US2053293A

US2053293A - Method and apparatus for treating yarn with liquid

Info

Publication number: US2053293A
Application number: US686591A
Authority: US
Inventors: Long Frederick Farwell
Original assignee: American Viscose Corp
Current assignee: Akzo Nobel UK PLC
Priority date: 1933-08-24
Filing date: 1933-08-24
Publication date: 1936-09-08
Anticipated expiration: 1953-09-08

Description

Sept. 8, 1936. F. F. LONG 2,053,293

METHOD AND APPARATUS FOR TREATING YARN WITH LIQUID Original Filed Aug. 24, 1933 Patented Sept. 8, 1936 UNITED STATES- PATENT OFFICE METHOD AND APPARATUS FOR TREATING YARN WITH LIQUID Application August 24, 1933, Serial No. 686,591 Renewed May 4, 1935 12 Claims.

'10 struction of apparatus for this purpose.

In the accompanying drawing Figure 1 is a vertical section through apparatus for carrying out the process, both according to the preferred embodiment of the present in- 15 vention,

Figure 2 is a detail elevation of a part of the structure shown in Figure 1, and

Figuresii and 4 are modifications of Figure 2.

The present invention is adapted for use with 20 an ordinary bleaching machine, such as described in Patent No. 1,116,242 issued November 3rd, 1914 to James Clayton, the drip tank 35 of which is shown, stationarily supported above the framework of the machine by brackets 4, and perforat- 25 ed to cause a rain or series of small streams of treating liquid to drip therefrom.

According to the present invention, a crate or carrier 5 is provided, being supported by trunnions 6 secured to the sides of the carrier. These 30 trunnions take the place of the ordinary bleach rod in the old machine hereinbefore referred to. These trunnions 6 rest in sockets l, which are moved along by the machine, causing the carrier 6 to pass horizontally under the drip pan 3|.

35 The yarn is supported in the carrier on rods 8 which extend horizontally therein, but are arranged to support the yarn in inclined position, each rod being higher than the next outer rod. The carrier 5 is substantially water tight, but is 4 provided with a drain valve 10 at or. near the bottom thereof.

A lever H has one end connected to the valve 50, and the other end forming a follower 9 coacting with a cam i2 mounted on the stationary frame of the machine. A spring l3 normally holds the valve 110 closed.

In operation the skeins of yarn M are preferably wrapped in open mesh cloth, such. as cheese cloth or tobacco cloth, and placed in the carrier 5, being supported by the rods 8 in the inclined position shown. The machine then moves the carrier horizontally, under the streams of treating liquid dripping from the pan 311. The liquid 55 passes through the skeins, and as the rods 8 support the same only at intervals, the liquid passes on down between the rods.

The spring l3 holds the valve l0 closed, so that the treating liquid is trapped in the carrier 5, and the level thereof rises as the carrier moves forward, gradually immersing the skeins. Then the follower 9 engages the cam l2 causing the lever I l to open the valve II]. This permits the trapped pool of treating liquid to drain out of the carrier 5. 10

When the follower 9 rides off the cam 02, the spring i3 closes the valve l0, and the carrier 5 again begins to fill with treating liquid trapped therein from the streams dripping from the tank 3!. It will be understood that there are a number of cams l2 spaced along the path of the carrier 5, and the tank 3! extends therealong so that the filling and draining of the carrier is continued alternately along the horizontal path thereof through the machine.

Because the bundles of yarn M are tilted at an angle, any air within the bundles is lifted by the liquid to one end of the bundles where it will not prevent proper penetration ot'the liquid. Also the immersion tends to dislodge the air, and the alternate dripping and immersing of the inclined bundles further tends to the elimination of air bubbles.

As contrasted to the former methods, the present invention results in the diamonds in the skeins remaining more clearly defined, the lacings are not washed around the skeins, the bagginess of the skeins is eliminated, and the twist of the yarn is better preserved as it is not washed to one end of the skein. Furthermore, broken filaments if present are not washed into adjacent threads to cause matted condition, and the skeins are protected by the wrapping thereof, from mechanical damage by impact of the treating liquid.

It is obvious that alternate methods may be used to discharge rapidly the liquor from the carrier after this liquor has attained a pre-determined height. For example, a siphon arrangement 20 as shown in Fig. 3 may be used, or a valve operated by a float control 22 as shown in Fig. 4. Thus various means may be used to bring about a fundamental idea of the invention, namely, the repeated immersion of the yarn in the treating liquor with alternate draining therefrom.

I claim:

1. Method of treating yarn with liquid, which comprises dripping treating liquid on the yarn, collecting a bath of said treating liquid, maintaining said yarn oblique to the surface of said bath, raising the surface of said bath to immerse said yarn therein and thereafter draining said bath, and alternately repeating said immersion and draining steps while continuing said dripping.

2. Method of treating yarn with liquid, which comprises causing treating liquid to drip on the yarn, collecting a bath of, said treating liquid, maintaining said yarn at a constant acute angle to the free surface of said bath, raising the level of said free surface to immerse said yarn therein and thereafter draining said bath, and alternately repeating said immersion and draining steps while continuing said dripping.

