US3159962A

US3159962A - Double twisting spindle system

Info

Publication number: US3159962A
Application number: US299238A
Authority: US
Inventors: Franzen Gustav
Original assignee: Individual
Current assignee: Individual
Priority date: 1962-08-14
Filing date: 1963-08-01
Publication date: 1964-12-08
Anticipated expiration: 1981-12-08
Also published as: CH412662A; BE636081A; GB1008702A; DE1244629B

Description

Dec. 8, 1964 G. FRANZEN 3,159,962

DOUBLE TWISTING SPINDLE SYSTEM Filed Aug. 1, 1963 2 Sheets-Sheet 1 Dec. 8, 1964 FRANZEN DOUBLE TWISTING SPINDLE SYSTEM 2 Sheets-Sheet 2 Filed Aug. 1, 1963 United States Patent 3,159,962 DQUBLE TWESTn G SPTNDLE SYSTEM Gustav Franzen, Nee'rsen, near Kreieitl, Germany, assignor to Klaus Nimm, Krefeld, Germany Filed Aug. 1, l9iifi, fier. No. 299,238 Claims priority, application Germany Aug. 14, 1952 8 Claims. (l. 57-58.49)

The present invention relates to double twist spindles. In connection with spindles of this type, it is known, prior to the insertion of the thread into the spindle, to subject the thread to a humidifying action, for instance by means of a so-called humidifying device or by applying pastes or the like to the thread. Experience has shown that this treatment is insufficient because, primarily, the thread outer surface only absorbs the treating medium whereas the treating medium does not reach the core of the thread. Due to the high unwinding speeds, the in crease in the occurring centrifugal forcesin the balloon, and in view of the enlarged ballon diameters, the yarn dries out during the processing thereof to such an extent that the above-mentioned pre-treatrnent of the thread is insufiicient.

It is also known, in connection with the employment of yarn spindles, to blow air or steam into the balloon restraint-r. This treatment, however, has a relatively minor efiect because even in the most favorable instance, a deposit occurs only on that surface of the yarn which faces away from the bobbin axis, and the said deposit is again centrifuged 0%. A treatment ofthat surface of the yarn which faces the bobbin axis fails completely because.

the thread balloon forms, so-to-speak, m envelope shrouding the inner space. Moreover, the blown-in steam does not have primarily the purpose of wetting the yarn but is rather intended to form a hose-like protective coating for the yarn in order to prevent the same from freely swinging outwardlyas a result of the centrifugal force so that the balloon shape of the thread will be confined by the air and steam flow.

it is therefore an object of the present invention to provide a double twist spindle which will overcome the above-mentioned drawbacks.

It is another object of this invention to provide a double ice yarn in the'thread storage disc, pass toward the outside into the space between the bobbin can and the balloon restrainer housing. The treatment medium passing through the exit openings so-to-speak directly follows the yarn-passing through said exit openings with the result that the said yarn is in a concentrated way subjected to the treating medium even outside the thread storage disc. As treating medium may be employedwater, wetting agents, antistatica, film forming substances especially of synthetic material, emulsified minerals, emulsified ester compounds, wax, steam, aromatic substances, chlorine, fluorine and hydrogen if desired under consideration of the pH value.

According to a further development of the invention, the lower section of the thread storage disc forms an annular member surrounding the upper edge portion of the whorl in spaced relationship thereto so as to form an annular gap through which'the nozzle means for introducing the treating medium extends. This makes it particularly simple to introduce the treating medium into the interior of the storage disc.

Referring now to the drawing in detail, the arrangement shown therein comprises a spindle rail 1 having mounted therein the double twist spindle according to the present invention which is generally designated with the reference numeral 2 and may be driven by a belt engaging the whorl 3 of the spindle. Directly above the spindle rail 1, the spindle 2 is equipped with a spindle brake 4 which may be actuated by a linkage. Any suitable spindle brake may be employed in this connection, for instance a spindle brake disclosed in patent application Ser. No. 217,789, filed August 20, 1962. The upper end of whorl 3 has mounted thereon a thread storage or accumulator disc 5 with a hub 13 and a flange 5' which tapering in upward direction. Said disc 5 rests upon-the upper end of whorl .3 by means of a cylindrical section 6 provided with passages 7 for the passage of the yarn 8. The lower portion of the thread storage disc 5 is closed by anannular disc 9 whichsurrounds the upper portion 3a of whorl 3 in spaced relationship thereto in such a way as to confine therewith an annulargap 9a.

