US2225640A - Apparatus for manufacturing thread or the like - Google Patents

Description

1940- H. B. KLINE ETAL 2,225,640

APPARATUS FOR MANUFACTURING THREAD OR THE LIKE Filed Jan. 12, 1935 3 Sheets-Sheet l ATTO RNEYS Dec. 24, 1940. H, a KUNE ETAL 2,225,640-

APPARATUS FOR MANUFACTURING THREAD OR THE LIKE Filed Jan. 12, 1933 3 Sheets-Sheet 2 r- .l 1 WI lNVENTOR S 1%)05/1/ 5i ffZ/A/A",

7 M4 70? I Kw-ausrw AND ATTORNEYS Dec. 24, 1940. H, K N ETAL 2,225,640

APPARATUS FOR MANUFACTURING THREAD OR THE LIKE ATTORNEYS Patented Dec. 24, 1940 1 UNITED STATES PATENT OFFI QE APPARATUS FOR MANUFACTURING THREAD OR THE LIKE Delaware Application January 12, 1933, Serial No. 651,404

'lClaims.

This invention relates broadly to the manufacture of thread or the like. More particularly, it relates to the production, manipulation and processing, especially by a continuous method, of. thread or the like, as, for example, multiple filament artificial silk thread. The invention aims to provide process and apparatus by which, in a single machine, the thread or the like may, if desired, be produced, processed in various ways, dried, and taken up or wound in finished or semifinished package form ready for shipment, distribution, fabric manufacture, or the like. The invention further aims to provide process and apparatus permitting a closer degree of control in the manufacture of the thread or the like, with the consequent advantage of greater uniformity of the product.

One object of the invention is to provide method and apparatus by which any number of process steps can be performed on the thread or the like while it is in continuous motion, as from the source to the collecting device, but nevertheless ln a manner to avoid contamination of one bath by another, or, in other words, with complete separation of the various process steps and baths from each other. A further object is to provide apparatus which is exceedingly compact, occupying little, if any, more floor area than the ordinary artificial silk spinning machine, in which all parts of the thread or the like are readily accessible and in which the machine as a whole is of convenient form for any necessary adjustment, replacement or repair. Still a further object is to provide improved multiple form continuous processing apparatus capable of being built in units placed end to end, with the several steps of the process performed on devices vertically spaced from each other, for the purpose showing a modification; Fig. 5 is an enlarged plan of a portion of one of the bars; Fig. 6 is a cross section on the line 86, Fig.5; Fig. 7 is an end view from the left in Fig. 1; Fig. 8 is a detail sectional elevation on the line 8-8, Fig. 2,

line 3-4, Fig. 8; Fig. 4 is a diagram, in elevation,

through one end portion of one of the winding reels, all bars beyond the plane of section being omitted for clearness of illustration: Fig. 9 is a detail end elevation of one of the controlling cams: and Fig. 10 is a detail end view of one of 5 the reel bars.

While the invention is, among other things. adapted to use in connection with any process of making artificial silk thread, such, for example, as the cuprammonium, cellulose nitrate, cellulose acetate, and viscose processes, for convenience but in no sense of limitation it has been illustrated and will be described only in connection with the manufacture of artificial silk thread by the viscose process. The purpose of the inven- 1 tion is, among other things, to provide a method and apparatus by which viscoseartificial silk thread may be withdrawn in any convenient manner from its source and then led in turn to various devices for subjecting it to the appropriate method steps. The invention further. has for its purpose to provide means for delivering the thread so processed in finished or partly finished form, preferably dry, wound or otherwise collected in package form convenient for handlin or shipment. In these respects the invention is, of course, no less applicable to various other processes of manufacturing thread or the like.

In the viscose process, generally speaking, a suitable sodium cellulose xanthate solution is extruded into an acid coagulating bath. The thread so formed is collected either upon bobbins in a bobbin spinning machine or in the form of cakes in a centrifugal spinning machine, after which 35 the thread, upon the bobbins or in cake form, is subjected to various treatments, such as washing, desulfurizing, bleaching, souring, drying and the like. Some of these steps may be omitted or other or additional method steps may be performed upon thread, as will be readily understood. According to the present invention, any or all of these various method steps may be performed upon the thread during continuous thread motion from the point of spinning to the 45 device upon which it is finally collected. The drawings for convenience show only a few such steps, but they may be multiplied indefinitely, as will appear.

