AN IMPROVED MATERIAL FOR TRANSFER PRINTING
Year: 1857

page_text: LETTERS PATENT to Joseph Glover, of Liverpool, Photographer, and
John Bold, also of Liverpool aforesaid, in the County of Lancaster,
Watch and Clock Maker, for the Invention of "AN IMPROVED MATERIAL
FOR TRANSFER PRINTING."
Sealed the 16th February 1858, and dated the 21st August 1857.
PROVISIONAL SPECIFICATION left by the said Joseph Glover and John
Bold at the Office of the Commissioners of Patents, with their Petition,
on the 21st August 1857.
We, JOSEPH GLOVER, of Liverpool, Photographer, and JOHN BOLD, also, of
Liverpool aforesaid, in the County of Lancaster, Watch and Clock Maker,
do hereby declare the nature of the said Invention for "AN IMPROVED MATERIAL
FOR TRANSFER PRINTING," to be as follows:
This Invention consists in flushing the surface or flux of white or tinted
opal glass, or plain or colored enamel, enamelled metals, or other transparent
or opaque mineral substances capable of receiving oil or ink impressions by
the transfer process of printing, which we propose to effect by operating upon
the surface or flux of the said materials with fluoric acid or by grinding, for
the purpose of destroying the gloss, thereby rendering the material sufficiently
porous or permeable to receive and retain the oil, ink, or other coloring matter
of which the impression to be transferred may be composed.
By the use of the above improved material, the necessity for firing, as

page_text: commonly practised with enamel, is entirely dispensed with, and the process
of printing rendered more simple, less costly, and more durable than the
means at present employed of transfer printing on enamel and other mineral
substances.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph Glover and John Bold in the Great Seal Patent
Office on the 20th February 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOSEPH
GLOVER, of Liverpool, Photographer, and JOHN BOLD, also of Liverpool
aforesaid, in the County of Lancaster, Watch and Clock Maker, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-first day of August, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twenty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Joseph Glover and John Bold, Her special licence that we, the said
Joseph Glover and John Bold, our executors, administrators, and assigns,
or such others as we, the said Joseph Glover and John Bold, our 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 "AN IMPROVED MATERIAL FOR TRANSFER
PRINTING," upon the condition (amongst others) that we, the said Joseph
Glover and John Bold; our executors or administrator's, by an instrument
in writing under our or their hands and seals, or under the hand and seal of
one of us or them, should particularly describe and ascertain the nature of
the said Invention, 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 John Bold, do hereby declare the nature
of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
thereof, that is to say:-
This Invention consists, firstly, in the use or employment of enamelled

page_text: glass for the purposes of transfer printing; and, secondly, in flushing the
surface or flux of white or tinted opal glass, or plain or colored enamel,
enamelled metals, or other transparent or opaque mineral substances capable
of receiving oil or ink impressions by the transfer process of printing, which
we propose to effect by operating upon the surface or flux of the said
materials with fluoric acid or by grinding, which relieves it of its smoothness,
thereby rendering the material sufficiently porous or permeable to receive and
retain the oil, ink, or other coloring matter, of which the impression to be
transferred may be composed. By the use of the above improved material,
the necessity of dusting the impression with color after transferring, is
dispensed with, and the process of printing rendered more simple, less costly,
and more durable than the means at present employed of transfer printing on
enamel and other mineral substances.
Having now described the nature and object of our said Invention of "An
Improved Material for Transfer Printing," together with the best means we
are acquainted with for carrying the same into practical effect, we hereby
declare our Invention to consist in, and we claim,-
First, the use or employment of enamelled glass as a material for transfer
printing.
And, secondly, the treating or flushing the surface or flux of white or tinted
opal glass, or plain or colored enamel, enamelled metals, or other transparent
or opaque mineral substances with fluoric acid, or by grinding for the purpose
of transfer printing thereon, as above stated.
In witness whercof, I, the said John Bold, have hereunto set my
hand and seal, this Twentieth day of February, in the year of our
Lord One thousand eight hundred and fifty-eight.
Witness,
ALEX. PRINCE, Patent Agent,
4, Trafalgar Square, Charing Cross.
JOHN BOLD. (L.S.)