Improvements in Means and Method of Dyeing or Coloring Wool, Silk, Hair, Fur, Feathers, and other Animal or Vegetable Fibres or Plain Cut Pile, Raised Pile, or Looped Fabrics composed thereof.
Year: 1891

page_text: Da of Application, 10th Jan., 1891
Complete Specification Left, 29th Oct., 1891-Accepted, 5th Dec.. 1891
PROVISIONAL SPECIFICATION.
Improvements in Means and Method of Dyeing or Coloring Wool,
Silk, Hair, Fur, Feathers, and other Animal or Vegetable Fibres
or Plain Cut Pile, Raised Pile, or Looped Fabrics composed
thereof.
We, HERBERT ANDERTON FOSTER, of Black Dike Mills, Queensbury in the
County of York, Manufacturer, and JOE FROST, of Huddersfield in the County
aforesaid, Chemist, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object the production, by a new or improved means or
method, of designs or ornamental effect by variety of colors on piece goods furs of
skins, imitation seal, otter and other like plushes plain cut pile, raised pile or
looped fabrics and is also applicable to sliver, yarn, or fibre employed in the
production of mixture melange or mottled yarn of animal or vegetable fibres.
According to this our said invention the piece, skin, plush, plain cut pile, raised
pile or looped fabric, sliver, yarn or fibres is to be impregnated with a soluble salt
of lead or other metallic salt whose sulphide gives the required color or shade.
The material having been so operated upon is next to be passed through a bath
containing some soluble sulphide such as sulphides of sodium potassium or ammonia
or through a solution of sulphuretted hydrogen or other like sulphides either in
solution or in gas.
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2
In order to apply the discharging agent we first make a thickening of flour paste,
gum starch or other suitable and well known material. Or we may use a thickening
entirely of clay such as pipe or china clay or some other inert body so that the
discharging agent may act only on the color to be discharged. We afterwards
mix with any of the above thickenings the compound known as peroxide of
hydrogen H₂O, hydroxal in sufficient quantity (which quantity must be varied
according to the shade required) to convert the above sulphides into white
sulphate PbS+ *H₂O₂ PbSО, +4 OH, which may be dissolved out if required.
In order to produce any colored design or ornamental effect we mix with any of
the above thickenings paste composed of the thickening and H₂O, any suitable
coloring matter previously dissolved in water or in the thickening, such as red,
yellow, blue, green or other coloring matters, which resist the oxidising action of
the hydroxal: The color is then applied cither by brush block or engraved rollers
or other printing appliances and the material is then steamed in the usual manner
or the material may be dyed first brown or other shade by the sulphide and
afterwards dyed in a bath of red, yellow, blue, green or other color and the colored
design produced by printing on the white discharge only.
In some cases the reverse of the above process is employed by first dyeing the
material the color red, yellow, blue or green then pass through a bath of the
metallic salt and the soluble sulphide to obtain the colors afterwards apply
the discharge to produce the colored effects.
When applying the color small quantities of some one or more of the various
acids such as acetic hydrochloric oxalic or sulphuric or acid salts may be used
along with the color accordingly as the nature of the fibre the fabric or material
and coloring matter may require for fixing the color:
The advantages of the method as above described are that colors can be obtained
on vegetable or animal fibres without the use of acids (as heretofore for the

page_text: purpose of discharging) and thereby avoiding the tendency to damage and weaken
the fibres.
Dated this 8th day of January 1891.
WALTER BRIERLEY,
Central Chambers, Halifax, Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Means and Method of Dyeing or Coloring Wool,
Silk, Hair, Fur, Feathers, and other Animal or Vegetable Fibres
or Plain Cut Pile, Raised Pile, or Looped Fabrics composed
thereof.
We HERBERT ANDERTON FOSTER of Black Dike Mills, Queensbury in the
County of York Manufacturer and JOE FROST of Huddersfield in the County
aforesaid, Chemist 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 :—
This invention has for its object the production by a new or improved means or
methods of designs or ornamental effect by variety of colors in piece goods, furs or
skins, imitation seal, otter and other like plushes, plain cut pile, raised pile,
or looped fabrics and is also applicable to sliver, yarn in warp, or hank, or in piece,
or fibre employed in the production of mixture, melange, or mottled yarn of
animal or vegetable fibres.
According to this our said invention the plain or fancy woven piece, skin, plush,
plain cut or fancy cut pile, raised pile, or looped fabric, sliver, yarn or fibres is to
be impregnated with a soluble salt of lead or other metallic salt whose sulphide
gives the required color or shade. The material having been so operated upon is
next to be passed through a bath containing some soluble sulphide such as sulphides
of sodium potassium or ammonia or through a solution of sulphuretted hydrogen or
other like sulphides which may be either in solution or in gas.
In order to apply the discharging agent we first make a thickening of flour,
paste, gum, starch or other suitable and well known thickening material. Or we
may use a thickening entirely of clay such as pipe clay, or china clay, or some
body not acted upon by hydroxal so that the discharging agent may act only on
the color to be discharged. We afterwards mix with any of the above thickenings
the compound known as peroxide of hydrogen H₂O, hydroxal in sufficient quantity
(which quantity must be varied according to the shade required) to convert the
above sulphides into white sulphate PbS + H₂O₂ = PыSO + 4 OH, which may
be dissolved out if required.
In order to produce any colored design or ornamental effect we mix with any of
the above thickenings, paste composed of the thickening and H₂O, any suitable
coloring matter (previously dissolved in water or in the thickening) such as red,
yellow, blue, green or other coloring matter which resist the oxidising action of the
hydroxal. The color is then applied either by brush, block, or engraved rollers,
or other printing appliances and the material is then steamed in the usual manner
if the color is one requiring steaming to fix it, or the material may be dyed, first
brown or other shade by the sulphide, and afterwards dyed in a bath of red, yellow,
blue, green or other color, and the colored design produce by printing on the white
discharge only.
In some cases when required by the combination of colorings such as brown
produced by sulphide of lead afterwards dyed with red, yellow, blue or green, or
other colors the reverse of the above process is employed by first dyeing the
material the color red, yellow, blue, green or other color, then passing through a
bath of the metallic salt and the soluble sulphide to obtain the colors afterwards
applying the discharge to produce the colored effects.

page_text: When applying the color small quantities of some one or more of the various
acids such as acetic, oxalic or sulphuric, or acid salts may be used along with the
color accordingly as the nature of the fibre the fabric or material and coloring
matter may require for fixing the color.
The advantages of the method as above described are that colors can be obtained
on vegetable or animal fibres without the use of acids (as heretofore for the purpose
of discharging) and thereby avoiding the tendency to damage and weaken the
fibres.
Having now particularly described and ascertained the nature and object of our
said invention and in what manner the same is to be performed we would have it
understood that we lay no claim to colors produced by metallic sulphides but we
declare that what we do claim is,
The employment of hydroxal (H,O,) together with coloring matters such as set
forth for purposes and as herein fully described.
Dated this 28th day of October 1891
HERBERT ANDERTON FOSTER.
JOE FROST.
By their Agent, Walter Brierley,
Bank Chambers, Waterhouse Street, Halifax.