. 1, the lament will move, in the form of closely spaced helices 30, to the other end of the thread advancing device. The manner of skewing the axes of the rolls forms no part of the present invention, and is shown in my application for patent above referred to.

The opposite ends of the rolls are journalled in suitable antifriction bearings 29 in opposite end plates 3l and 32, as shown in dotted lines in Fig. 1 and in enlarged section in Fig. 4. The thread advancing device itself is mounted in cantilever fashion on a vertical frame 33, only a portion of which vis shown in Fig. l.

In order to complete the regeneration or setting of the filament, it is subjected to successive treatments by various liquids as it progresses longitudinally of the thread advancing device. As shown diagrammaticalh1 in Figs. 1 and 3, a series of pipes are arranged above the thread advancing device and in vertical registration with one of the uppermost rolls, such, for example, as the roll R4. The pipes are connected t sources of various chemicals and to a source of water (not shown) and are controlled by valves 34 at their discharge orices, or by valves located adjacent the respective sources as desired. As shown, however, a pipe Pl is connected to a. source of water and is provided with three spaced outlets each of which is controlled by a valve 34 for supplyingwater to spaced zones Wl, W2 and W3 on the roll R4; a pipe P2, also having a similar valve controlled outlet for supplying a first chemical to zone CI; a pipe P3 for supplying a second chemical to zone C2; a pipe P4 for supplying a third chemical to zone C3 and a pipe P5 for supplying a fourth chemical to zone C4. The number and arrangement of the pipes and zones is optional except that it will probably be desirable, in most cases, to provide a water bath, at, or near, zone W3 to wash away the chemicals prior to drying of the filament. Again, in practice, zone W3 will be somewhat spaced from the left hand end of the thread advancing device so as to provide room for a drying zone which has not been shown because it forms no part of the present invention. Thus, wash water and various chemicals are applied to different zones or portions of the lament as it moves longitudinally of the thread advancing device, but, as the lament moves through the successive zones, it tends to carry at least a portion o! the chemical applied to it, in one zone into an adjacent zone. For example, as the filament moves from zone WI toward zone Ci, it tends to carry some wash water along which will dilute the chemical being supplied to zone CI, and so on. Also, if the thread advancingdevice is mounted with its left hand end higher than its right hand end, to achieve counterflow of the treating liquids, the reverse would be true and liquid from zone C4, for example, will ilow into, ard will mix with the chemical applied to, zone C To prevent this intermingling it has heretofore been proposed to provide partitions which abut the threads and the rolls, but to provide such partitions for all of the zones on all of the rolls is not practicable and, if it were, the friction of such partitions against the thread will be deleterious.

According to my invention, I use suction for the purpose of confining the various liquids to the various zones to which they are applied, as well as for the purpose of separately removing the various liquids after they have served their purpose.

According to my invention, all of the rolls are provided with internal bores 36 which are blind at their inner, right hand ends, as at 38 in Fig. 8, and which open to the outside at their outer, left hand ends, as at 33, in the same figure. Also, al1 of the rolls, except roll RI, are provided with radially extending, spaced holes, or groups of holes, 40, 4i, 42, 43, 44, 45, 46 and 41 which lead from the surfaces of the rolls at points adjacent the limits of zones WI, CI, W2, C2, C3, C4 and W3 to the bores 36 in the rolls, as shown in Figs. 8 and 9. While the number of holes in each group may vary, I find it preferable to limit the number of holes to about four or so at the boundary or limit of each zone, so as not to dissipate the suction and so as to make it unnecessary to use unduly large capacity suction equipment. The groups of holes 40 to 41 are arranged spirally or helically along the rolls for a purpose hereinafter set forth.

In order to establish selective communication between the filament of the surface of the rolls and a source of suction, I insert in each of the rolls a tube 48 which, as shown in Fig. 10, is provided with a longitudinal slot 50. The slot 50 is straight and is, coextensive with the portion of the roll in which the holes 46 to 41 are located. The tubes 50 are fixed and have a running t with respect to their respective rolls so that the rolls may rotate freely, but not loosely, about the tubes. The tubes may be mounted in any desired manner such for example, by having their opposite ends secured in the opposite end plates 3i and 32. As a roll rotates, the holes, or the groups of holes, 40 to 41, will come successively into registration with corresponding portions of the slot 50 of the tube 48 in such. roll. Therefore, suction applied to the interior of a tube will be effective only as to one or more of the holes of any given group in any given zone at any given moment. For example, as the holes 4U and 4i on either side of zone Wi come into registration with the extreme right hand end portion of the slot 50, the holes in all of the other zones, on that particular roll will be out of registration with the slot 50 and, therefore only the water supplied to zone WI will be sucked into the interior of the tube. The same is true of the other groups of holes.

