Improvements in the Manufacture of Copyable Inks, applicable for Printing Purposes.
Year: 1892

page_text: Date of Application, 19th Oct., 1892
Complete Specification Left, 19th July, 1893-Accepted, 19th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Copyable Inks, applicable for
Printing Purposes.
We, RICHARD JOHN FRISWELL, F.I.C. F.C.S., of 115 Darenth Road,
Stamford Hill, in the County of Middlesex, Consulting Chemist, and FRANK
HENLEY LEEDS, F.I.C., F.C.S., of 26 East Bank, Stamford Hill, aforesaid,
Consulting Chemist, do hereby declare the nature of this invention to be as
follows:-
4
Our invention relates to the manufacture of an improved copyable ink, which can
be used in a printing press, while from the proofs, so obtained, copies can be taken
on damp paper in an ordinary copying press.
The use by printers of the usual forms of copyable inks, made up with an
aqueous vehicle, being attended with considerable diffiulties, the object of this
invention is the manufacture of an ink in which the said aqueous vehicle is replaced
by ordinary lithographic varnish, and which will yield on treatment with damp
paper in the copying press, six or eight copies.
To this end we take lampblack, or any other pigment, according to the desired
colour of the original proof, and introduce it with thorough stirring into the boiling
aqueous solution of an aniline dye, chosen according to the required colour of the
copy. We then evaporate down, and when the mixture is thoroughly dry, grind it
with litho-varnish.
The proportions of the ingredients will vary according to the number of copies
required, but as an example we may give the following:-"One" part each of
lampblack and the dye known as Dablia," dried and ground in "ten" parts of
varnish, with or without the addition of driers.
Dated this 19th day of October 1892.
AMBROSE MYALL,
21, Cockspur Street, London, S.W., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Copyable Inks, applicable for
Printing Purposes.
We, RICHARD JOHN FRISWELL, F.I.C., F.C.S., of 115 Darenth Road,
Stamford Hill, in the County of Middlesex, Consulting Chemist, and FRANK
HENLEY LEEDS, F.I.C., F.C.S., of 26 East Bank, Stamford Hill, aforesaid,
Consulting 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 :-
Our invention relates to the manufacture of an improved copyable ink, which can
be used in a printing press, while from the proofs so obtained copies can be taken
on damp paper in an ordinary copying press.
The use by printers of the usual forms of copyable inks, made up with an
aqueous vehicle, being attended with considerable difficulties, the object of this
invention is the manufacture of an ink in which the said aqueous vehicle is replaced
by ordinary lithographic varnish, and which will yield on treatment with damp
paper in the copying press, six or eight copies.
To this end we take lampblack, or any other suitable pigment, according to the
desired color of the original proof, and introduce it with thorough stirring into the
boiling aqueous solution of a water soluble aniline dye, chosen according to

page_text: the required color of the copy. We then evaporate down, and when the mixture is
thoroughly dry, grind it with litho-varnish.
The proportions of the above ingredients will vary according to the number of
copies, which may be required to be taken from the proof in the copying press, but
as an example of an ink prepared in accordance with our invention, we may give
the following.
One part of lampblack and one part of the dye known as "Dahlia," are mixed
and dried, as above described, and then ground in ten parts of litho-varnish, with or
without the addition of driers.
In those cases where the aniline dye employed contains moisture, or loosely
combined water, it is not necessary to make an aqueous solution of the dye and to
stir the pigment therein and then evaporate and dry before grinding, as above
described, but the said dye in its solid condition may be ground up directly with
the pigment and varnish.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim, is:-
1. In the manufacture of a copyable ink, applicable for printing purposes, the
incorporation of a water soluble dye in an oil varnish, substantially as and for the
purpose described.
2. In the manufacture of a copyable ink, applicable for printing purposes,
the combination of a pigment, a water soluble dye and an oil varnish, substantially
as and for the purpose described.
3. The herein described process for the preparation of an improved copyable ink,
applicable for printing purposes, consisting in the mixing of a pigment with the
boiling aqueous solution of a water soluble auiline dye, evaporating said mixture to
dryness, and finally grinding the product so obtained with lithographic varnish,
substantially as described.
4. The herein described process for the preparation of an improved copyable
ink, applicable for printing purposes, consisting in the grinding together of a
pigment, a water soluble aniline dye, containing moisture or loosely combined
water, and a lithographic varnish, substantially as described.
5. As a new article of manufacture, the improved copyable ink, applicable for
printing purposes, derived from the combination of a pigment, a water soluble dye,
and an oil varnish said ink capable of use in a printing press, and proofs so obtained
yielding copies on damp paper in a copying press, substantially as described.
Dated this 19th day of July 1893.
AMBROSE MYALL,
2, Lancaster Place, Strand, Londou, W.C., Agent for the Applicants.