US1935261A

US1935261A - Conditioning of yarn

Info

Publication number: US1935261A
Application number: US612612A
Authority: US
Inventors: Dulken Charles Friedrich
Original assignee: Individual
Current assignee: Individual
Priority date: 1931-06-03
Filing date: 1932-05-20
Publication date: 1933-11-14
Anticipated expiration: 1950-11-14

Description

Nov. 14, 1933. c. F. DULKEN 1,935,261

CONDITIONING OF YARN Filed May 20, 1932 3 Sheets-Sheet l C. 9 Dal/(e VWm/M Nov. 14, 1933. c. F. DULKEN 1,935,261

I CONDITIONING OF YARN Filed May 20; 1932 I5 Sheets-Sheet 2 3 Sheets-Sheet 5 Nov. 14, 1933. c. F. DULKEN CONDITIONING OF YARN Filed May 20, 1932 Jaw c ZELMA? mi m Patented Nov. 14, 1933 airs 1,955,261 v CONDITIONING oF-Y'AiiN chimes Friedrich Dulken; Arlingtom'N; VJ:

Application May 20, 1932,

s in Germany June 3,

11 Claims. rol}. zs' -ss) This invention relates to a method of and apparatus for the Conditioning of yarn. It is known to moisten the yarn I, have been prepared in the spinning mill, because the yarn becomes very dry owing to the spinhing process. The moistening is necessary in or der that the yarn may retain its properties independently of the time of year, the locality, the

durationoi storage, and any alteration in temperature. It is also already known to add to the moistening liquid an anticeptic or preserving addition. Great difficulties have hitherto been experience'd in attaining a complete and'uniform' penetration of the yarn bobbin by the moistenmg liquid. V l

In my co-pending United States patent application No. 422,273 of 21st January, 1930, I have already proposed a method and apparatus according to which the yarn bobbin is wound 2 upon a hollowperforated core, and the liquid, or' a mixture of air and liquid is forced outwards from theinterior of the bobbin through the body of yarn. In the apparatus a number of yarn bobbins are treated simultaneously, and are connected to a common liquid supply pipe.v This apparatus has the disadvantage that a distribu tion of the liquid to each individual body of yarn in equal quantities is difficult to attain.

The present invention supplements that mething liquid for each individual yarn bobbin and forcing it through the body of yarn by means of compressed air. ceives'exactly the desired moistening, as a result improved. a

The process is'preferably carried out by the measured quantityof liquid being sucked up by the compressed air, whereupon the mixture of liquid and air penetrates through the body of yarn. The liquid may however alternatively be moved forward-by compressed air acting upon it from behind. A combination of these two methods is alsopossible. r I In the case of the method set forth in my copending application the liquid penetrates through the body of yarn in an outward direction. According to the present improvement the liquid may alternatively flow inwards from the outside. The apparatus for carrying out thisprocess is characterized by the fact that for each individual yarn bobbin there is provided a measur-' ing vessel which is tobe filled from a reservoir, and flOfil'WhiCh a pipe leads to the carrying body bundles or bobbins which I ed by measuring a definite quantity of moisten- Each bobbin therefore re-' of which the quality of the product is greatly Serial No. 612,612, and

that re'cive's the bobbin, to which a separate compressed air pipe-also leads in each instance.

The apparatus-is'preferably so designed that the liquid-pipe opens centrally in the interior of thecompressed air pipe by means of a nozzle in the manner of an injector, the mouthpiece of the injector being at the same time constructed in'its upper portion as a carrying seat for the bobbin of yarn. While the apparatus according to my other invention, mentioned aboveyis in tended for the simultaneous treatment of a pm; rality of'yar'n bobbins, by the present-improvement a device is provided which islapp'licable both for'the reception and treatment of a pinra-lity of yarn bobbins and'also for the reception and treatment of" a single yarn bobbin. This constructional form" is" particularly suitable for operating on a small scale.-* Further details of the invention will be gathered'fro'm thefollowing description and from the drawings and claims. 5 The invention is'illustratedin various constructional examples in the accompanying drawings; in'which' f. 1. Figure 1 is a longitudinal section through ap paratus' according to the'invention for treating; a single bobbin of yarn, the liquidbeingforced' outwards from the interior 'ofjthe bobbin.

Figure 2 is a similar longitudinal section of'a form of construction in which'the liquid flows inwards from the outside; v I 1 Figure 3 is a diagrammatic side view of' apparatus according to the invention for the treatment of a plurality of yarn bobbins. i v, Figure 4 isa diagrammatic front view thereof, and Figureb is a. diagrammatic plan thereof.