The left hand ends 35 of the tubes empty into an annular well 52 formed in the inner face of a header 54, which is secured in airtight relation to the end plate 32. A suction pump 56 is connected by means of a pipe 58 to the well 52 so as to produce reduced pressure therein. The pump 56 is connected to a point of disposal by means of a drain 66. When the pump is in operation, a degree of vaccum is established within the well 52 and inside the tubes 48. By this means, the water supplied to zone W2 for example, Will be sucked in through the holes 42 and 43 every time that these holes register with the corresponding portion of the slot 50 and are thus exposed to the suction in tubes. Since this takes place on every roll, and with each rotation of each roll, it will be seen that water is eiiectively removed from zone W2 and that this water cannot run over into adjacent zones CI and C2. In other words the groups of holes 40 and 41 are located at the limits or boundaries of the respective zones as to prevent any liquid supplied to any given zone from flowing over into any adjacent zones. The same is of course true of liquids supplied to the other zones. By the arrangement described, the wash water and the various chemicals used in the various zones are effectively segregated by suction alone and without the use f wipers, Spacers or other devices, which, in operation, contact the rolls or the thread on the rolls.

While the rolls R2 to R8 are provided with spaced groups of holes separating the various zones I find it advisable to provide at least one roll, such as the roll RI, with closely spaced holes 64, disposed spirally, longitudinally of the roll. The roll RI may be located as shown in Fig. 2, or it may be located in place of roll R3 or R5, or at any other location, and is used for withdrawing residual liquids without regard to segregation of the various liquids. The tube 48 in the bore of the roll RI, like the other tubes, leads into the reduced pressure recess 52 so as to be subjected to the action of the suction pump.

From the foregoing it will be seen that the structure shown in Figs. 1 to l1, inclusive, serves to prevent the intermingling of the various liquids on the surfaces of the rolls and serve to remove said liquids to a point of disposal.

In order to remove the various chemicals used in the treating of the thread in as separate and as pure a state as possible, so that such chemicals may be reclaimed and re-used, I have devised the embodiment of the invention which is illustrated in Figs. 12 to 17 inclusive.

In this embodiment of the invention, I use one or more rolls of the type shown in Fig. 12, one roll of the type shown in Fig. 6, and the rolls shown in Figs. 13 to 16 inclusive, respectively. The number of rolls of the type shown in Fig. 12 will correspond to the number of zones to which water is supplied, and the number of rolls of the type shown in Figs. 13-to 16 will correspond to the number of dii-ferent chemicals supplied to diierent zones. One roll of the type shown in Fig. 6 is usually enough to serve for removal of residual liquids with no regard for separation.

Except for the distribution of the radial holes the structure of the rolls of Figs. 12 to 16 inclusive, their mounting, their rotation, and the tubes 48 inserted therein are identical with the corresponding roll previously described in connection with Fig. 8. It is therefore now merely necessary to describe the manner in which 'these rolls prevent the liquids from intermingling on the surfaces of rolls and the manner in which the liquids withdrawn from the rolls are segregated for reclamation and re-use.

Beginning with rolls RIU of Fig. 12, it'will be seen that each roll is provided with three groups of holes which register, vertically, with the three outlets of pipe PI, which supplies water to zones WI, W2 and W3. Obviously, if there are two or four outlets on the pipe PI, there will be two or four groups of holes 18. Since the rolls RII) conduct waste water which is not worth reclaiming, and since the roll RI of Fig. 6 which is also used in this assembly, removes residual liquids, regardless of segregation, the tubes 48 in the rolls RID and RI are preferably connected directly to the intake side of a common suction pump 12 by a network of interconnected pipes 13. The pump 12 is provided with a disposal drain 14.

The roll RI I, shown in Fig. 13, is provided with only one group of holes 16 which register with the outlet of pipe P2 which delivers a first chemical to zone CI on the rolls. The tube 48 in this roll is connected by a pipe 11, directly to another pump 18 which is connected by a pipe 80 to a reclamation station, not shown, for purifying the chemical CI for re-use.

The roll RI2 is provided with one group of holes 8| which register, vertically with the outlet of pipe P3, which supplies a second chemical to zone C2, and the tube 48 in this roll is connected by means of a pipe 82 to the intake side of a pump 84 from which a pipe 85 leads to another reclamation station.

The roll RI3 is provided with one group of holes 88 which register vertically, with the outlet of pipe P4 which supplies a third chemical to zone C3 and the tube in this roll is connected by means of a pipe 89 to a pump 90 which is connected by means of a pipe 8| to a corresponding reclamation station.

Finally, the roll RI4 is provided with a group of holes 92 which register, vertically, with the outlet of pipe P5 which delivers a fourth chemical to zone C4 and the tube in this roll is connected, by means of a pipe 93, to a pump 94 from which a pipe 95 leads to a corresponding reclamation station.

