IMPROVE- MENTS IN TRANSPARENT SLIDES FOR MAGIC LANTERNS AND OTHER SIMILAR PURPOSES.
Year: 1865

page_text: LETTERS PATENT to Samuel Solomons, of No. 39, Albemarle Street, in
the County of Middlesex, Gentleman, for the Invention of "IMPROVE-
MENTS IN TRANSPARENT SLIDES FOR MAGIC LANTERNS AND OTHER SIMILAR
PURPOSES.
Sealed the 3rd April 1866, and dated the 1st November 1865.
PROVISIONAL SPECIFICATION left by the said Samuel Solomons
at the Office of the Commissioners of Patents, with his Petition, on
the 1st November 1865.
I, SAMUEL SOLOMONS, of No. 39, Albemarle Street, in the County of
Middlesex, Gentleman, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN TRANSPARENT SLIDES FOR MAGIC LANTERNS AND OTHER
SIMILAR PURPOSES," to be as follows:-
This Invention relates chiefly to an improvement in or adaptation of the
art or process of chromo-lithography or printing in colors from stone, whereby
such art or process is rendered applicable to the printing of transparent
slides for magic or phantasmagoria lanterns, and for other similar purposes.

page_text: Hitherto chromo-lithography has been used only with opaque or partially
opaque colors, and has been applied only to paper or other similar opaque or
partially opaque substances.
Now my Invention consists in printing the subject of the transparent slide
in colors from stone as in the chromo-lithographic process, but using only
such colors as are transparent, that is to say, those colors that are usually
employed in painting such transparent slides upon glass by hand. And
instead of printing upon paper or other similar material I print with such
transparent colors upon thin sheets of colorless gelatine or other suitable
transparent material; and I mount such gelatine or other transparent prints
between thin sheets or plates of glass in a metal, wooden, or other frame
for use as magic lantern or phantasmagoria slides, or for other similar
purposes.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Samuel Solomons in the Great Seal Patent Office on the
30th April 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SAMUEL
SOLOMONS, of No. 39, Albemarle Street, in the County of Middlesex, Gentle-
man, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the First day of November, in the year of our Lord
One thousand eight hundred and sixty-five, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Samuel Solomons, Her special license that I, the said Samuel
Solomons, my executors, administrators, and assigns, or such others as
I, the said Samuel Solomons, my executors, administrators, or 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 "IMPROVEMENTS IN TRANSPARENT SLIDES FOR MAGIC LANTERNS AND OTHER
SIMILAR PURPOSES," upon the condition (amongst others) that I, the said
Samuel Solomons, my executors or administrators, by an instrument in
writing under my hand and seal, or under the hand and seal of one of them,
should particularly describe and ascertain the nature of the said Invention,

page_text: 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 Samuel Solomons, do hereby
declare the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement in writing, that is to say :-
This Invention relates chiefly to an improvement in or adaptation of the art
or process of chromo-lithography or printing in colors from stone, whereby
such art or process is rendered applicable, as herein-after described, to the
printing of transparent slides for the magic or phantasmagoria lantern and for
other similar purposes. It consists in printing and finishing in the manner
herein-after described the subject of the transparent slide. The process of
printing is similar to that usually employed in the chromo-lithographic
process, but the colors that are used for my purpose are not the colors
hitherto used in the chromo-lithographic process, but are transparent like
those employed in painting transparent slides by hand, or such other colors as
are equally transparent.
In one of the methods employed by me I print with such transparent
colors upon sheets of colorless gelatine or other suitable transparent material,
and I then mount such transparent prints between or upon thin sheets or
plates of glass in a suitable metal, wooden, or other frame; or I print the
subject by the chromo-lithographic process, as aforesaid, in transparent colors
on what is ordinarily called transfer paper or other suitable material having
a prepared surface consisting of a suitable soluble substance which will allow
of the design printed upon it being removed and transferred on to a sheet of
glass by liquifying or dissolving the surface.
Having printed the design or subject upon a prepared surface, I then
transfer it to a suitable sheet of glass, and afterwards varnish and mount it in
a suitable frame. In point of economy the latter mode of printing and
finishing transparent slides will be found preferable to that above described.
Although I have described my process as being specially applicable to
transparent slides for magic lanterns, it may be readily applied to printing and
finishing other transparent slides, such as those prepared for stereoscopic or
other purposes.
Having now described the nature and object of my said Invention of
"Improvements in Transparent Slides for Magic Lanterns and other similar
Purposes," together with the manner in which the same is to be, or may be

page_text: performed or carried into practical effect, I would remark, in conclusion, that
I claim as my Invention the application of the process of printing in trans-
parent colors to the production of transparent slides as above described.
In witness whereof, I, the said Samuel Solomons, have hereunto set
my hand and seal, this Thirtieth day of April, in the year of our
Lord One thousand eight hundred and sixty-six.
S. SOLOMONS. (L.S.)