Referring first to Figs. 1, 2 and 7', the machine 50 illustrated as embodying the invention comprlses a suitable frame including front and rear up- I rights I, 2 connected by horizontal cross braces 3 designed to support the parts for the different steps of the process. The frame. and indeed the machine as a whole, is readily fabricated in unit form with the ability to attach to each other, in regular order, any number of such units, so as to multiply to any desired degree the number of threads which may be produced in a given multiple machine. For example, as many as one or two hundred complete sets of thread forming devices may be readily included in a single machine and be operated by the same source of power, the several sets of devices being disposed in align! ment. For simplicity of illustration,. there has been shown but a single multiple unit equipped to form six threads, although the number formed in each unit may be more or less than six.

At the back of the frame are mounted the necessary devices for spinning the thread, such as the pumps 4 supplied by a mass distributing conduit 5, each of which pumps delivers its quota of viscose to the usual swinging arm 6 terminating in a spinneret i. Arms .6 are hinged to turn about an axis at the point 8 for the purpose of swinging the spinnerets into or out of the coagulating bath, as is usual. In operation the spinneret is immersed beneath the acid coagulating bath 9 in a trough Ill. Thread A is led from the spinneret through the bath over or through suitable guides Ii, l2 to the first of a series of winding devices, five being shown in the drawings, marked respectively l3, l3a, I32), I30, i3zi. Except for differences in the baths used with them, the process steps in which they are used, their diameters, and the direction of thread lead, these devices are alike in construction and manner of operation, so that detailed description of one will suiiice for all.

Generally speaking, each of the winding devices l3, I30, etc., may be any form of device upon which the thread may be continuously wound upon which it may be stored in relatively long length and from which it may be continuously unwound. In other words, the device is preferably so constructed and so operated as to enable the thread to be simultaneously wound upon it and un woundfrom it. At the same time, the device preferably has the capacity to store an appreciable length of the thread while exposing its entire length to treatment by processing reagents. Successive turns of the thread may. if desired, but preferably should not be permitted to contact with'each other and the thread should not be subjected to undue strain or rough handling. Various devices of the nature of thread-storage, thread-advancing reels, one form of which will be described more in detail hereinafter, are suitable for the purpose.

In the arrangement shown in the drawings, each reel is of generally cylindrical form. Each reel includes two sets of bars Ila. Nb of rectangular cross section disposed parallel to each other and arranged to form the elements of a cylinder.

Taken together, the bars constitute a hollow cagelike thread-handling device upon which the thread is wound in generally helical form. The reel is provided with means for operating the bars, individually and as groups, so asto cause thread wound upon it to assume such helical form and to cause the thread to progress bodily along the length of the reel from the point where it is wound thereupon to a discharge point. At such discharge point the thread is unwound from the reel and led to the next reel. The reels illustrated are long enough to take care of a plurality 'of threads, six being shown in the drawings. In

ries a large number of substantially helical turns of thread, as many as from fifty to two hundred turns of thread, although the turns are shown more widely spaced for clearness of illustration. The number of threads handled by a single reel may, of course, be more or less than six, as may be desired.

Any number of said reels may be mounted in vertically spaced relation, flve being shown in the drawings. The mechanism of successive reels I3, I30, [3b, etc., is so arranged as to produce travel of the turns of threads along the reels in one direction on the first reel, along the reel in the opposite direction onthe next reel, and so on. In other words, and as shown in Fig. l, the turns of thread progress bodily from left to right on reel i3, from right to left on reel l3a, from left to right on reel I32), and so on, so that each thread travels through from reel to reel in this manner clear to the bottom of the machine. .The thread passes from the last reel, i3d, to adevice conventionally shown at I5 and adapted to collect the thread in any suitable package form, such as in the form of a cone, hank, or the like. The thread is led from reel to reel in such manner that the transfer or carry over of the thread from reel to reel is at the front or working face of the machine, as shown in Fig. 2.

