PRINTING OR PRODUCING PICTURES ON ENAMELLED IRON
Year: 1884

page_text: CATACATION.
I GEORGE JAMES RHODES of 35, Dudley Road, Wolverhampton in the County
of Stafford, England do hereby declaro the nature of my invention for PRINTING
OR PRODUCING PICTURES ON ENAMELLED IRON to be as follows:-
My invention for a new and improved process for printing on enamel's applies
to that class of enamels which are vitrified by heat.
Instead of applying (according to the usual practice) by means of lithography,
zincography or block printing, a layer of vitrifiable colour to what is known in the
trado as a transfer paper; that is a thick unsizod paper conted with some substance
or substances soluble in water as starch or gum, and transferring to enamelled
plate, I print on a thin, but tough, paper, known as pottery tissue, the said tissuo
being used without any sizing or coating of guin, starch or similar substances,
Tuixing only enough colouring matter with the ink or vehicle to shew a faint
impression of the design on the paper, to aid its being placed properly in position
on the plate.
The process of application of the printed designs to the enamelled surface differs
materially from that usually practised in this respect; that no sticky varnish of
any kind is applied to the enamelled or vitrified surface to be decorated, on the
contrary it is kept as bright and smooth as possible.
After the design on thin paper has been brought into the most intimato contact
with the article (which is slightly. warmed) either by rubbing the back of the paper,
or passing it through the press, the dry paper is stripped off dry, and the film
of varnish which is transferred to the enamelled article is dusted with colour,
generally the same as was mixed with the ink or varnish; though by dusting the
enamelled article with a different colour mixed tints may be readily produced.
I use the same colours as are commonly used in the decorating of ceramic and
namelled ware according to the colour desired.
When I want to produce different coloured designs, I dust the article with
lieffrent colours in different places, and fire-it in an enamellers' muffle.
When I repeat the process of printing and dusting with appropriate colours and
e-firing in the muffle, care being taken that the second design registers with
he first.
The advantages of this process are, that there is no sticky film of varnish, to
tch the coloured dust, and that there being no layer of varnish under the colour
ere is no preliminary baking, and the colour is consequently sound and unbroken,
ot as it is by the old process.
Dated this nineteenth day of March in the Year of our Lord

page_text: 38
I GEORGE JAMES RHODES of 35 Dudley Road Wolverhampton in the County
of Stafford England Enameller do hereby declare the nature of my invention for
and in what manner
" PRINTING OR PRODUCING PICTURES ON ENAMELLED IRON
the same is to be performed, to be particularly described and ascertained in and by
the following statement :—
5
My invention relates to means of producing on enamelled iron clear printing or
pictures without the irregularities specks or tarnish that often result from the
process of transfer as it is usually conducted. These blemishes are chiefly owing
to the presence of portions of the adhesive varnish which is usually applied over
the whole surface of the plate or of the starch or gummy matter of the transfer 1
paper. I therefore according to my invention dispense entirely with the varnishing
or coating of the enamelled iron and with the starch or gummy material of the
transfer paper and proceed in the following manner.
On the thin but tough paper, usually known as "pottery tissue" without any
bizeing or coating with gum starch or such like substances I print the design faintly
with lithographic varnish using in it no more colour than is enough to guide the
placing of the paper in correct register on the enamelled iron.
I apply this print face downwards to the enamelled iron which may be warmed
and bring it into intimate contact with it by rubbing or pressing. I then strip off
the dry paper which leaves on the surface of the cuamel the thin film of varnish
thus printed on it. I then sift over the surface of the enamel finely pulverised
ceramic colour portions of which adhere to the varnish whilst the rest can be
removed by blowing off or otherwise. I then fire it in the usual way so as to fuse
the ceramic colour and fix it as enamel.
In some cases the impression on the enamel can be dusted in different parts with
different colours; In other cases the process is repeated for different colours the
successive prints being applied in correct register.
Having now particularly described and ascertained the naturo of my said
invention, and in what manner the same is to be performed I declare that what
I claim is:
The herein described process for printing or producing pictures on enamelled iron
by printing the design on unsized paper, pressing the print to the enamel and after
stripping off the print dusting with ceramic colour and firing.
1
Dember 1884