Improvements in and relating to the Art of Producing Transferable and Vitrifiable Designs for Purposes of Ornamentation.
Year: 1893

page_text: e of Application, 14th Mar., 1893-Accepted, 15th Apr., 1893
COMPLETE SPECIFICATION.
Improvements in and relating to the Art of Producing Transferable
and Vitrifiable Designs for Purposes of Ornamentation.
I, FRANCOIS SCHMALZ, a citizen of the United States of America, residing at
No. 22 West Twenty-second Street, in the City, County and State of New York,
one of the United States of America, 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:—
The object of my invention is to provide a process and a transferable design, by
which articles made of glass, porcelain, enameled metals, or other vitrifiable wares,
may be ornamented cheaply and artistically with enamel or vitrifiable colors, so
that the ornamentation cannot be destroyed without destroying the article
ornamented.
To carry my invention into effect, a suitable paper backing is first prepared to
receive the design by being coated on one side with dextrin, which is soluble in
cold water. When the film so formed has become dry, the desired design is formed
thereon in any suitable manner with vitrifiable colors held in suspension in a
suitable varnish.
I prefer; however, to form the design on the soluble film by printing the same
thereon with a suitable printing block, using lithographers' varnish instead of ink
as a vehicle for the colors, and then dusting or sprinkling the vitrifiable colors onto
the design in a finely pulverized form while still wet, so that said colors will stick
to and be held in place on the soluble film when the varnish becomes dry.
If the design is-to be of more than one color, it should receive an impression
and be sprinkled over with each color, and be allowed to dry after each printing,
and before another impression is made.
After the design thus formed has become dry, it, and preferably the entire
soluble film is covered with a film of collodion by flowing liquid collodion over the
design in the manner photographers flow it over photographic plates, and when
the collodion film is dry, the design is ready for use.
I use collodion for the film over the design because it is volatilizable under heat,
and when burned away leaves no perceptible ash.
To transfer such designs to an article to be ornamented, I wet the collodion film
and then press it against said article and allow it to dry. After it has become dry,
I saturate the backing with water, thereby dissolving the soluble film, and then
remove said backing, when the collodion film will be found carrying the design and
adhering to the article, ready to be burned into the same.
The operation of burning in the design is performed in the well known manner
by placing the article having the design attached thereto in a porcelain decorator's
furnace, and then subjecting the same to a sufficient heat to melt-and vitrify the
colors, and burn them into the surface of the article.
During the burning, both the collodion film and the varnish which holds the
colors in place will be volatilized or burned up, leaving no ash or stain on the ware,
the colors only burning into and coloring the same.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The herein described process of ornamenting vitreous wares, which consists
in forming a soluble film upon a suitable backing, forming a design upon such film
in vitrifiable colors held in suspension in a suitable varnish covering the design
with a film of collodion, affixing the collodion film to the article to be ornamented,
.
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page_text: dissolving the soluble filn, removing the backing, and subjecting the article to
sufficient heat to burn in the vitrifiable colors, substantially as described.
2. A transferable design formed in vitrifiable or enamel colors upon a soluble
coating or film mounted upon a suitable backing, and covered with a film of
collodion, substantially as described.
3. A transferable design formed in vitrifiable or enamel colors upon a soluble
coating or film mounted upon a backing of paper and covered with a film which
will volatilize or burn up when subjected to the action of heat, substantially as
described.
4. A transferable design formed in vitrifiable or enamel colors upon a coating
or film of dextrin mounted upon a backing of paper, and covered with a film of
collodion, substantially as described.
Dated this 11th day of March 1902
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.