Applied to Textile Fabrics and Materials.
Year: 1886

page_text: Date of Application, 25th Nov., 1886.
Complete Left, 19th Aug., 1887.
Complete Accepted, 20th Sept., 1887.
Applied to Textile Fabrics and Materials.
I, DUNCAN STEWART, of London Road Iron Works, Glasgow, in the County of
Lanark, North Britain, Engineer, do hereby declare the nature of this Invention to be
as follows, that is to say :-
My said Invention has for its object the producing of grey and black colors on
textile fabrics and materials; and it consists in applying a specially prepared sub-
stance or compound believed never to have been hitherto used for that purpose.
In carrying out my Invention I take an earthy compound of a class known by the
various names diatomite, desmid earth, white peat, kieselguhr, or bergmehl, preferring
a variety or varieties of such compound which when highly heated in retorts will
assuine a grey or black color believed to be due to the presence of organic or
carbonaceous ingredients which become carbonized. Or when the earthy compound,
consisting principally of silica has originally little or no carbonaceous matter
I intimately mix with it a suitable carbonaceous matter before carbonizing in the
retorts.
I take the carbonized substance and grind it to a fine impalpable powder, and then
intimately mix it with an albuminous or other suitable medium such as is used by
calico printers in pigment printing. The substance or compound prepared as herein-
before described is to be applied to textile fabrics or materials by ordinary printing
or padding processes. Or the carbonized substance may be applied to textile materials
in the powdered condition as in the well known process for coloring such materials
with powders instead of by dyeing.
Dated this Twenty fourth day of November 1886.
EDMUND HUNT,
Applicant's Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in Preparing Grey and Black Coloring Matters to be
Applied to Textile Fabrics and Materials.
I, DUNCAN STEWART, of London Road Iron Works, Glasgow, in the County of
Lanark, North Britain, Engineer, 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, that is to say:—
My said Invention has for its object the producing of grey and black colors on
textile fabrics and materials; and it consists in applying a specially prepared
substance or compound believed never to have been hitherto used for that purpose.
In carrying out my Invention I take an earthy compound of a class known by the
various names diatomite, desmid earth, white peat, kieselguhr, bergmehl, preferring
a variety or varieties of such compound which when highly heated in retorts will
assume a grey or black color believed to be due to the presence of organic or
carbonaceous ingredients which become carbonized. Or when the earthy compound,
consisting principally of silica has originally little or no carbonaceous matter
I intimately mix with it a suitable carbonaceous matter before carbonizing in the
retorts.
I take the carbonized substance and grind it to a fine impalpable powder, and then
intimately mix it with an albuminous or other suitable medium such as is used by
calico printers in pigment printing. The substance or compound prepared as herein-
before described is to be applied to textile fabrics or materials by ordinary printing
or padding processes. Or the carbonized substance may be applied to textile materials
in the powdered condition as in the well known process for coloring such materials
with powders instead of by dyeing.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I declare that what I claim is :-
Preparing grey and black coloring matters to be applied to textile fabrics or
materials by treating an earthy compound of the class known by the various names,
diatomite, desmid earth, white peat, kieselgubr, or bergmehl substantially in the
manner herein before described.
Dated this Eighteenth day of August 1887.