3. Method of treating yam with liquid, which comprises dripping treating liquid on the yarn, collecting a bath of treating liquid, maintaining said yarn at an acute angle to the free surface of said bath, raising said surface to pass the' treating liquid upward through and immerse said yarn, draining said bath, arid alternately repeating said draining and immersion steps while continuing said dripping.

4. Method of treating yarn with liquid, which comprises dripping treating liquid on the yarn, collecting a bath of treating liquid, maintaining said yarn at an acute angle to the free surface of saidbath,raisingsaid surface to cause said bath to pass the treating liquid upward and immerse said yarn, draining said bath, and alternately repeating said draining and immersion steps while moving said bath and said supported yarn horizontally as a unit and while continuing said dripping.

5. Method of treating skeins with liquid, which comprises wrapping said skeins with open mesh cloth, dripping treating liquid on said wrapped skeins, collecting a bath of said treating liquid, maintaining said wrapped skeins oblique to the surface of said bath, raising the surface of said bath to immerse said wrapped skeins therein and thereafter draining said bath, and alternately repeating said immersion and draining steps while continuing said dripping.

6. Apparatus for treating yarn with liquid, which comprises means for dripping treating liquid on the yarn, means for collecting a bath of said treating liquid, means for maintaining said yarn oblique to the surface of said bath, means for raising the surface of said bath to immerse said yarn therein and thereafter draining said bath, and means for alternately repeating of said immersion and draining steps while continuing said dripping.

'7. Apparatus for treating yarn. with liquid, which comprises means for causing treating liquid to drip on the yarn, means for collecting a bath of said treating liquid, means for maintaining said yarn at a constant acute angle to the free surface of said bath, means for raising the level of said free surface to immerse said yarn therein and thereafter draining said bath, and means for alternately repeating said immersion and draining steps while continuing said dripping.

8. Apparatus for treating yarn with liquid, which comprises means for causing treating liquid to drip on the yarn, means for collecting a bath of treating liquid, means for supporting said yarn at spaced intervals to maintain said yarn at an acute angle to the free surface of said bath, the area between said supported intervals being sufficient to permit vertically through the yarn, means for raising the level of said free surface to cause said bath to pass upward between said supported intervals the treating liquid to pass,

and immerse said yarn, means for draining said bath, and means for alternately repeating said draining and immersion steps while continuing said dripping.

9. Apparatus for treating yarn with liquid, which comprises means for causing treating liquid to drip on the yarn, means for collecting a bath of treating liquid, means for supporting said yarn at spaced intervals to maintain said yarn at an acute angle to the free surface of said bath, means for raising the level of said free surface to cause said bath to pass upward between said supported intervals and immerse said yarn, means for draining said bath, means for alternately repeating .said draining and immersion steps, and means for moving said bath and said supported yarn horizontally as a unit while continuing said dripping.

10. Apparatus for treating yarn with liquid, which comprises a frame, an elongated drip tank supported thereon, a carrier tank, means in said tank for supporting skeins of yarn therein at an acute angle to the horizontal, means for passing said carrier tank with the skeins supported therein along said frame under said drip tank, a valve in said tank, means spaced along .said -frame within the extent of said elongated drip tank for periodically opening said valve, and means for periodically closing said valve between said opening intervals.

11. Method of treating skeins of yarn comprising twisted filaments wound with a traverse forming diamonds, which comprises wrapping the skeins with open mesh fabric, supporting the wrapped skeins, moving said supported skeins along a horizontal path, causing treating liquid to drip on the wrapped and supported skeins from points closely spaced and substantially uniformly distributed along said path as a rain and pass through said fabric cover and the skein therein, whereby the skein is protected by said cover from mechanical damage by impact of said rain of, treating liquid, and the diamonds in the skein and the twist of the yarn are protected from disarrangement by the flow of treating liquid, and causing a pool of treating liquid supported and moving with said skein to accumulate from said rain and the level thereof to rise within said cover and immerse at least a portion of the skein therein.

12. Method of treating skeins of yarn comprising twisted filaments wound with a traverse forming diamonds, which 'comprises first wrapping said skein so formed and wound in a cover of open mesh fabric permitting passage of treating liquid but of sufficiently close mesh to protect said filaments, supporting said wrapped skein, moving said supported and wrapped skein in ahorizontal path, dripping treating liquid as a rain on said wrapped and supported horizontally moving skein from points closely spaced and substantially uniformly distributed along said path, whereby said liquid passes through said cover and the skein therein but said filaments are protected from mechanical damage due to impact of said rain and said diamonds in the skein and the twist of the yarn are protected from disarrangement by the flow of treating liquid, accumulating a pool of treating liquid from said rain while moving said pool horizontally with said skein, and raising the level of said pool and thereby immersing at least a part of said skein in said cover while the skein is moving horizontally and being subjected to said rain.

FREDERICK FARWELL LONG.