IMPROVEMENTS CONSISTING OF EXTENDED USES OF PHOTOGRAPHY. AS APPLIED TO DIALS, TABLETS, AND PICTURES
Year: 1857

page_text: LETTERS PATENT to Joseph Glover, of Liverpool, Photographer, and John
Bold the younger, also of Liverpool aforesaid, in the County of Lan-
caster, Watch and Clock Maker, for the Invention of "IMPROVEMENTS
CONSISTING OF EXTENDED USES OF PHOTOGRAPHY. AS APPLIED TO DIALS,
TABLETS, AND PICTURES."
Sealed the 30th June 1857, and dated the 20th February 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 20th February 1857.
We, JOSEPH GLOVER, of Liverpool, Photographer, and JOHN BOLD the
younger, also of Liverpool aforesaid, in the County of Lancaster, Watch and
Clock Maker, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS CONSISTING OF EXTENDED USES OF PHOTOGRAPHY AS APPLIED TO DIALS,
TABLETS, AND PICTURES," to be as follows:-
This Invention consists in printing by photographic means impressions of
the required appearance upon white or tinted opal glass, or other substances
suitable for forming dials and tablets of every kind, as also for printing by
photographic means portraits and other pictures upon; and I treat or prepare
the surface of the substance which is to receive the impression by reducing--

page_text: or deadening the surface thereof by means of fluoric acid; and I finally
coat or cover the picture or impression with transparent varnish, formed of
shell lac and alcohol or otherwise.
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 August 1857.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOSEPH
GLOVER, of Liverpool, Photographer, and JOHN BOLD the younger, 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 Twentieth day of February, in the year of our Lord
One thousand eight hundred and fifty-seven, in the twentieth 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 license 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, oxercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS CONSISTING OF EXTENDED USES OF PHOTOGRAPHY.
AS APPLIED TO DIALS, TABLETS, AND PICTURES," upon the condition (amongst
others) that we, the said Joseph Glover and John Bold, our exccutors or
administrators, 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 bo 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 we, the said Joseph Glover and John Bold the
younger, do hereby declaro the nature of the said Invention, and in what
manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement thereof, that is to say:-

page_text: Our Invention consists in printing by photographic means impressions of
the required appearance upon white or tinted opal glass, or other vitrified
substances suitable for forming dials and tablets of every kind, as also for
printing thereon by photographic means portraits, pictures, and works of art
of every kind. The surface or flux of the substance intended to receive the
impression we prepare by reducing or deadening the surface by means of
fluoric acid or by grinding; and finally, we coat or cover the picture or
impression with varnish, formed either of shell lac and alcohol or otherwise.
In order to explain our said Invention as completely as possible, we now
proceed to describe the best means we are acquainted with for carrying the
same into practical effect, as follows:-
We take enamel glass, or glass flushed with opal or colored enamel,
enamelled metals, or other suitable mineral substances, and operate upon
them in the following manner:-We first wash the surface of the material
with fluoric acid to destroy the gloss, and thereby render the same slightly
porous and permeable, and when the gloss is entirely removed we then well
wash the surface thus operated upon with water. The material thus prepared
is now ready to receive the collodion, albumen, or other substance suited to
photographic purposes for receiving an image, picture, portrait, and every
description of fine arts, and may afterwards be immersed in a nitrate of silver
bath or other sensitizing solutions, and is then ready for being operated upon
in the camera, or for printing upon from a negative picture or otherwise, and
then developed and fixed, all of which processes are well known and commonly
practised. Translucent or transparent tablets and dials may be taken on
glass or other transparent, semi-transparent, or opaque substances by the
above process. By thus preparing the enamelled or other surface, pictures
or subjects printed thercon are rendered capable of receiving water colors, oil
colors, dry colors, and varnish colors.
Having now described the nature and object of our said Invention of
"improvements consisting of extended uses of photography as applied to
dials, tablets, and pictures," together with the best means we are acquainted
with for carrying the same into practical effect, we would remark, in conclusion,
that we hereby declare our Invention to consist in, and we claim,-
First, the extended uses of photography as applied to dials, tablets, and
pictures as above stated, and other works of art of every kind capable of
being produced by the abovo process.
Secondly, the treating or preparing of the surface of the materials of which

page_text: such said dials, tablets, and pictures are made by the use of fluoric acid, as
above stated.
In witness whereof, we, the said Joseph Glover and John Bold the
younger, have hereunto set our hands and seals, this Eighteenth day
of August, in the year of our Lord One thousand eight hundred and
fifty-seven.
JOSEPH GLOVER. (L.S.)
(L.S.)
JOHN BOLD, J*.
Witness to the signature of Joseph Glover,
ALEX. PRINCE,
4, Trafalgar Square, London.
Witness to the signature of John Bold the younger,
JAMES C. CRAMER,
75, Henry St, L'pool.