A NEW AND IMPROVED METHOD OF PRODUCING VARIOUS DESIGNS OF DIFFERENT COLOURS, AND IN IMITATING VITRO-EMAMEL ON Iron ·PROVISIONAL SPECIFICATION
Year: 1874

page_text: LETTERS PATENT to Frederick Weaver Oliver, of Gloucester Street,
Park Street, Camden Town, in the County of Middlesex, for the
Invention of "A NEW AND IMPROVED METHOD OF PRODUCING VARIOUS
DESIGNS OF DIFFERENT COLOURS, AND IN IMITATING VITRO-EMAMEL ON Iron
·PROVISIONAL SPECIFICATION left by the said Frederick Weaver Oliver
at the Office of the Commissioners of Patents, with his Petition,
on the 9th September 1874.
I, FREDERICK WEAVER OLIVER, of Gloucester Street, Park Street,
5 Camden Town, in the County of Middlesex, do hereby declare the
nature of the said Invention for "A NEW AND IMPROVED METHOD OF
PRODUCING VARIOUS DESIGNS OF DIFFERENT COLOURS, AND IN IMITATING VITRO-
ENAMEL ON IRON FOR THE MANUFACTURE OF SHOW TABLETS AND OTHER - PURPOSES,"
to be as follows:-

page_text: various of different colours and in imitating vitro-enamel on iron for the
manufacture of show tablets and other purposes.
:
The means by which I propose to accomplish the above object are as
follows I take a tinned iron plate (by preference one thickly coated
with tin), and having placed it in a furnace so that it may receive an
equal heat until the fusion of the tin begins to take place when I plunge
it into a bath of cold water. The plate when cold is wiped so as to
remove the superfluous water, and with a brush or other suitable means
I apply a coating of the following mixture:-

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Frederick Weaver Oliver in the Great Seal Patent
Office on the 9th March 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FREDERICK
WEAVER OLIVER, of Gloucester Street, Park Street, Camden Town, in
the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of September, in the year
of
our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Frederick Weaver Oliver, Her special licence
that I, the said Frederick Weaver Oliver, my executors, administrators,
and assigns, or such others as I, the said Frederick Weaver Oliver, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "A NEW AND
IMPROVED METHOD OF PRODUCING VARIOUS DESIGNS OF DIFFERENT COLOURS AND IN
IMITATING VITRO-ENAMEL ON IRON FOR THE MANUFACTURE OF SHOW TABLETS AND
OTHER PURPOSES," upon the condition (amongst others) that I, the said
Frederick Weaver Oliver, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Inven-
tion, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Frederick Weaver Oliver, do hereby
declare the nature of my said 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 :-
This Invention consists in a new and improved method of producing
various designs of different colors, and in imitating vitro-enamel on iron
for the manufacture of show tablets and other purposes.

page_text: The means by which I propose to accomplish the above object are as
follows: I take a tinned iron plate (by preference one thickly coated
with tin) and having placed it in a furnace so that it may receive an
equal heat until the fusion of the tin begins to take place I plunge it
into a bath of cold water. The plate when cold is wiped so as to remove
the superfluous water, and with a brush or other suitable means I apply
a coating of the following mixture :—
, 2,
"
وو
nitric acid.
The plate is then thoroughly washed in a bath of cold water, and dried
as quickly as possible.
It will be found that by the above operation the tinned plate will
assume a crystalline appearance. I then take any suitable transfer paper,
as at present used for transferring on metal, and proceed to print thereon
in the usual manner. When the impression is completed I print a solid
white all over the paper with the exception of those parts where it is
desired to produce different colours, after which a second coating of white
is applied and dusted over with a silver bronze. When the printing is
thoroughly dry I apply the desired colors over the silvered white afore-
said, the colours only appearing where the transfer paper has not received
the coating of white and bronze.
I now proceed to transfer the design on to the metal plate, prepared
as above, in the following manner :-A coating composed of a mixture
of turpentine and copal varnish in about equal proportions is applied on
the plate, which is then heated, and the design is transferred from the
paper on to the plate in the usual manner of transferring designs on
metal, after which the plate is baked and polished.
By the above process I am enabled to produce various designs of
different colours imitating vitro-enamel, and presenting a very pleasing
appearance.
And in order to explain my said Invention more fully I will now
proceed to describe the best means I am acquainted with for carrying
the same into practical effect.
I take a tinned iron plate (one thickly coated with tin, by preference),
and prepare the same with heat and acid in order to give to the said

page_text: plate a crystalline appearance known as "moiré metallique"; I then
take suitable transfer paper as at present used for transferring on to
metal and print thereon in the usual manner; I then print a solid white
all over the paper with the exception of those parts where it is desired
to show the "moiré metallique," the said solid white is then covered with
powdered white, and a second coating of solid white is printed thereon,
which is dusted over with silver bronze so as to stop out the "moiré
metallique "when the transfer is made; I then colour the parts of the
design which have not been coated over as aforesaid with any desired
transparent colour or colours, prepared as hereafter described, or the
impression may be made on the plate without such colours, in which case
the "moiré metallique " will show through in its original state and
produce a very pleasing appearance.
I now proceed to describe the method of transferring the design on to
the plate prepared as above..
A coating composed of a mixture of turpentine and copal varnish in
about equal proportions is applied to the said plate, which is then heated
o as to warm up the varnish that it may be sufficiently dry when cold
to prevent the impression "throwing up; " I then transfer the design
on to the plate by the well-known method of transferring designs on
metal, after which the plate is varnished, baked, and polished.
I propose to manufacture the aforesaid transparent color or colors in
the following manner, viz., by (grinding the desired color or colors in
gold size and reducing with copal varnish and turpentine.
Plates prepared as above will be applicable for a variety of useful
purposes, being very ornamental, and the colors will be fixed, not being
a colored spirit varnish as heretofore employed..
Having now described the nature of my said Invention for "A New
and Improved Method of Producing Various Designs of Different Colors,
and in Imitating Vitro-enamel on Iron for the Manufacture of Show
Tablets and other Purposes," and in what manner the same is to be per-
formed, I would remark in conclusion that I do not claim as my Inven-
tion producing the crystals on tinned iron plates, or the use of the several
substances herein-before described and referred to, except when the same
are used in and for the purposes of my said Invention, which I hereby

page_text: declare to consist in producing various designs on iron plate and
imitating vitro-enamel plate, according to the processes and the treat-
ment substantially as herein-before described.
In witness whereof, I, the said Frederick Weaver Oliver, have
hereunto set my hand and seal, this Ninth day of March, in the
year of our Lord One thousand eight hundred and seventy-five.
FREDERICK WEAVER OLIVER. (L.S.)