Figure- 6 is a. longitudinal section through an' individual moistener of the apparatus shown in Figures? to 5. I Fig. 6a is a fragmentary side elevational detail of the arrangement shown in'Fig. 6 showing particularly the use of av bar with 'a plurality of moisteners; 1

Figure 7 is a similarlongitudinal section of another constructional form,-and Figure 8 is aplan' of apart of Figure '7. The. constructional form of. the invention shown Figure l is intended for the treatment of a single bobbin. The individual treatment" is particularly advantageous when it is a: question ofimoistening rather large bodiespof' yarn, particularly cross wound bobbins or -.c onical bobbins, The apparatus according toFigure 1 is I also suitablefor operation on a smaller scale.

The moistening medium is supplied through 110 piping 1 from a measuring vessel. The contents of the measuring vessel may be adjusted in a known manner by means of a plunger, a diaphragm or otherwise.

The piping 1 opens in the foot 2 of themoistener, by means of a nozzle 3, which stands centrally in the vertical axis of the apparatus. Into the cavity in the foot 2 there opens at the side a pipe 4, which supplies compressed air, and is equipped with a control valve or cock 5. The foot 2 of the apparatus is continued upwards in a spindle 6, which is designed to carry the bobbin of yarn. The spindle 6 has a central bore at the lower end, and is provided with lateral outlet apertures '7. The entire arrangement acts as an injector. The yarn bobbin consists of an inner tube or sleeve 8, perforated on its periphery, made of cardboard or other suitable material, and the body of yarn 9 wound upon this tube. The inner tube 8 is mounted in a fluid-tight manner at the bottom upon a conical transition part of the spindle 6. The spindle 6 and the tube 8 might alternatively be made conical throughout as shown for example in Fig. 7.

From the foot 2 of the nioistener there extends sideways and upwards an arm 10, which is provided at the top with two positioning rings 11. Between these rings a bush or sleeve 12 is retatably but non-slidably fitted. To a pin 13 on the bush 12 is pivoted a plate 14, to the under side of which is secured a sealing stopper 15 of indiarubber or the like. The stopper 15 bears upon the upper end of the yarn tube 8 in the working position and closes it in a fluidtight manner. To the bush 12 is rigidly secured a carrying arm 16, which has at its free end a pivot 17 for a hand lever 18. The pivot 17 is located approximately in the longitudinal axis of the spindle 6. With the lever 18 a cam 19 is integral, which acts against the pressure plate 14. The cam 19 is so shaped that when the hand lever 18 is rotated in a clockwise direction it acts first as an eccentric upon the plate 14, and thereby presses the tube 8 down firmly and seals it at both ends. Upon further rotation of the lever 18 the cam 19 passes over the plate 14 with a portion of its surface which is concentric with the pivot 17, so that the pressure upon the yarn bobbin is no longer increased, but

- the lever locks itself. Upon still further rocking,

the lever 18 pushes against a control rod 20, which is longitudinally slidable in a guiding arm 21. secured to the foot 2, and presses this rod downwards. The lower end of the control rod 20 is pivotally connected with the positioning lever of, the valve 5, so that the valve is opened. At the same time a spring 22 is compressed.

' The apparatus acts in such a way that, after the mounting of the yarn bobbin to be moistened, the sealing of. the sleeve 8 at the top and bottom is first effected, and only then is the compressed air pipe 4 opened. The'compressed air flows out and sucks up the liquid from the measuring vessel, whereupon the mixture of liquid and air moves through the bores of the spindle 6 and the perforations of the sleeve 8 into the yarn body 9, which it penetrates radially outwards from inside. Only the liquid specially measured for this one bobbin is sucked up and forced through, so that the bobbin is moistened exactly to the extent desired in all its parts. An excellent eifect is thereby produced. 7

Furthermore the operation of filling and emptying the measuring'vessel may be positively connected, in a manner known in itself, with the a common liquid measuring device, which may actuating of the lever 18 and the control rod 20, in such a way for example that when the lever 18 is raised, that is to say, when the air valve is closed and the yarn bobbins released, a measuring vessel of adjustable capacity is filled with the moistening liquid, and when the lever 18 is depressed, that is to say, when the body of yarn is pressed down and the air valve is opened, the measuring vessel is emptied into the liquid pipe. The followin arrangement is also advantageous.