In the machine shown in the drawings, the

"upper reel i3 is a holding or set-up reel upon jected to any bath, although it may be, if desired,

according to the requirements of a particular process. Guides II and i2 serve as wipers to turn back toward the trough in surplus bath liquor clinging to and carried up by the thread. The thread is wound upon the upper reel ii in wet or moist condition. The entire time necessary for the thread to pass to the feeding on point and progress along reel I! to the place of discharge therefrom is utilized to permit substantially complete regeneration of the sodium cellulose xanthate to cellulose.

The drawings show the second stage of the machine as utilized for a washing step, such as washing with hot water to remove acid coming from the coagulatingbath or with hot water containing a small amount of sodium bicarbonate, soda ash or other reagent, for neutralizing remaining W traces of acid from the coagulating bath. In this stage, the reel B0 is provided with suitable means for supplying wash liquor to the thread upon the reel, such as a supply trough l6 mounted in the frame from which wash liquor is delivered to the thread upon the reel either by suitable spray nozzles above it or. in the manner shown, by flowing over a horizontal weir notch I I with its outlet above the reel axis. This weir notch extends the full length of the reels and supplies wash liquor it may be discharged to the sewer or be recircu- 70 lated to the supply trough l6 by any suitable device, such as the pump I 8a, conventionally shown.

In like manner the thread on the third reel, l3b, may be subjected to a desulfurizing process, such as by treating it with a solution of an alkali sul- 15 phide distributed over the thread from a trough I! by a weir notch 23 and collected by a receiving trough 2|, from which the solution may be returned to the supply trough [9.

Likewise, in the fourth stage, at reel lie, the thread may be subjected to another washing step, with clear water, which is either circulated over and over again or discharged to the sewer.

Other reels may be provided for additional steps, such as bleaching, further washing, etc., but for simplicity of illustration the reels, liquor supply devices, collecting and circulating troughs and pumps for such steps have been omitted.

Finally, the thread is led to the last' reel lid, where it is subjected to a drying operation. Reel I3d is enclosed within a drying chamber 24 in a hollow casing 22 of sheet metal or the like, only enough of the reel projecting beyond the casing to enable the thread to be led to and from it, as will be readily understood. The projecting portion of the reel may be practically covered with sheet metal, the several threads passing to and from said reel through very narrow slots or Openings 22a. In the casing 22 are finned heating coils 23, heated by steam or the like. The drying chamber 24 of said casing communicates by a passage 25 with a chamber 23 supplied by a fan or the like with a supply of air pro-conditioned as to moisture content, as by passing it through a suitable air conditioning apparatus conventionally shown at 23a. The chamber 24 also communicates by passage 21 with an outlet passage 23. An adjustable damper 23 may be provided for regulating the quantity of the air supply.

In the air conditioning device 23a the air is subjected to the action of a simple dehumidifier so as to fix its moisture content at a known amount. As it passes the heating coils 23, its temperature is raised to a point where it will leave a predetermined amount of moisture in the thread. Temperature control alone is sufficient to maintain uniform drying conditions in chamber 24. As a result, a control bulb 33 is placed in the discharge air passage and said bulb is adjustably associated with and is utilized to control a valve 3| in the steam supply line for the coils 23. The drying mechanism will accordingly automatically maintain uniform drying conditions and deliver the thread to the collecting device with any desirable maximum moisture content.

In a given machine multiplied as to units by placing units end to end as shown in Fig. 1, the supply and collecting devices for each stage,

- as well as the troughs I0, may be interconnected with each other across the full length of the machine. In other words, a single trough H) for the coagulating bath will extend down the full length of the machine with a single supply and a single discharge for bath circulating purposes. Likewise, each of the supply and collecting troughs l3, l3, etc., will preferably extend down the full length of the machine. If, however, such troughs are built in unit form with one trough length for each unit, the trough lengths for corresponding stages of adjacent units will be connected together by conduits so as in effect to constitute a single trough across the full length of the machine. In this manner only one pump is required to circulate the coagulating bath, one

pump for the wash bath, one pump for the desulfurizing bath, etc., so that all threads receive like treatments. The various treatments and operations are accordingly synchronized according to prearranged conditions.

Figs. 3 to 6, 3 and 9 illustrate the reel mechanisms.

