IMPROVEMENTS IN TREATING ARTICLES OF PORCELAIN AND OTHER EARTHENWARE, GLASS, AND ENAMEL, TO VARIOUS ORNAMENTAL EFFECTS
Year: 1879

page_text: LETTERS PATENT to Samuel Ranford, of the College Precincts, in the City of
Worcester, Decorator, and James Callowhill, of London Road, in the said, City,
Painter, for the Invention of "IMPROVEMENTS IN TREATING ARTICLES OF
PORCELAIN AND OTHER EARTHENWARE, GLASS, AND ENAMEL, TO
VARIOUS ORNAMENTAL EFFECTS."
OBTAIN
led the 24th October 1879, and dated the 28th April 1879.
PROVISIONAL SPECIFICATION left by the said Samuel Ranford and James
Callowhill at the Office of the Commissioners of Patents on the 28th April
1879.
SAMUEL RANFORD, of the College Precincts, in the City of Worcester, Decorator,
and JAMES CALLOWHILL, of London Road, in the said City, Painter. "IMPROVEMENTS
IN TREATING ARTICLES OF PORCELAIN AND OTHER EARTHENWARE, GLASS, AND
ENAMEL TO OBTAIN VARIOUS ORNAMENTAL EFFECTS."
-
This Invention has for its object the production of certain effects in gold and
other colors, or grounds, or otherwise, on porcelain or other earthenware, glass, and
enamel.
"
When the surface of the article is to have the effect produced on it known as a
"mat" in gold or other metallic colour, we coat the biscuit or glazed parts of
porcelain or pottery to be acted upon with a uniform coating of (by preference)
what is commonly known amongst porcelain manufacturers as vellum," and in the
manner known to china and glass painters as "ground-laying" (but other color or
other process that will leave the surface dull after firing will answer the purpose);
the article is then fired in the usual way for the particular color, and it then has
applied to it where required the coatings desired of gold or other lustre, and it is
then further fired, when a "mat" metallic surface will be produced, which may be
decorated by the application to it of painting or printing, and it is finished as may
be desired, the metallic surface forming the ground color.
Another method of proceeding is to produce the "vellumed" or "dead" surface,
such as before described, and then to decorate, either by hand painting or by
printing in white or color, the whole or part or parts thereof, which is then fired,
producing a bright and dull surface, which may or may not be covered with either
gold, silver, bronze, or other lustre, which after again firing produces bright and dull
golds or other metallic effects without the necessity of burnishing.
By this combination of prepared dead grounds, the work upon such grounds, and
the application of the lustres afterwards, we are enabled to obtain results not
previously obtained in the decoration of porcelain or other earthenware, glass, or
enamel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Samuel Ranford and James Callowhill in the Great Seal Patent
Office on the 25th October 1879.
<<
SAMUEL RANFORD, of the College Precincts, in the City of Worcester, Decorator,
and JAMES CALLOWHILL, of London Road, in the said City, Painter. IMPROVEMENTS
IN TREATING ARTICLES OF PORCELAIN AND OTHER EARTHENWARE, GLASS, AND
ENAMEL TO OBTAIN VARIOUS ORNAMENTAL EFFECTS."
This Invention has for its object the production of certain effects in gold and
other metals and colours, in grounds or otherwise, on porcelain or other earthen-ware,
glass, and enamel.
"
When the suaface of the article is to have the effect produced on it of the character
of that known as a "mat" in gold or other metallic color, we coat the biscuit or
glazed parts of porcelain or pottery, to be so acted upon with a uniform coating of
(by preference) what is commonly known amongst porcelain manufacturers as
"vellum," and in the manner known to china and glass painters as "ground laying
(but other color or other process that will leave the surface desired dull after firing
will answer the purpose); the article is then fired in the usual way for the particular
color, and it then has applied to it where required the coatings desired of gold or
other lustre, and it is then further fired, when a
"mat
metallic surface will be
produced, which may be decorated by the application to it of painting or printing,
and it is finished as may be desired, the metallic surface forming the ground
color.
"
دو
Another method of proceeding is to produce.the "vellumed or "dead" surface,
such as before described, and then to decorate, either by hand painting or by
printing, in white or colour, the whole or part or parts thereof, which after firing
produces a dull and bright surface, and this process may be so far varied as to print
or paint patterns in "vellum" or other dull colours upon glazed or bright surfaces,
which are then fired, producing a bright and dull surface, which may or may not be
covered with either gold, silver, bronze, or other lustre, which after again firing
produces bright and dull golds or other metallic effects without the necessity of
burnishing.
By this combination of prepared dead grounds, the work upon such grounds, and
also the printing or painting with dull colors upon glazed or bright surfaces, and
the application of the lustres afterwards, we are enabled to obtain results not
previously obtained in the decoration of porcelain or other earthenware, glass, or
enamel.
Having thus described our Invention, and means which we adopt in carrying the
same into effect, we would have it understood that what we claim is the improve-
iments in treating articles of porcelain and other earthenware, glass, and enamel,
to obtain various ornamental effects, substantially as described.
In witness whereof, we, the said Samuel Ranford and James Callowhill, have
hereunto set our hands and seals, this Twenty second day of October, in the
year of our Lord One thousand eight hundred and seventy nine.
SAMUEL RANFORD. (L.S.)
JAMES CALLOWHILL. (L.S.)