the purpose of increasing the production two of the individual appliances described are placed side by side and are operated alternately by one worker. These two appliances then have be provided with two measuring chambers, separated by a diaphragm, actuated alternately, and adapted to be connected in a manner known in itself with the two moistening appliances. The constructional form according to Figure 2 is distinguished from the one described by the fact that the inoistening liquid does not flow through the body of yarn in an outward direction from the inside but in the opposite direction. The lower portion or" the moistener agrees with that of Fig- The pipe for the liquid is marked 31, the outlet nozzle the compressedair pipe 34, and the control valve thereof 35. The foot 82 of the device widens out in an upward direction to a cylind ical or other casing, which may have a double wall. In thelatter case the outer wall 36 not perforated, while the inner wall 3'? andfthe inner bottom 38 are provided with numerous perforations. The lid 39 of the casing, which closes in a fluid-tig-.t manner all round, is hinged, and has in the middle on its under side a stopper or plug 40 of indiarubber or the like. The lower end of the tube l1 bears in a fluid-tight manner upon a projection 42 in the base of the casing. The stop er 40 is longitudinally bored through, and the lid 39 is bored through in the middle. These bores form an air vent. On the side of the easing 36 a lever 43 is rotatably mounted about a pivot 44. The lever 43 is equipped with a hook d5, which can engage over a pin 45 which is carried by two lateral lugs or projections on the lid 39. The 45 is again eccentrically shaped in sucha way that it at first tends to press the lid 39 down firmly when the lever 43 is moved in an anti-clockwise direction. The inner portion of the hook i5 is however concentric with the pivot i l. The lever i3 is again connected by a coupling rod 4:7 with the lever 48 of the valve 35.

After the bobbin of yarn has been inserted in the container the lid 39 is closed. This may be 139 provided round the margin with sealing means, 39 2). The vessel is hereby sealed while the indiarubber stopper (10 at the same time presses down the tube 41 of the yarn bobbin against the projection 42 so as to close the lower end of the tube in a fiuid-tight manner. Only after this has been done is the valve 35 opened, by further shifting of the lever 43. The comed air sucks in the inoistening liquid, and the mixture passes into the hollow space between outer wall 36 of the vessel and the inner wall and. bottom 37 and 38. The escaping mixture penetrates through the body of yarnin an inward direction, the air present in the vessel and in the body of yarn being able to escape through the duct in the indiarubber stopper ill. The body of yarn is therefore again accurately moistened to the desired extent.

After the termination of the moistening, and before the lid 39 is opened again, any pressure pregear-for tilting the distributor 56, are preferably j cell in the vessel 56.

this foot theliquid pipe. 58 opens.

this. pipeis closed by. an exchangeablennozzlep63.:

vailing in.-.the interior of the .vesselmaypreferably be relaxedz... 3; 1

The form or construction of the-invention illus trated in Figures. 3 to." Ms intended for the simultaneous treatment. ofa plurality of bobbins of yarn. .The main partsare only diagrammatically indicated;.- I From a reservoir themoistening liquid flows to a measuring vessel 51*,by natural descentfor example; 1

From the measuring .vessel 5l.the liquid passes i-ntoggar'i'elongated distributing vessel-52,:which is subdiv'idedby partitions into a rather large .num-.' ber of individual cells or compartments: 51. For each yarn bobbin one such :cell'53; is provided. The-"partitions'i-a're interrupted at their lowest points-by apertures 54,-so that the liquid adjustsitself to the sameheight in all thecells 53v by theprinciple of communicating tubes.. Eachcell .53 i's'providedat the top withv a littlepouringtub 55.: TheYdistributingpvessel is lodged in :a long rcceiving'vessel 56 and. is rotatable about its'longitudinal. axis. The receiving vessel 56 is alsosubdividedby partitions 5.7 into individual cells equal in number to thecells 53. From each of these cells a' pipe 58 leads to a different moistener upon the machine frame; When the vessel 52 is tilted about its longitudinal axis. each cell- 53 .pours its contents, which are equalin every case, into a To each yarn bobbin there is therefore supplied by its particular pipe58 exactly the same accurately measured, quantityoi liquid; z V

:The moistenersthemselves are indicatedas a:

1 whole. in Figures 3 to. 5 by 59, and: are arranged in. three parallel straight rows; The connecting pipes 58 whichqconvey the liquid to the moisteners 5.9,"are 'shownbroken' off in Figure 4 for the sake of clearness,.while in Figure 5 only a few of them are shown The pipes 58 open in the feet of. the individual; moisteners. in the manner illustrated at. l; and 31':respectively in. Figures 1 and 2. To the feet of thenmoisteners there also lead the, compressed-air pipes.60,. which are suppliedwith air by a main pipe.