Since effective suction can be applied to holes leading from the surface of any of the rolls RII to RI4 inclusive, only when, during rotation of a particular roll, the holes therein register with the corresponding portion of slot 50 in that particular tube 48, and since the tubes 48 in the rolls RII to RI4 are connected to separate suction pumps, it follows that, with reference to each roll, only the chemical supplied to the zone provided With holes, can be withdrawn through the tube 48 of the particular roll. Thus except for being contaminated with the chemical reagents of the filament itself, the chemicals thus separately withdrawn have relatively high concentration due to the fact that each of the chemicals in any given zone is withdrawn through the holes in that particular zone by means of a separate suction pump. It will be noted that in Figs. 12 to 16 inclusive the holes in the zones are spread across the length of the zones, instead of being located at the boundaries of the zones as in Fig. 8.

It is therefore obvious that the groups of holes in the rolls of Figs. 12 to 16 serve to withdraw the liquids separately and to prevent intermingling of the various liquids on the surface of the rolls.

It will also be noted that, in both modifications, one hole, or a relatively small numberof holes, are presented at one time to the slot 50, as the particular roll rotates about its tube 48 so that -the available suction is concentrated on one hole, or on a small number of holes, thus making it unnecessary to utilize large capacity suction pumps.

It will also be seen that I have devised an improved method of manufacture and treatment of atrasos synthetic yarns and more especially an improved method for a continuous removal of treating liqulds and I therefore lay claim to the method disclosed as well as to apparatus for carrying out the method.

In Figs. 18 and 19 I show another modication for withdrawing liquids from the thread by means of suction and, while the thread is moving, axially of a thread-storing land advancing device in the i'orm of a number of helices circumscribing the device. In this construction, I use any desired number of rolls such as the rolls RIG,` shown in Fig. 18. i

These rolls except for having no bores 36, no tubes 40 and no holes leading in from their outer sur.- faces. are as to mounting and skewing, rotation. identical, with the rolls oi Fig. 1. The rolls RIB of Fig'. 18 are arranged circularly to form a thread-storing and advancing device such as that shown in Fig. 1, and the thread moves axially of these rolls in the manner illustrated in Fig. 1. In order to remove the liquids from the thread IA use a shell or drum .98 which is formed of two identical end walls |00 and an intermediate member which is endless in vertical cross section. 'Ihis intermediate member itself,'may assume any desired contour', it being merely necessary to provide sections 04 thereof which will be disposed between the rolls RIB. The entire area. of the intermediate member, or at least the sections |04 thereof will be made of screen or other foraminous material. The sections |04 are located close to a line tangent to the rolls so that, as the thread 24 moves over the'rolls, the portions of the thread between the rolls will contact, or will be close to the apertured sections |04 as shown at X in Fig. 18. The sections |04 can be straight as shown or they can be. curved on substantially the same radius as the`circle formed by the rolls RIG, so that the outer surfaces .of the sections |04 will form a continuation of the 'curved surfaces of the rolls. One or more apertured pipes |06 are located near the lowermost rolls and the ends thereof which project through `one of the end walls 98 are connected to a suction pump not shown. Y

As the threadmovesover the rolls and as successive portions thereof come into registration with the foraminoussections |04, the liquids carried by said thread will be sucked in through the holes in the sections |04 and through the holes in the apertured pipes |06.

WhatIclaim is:

1. Apparatus for treating a filament including an elongated roll over which said filament is wound, said roll having a hollow interior and radial holes leading from its surface to its interior, said holes being arranged spirally of the major axis or said roll, a tube disposed in the interior of said roll and having a slot/therein, means for rotating said roll to bring ,s'aid holes successively into registration with said slot, and means for applying suction to said tube.

2. Ina lament treating apparatus including a plurality ot elongated rolls arranged with their axes substantially parallel to and forming a circle about a central axis whereby a iilament can be wound in the form oi' a helix having a plurality of spaced convolutions circumscribing and contacting thev peripheries of said rolls, said rolls having hollow interiors, tubes disposed in said hollow interiors and having elongated slots therein, a plurality o! suction creating devices, means connecting one of said suction creating devices to one of said tubes, each of said rolls having at least one group of radial passages leading from the surface thereof to its interior. with the groups of passages in each of said rolls being located in a position on said roll so as not to resister with the corresponding group of passages in any other roll, and means for rotating said rolls so as to bring the groups of passages in the respective rolls into registration with the slots in the respective tubes in said rolls.

HARRY ASDOUR KULJIAN.

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

UNITED STATES PATENTS Number Name Date 575,836 vHenrici Jan. 26, 1897 1,153,004 Althouse Sept. 7, 1915 2,017,455 Gessner Oct. 15, 1935 2,080,635 Schramek May 18, 1937 2,145,281 Walters Jan. 31, 1939 2,194,084 Gulbrandsen Mar. 19, 1940 2,251,931 Gundelflnger Aug. 12, 1941 2,499,464 Crewdson Mar. 7, 1950

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