Improvements in the Manufacture of Printing Compositions, suitable for Printing upon Textile and other Materials.
Year: 1896

page_text: Date of Application, 22nd July, 1896-Accepted, 19th Sept., 1896
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Printing Compositions, suitable
for Printing upon Textile and other Materials.
I, SAMUEL HOLT SHARP, of Grove Works, Clay Pit Lane, Leeds, in the
County of York, Lithographic Printer, 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 relates to an improved manufacture of semi-liquid bronze and
aluminium compositions of various colours, suitable for printing textile, felted and
other fabrics, by means of stencil plates or bands, and by means of which there
can be produced upon such fabrics clear and sharp impressions that will not be
injuriously affected by the atmosphere, and which will withstand boiling, rubbing,
washing and ironing without being destroyed.
In the manufacture of such a composition according to this invention I employ
two mixtures made and combined as I will now proceed to explain. One mixture,
which I will call A, is composed of gum arabic, linseed oil, oil of resin and
dextrine, these substances being boiled together to a syrup-like consistency. The
other mixture, which I will call B, is made by first boiling together say for about
three quarters of an hour, linseed oil and red lead, then incorporating with this
mixture litharge and turpentine, boiling the mixture, say for about an hour, and,
when cold, filtering it, as for example through a woollen bag. The mixtures A
and B are incorporated together in a cold state in the proportion of about four
parts by weight of mixture A to one part by weight of mixture B, thereby forming
a liquid with which any desired aniline or other bronze powder or aluminium
powder is mixed in the proportion of about 3 parts by weight of the liquid to
1 part by weight of the powder.
The following proportions have been found advantageous for the mixtures A
and B.
Mixture A Gum arabic 166 parts by weight, linseed oil 500 parts, oil of resin
16-7 parts, and dextrine 16-7 parts. Mixture B: Linseed oil 20 gallons, red lead
40 lbs., litharge 40 lbs., turpentine 80 gallons.
By means of semi-liquid compositions made in the manner described, there can,
with the aid of printing stencils, be produced on any desired textile or other
fabrics, designs that will withstand boiling, rubbing, washing, and ironing, and
which will not turn black or change colour under atmospheric action. Printing
compositious according to this invention, possess also the advantage that when they
are used in the printing machines, they lubricate the stencil plate as the same
passes under the fixed presser during the printing of the fabric.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
1. The herein described manufacture of a bronze or aluminium coloured printing
composition suitable for use in stencil printing machines for printing desigus on
textile and other fabrics, consisting of bronze or aluminium powder and a mixture
of gum arabic, linseed oil, oil of resin, dextrine, red lead, litharge and turpentine,
substantially as herein described.

page_text: 2. The manufacture in the manner hereinabove described of the printing
composition referred to in the preceding claim.
Dated this 22nd day of July 1896.
R. E. P. CRAVEN,
Registered Patent Agent,
22 Victoria Chambers, South Parade, Leeds, Agent for the Applicaut.