' Figure 6 shows thearrangem'ent of. anindividual moistenen: By 61- is illustrated a horizontal bar .of the machine .frame,. on to'which the foot 62 .ofrthe moisteneris secured witha'screw. In The. end of The. nozzle63lis again locatedin a chamber in,

the manner. of. anfinjector, in which theresfur-j I thermoreopens laterally. the compressed air pipe; 1 60.. LID the latter may be interposed a valve 64;

which establishes communication with the. main pipe 92. is again screwed at the top a longitudinally. bored spindle. 65, over which the perforated. tube..66 of the yarn body 67-is slipped. Thetube .66 is pressed firmly onto its seat by a bar. 68, with an india-: rubber stopper 69. The bar68 runs longitudinally through the machine andserves at the samev time for pressing, down a plurality of yarn tubeszas in.-- dicated diagrammaticallyinFig. 6a; .When the compressedair pipe '60 opens,- the air sucks inthe quantity of liquid poured. out in. the distributor 56. and forces it through itoutwards through the body of, yarn from the interior.

The various'cocks of theplantfahd also the coupled together in such away "that the entire operation proceeds in the prescribed sequence; For this purpose there-is supported onthe-machine frame a shaft -90, with ahandwhe'el- 91 and- Upon the base. body 6210f themoistener this shaft isconnected' by gearing. 94iand sprocket wheelsv95-andxchain 96 with the rotatable stem 97*of the valve which controls the-passage ofliquid from the tank 51 to the tiltable vessel '52, the. arrangement of the gearing, sprocketand chain" wheels being such that on' every fourth revolution of the'hand' wheel 91 the valve will be opened. In, addition bevel gearing 98 is provided between theshaft 90. and the sprocket and chain devicalOUxwhich is cormected with the tiltable' vessel :52 so as to ensure of :the proper tilting of this vessel in timed relation with the operationof the valve 90. Another sprocket andchain connection 100 is provided between the shaft90 and thevalve 101 which controls the passage of compressed air through the compressed air pipe;

Further gearing 102 is provided between the shaft" 90 and the stem of the valve 103 which controls the passage of compressed air from the pipe 92. tothepipes 58. By continuing the rotation of the hand-wheel 91 the following operations are positively brought about in their 0rder:-Mea's*- urement of the quantity of liquid requiredffo'r one charging of the'machine in the measuring vessel 51; dischargingthe contents'of'the measur ing vessel 51 intoithedisziributingvessel 52; tilt-1 ing the distributing vessel; opening the compressed air' pipes 60'; and ventilating the air pipes after completely. forcing the'liquid through the bodies of yarn, in order that the airipipesi may be ready for. the'next operation. By thispositive" successionof the individual operations by'means of. a. main controlling mechanism, faults in Op-f crating are. avoided. Pr'eferably eachrevolution ofthe hand-wheel '71 brings about a distinct operation. y

In Figures '7 and}; isi'llustrated a construe tional form of moistener, which is primarily sult-v able for conical yarn'bobbins. ,Theconical spindle .70. is again secured with a screw upon the foot 62 of the moistener, as illustrated in Figure 6. The spindle is longitudinaliyibored but 'isclosed at the top. Moreover a number of radial bores 'll'lead' outwards'with a downwardinclina-" tion.. The yarn tube =72 is provided With'suitable perforations '73, which'are preferably somewhat larger than the ducts 71. The yarn tube '72is mounted in a fluid-tight manner upon the spindle? '70, and is for this purpose pressed onto it. i This has the advantage that. the interior of the yarntube '72 remains dry, and thewhole of the mois tening. liquid penetrates directly "into the yarn body 974. In order that: the holes 73 may be exactly overthe'holes 71 the yarn tube 72 is provided' at the bottomin itsperipheral surface with a recess which engages over a transverse.- pin '76 on the spindle '70. I

Since the raised internal pressure durin'gthe moisteningi tends to lift the yarn' bobbin off the spindle 70 a special device is provided forhold ingthe yarn tube firmly on the spindle. The drawings illustrate-the fastening device, which consists of grippers 77, which are rotatably mount ed. at thelbottom of the spindle '70; and which can engage'with their upperhooks in apertures 78inthe peripheralsurface' of the yarn tube-"72. The grippers" '77 are double levers, the lower armsof which slide in eccentric slots 79 ina positioning disc 80. -By rotating the disc through a small angle upon the :foot of'the spindle '70 theyarn tube 72-can thus be firmly pressed on to the divided at the top into theliquid pipes 58. When the liquid hasbeen distributed into the pipes 58, air pressure can be admitted behind the liquid columns by opening the pipe 93. This pressure effect may be added to the injector-like suction effect of the pipes 60. The arrangement may of course be such that only the pressure effect behind the columns of liquid comes into action.