Each reel includes a central rotatable shaft 32 having keyed to it at each end of the reel 9. spider-like end head 33 having a series of radial notches 33a in which the rectangular bars Ila, l4b are mounted. Each of the end heads 33 rotates adjacent to a stationary cam disc 34 rigidly mounted and supported upon one of the cross frame members 3. Each cam member'34 is provided with two cam grooves 35, 33 and with two end face cams 31, 33. Each bar is provided at each of its ends with an operating member 39 fastened to it by rivets 43 or the like and including an end arm 4| entering one of the grooves 35, 33 and a shoulder 42 abutting one of the end cams 31, 33. The arrangements at the two ends of the reel are alike in the sense that the end grooves 35, 33 in one cam member 34 are reversed duplicates of those in the other, while the end cams 31, 33 on the two cam members are oppositely acting or the reverse of each in detail one of other. End arms H on the bars of one group,

such as the bars l4a, are offset from said bars radially outwardly, while the end arms 4| on the bars of the other group are offset radially inwardly, as shown in Fig. 8.

The end cams 31, 33 produce longitudinal reclprocation of the bars l4a, I4b, whereas the groove cams 35, 33'produce radial motion of said bars, or, in other words, motion of said bars toward and from the central axis. As the shaft 32 rotates, it carries with it the two end heads 33 and causes the bars to move around like those of a squirrel cage. In the course of the movement thus imposed on the bars, their arms 4| and shoulders 42 travel in the cam grooves and along the end cams, causing the bars to reciprocate back and forth endwise and also to move in and out radially. The motion of said bars is diagrammatically illustrated but greatly exaggerated in Fig. 3.

Generally speaking, the two cam grooves 35, 33 are circles slightly eccentric to each other and to the central axis, say by one-sixteenth of an inch in a seven inch diameter reel. They are not true circles, however. Considering the full 360 of the cage, there are two diametrically opposite zones M, Fig. 3, each of about cir cumferential extent, where neighboring bars of the two groups are simultaneously in contact with the thread turns, and beyond these 30 zones M there are two very short zones N where the two sets of bars quickly change their relative radial positions, one group of the reel bars l4a moving inwardly and the group of bars I4b moving outwardly in one zone N, with the re-' verse action occurring in zone N on the opposite side of the reel.

During travel through these zones M, N, while both sets of bars are in contact with the thread, and while they are rapidly changing their relative radial positions, the shoulders 42 are moving along fiat portions of the end earns 31, 33 so that both groups of bars have no longitudinal motion in either direction. When the bars have changed their relative radial positions, one group moving inwardly and the other outwardly, so that the turns of the threads are supported on one group of the bars alone, then the end cams 31, 33 begin to produce longitudinal bar motion, that group of bars in contact with the thread turns moving forward to advance the thread and 75 that group out of contact with the thread turns moving backwardly or retreating to be ready for the next advance movement, and so on. From the practical standpoint. in the arrangement shown, thread advance occurs through approxi-- mately 270 of full rotation.

Speaking generally, the reel as a whole is of substantially the same effective diameter from end to end in the sense that while it ls'not a true cylinder it is very nearly such, and its effective circumference is the same from end to end As a consequence, while the same reel may be made to support and take care of a plurality of threads, such as six in the form shown, the rate of advance of each of the threads along the cylin-. der is the same at every point. However, if tie-- sired, the several separate thread carrying parts of each reel, six such parts on reel in the form shown, may be made each generally conical or with more or less of a taper from end to end or along any portion thereof. In this manner it is possible to compensate for shrinkage of the thread or the like as it moves along the reel, as will be readily understood. Such an arrangement is diagrammatically shown in Fig. 4.

End cams 31, 38 may vary in different reels,

so as to provide different rates of progression or travel of the thread turns along different reels.

The operating mechanism may take any suitable form. Figs. 1 and '7 illustrate the machine as driven by an electric motor which, through a coupling 5| and reducing gearing 52, drives a jack shaft 53 connected by a chain, belt or the like, designated, with the shaft 32 of the lowermost reel 13d. Said shaft is provided with a pulley 55 from which a belt 56 passes to a similar pulley on the shaft 32 of the next higher reel. The drive is then from reel to reel by successive belts 56 and proper pulleys, as shown in Fig. 1. The shaft 32 also carries a small pinion 51 meshing with a large gear 58 on a jack shaft 59 connected by a belt 60 to the pump operating shaft GI. Shaft 53 is also connected by a belt 62 with a horizontal main line shaft 63 which, by belt 54, drives a pulley 65 on the shaft 68 of the colle'cting device l5.

