Improvements in Black Dyeing "Piece Goods " or Fabrics.
Year: 1890

page_text: Date of Application, 7th June, 1890
Complete Specification Left, 5th Mar., 1891-Accepted, 11th Apr.. 1891
PROVISIONAL SPECIFICATION.
Improvements in Black Dyeing "Piece Goods
"
or Fabrics.
I, ALLEN NORTH, Master Dyer, of 245, Kensington Street, Girlington, Bradford,
Yorkshire, do hereby declare the nature of this invention to be as follows:-
To improve the colour of the black cotton warp, or weft by the use of a blue
dye and by an additional process to that already in use, in all mixed fabrics, of wool
and cotton, cotton and worsted, cotton and hair, (such as alpaca, mohair, camel
hair and mohair) also velveteens and sateens.
The goods are first black dyed in the ordinary manner, or way, and then,
according to this my invention, instead of "drying off" as heretofore, there is to be
employed a bath of clear water heated to about 110° Fahrenheit.
To every 20 gallons of water there must be added about one ounce of "methylene
blue" (the latter having previously been dissolved in boiling water). The piece, or
pieces is or are then placed, or "entered" into the dye beck, and "worked" about
30 minutes. The quantity of "methylene" dye will be varied from the proportion.
stated according to the shade required. The piece or pieces must next be washed
in clean cold water, and is or are then ready for drying, and pressing as usual. By
the use of the additional process described, an uniform, and superior black is
obtained to that resulting from the old processes, because in pieces, or fabrics of
mixed fibres, the color of the cotton fibre will match approximately the color, or
shade of the fibres of wool, worsted, or hair, always providing that previous to
employment of above improved process the black cotton fibre has been mordaunted
with sumac, and iron, as is the usual method employed in black cotton dyeing.
Dated this 16th day of July 1890.
WALTER
BRIERLEY,
Central Chambers, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Black Dyeing "Piece Goods" or Fabrics.
I, ALLEN NORTH, Master Dyer, of 245, Kensington Street, Girlington, Bradford,
Yorkshire, do hereby declare the nature of this invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement :-
To improve the colour of the black cotton warp or, weft by the use of a blue dye
and by an additional process to that already in use in all mixed fabrics of wool and
cotton, cotton and worsted, cotton and hair (such as alpaca, mohair, camel hair &c.)
cotton and silk also goods made entirely from cotton such as velveteens and
sateens etc.
Such being the nature and object of my said invention the following is a complete
description of same.
The goods are first black dyed in the ordinary manner, or way, and then
according to this my invention, instead of "drying off" as heretofore, there is to be
employed a bath of clear water heated to about 110° Fahrenheit.
<
To every 20 gallons of water there must be added about one ounce of patent
methylene blue" (the latter having previously been dissolved in boiling water).
The piece or pieces is or are then placed, or "entered" into the dye beck, and
"worked" about 30 minutes. There is thus a blue dyeing process upon the black
dyeing process the result being a better shade of black. The quantity of
methylene blue "dye will be varied from the proportion stated according to the
shade of black required.

page_text: The piece or pieces must next be washed in clean cold water and is or are then
ready for drying and pressing as usual. By the use of the additional process
described an uniform and superior black is obtained to that resulting from the old
processes, because in pieces or fabrics of mixed fibres, the shade of black of the
cotton fibre will match approximately the colour or shade of the fibres of wool,
worsted, or hair, (always providing that previous to employment of above improved
process the black cotton fibre has been mordanted with sumach and iron as is the
usual method employed in black cotton dyeing.
I have found in actual practice that it is an advantage to pass the pieces so
treated through a wash of warm water and soap whereby the piece is cleaned and
also the selvage threads (of cotton) in certain classes of goods becomes almost white,
this in itself though no real advantage to the piece meets a trade requirement of
importance.
In aniline black dyed goods the mordanting process; sumach and iron is not
requisite.
A sumach and iron base as commonly used affords a specially favourable base for
the action of the patent "methylene blue" used in above improved process.
Having now particularly described and ascertained the nature and object of my
invention, and in what manner the same is to be performed, I declare that what 1
claim is
1. The improved method and process of black dyed piece goods or fabrics as
herein fully described.
2. The improved method and process of black dyed piece goods or fabrics as
applied to aniline black dyed pieces as herein fully set forth.
Dated the 4th day of March 1901
ALLEN NORTH.
By his Agent, Walter Brierley,
Central Chambers, Halifax.
ALLEN NORTH.
By his Agent, Walter Brierley,
Central Chambers, Halifax.