IMPROVEMENTS IN PAPER AND PARCHMENT
Year: 1872

page_text: LETTERS PATENT to Heinrich Edward Wagner, of Copitz, near
Dresden, in the Empire of Germany, but at present of No. 20,
Southampton Buildings, Chancery Lane, in the County of Middlesex,
for the Invention of "IMPROVEMENTS IN PAPER AND PARCHMENT.
PROVISIONAL SPECIFICATION left by the said Heinrich Edward
Wagner at the Office of the Commissioners of Patents, with his
Petition, on the 18th November 1872.
I, HEINRICH EDWARD WAGNER, of Copitz, near Dresden, in the
Empire of Germany, but at present of No. 20, Southampton Buildings,
Chancery Lane, in the County of Middlesex, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN PAPER AND PARCH-
MENT," to be as follows:-
My Invention has for its object so to prepare paper or parchment that
it is rendered more or less transparent, and that any writing or drawing
thereon with ink, colour, pencil, or crayon can be readily and completely
removed therefrom by washing, without in any way impairing the paper

page_text: or parchment. For this purpose I saturate the paper (by preference
writing paper) or the parchment with benzine, and I then immediately
coat the paper or parchment with a suitable fluid siccative or rapidly
drying varnish before the benzine can evaporate. Such siccative or
varnish is by preference applied by immersing the paper or parchment in
a bath thereof, or it may be applied with a brush or sponge.
the siccative coating is dry the paper or parchment is ready for use.
When
Instead of benzine, turpentine or analogous substances may be used
for saturing the paper or parchment, but I prefer to use benzine as above
described. The paper or parchment so prepared is more or less trans-
parent, and may be used for writing or drawing purposes, its transparency
affording great facility for tracing thereon writings or drawings, and, as
the writing or drawing, whether in ordinary or copying ink, indian ink,
colour, pencil, or crayon, can be readily and completely removed by
washing, and other writing or drawing can then be made on the surface,
it will be seen that the prepared paper or parchment is applicable to a
number of purposes for which ordinary paper or parchment cannot be
employed.
By writing on such prepared paper or parchment with copying ink,
one or more press copies may be readily taken therefrom by simply
laying moistened copying paper thereon, and pressing upon the same by
hand.
The paper which I employ for the above purpose may either be white,
in which case it will be transparent when prepared as above described, or
it may be of any colour, in which case it will be more or less opaque.
The paper may also be of any thickness, and when thick paper is
employed it may be conveniently used as writing tablets.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Heinrich Edward Wagner in the Great Seal Patent
Office on the 15th April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HEINRICH
EDWARD WAGNER, of Copitz, near Dresden, in the Empire of Germany,
but at present of No. 20, Southampton Buildings, Chancery Lane, in
the County of Middlesex, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighteenth day of November, in the year of our
Lord One thousand eight hundred and seventy-two, in the thirty-sixth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Heinrich Edward Wagner, Her special license
that I, the said Heinrich Edward Wagner, my executors, administrators,
and assigns, or such others as I, the said Heinrich Edward Wagner, my
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 "IMPROVEMENTS
IN PAPER AND PARCHMENT," upon the condition (amongst others) that I,
the said Heinrich Edward Wagner, my executors or administrators, by
an instrument in writing under my, or their, or one of their hands and
seals, 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 Heinrich Edward Wagner, 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 :—
My Invention has for its object so to prepare paper or parchment that
it is rendered more or less transparent, and that any writing or drawing
thereon with ink, color, pencil, or crayon can be readily and completely
removed therefrom by washing, without in any way impairing the paper
or parchment. For this purpose I saturate the paper (by preference
writing paper) or the parchment with benzine, and then immediately
coat the paper or parchment with a suitable fluid siccative or rapidly
drying varnish before the benzine can evaporate.
A siccative or varnish which I find suitable for this purpose is prepared
as follows: -To one pound of lead chips I add five pounds of oxide of
zinc, or two and a half pounds of oxide of zinc with two pounds of
litharge, also half a pound of hardened Venetian turpentine. This mix-
ture is boiled for about eight hours in twenty pounds of the best clarified
linseed varnish. After the compound has cooled and stood some days to

page_text: The paper which I employ for the above purpose may either be white,
in which case it will be transparent when prepared as above described,
or it may be of any color, in which case it will be more or less opaque.
The paper may also be of any thickness, and when thick paper is
employed it may be conveniently used as writing tablets.
Having thus described the nature of the said Invention, and in what
manner the same is to be performed, I claim the use of washable paper
or parchment prepared in the manner and for the purposes substantially
as herein described.
In witness whereof, I, the said Heinrich Edward Wagner, have
hereunto set my hand and seal, this Twelfth day of April, in
the year of our Lord One thousand eight hundred and seventy-
three.