It will be understood that the same motor 52 may be used for driving any number of units such as those shown in Fig. 1. The motor may be placed at one end of the bank of units with drive entirely from one end or it may be placed at the middle of the bank so that the drive is in opposite directions. Shaft 83. for example, may

extend down the full length of the machine, in.

which case it may be used as the drive shaft for a series of units by making each unit self-contained with its own gears, belts, pulleys etc. In such case, each unit may be provided with a separate'clutch controlled power take-off from shaft 63. This arrangement has the advantage that the units are independent of each other, whereby any one may be stopped and started for threading up, repairs, or the like, without affecting others. For convenience in illustration, however, the drawings show an arrangement in which the pumps are driven by a single shaft 5i extending down the full length of the machine, in which the alined reel shafts 32 of adjoining units are connected by universal joints 32a, and in which shaft 53 is utilized only for driving the various collecting devices.

Of course, the several reels of a given unit, or, in other words, those reels traversed in order by a single thread from the spinneret to the collecting device, should be so proportioned to each other as to operate in harmony without detrimental effect upon the thread. Indeed, this is true throughout a multiple machine as a whole. In other words, there must be an organized timed relation between reels and other devices of a single unit and the same timed relation should persist throughout all the units of a single machine. Consequently, not only is a common drive or power source desirable for the reels of a single unit, but the same common drive should preferably be employed forall units, so that all threads will receive like treatment.

In addition, the reels of'a given unit should bear proper relation to each other, particularly as to their relative circumferential dimensions. If it is assumed that the angular speeds of the reels are the same and that there is no longitudinal stretch or shrinkage in the thread as it progresses through the unit, the eifectivecircumferential dimensions of all of the reels should be identical; in any event, care should be taken to see that no reel has an effective circumferential dimension less than that of its predecessor. Otherwise, slack in the thread would beproduced between the two reels with probable thread entanglement as a result of accumulation of slack.

Preferably, each reel has an effective circumference very slightly greater, if anything, than the circumference of its predecessor, so as to insure absence of slack in the carry-over portion of the thread from reel to reel; but, if desired, any definite amount of stretch may be put into the thread between successive reels by making the following reel slightly greater in circumference than its predecessor. The differences in circumference, however, usually should be very slight,

being measured in hundredths of an inch when the reel diameter is seven inches, as assumed, unless it is desired to impart considerable stretch to the thread, when any desirable differences in diameter may be resorted to. A similar effect may be accomplished by so arranging the driving mechanism as to drive different angular reels at different speeds. An increase in angular speed of a following reel obviously effects a stretching of the thread.

The apparatus should also be arranged for convenience in threading up, for which purpose successive reels are offset horizontally relative to each other, as shown in Figs. 2 and "I. In other words, while the axes of the reels are parallel to each other. each reel mounted a little nearer to the front of the machine than the reel next above it. The thread is wound upon the reels so that the leading and following portions of the thread, where the thread passes from reel to reel, are tangent to the reels at the front of the machine, but are not' truly vertical. As a consequence, when the machine is threaded up. the free end of the thread is applied to one of the bars on the upper reel while it is rotating. The thread is then wound by the reeling operation upon the first or uppermost reel, the helical turns progressing bodily toward the right, Fig. 1, until the discharge point is reached. The leading end of the thread is then picked oil. and is led down to the next reel, with similar operations at each, of the successive reels, and thence to the final collecting device.

If desired, the reels may be provided with means to cause the leading end of the thread to pass from reel to reel, so as to thread up the entire machine automatically. Each of the bars is of generally rectangular cross section and the turns of thread lie upon the narrower surface of the end or the thread, and indeed, all parts oi! the thread, tend to cling or adhere to the flat surface or the bars. To cause the leading end 01' the thread to leave the bar to which it adheres, when the end 01 the operating zone is reached, the bars are preferably cut away at the end of each operating zone in the manner shown in Fig. 6, to form a very narrow ridge or edge portion 10, as a consequence of which each bar presents outwardly a series of fiat feeding portions II separated by relatively narrow transfer edges 10.

