DE2588C - Method and apparatus for bleaching cotton, regardless of whether it is loose, in strands or in tissues - Google Patents

Description

1877.

CHARLES WEBER-JACQUEL in PARIS.

Process and apparatus for bleaching cotton, regardless of whether it is loose, in strands or

in tissues.

Patented in the German Empire on October 5th, 1877. Longest duration: May 31, 1891.

The present invention consists in a perfected method and apparatus for Bleaching of cotton, be it on bobbins, bobbins or in strands, generally all articles, which are made of cotton.

The means used to this day required a previous cleaning of the Cotton, by washing it in boiling water, to remove the added to remove any foreign body preventing the bleaching process.

Apart from the quite inadequate work, these procedures incur great expense, a lot of waste, take a lot more time and transform the paper tubes that are turning in the bobbins, in a dough; all of this causes difficulties and demands great care when placing the bobbins on the spindles, be it for the purpose of winding, Twisting or weaving,

The main advantage of the process is that it saves the cotton or cotton from cooking cotton article is omitted entirely.

In addition there is the fact that the paper sleeves are not deformed and, finally, the bleaching the cotton takes place quite evenly.

In the accompanying drawings, Fig. 1 shows a front view and Fig. 2 shows a side view of two connected devices.

The procedure is as follows:

If the cotton yarn is wound up in bobbins, then these are either applied special spindles or not and packs them in sacks or boxes made of rubber respectively. Gutta-percha.

The boxes have such a shape that a certain number of them give the so-called. Hydro extractor just fills.

Wrapped in this way, the bobbins are brought into the apparatus AA ⁱ with cover CC and proceed as follows:

The air is sucked out of the apparatus by means of the pipe D by means of an air pump and a certain corresponding amount of water containing chlorine or chlorinated lime, which is located in the trough D, is let in through the pipe G ¹ and the opened valves E.

The chlorine-containing water can flow into the upper part of the apparatus A by means of the valve F and the pipe G and let it act from top to bottom.

If you then change the inflow by opening valve H , the chlorine-containing water will act on the material from below; In this way, the bobbins are completely penetrated by the bleaching liquid in a short time.

By opening the valves E ¹ H ¹ F ¹ on apparatus A ¹ , the bleaching liquid can be used in the same way in apparatus A ¹ instead of allowing it to flow back into trough B.

Once the liquid has been drained off, the air is sucked out of the apparatus again and a certain amount of water containing hydrochloric acid is allowed to enter the apparatus through pipe G ¹ , which water is in trough B ¹ .

This acidic water is drained through the pipe K after it has penetrated the bobbins. This operation is repeated a few times and finally the bleached objects are washed out by introducing water through the tube L and, if necessary, steaming the cotton a little.

N is a water level tube.

The bleaching liquor is prepared as follows: Chlorinated lime is placed in a drum T, Fig. 3, provided with a large number of small holes, the drum rotates in a metal box G and is rinsed with water by means of a shower E.

If the box G is filled with water, the water supply is interrupted. The excess water can flow into the cistern K through the overflow pipe P.

While the drum rotates, the water remains _{in the box for 2} hours and is then drained into the cistern K by means of the tap R , whereupon fresh water is run again on the drum, and so on, until the chlorinated lime is completely dissolved.

The solution remains calm for about five to six hours so that the solid parts can settle

Claims (2)

and is let at the beginning of the bleaching operation by the tap .S in the trough B, which is located in front of the cistern. . The tap S1 serves to drain the sediment in order to clean the cistern, which is necessary if one wants to obtain a good bleaching liquid. The taps S and ^ 1 are unevenly high for this purpose, so that a perfectly clear liquid flows out when S is opened, and a filter can be attached to the tap S in order to achieve this even more reliably. According to the inventor, this method of preparing the bleaching liquid is the simplest and most practical; however, the same reserves the right to bleach using chlorine gas, be it free or dissolved in water. Bleaching can be carried out in the same way with Javel's bleaching liquid, hypochlorous potash, soda or lime and so on. Before you take the bobbins out of the machine, you can give the cotton a nicer look by introducing blue water. Drying takes place in a drying chamber or through a. so-called hydro extractor. The apparatus used for drying is shown in Fig. 4 in longitudinal section, Fig. 5 in outline and Fig. 6 in cross section. In a room provided with double walls, tubes A are attached, above which two belts CC are guided, on which the wooden frames intended for receiving the bobbins etc. slowly pass the drying room. Depending on their nature and size, the objects to be dried remain in the drying chamber for a longer or shorter time, and a reversing gear with friction disks is arranged for this purpose, Fig. 5, so that in this way the objects can stay in the apparatus for up to 2 hours . At the end of the drying chamber there is an exhaust pipe F, which is provided with an ejector to increase the air flow. The openings in the lower part of the apparatus allow fresh air to enter and can be closed or opened as desired. To keep the belts taut, tensioning screws T1 T1 are arranged, by means of which the bearings of the rollers can be moved. The characteristic of this bleaching process consists in the avoidance of re-bleaching and in the fact that all operations are carried out by cold means. In this way one preserves the firmness and elasticity of the cotton, which is to a certain extent taken from it by boiling. Pat en τ-An Proverbs: 1. The method and apparatus for bleaching explained by the drawing and description of cotton in bobbins, bobbins, hanks or all articles made of cotton or in which there is cotton, as well as cotton from rags; in the essential, the treatment of the objects to be bleached in the vacuum and the application water containing chlorine, the subsequent treatment with acidified (hydrochloric acid) Water, the use of rubber as packaging for the bobbins in the apparatus. 2. The procedure for preparing the bleaching liquid from chlorinated lime, as well as the device the drying chamber as described and drawn. In addition 3 sheets of drawings.