Said annnlar disc 9 has its outer, marginal portion 9b twist spindle which will make it possible more intensive- 1y to treat the twisting process of the yarn while assuring that the treating medium, at least to a certain extent, will also 1'62L'Cl1 the core of the yarn.

Still another object of this invention consists in the provision of. a double twist spindle as set forth in the preceding paragraphs which will permit a treatment of the thread or yarn not only with steam but with any desired liquid or semi-liquid and paste-like media adapted to be atomized and also with gaseous media.

These and other objects and advantages of the invention will appear more clearly from the following specification in connection with the accompanying dr-awing, in which FIG. 1 illustrates partly in section and partly in view a double twist spindle according to the present invention.

FIGS. 2 and 3 respectively illustrate two different embodiments of an'arrangement controlled by a thread control for controlling thefiow of thread treating fluid through a nozzle. a

The present invention is characterized primarily in that below the thread storage disc there is provided a nozzle for introducing the liquid, semi-liquid or gaseous thread-treating media, which nozzle is directedfinto'the interior of the thread storage disc. In this way, the confined inner space of the thread storagefdisc will receive the treating medium in a rather concentrated form connected to the outer marginal portion 5a of the thread storage disc 5, for instance by rivets 11 while between the marginal 'portions 9b and 5a an annular overflow dish 12 is clamped which extends radially outwardly and curves upwardly at the outer marginalportion thereof. The passages 7 for thread 8 have radially associated therewith eyelet-shaped thread guiding members 10 provided in the outer marginal portions 5a and 9b of the members 5 and 9 respectively. These, thread guiding members 10 consist of wear-resistant material.

Hub 13 of thread storage or collecting disc 5 has mounted therein a bearing sleeve 14 in which by means of the supporting bearings 15 and 15a there is journalled a tubular thread guiding member 16. The upper end of member 16 which, in view of the supporting hearing 15 has been offset a plurality of times, carries the cylinder body 17. To this end a threaded sleeve 18 surroundsand threadedly engages the upper end of the.

' tubular-thread guide member 16, said threaded sleeve and permit said medium to expand therein. The me- 13 being'screwed into the cylinder body 17. In the V recessi'l'a a cylinder body 17 there is mounted a seal .19 which surrounds the threaded sleeve i8and inits turn is surrounded by the sleeve 20. Slipped over sleeve 26 is a stepped, thin sheetmetal can 21 on which rests the inner wallof. the cylinder body 17., In downward direction the cylinder body 17 is followed by the slipped on sleeve 22 which'is provided with radially extending ribs 23; These ribs serve for supporting'the lower end of sleeve 24 the upper end of which rests directly on the cylinder body 1'7. The non-twisted yarn is wound Patented Dec. 8, 1964 3 onto thesleeve 24 and is withdrawn therefrom in a customary manner by means of a runner 25 freely rotatable on the upper end of the cylinder body 17. The lower edge of sleeve 24 rests on an annular body 26 having a U-shaped cross-section. This annular body 26 also serves for connecting the lower end of sleeve 22 to, a cone-plate 27 composed of two radially extending annular bodies 28 and 29 spaced from each other. Between said annular bodies 28 and 29 and distributed over the circumference thereof are a plurality of permanent magnets 30 which cooperate with permanent magnets 31 connected to the wall of the balloon restrainer can 32, which latter is connected to the machine frame F and is stationary. The cooperation of the

magnets

30 and 31 bring about that the cone-plate 27 will be at a standstill, with the result that also the cylinder body 17 forming the carrier for bobbin 24 will be held stationary. Cylinder body 17 rests in sleeve 14 through bearings 15 and 15a and the tubular guiding member 16. Sleeve 14 rotates together with the thread collector disc which in its turn is rotated by the whorl 3.

