US1227361A - Process of rendering textile fabrics antique. - Google Patents

Description

MOVSESS B.A'DOM, OF WHITE PLAINS, NEW YORK.

L OFFICE.

PROCESS OF RENDERING TEXTILE FABRICS, ANTIQUE.

No Drawing.

To all whom it may concern.-

Beit known that I, Movsnss B. ADoM, a"

citizen of the United States, and a resident of l/Vhite Plains, county of VVestchester, and State of New York, have invented a new and Improved Process, of Rendering Textile Fabrics Antique, of which the following is a full, clear, and exact description.

' My invention relates to a process for rendering textile fabric antique, and it has reference particularly to the process for rendering tapestry antique, and more particularly oriental rugs. The object of the invention is-to provid a simple, inexpensive, rapid and efficient process whereby newly manufactured textile fabrics can be rendered antique by reducing the brightness of thecolors and giving a luster to the fabric. The ordinary process employed at present is very slow, as the reducing ofdifi'erent colors, Whether anilin or vegetable, or both, is done insuccessive steps requiringa great-deal of time and care.

With my process the subduing of the colors, no matter of what nature, is obtained by means of a single bath in which the reduction of the colors is obtained, while the Whites of the fabric are prevented from being discolored. The textile fabric to be rendered antique, that is, the colors'of which are to be subdued, is treated as follows:

After the preliminary cleaning, the fabric is immersed in a bath containing the following ingredients, having the following proportions by Weight: caustic soda, 1 per cent; and sodium bisulfite, 4 per cent. The bath is at about 100 degrees Fahrenheit, which temperature is gradually raised to substantially 140 F. It may be remarked that the percentage of ingredients. in the bath and the temperature thereof will vary,

- according to the quality and grade of carpet, or other fabric, and the nat1'1re of the dye stufi thereon; that is to say, whether the dyes are anilin orijvegetable dyes, and

- also which of the two predominates. The

textile fabric is kept in the bath from a half hour to two hours, depending, as above stated, on the quality, grade and the dye stuff.

When the colors bleed freely under the action of the' ingredients of the bath, and the bath becomes turbid, due to the coloring mat-- ter in suspension, a 10 per cent. solution of sodium peroxid is added, to oxidlze the sus- Specification of Letters Patent. Patented May '7; Application filed June 28, 1915. Serial N 0. 36,750. i

pended coloring matter and thus prevent its deposition on to the fabric, particularly on the whites of the material. The sodium peroxid may be added to the bath before the fabric is-immersed for treatment.

The caustic soda inthe bath helps the sodium bisulfite to penetrate into the fabric,

and therefore serves as a feeder for the sodium bisulfite. It also detaches-the coloring matter from the fabric by throwing it into suspension in the bath; and, further, it attacks the fabric and thereby renders the same old looking. When it is desired to render a carpet very old looking, the

amount of caustic soda is increased p'roportionally.

After the colors in the bath have been.

reduced to the desired shade, the goods are taken out and-Washed. If the fabric treated contain anilin or vegetable dyes, it will require a treatment with "chlorinated water,

that is, it will have to be bleached, and for v this purpose a 2 Twaddell solution of chlorid of lime is preferably used. Thisbath renders the whites of the fabric perfect, if

they are not so after the treatment in the color-subduing bath.

As a rule, 80 per cent. ofthe textile fabrrics treated by the color-s'ubduing bath, that is, the bath containing sodium hydroxid,

and hot water. The soap is preferably a M potassium liquid soap. -This wash eliminates fromthe fabric all the ingredients that may have adhered. thereto from the previous treatment, and it also renders the textile fabric more supple. After the wash with soap, the colors of the fabric are not very brilliant, and to render the fabric and the colors brighter, or more lustrous, the fabric is Washed in a,slightly acid solution, to ,acidify the colors and thereby brlghten the fabric. The solution I prefer to use is acid violet, which contains 0.1 per cent. of violet. From the above description, it will be noted that theprocess really comprises three main steps; first, the treatment of the fabric in a bath formed of reducing and oxibluish white. 7

. While I have given the relative quantities of the ingredients to be used, itmust be understood that the quantities stated may be varied to an extent Without materially affooting the result of the process, and therefore I do DOt llIDlt myself to the exact proportions giv'en.

I claim:

1. The process of rendering textile fabrics antique which consists in subjecting the fabric to a bath formed of sodium hydroxid, sodium bisulfite and sodium peroxid until the colors of the fabric have been subdued droxid, sodium bisulfite and sodium peroxid to the desired point; then washing the fabric in a bath of chlorinated water; then washing the fabric 'Wlth hot water and soap,

and then passing the so treated fabric through a bath containing acid Violet.

2. The process of-rendering textile fabrics antique which consists in subduing the colors of the fabric by a hot bath consisting of the reaction products of sodium hyhot'water and soap to eliminate therefrom the ingredients that may have adhered to the fabric from the previous treatment; then subjecting the fabric to an acidulated bath.,

3. The process of rendering textile fabrics antique which consists in subjecting the fabric to a hot bath conslstlng of the reaction products of reduc ng and oxidizing agents, adapted to reduce the brightness of the colors and bleach the colors in suspension in the bath; then treating the fabric with a bleaching agent to clear the Whites of the same; then washing the fabric with hot Water and potassium soap, and then treating the fabric in an acidulatedbluing bath.

4. The process of rendering textile fabrics antique which consists in subjecting the fabric to a hot bath of substantially MO de grees Fahrenheit and which consists of the reaction products of caustic soda, sodium bisulfite and sodium peroXid in the P130301 tions as specified; then treating the fz rio in a bath containing chlorid of lime in the proportions specified; then washing the fabric with hot water and potassium. soap, and then treating the fabric in an acidulated bath containing acid violet as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

Mo sEss B. ADOM.

Witnesses: V

B. Jorrn, A Pmmr D. ROLLHAUS.