The discharge of the air from the pipe 93 into the distributing vessel 56 is prevented by nonreturn valves 58 in the pipes 58 shown diagrammatically in Fig. 3.

I What I claim is:

. 1. Apparatus for conditioning yarn wound into bobbins, comprising a measuring vessel for each individual yarn bobbin, areservoir for supplying moistening liquid to the individual measuring vessels, carrying bodies for the individual yarn bobbins, separate pipes for conveying liquid from the individual measuring vessels to the individual carrying bodies, and separate compressed air pipes leading to the individual carrying bodies.

2. Apparatus for conditioning yarn wound into bobbins, comprising a measuring vessel for each individual yarn bobbin, a reservoir for supplying moistening liquid to the individual measuring vessels, carrying bodies for the individual yarn bobbins, separate pipes for conveying liquid from the individual measuring vessels to the individual carrying bodies, and separate compressed air pipes lea-ding to the individual carrying bodies, the pipes for liquid opening centrally inside the compressed air pipes in such a manner as to form injectors, a carrying seat for the yarn bobbin on the upper part of each of the carrying bodies, and an injector mouthpiece adapted to discharge air and water through the carrying seat.

3. Apparatus for conditioning yarn wound into bobbins, comprising a measuring vessel for each individual yarn bobbin, a reservoir for supplying moistening liquid to the individual measuring vessels, carrying bodies for the individual yarn bobbins, separate pipes for conveying liquid-irom the individual measuring vessels to the individual carrying bodies, and separate compressed air pipes leading to the individual carrying bodies, the pipes for liquid opening centrally inside the compressed air pipes in such a manner as to form injectors, a carrying seat for the yarn bobbin on the upper part of each of the carrying bodies, an injector mouthpiece adapted to discharge air and water through the carrying seat, lever mechanism adapted to press the yarn bobbin into fluid-tight contact with its carrying seat, a valve controlling the supply of compressed air, and means such as a coupling rod connecting the lever mechanism with the valve in such a way that the valve is only opened after the yarn bobbin is resting firmly upon its seat.

4. Apparatus for conditioning yarn wound into bobbins, comprising a measuring vessel for measuring the quantity of moistening liquid required for anindividual yarn bobbin, a carrying body for an individual yarn bobbin, a pipe for conveying liquid from the measuring vessel to the carrying body, a pipe for supplying compressed air to the carrying body, the pipe for liquid opening centrally inside the compressed air pipe in such a manner as to form an injector, a carrying seat for the yarn bobbin on the upper part of the carrying body, an injector mouthpiece adapted to discharge air and water through the carrying seat, lever mechanism including a cam comprising an eccentric element adapted to press the yarn bobbin into fluid-tight contact with its carrying seat and a concentric element adapted to produce a self-locking efiect, a valve controlling the supply of compressed air, and means such as a coupling rod connecting the lever mechanism with the valve in such a way that the valve is only opened after the yarn bobbin is resting firmly upon its seat, and the concentric element of the. cam has come into operation.

5. Apparatus for conditioning a plurality of yarn bobbins simultaneously, comprising a tiltably supported elongated distributing vessel, partitions subdividing the distributing vessel into a number of compartments corresponding to the number of bobbins to be treated, the partitions being formed with apertures at their lowest points by which the compartments all communicate with one another, a measuring vessel for supplying a predetermined quantity of moistening liquid to the distributing vessel, carrying bodies adapted to support the individual yarn bobbins and admit moistening fluid thereto, separate pipes for conveying liquid to the individual carryingbodies, each compartment of the distributing vessel being adapted to empty its contents into one of these pipes when the distributing vessel is tilted, and separate compressed air pipes leading to the individual carrying bodies. a

6. Apparatus for conditioning yarn wound on tubes to form bobbins, comprising a measuring vessel for measuring the quantity of moistening liquid required for an individual yarn bobbin,

a carrying body for an individual yarn bobbin,"

a pipe for conveying liquid from the measuring vessel to the carrying body, a pipe for supplying compressed air to the carrying body, a spindle mounted on the carrying body to carry the bobbin, latches rockably mounted in the spindle, the bobbin tube being formed with apertures adapted to engage with the latches, and a manually rotatable eccentrically slotted disc for oscillating the latches at will into a position in which they engage in the said apertures and into a position in'which they are located wholly within the spindle.