According to a further feature of the present invention, the bottom of the balloon restrainer can may have such a trough shape that the annular gap between the bottom of the can and the thread collector disc and of the overflow dish carried thereby gradually tapers in downward direction and has. its outer marginal portion directed upwardly. More specifically, the balloon restrainer can 32 is closed at the lower end thereof by a trough-shaped bottom 33 the central portion of which is provided with an opening 34. In the wall 33a of said bottom 33 there is provided a radially inwardly extending sealing disc 35 which extends into the cutout as of the whorl 3 and thus seals the inner space of the balloon restrainer can 32 with regard to the rotating whorl 3. In this way the whorl is undercut adjacent the ring gap through which the treating medium is sprayed into the interior of the thread collector disc 5 so that the treating medium cannot escape along the whorl. Through the opening 34 directly adjacent the confining wall 33a for said opening extends a nozzle body 37 which extends into the interior of ,thethread collector disc 5. It is by means of this nozzle that a treating medium such as a liquid, steam or the like is sprayed directly into the inner space of the thread collector disc 5. This brings about that the treating medium of collector disc 5 will be present in considerable concentration and a will act uponthe yarn 8 in this space while entering the core of the yarn which is subjected to the main twistingeffect. The expanding medium will, aided by the centrifugal force of the thread collector disc 5, pass radially outwardly through the exit eyelets at the marginal portion of the thread collector disc 5 and will thus follow directly the course of the yarn 8. Thus, the medium passes together with the yarn 8 between the housing bottom 33 and the overflow dish 12 and along the outer wall of the bobbin can-38which is carried by the cone-plate 27. It will be appreciated that the tapering of the expansion chamber outside the thread collector disc 5 should not be so great that the .treating intensity of the medium will be reduced to such an extent as to reduce the treating effect. Whenflowing upwardlypthe treating medium is between the can 38 and, the can 32 while the available gap narrowsin the direction from" disc 5 radially outwardly. As -a resultthereof, the concentration of the medium will, during its passage through ,the gap, be substantially.maintained; Thus, there will be assured not only a treatment of the yarn within the thread collector disc 5 but also outsidethe same and, more specifically, ina particularly concentrated form because themedium'passing through the respective eyelet strainer can open'at the bottom, the pumping effect of the rotating parts in cooperation with the flue effect of the balloon restrainer, draws air through to such an extent that it aids in the drying out of the yarn. This flue eifect is eliminated, according to the present invention, by the bottom closing the can. Additionally, this brings about a reduction in the air resistance so that the necessary power requirement for the spindle drive will be reduced. Tests have proved that the saving amounts to 10%. This is an .important diiference of the arrangement according to the present invention over heretofore known spindles in which, on the basis of incorrect assumptions, the suction is specifically increased by a blower.

By arranging a balloon restrainer can with a bottom, diificulties exist as to the threading of'the yarn through the thread guiding member and through the thread collector disc. Therefore, according to the present invention, the bottom of the balloon restrainer can is provided with an opening adapted to be closed, through which opening the interior of said can will be accessible while on the other hand, the interior may be closed when the double twist spindle isin operation and treating media are sprayed into the thread collector disc. To this end, the bottom 33 is provided with an opening 39 which is adapted to be closed by means of a tiltable flap or gate 40 adapted to be actuated by a handle 41. In order to assure that with the opening of the opening 39 of the balloon restrainer can 32, the thread collector disc 5 is stopped and simultaneously therewith also the spraying or blowing-in of the treating media, according to a further feature of the present invention, the said flap or gate 40 is so designed that it acts as actuating lever for a spindle brake while simultaneously interrupting the supply of the treating medium. Morespecifically, gate 40 isprovided with a downwardly extending arm 42 having its lower end pivotally connected to a yoke 43 of the spindle brake 4. A brake lever 45 is pivotally connected to the protruding nose 44. To this end the pivot 46 carried by the nose 44 engages a slot 47 in the brake lever 45. In this way, it will be assured that a downward tilting of gate 40 will actuate the brake lever 45 so that the latter will cause the spindle 2 to come to a standstill.

Also pivotally connected to yoke 42 at 48 is a bar 49 the other end of whichis pivotally connected to a lever 54 the pivot 51 of which controls valve body 52. This pivot 51 will, in response to the tilting movement of I gate 40 in upward or downward direction, open or close an opening in the valve body 52 through which the treating medium passes. In other words, when gate 40 is tilted downwardly, not only is the spindle braked to a standstill, but also the treating mediumwhich is under pressure in conduit 53 is prevented from passing on into the supply line 54, which is the connection between valve 52 and nozzle body 37. correspondingly, when gate 40 is moved into its closing position, spindle brake 4'is disengaged. and valve 52 is opened so that, simultaneously with the rotation of spindle 2, also treating medium is again introduced into the twist of the yarn.