In operation, as the turns of the thread progress along an operating zone of the reel, the leading end finally reaches the narrow transfer edge 10 and the reduction in adhesion as the result of narrowing of the bar is suflicient to cause the leading end of the thread to drop away from the bar and to tall by gravity directly to the surface of the next reel beneath it, which is oil'set toward the front of the machine so that contact will be insured. The thread then progresses along the operating zone of the next reel and when it reaches the transfer point automatically drops away and descends by gravity to the next reel.

It is obvious that various changes may be made in the number, nature, and arrangement of the parts of the apparatus without in any way departing from the spirit oi the invention. Thus in lieu of the reels shown and described may be employed other thread-handling devices by means of which the thread or the like may be advanced in generally helical form or, if desired, other rotary thread-storage devices upon which the thread may be subjected to appropriate processing operations. While a generally descending thread path is regarded as preferable, it will be understood that the thread may take any other path compatible with disposition of the threadhandllng devices in generally superposed or other vertically spaced arrangement, whether or not stepped. It is intended that the patent shall cover, by suitable expression in the appended claims or in the claims 01 divisional applications based hereon, whatever features of patentable' novelty reside in the invention.

What we claim is:

1. Apparatus comprising a source of thread or the like; a plurality of spaced, generally superposed thread-storage devices upon each of which the thread or the like describes an approximately helical path; and a collecting device upon which the thread or the like is gathered after having completed a course extending from said source to the uppermost thread-storage device, thence to the other thread-storage devices, and finally to said collecting device.

2. Apparatus of the character defined in claim lin which said thread-storage devices are spaced vertically from each other.

3. Apparatus of the character defined in claim 1 in which said thread-storage devices are ofiset bodily from each other.

4. Apparatus oi! the character defined in claim 1 in which successive thread-storage devices pro ject beyond their predecessors in the series.

5. Apparatus comprising a source of thread or the like; a plurality of spaced, generally superposed thread-advancing reels upon each of which the thread or the like describes an approximately helical path, each of said thread-advancing reels other than the uppermost projecting beyond the one immediately above it and a collecting device upon which the thread or the like is gathered after having completed a course extending from said source to the uppermost thread advancing reel, thence to the other thread-advancing reels, and finally to said collecting device.

6. Apparatus comprising a source 0! thread or the like: a plurality of spaced, generally superposed thread-advancing reels upon each of which the thread or the like describes an approximately helical path, each 01 said thread-advancing reels other than the uppermost being offset bodily from the one immediately above it: and a collecting device upon which the thread or the like is gathered after having completed a course extending from said source to the uppermost thread-advancing reel, thence to the other thread-advancing reels,

and finally to said collecting device.

7. Apparatus comprising, in combination, a common coagulating bath; a series of units each of which embodies means for forming thread or the like, a plurality of like thread-storage devices on which the thread or the like is advanced in generally helical form, and means for collecting the thread or the like; interconnecting means for supplying treating fluid to corresponding thread-storage devices 0! all units; interconnecting means for collecting treating fluid from corresponding thread-storage devices or all units; and means for operating corresponding threadstorage devices of all units in synchronism, thereby minimizing unit-to-unit variation in the properties of the thread or the like.

HAYDEN B. KLINE. WALTER F. KNEBUSCH. ALDEN H. BURKHOIDER.

CERTIFICATE OF CORRECTION, Patent No. 2 ,225',6|4.0. Y December 214., 1914.0;

' EAYDEN B. KLINE, ET AL.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column, line 60, for the word "reels" read -reel--; page 1;, first column, Iine-l8, sfter "on" insert "eachiine l9, strike out "each"; same page, second column, iine 15,- strike out "angular" and insert the same after "different" in line M line 52, after "reel" insert -isend that the said Letters Patent should he read, with this correction therein that the some may conform to the record of the case in the Patent Office.

Signed and sealed this 25th day of March, A. D. 19m.

Henry' Van Arsdale, (Seal) Acting Commissioner of Patents.

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