7. Apparatus for conditioning yarn wound on tubes to form bobbins, comprising a measuring vessel for measuring the quantity of moistening liquid required for an individual yarn bobbin, a carrying body for an individual yarn bobbin, a pipe for conveying liquid from the measuring vessel to the carrying body,.a pipe for supplying compressed air to the carrying body, astopper of resilient impervious material such as india rubber adapted to be applied to the top of the bobbin tube, and means for pressing the stopper firmly on to the yarn tube against the pressure of the compressed air in the tube.

8. Apparatus for conditioning a plurality of yarn bobbins simultaneously, comprising a tiltably supported elongated distributing vessel, partitions subdividing the distributing vessel into a number of compartments corresponding to the number of bobbins to be treated, the partitions being formed with apertures at their lowest points by which the compartmentsall communicate with one another, a measuring vessel for supplying a predetermined quantity of moistening liquid to the distributing vessel, carrying bodies adapted to support the individual yarn bobbins and admit moistening fluid thereto, separate pipes for conveying liquid to the individual carrying bodies, each compartment of the distributing vessel being adapted to empty its contents intoone of these pipes when the distributing vessel is tilted, 150

separate compressed air pipes leading to the individual carrying bodies, valves controlling the supply of compressed air, means for venting the compressed air remaining in the apparatus after the moistening liquid has been forced through the yarn, and switching plant adapted to bring vessel, the tilting of the distributing vessel, the

opening of the compressed air valves, and the venting of the residual compressed air.

9. Apparatus for conditioning yarn wound on tubes to form bobbins, comprising a carrying vessel adapted to enclose an individual yarn bobbin in a fluid-tight manner, a measuring vessel for measuring the quantity of moistening liquid required for an individual yarn bobbin, a pipe for conveying liquid from the measuring vessel to the carrying vessel, a pipe for supplying compressed air to the carrying vessel, means for admitting the liquid and compressed air to the space between the external surface of the bobbin and the internal surface of the carrying vessel, the bobbin tube being perforated to enable compressed air that has passed. inwards through the yarn to escape into it, and means for sealing the ends of the bobbin tube against the compressed air in the interior of the carrying vessel, the said sealing means and the carrying'vessel being formed with apertures registering with one another through whichgair can escape from the interior of the bobbin tube to the atmosphere.

10. Apparatus for conditioning yarn wound on tubes to form bobbins, comprising a doublewalled carrying vessel adapted to enclose an individual yarn bobbin in a fluid-tight manner, the inner wall of the carrying vessel being perfo rated, a measuring vessel for measuring the quantity of moistening liquid required for an invidual yarn bobbin, a pipe for conveying liquid from the measuring vessel to the carrying vessel, a pipe liquid .reverse direction, to close f or supplying compresed air to the carrying vessel, means for admitting the liquid and compressed air to the space between the double walls of the carrying vessel, the bobbin tube being perforated to enable compressed air that has passed inwards through the yarn to escape into it, and means for sealing the ends of the bobbin tube against the compressed air in the interior of the carrying vessel, the said sealing means and the carrying vessel being formed with apertures registering with one another through which air can escape from the interior of the bobbin tube to the atmosphere.

11. Apparatus for conditioning yarn wound on tubes to form bobbins, comprising a double-walled carrying vessel adapted to enclose an individual yarn bobbin, the inner wall of the carrying vessel being perforated, a lid adapted to close the carrying vessel in a fluid-tight manner, a stopper in the middle of the lid adapted to seal the upper end of the bobbin tube in a fluid-tight manner from the interior of the carrying vessel, the lid and the stopper being formed with apertures through which the. interior of the bobbin tube communicates with the atmosphere, a measuring vessel for measuring the quantity of moistening liquid required for an individual yarn bobbin, a pipe for conveying liquid from the measuring vessel to the carrying vessel, a pipe for supplying compressed air to the carrying vessel, a valve controlling the supply of compressed air, means for venting the compressed air remaining in the apparatus after the moistening liquid has been forced through the yarn, and lever mechanism for pressing the lid and stopper firmly on to the carrying vessel and bobbin tube and subsequently opening the compressed valve, and same lever mechanism being adapted, when actuated in the the compressed air valve, then vent the compressed air remaining in the apparatus, and then release the lid and stopper.

. CHARLES FRIEDRICH DULKEN.