If desired, the arrangement according to the present invention may also be equipped with any standard wellknown thread control which, in response to a thread break, 'will interrupt the supply of treating medium to.

the nozzle body 37. With this thread control and interruption of the supply of treating medium to the nozzle body 37 may furthermore be operatively connected an automatic braking or stopping of the spindle. In this Way, it will be assured that when the unwinding of the thread is interrupted or has been completed, also a stoppage in the supply of the treating medium will be eifected.

With regard to the thread controls above referred to,

any standardthread control may be employed as, for

instance, the thread control described in US. Patent No. 2,579,407or the thread control described in US. Patent No. 2,65 8,326. Thus, using, for instance, the principle i of the broken strand indicator of US. Patent No. 2,-

579,407, the arrangement according to FIG. 2 may be employed.

According to FIG. 2, the thread control comprises pigtail 59 which has one end portion electrically insulated and pivotally connected at 55 to a machine frame part. When pigtail 59 is in its rest position in which no thread pull acts thereupon, pigtail 59 occupies the dash position shown in FIG. 2 in which contact 57 carried by pigtail 59 engages contact 58 and closes the circuit of conductor 64. In this rest position, an electromagnetic valve 52a which corresponds to the valve body 52 of FIG. 1 is closed by an actuating magnet 60.

When thread 8 is withdrawn from the bobbin shown in FIG. 1 and passes through pigtail 59 so as to lift the same,

contacts

57 and 58 are disengaged thereby interrupting the circuit of the conductor 64 which in turn causes a de-energization of the actuating magnet 60 with the result that valve 52a opens and the treating fluid passes through nozzle 37. It will be obvious that when a thread break occurs which means that thread 8 no longer lifts pigtail 59 into its position shown in full lines, the

electric contacts

57 and 58 engage each' other with the result outlined above that valve 52a closes oft further passage of treating fluid through nozzle 37. I 7

According. to another example of. a threadcontrol which may be used in connection with the present invention, reference may be had to FIG. 3. FIG. 3 shows flap or gate 40 of FIG. lin its full line position representing the closing position and also in dash position representing the opening position. When flap or gate 40 is in closing position, valve 52 occupies its open position in which a treating fluid is dispensed through the nozzle body 37. Flap or gate 4% is held in its closing position by the free end of bar 49 extending over an electromagnetic coil 60. The magnetic core 61 of coil 60 is moved outwardly by a spring 63 and engages a notch 62 provided in bar 49. In this position, lever 50 adapted to control valve 52 occupies its vertical position. It will be appreciated that the embodiment of FIG. 3 is of course, likewise employed with the upper portion of FIG. 2, i.e., pigtail 59 and the elements 55 to 58.

When a thread break occurs, similar to the arrangement of FIG. 2, the circuit for the conductor 64 is closed and the electromagnetic coil 66? pulls core 51 inwardly against the thrust of spring 63. Consequently, magnetic core member 61 is withdrawn from notch 62 of bar 49 so that the latter, due to the weight il on gate 4% moves the latter into the dash position of FIG; 3. In this position, bar 49 is moved toward the right with regard to FIG. 3. Consequently, lever 59 occupies the position shown in dash line in FIG. 3 and in solid iinesin FIG. 1, in which valve 52 is closed thereby preventing further treating fluid fromv being dispensed through nozzle 37. At the same time, braking lever 45 occupies its braking position in which it brakes the spindle.

When the thread breakhas been remedied and the spindle has started again to rotate, thread 8 again lifts pigtail 59 so that the

contacts

57 and 53 engage. and break the circuit for the conductor d4. Consequently, the magnetic core 61 is again moved into its upper position shown in solid lines in FIG. 3, while M349 is simultaneously moved toward the left so that ma netic' tor disc means coaxially arranged with regard to said tubular member and rotatable about the lower end thereof, means drivingly connected to said disc means for rotating same, and nozzle means adapted to be connected to a source of thread and yarn treating fluid and arranged below said disc means eccentrically with regard to the axis of rotation of said disc means, the mouth of said nozzle means being directed toward said disc means for humidifying a thread or yarn passing between said nozzle means and said disc means.

2. In a double twisting spindle system having a substantially vertical tubular member for passing a thread or yarn to be twisted therethr-ough: rotatable whorl means arranged substantially coaxially with regard to said tubular member and below the latter in spaced relationship thereto, hub means mounted on said whorl means for rotation therewith, said hub means having outwardly extending flange means, annular bottom means connected to said flange means and surrounding said whorl means in spaced relationship thereto so as to confine therewithan annular gap, and nozzle means adapted to be connected to a source or" thread and yarn treating fluid and extending through said annular gap, the mouth of said nozzle means being directed toward said flange means for humidir'ying a thread or yarn'passing through the lower end of said tubular member and between said flange means and said bottom means.

