IMPROVEMENTS IN THE METHOD AND MEANS OF PREPARING FABRICS FOR BLEACHING AND DYEING 11
Year: 1882

page_text: LETTERS PATENT to Silvester Fulda, of Bow, in the County of Middlesex
for an invention of "IMPROVEMENTS IN THE METHOD AND MEANS OF
PREPARING FABRICS FOR BLEACHING AND DYEING
11
PROVISIONAL SPECIFICATION left by the said Silvester Fulda at the Office
of the Commissioners of Patents on the 15th April 1882.
SILVESTER FULDA, of Bow, in the County of Middlesex, "IMPROVEMENTS IN
THE METHOD AND MEANS OF PREPARING FABRICS FOR BLEACHING AND DYEING,"
My said improvements have for their object the cheapening and facilitating the
process of preparing linen yarn, cloth, cotton, and other fibres and fabrics for
bleaching, and other purposes, and in fixing aniline and other mineral coloring
matter for dyeing and printing silk, wool, cotton and linen.
In preparing linen yarn, cloth, cotton and other fabrics for bleaching and other
purposes, I proceed as follows:-
For one ton of yarn, fibres, cloth or cotton, I dissolve 56 pounds of Silicate of
Soda in crystals, or Silicate of. Soda in potash. I then take 56 pounds of
unslaked lime-slake the same in water-and allow it to settle until perfectly
clear. I then add 5 pounds of caustic alkali or soda, or potash, and dissolve the
same in the above nained lime water, making the whole equal to 10 gallons. The
above named Silicate of Soda or Silicate of potash is then added and the whole of
the ingredients are properly inixed, dissolved and combined. I then concentrate
the mixture to 140 per cent on Twaddel's Hydrometer.
When boiling the articles to be bleached, I add from 2 to 4 per cent of the
above mixture to the water in which the saine are boiled, and continue the boiling
from 3 to 4 hours, which I term the "first boil" and by which the yarn fibres
or cloth are prepared for the process of bleaching.
For fixing aniline and other mineral coloring matters as aforesaid, I prepare a
composition of glass gall. I dissolve the saine in 16 pints of lime water, with
6 pounds of Sulphate of soda, 4 ounces of cream of tartar, 6 ounces of alum in a
strong solution. I dissolve in 4 pints from the above solution 1 pound of mineral
or aniline dye in crystals with 2 ounces of methylated spirit. Then I dye or
print, in the usual manner, any mineral color, or mixed Colors, silk, cotton, wool
or linen.
After the fabrics are dyed or printed, and before finishing, I immerse the same
for half an hour in a mixture of the above solution diluted to from 3 to 6 per cent
on Twaddel's hydrometer No. 1.
I then wash the fibrics in clear water, dry, and trent them as usual.
.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Silvester Fulda in the Great Seal Patent Office on tho
14th October 1882.
Silvester Fulda, of Bow, in the County of Middlesex, “IMPROVEMENTS IN
THE METHOD AND MEANS OF PREPARING FABRICS FOR BLEACHING AND DYEING
"
My said Improvements have for their object the cheapening and facilitating the
process of preparing linen yarn, cloth, cotton, and other fibres and fabrics for
bleaching and other purposes, and in fixing aniline and other mineral coloring
matters for dyeing and printing silk, wool, cotton and linen.
In preparing linen yarn, cloth, cotton, and other fabrics for bleaching and other
purposes, I proceed as follows:-
For one ton of yarn, fibres, cloth or cotton, 1 dissolve 50 pounds of Silicate of
Soda in crystals, or Silicate of potash. I then take 56 pounds of unslaked lime-
slake the same in water-and allow it to settle until perfectly clear. I then add
5 pounds of Caustic alkali or soda or potash, and dissolve the same in the above
named lime water, making the whole equal to 10 gallons. The above nained
Silicate of Soda or Silicate of potash is then added and the whole of the ingredients
are properly mixed, dissolved and combined. I then concentrate the mixture to
140 per cent on Twaddel's Hydrometer.
When boiling the articles to be bleached, I add from 2 to 4 per cent of the
above mixture to the water in which the same are boiled, and continue the boiling
from three to four hours, which I term the "first boil," and by which the yarn
fibres or cloth are prepared for the process of bleaching.
For fixing aniline and other mineral coloring mattera as aforesaid, I prepare a
composition of 5 pounds of Glass gall. I dissolve the same in 16 pints of lime
water, with 6 pounds of sulphate of soda, 4 ounces of cream of tartar, 6 ounces of
alum in a strong solution. I dissolve in 4 pints from the above solution one pound
of mineral or aniline dyo in Crystals with two ounces of methylated spirit. Then
I dye or print, in the usual manuer, any mineral color, or mixed colors, silk, cotton,
woul or linen.
After the fabrics are dyed or printed, and before finishing, I immerse the same
for half an hour in a mixture of the above solution diluted to from 3 to 6 per cent
on Twaddel's hydrometer No. 1.
I then wash the fabrics in clear water, dry, and treat them as usunl.
In order to neutralise the chlorine gas in the above goods I use to each hundred
weight of such goods 3 pounds of Silicate of potash in liquid at 140° and one
pound of Glass gall, which I dissolve and nix together, and then reduco with
water to from 5 to G on Twaddel's hydrometer No. 1. The goods are steeped in
the above mixture for one hour and then washed as usual.
Having described and ascertained the nature of my said invention, and in what
manner the same is to bo performed, 1 claim :-
1. The method and means of effecting the operation known as "first boil”
substantially as herein beforo described.
2. The method and means of fixing anilino and other mineral coloring matters
substantially as herein beforo described.
3. The method and means of neutralising the chlorine gas without the aid of
acids, substantially as heroin before described.
In witness whereof I the said Silvester Fulda havo hereunto set my hand
and seal this twelfth day of October in the year of our Lord one thousand
eight hundred and eighty two.
ACTRAN2A
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