3. Ina double twisting spindle system having a substantially vertical tubular member for passing a thread or yarn to be twisted therethrough: thread accumulator disc means coaXially arranged with regard to said tubular member and rotatable about the lower end thereof, whorl means drivingly connected to said disc means for rotating the same, nozzle means adapted to be connected to a source of thread and yarn treating fluid and arranged be low said disc means and eccentrically with regard to the axis of rotation of said disc means, the mouth of said nozzle means being directed toward said disc means for humidifying a'thread or yarn passing between said nozzle means and said di c means, an annular upwardly flaring dish-shaped member connected to the peripheral portion of said disc means and having its upper marginal portion curved upwardly, and a balloon restrainer can surrounding said disc means and having a bottom portion confining with said annular dish-shaped member a passage graduaily decreasing in cross-section in the direction toward the outer marginal portion of said dish-shaped member for passing therethrough a thread oryarn'humidiiied by said nozzle means.

4. In a double twisting-spindle system having a substantially vertical tubular member for passing a thread 37 while, of course, due to the upward movement of gate 40 braking level 45 has been moved into its ineifective or non-braking position. g

It is, of course, to be understood that the present invention is, by no means, limited to the pa icular constructions shown in the drawing but also comprises any modifications within the scope of the appended claims.

What I claim is:

l in a double twisting spindle system having a substantially vertical tubular member for passing a thread or yarn to be twisted therethrough: rotatable whorl means arranged substantially coaxially with regard to said tubular member and below the latter in spaced relationship thereto, hub means mounted on said whorl means for ro- 3 tation therewith, said hub means having outwardly extending flange means, annular bottom means connected to sm'd whorl meansbeing provided with a reduced diameter area arranged at a lever lower than said annular bottom means,

a balloon restrainer can arranged stationarily and having bottom surroundins said reduced diameter areas in spaced I a relationship thereto so as to confine therewith an annular gap, nozzle means adapted to be connected to a source of thread and yarn treating fluid and extending through said first and said second mentioned gaps, the mouth of said nozzle means being directed toward said flange means for hurnidifying a thread or yarn passing through the lowor end'offsaid tubular member and between said flange means and said bottom means and through said opening means, andsea1ingmeans supported by said can bottom 7 7- V 7 and sealingly engaging said reduced diameter area of said whorl means.

5. An arrangement according to claim 3, in which the bottom of said balloon restrainer can is provided with an access opening for permitting access to the interior of said can, and closure means normally closing said opening and adapted selectively to be opened.

6. In a double twisting spindle system having a substantially vertical tubular member for passing a thread or yarn to be twisted therethrough: thread accumulator disc means coaxially arranged with regard to said tubular member and rotatable about the lower end thereof, whorl means drivingly connected to said disc means for rotating the same, nozzle means adapted to be connected to a source of thread and yarn treating fluid and arranged below said disc means and eccentrically with regard to the axis of rotation of said disc means, the mouth of said nozzle means being directed toward said disc means for humidifying a thread or yarn passing between said nozzle means and said disc means, an annular upwardly flaring dish-shaped member connected to the peripheral portion of said disc means and having its upper marginal portion curved upwardly, a balloon restrainer can surrounding said disc means and having a bottom portion confining with said annular dish-shaped member a passage gradually decreasing in cross-section in the direction toward the outer marginal portion of said dish-shaped member for passing therethrough a thread or yarn humidified by said nozzle means, brake means operatively connected to said whorl means, said restrainer can bottom having an access opening therein for permitting access to the interior of said can, closure means operable selectively for closing and opening said access opening, and means operatively interconnecting said closure means with said brake means for automatically actuating the latter for braking action in response to the opening of said closure means.

7. In a double twisting spindle system having a substantially vertical tubular member for passing a thread or yarn to be twisted therethrough: thread accumulator disc means coaxially arranged with regard to said tubular member and rotatable about the lower end thereof, whorl means drivingly connected to, said disc means for rotating the same, nozzle means adapted to be connected to a source of thread and yarn treating fluid and arranged below said disc means and eccentrically with regard to the axis of rotation of said disc means, the mouth of said nozzle means being directed toward said disc means for humidifying a thread or yarn passing between said nozzle means and said disc means, an annular upwardly. flaring dish-shaped memberconnected to the peripheral portion of said disc means and having its upper marginal portion curved upwardly, a balloon restrainer can surrounding said disc means and having a bottom portion confining with said annular dish-shaped member a passage gradually decreasing in cross-section in the direction toward the outer marginal portion of said dish-shaped member for passing therethrough a thread or yarn humidified by said nozzle means, valve control means associated with said nozzle means for controlling the passage of fluid therethrough, said restrainer can bottom having an access opening therein for permitting access to the interior of said can, closure means operable selectively for closing and opening said access opening, and means operatively connecting said closure means with said control means and operable in response to the opening of said closure means to interrupt the flow of fiuid through said nozzle means.

8. In a double twisting spindle system having a substantially vertical tubular member for passing a thread or yarn to be twisted therethrough: thread accumulator disc means coaxially arranged with regard to said tubular member and rotatable about the lower end thereof, whorl means drivingly connected to said disc means for rotating the same, nozzle means adapted to be connected to a source of thread and yarn treating fluid and arranged below said disc means and eccentrically with regard to the aXis of rotation of said disc means, the mouth of said nozzle means being directed toward said disc means for humidifying a thread or yarn passing between said nozzle means and said disc means, an annular upwardly flaring dish-shaped member connected to the peripheral portion of said disc means and having its upper marginal portion curvedupwardly, a balloon restrainer can surrounding said disc means and having a bottom portion confining with said annular dish-shaped member a passage gradually decreasing in cross-section in the direction toward the outer marginal portion of said dish-shaped member for passing therethrough a thread or yarn humidified by said nozzle means, valve control means associated with said nozzle means for controlling the passage of fluid therethrough, said restrainer can bottom having an access opening therein for permitting access to the interior of said can, closure means operable selectively for closing and opening said access opening, thread control means having means adjacent the path of a thread or yarn passing through said tubular means and between said disc means and said nozzle means, and means operatively connecting said valve control means to said thread control means and adapted in response to a thread break sensed by said thread control means to adjust said valve control means for interrupting the flow of fluid through said nozzle means.

References flied in the file of this patent UNITED STATES PATENTS 2,671,304 Rowedder Mar. 9, 1954 2,715,308 Sousslofi et al Aug. 16,. 1955 2,803,939 Steele Aug. 27, 1957 FOREIGN PATENTS 225,559 Great-Britain Apr. 2, 1925

Claims

6. IN A DOUBLE TWISTING SPINDLE SYSTEM HAVING A SUBSTANTIALLY VERTICAL TUBULAR MEMBER FOR PASSING A THREAD OR YARN TO BE TWISTED THERETHROUGH: THREAD ACCUMULATOR DISC MEANS COAXIALLY ARRANGED WITH REGARD TO SAID TUBULAR MEMBER AND ROTATABLE ABOUT THE LOWER END THEREOF, WHORL MEANS DRIVINGLY CONNECTED TO SAID DISC MEANS FOR ROTATING THE SAME, NOZZLE MEANS ADAPTED TO BE CONNECTED TO A SOURCE OF THREAD AND YARN TREATING FLUID AND ARRANGED BELOW SAID DISC MEANS AND ECCENTRICALLY WITH REGARD TO THE AXIS OF ROTATION OF SAID DISC MEANS, THE MOUTH OF SAID NOZZLE MEANS BEING DIRECTED TOWARD SAID DISC MEANS FOR HUMIDIFYING A THREAD OR YARN PASSING BETWEEN SAID NOZZLE MEANS AND SAID DISC MEANS, AN ANNULAR UPWARDLY FLARING DISH-SHAPED MEMBER CONNECTED TO THE PERIPHERAL PORTION OF SAID DISC MEANS AND HAVING ITS UPPER MARGINAL PORTION CURVED UPWARDLY, A BALLOON RESTRAINER CAN SURROUNDING SAID DISC MEANS AND HAVING A BOTTOM PORTION CONFINING WITH SAID ANNULAR DISH-SHAPED MEMBER A PASSAGE GRADUALLY DECREASING IN CROSS-SECTION IN THE DIRECTION TOWARD THE OUTER MARGINAL PORTION OF SAID DISH-SHAPED MEMBER FOR PASSING THERETHROUGH A THREAD OR YARN HUMIDIFIED