IMPROVEMENTS IN MATERIALS FOR COPYING LETTERS, WRITINGS, AND DELINEATIONS USED IN THE PROCESS CALLED THE PAPYROGRAPHIC
Year: 1876

page_text: LETTERS PATENT to Eugenio de Zuccato, of 81, Great Queen Street, Lincoln's
Inn Fields, London, for the Invention of "IMPROVEMENTS IN MATERIALS FOR
COPYING LETTERS, WRITINGS, AND DELINEATIONS USED IN THE PROCESS CALLED
THE PAPYROGRAPHIC."
Sealed the 28th. July 1876, and dated the 1st February 1876.
"
PROVISIONAL SPECIFICATION left by the said Eugenio de Zuccato at the
Office of the Commissioners of Patents on the 1st February 1876.
EUGENIO DE ZUCCATO, of 81, Great Queen Street, Lincoln's Inn Fields, London.
IMPROVEMENTS IN MATERIALS FOR COPYING LETTERS, WRITINGS, AND DELINEA-
TIONS USED IN THE PROCESS CALLED THE PAPYROGRAPHIC."
My Invention relates to improvements in the materials used in the process for
producing facsimile copies of writings, drawings, and delineations, for which Letters
Patent have been granted to me bearing date respectively 28th March 1874,
No. 1078, and the 15th September 1874, No. 3150; and my Invention refers, firstly,
to the paper used in the said process called papyrographic paper, and to the pad
called the papyrographic pad; I prefer to use the paper called "bank post” which
has been highly sized and well rolled. This paper is to be coated or covered on
the side which is to be written on with an impermeable or waterproof substance,
and by preference I use a solution of gamboge in spirits of wine in the proportion,
say of half a pound of gamboge to 5 parts of methylated spirit, to which may
be added one ounce and a quarter of Venice turpentine. The other side of the
sheet of paper should also be coated or covered with an impermeable or water-
proof substance, such as resin dissolved in spirits of wine or oil of turpentine, but
I prefer the composition known in trade as gilder's lacquer, to three parts of
which I usually add two parts of methylated spirit and one-sixteenth of Venice
turpentine. The above compositions or substances are to be laid evenly over the
surface of the paper, which will be best done by a fine brush, and sometimes it
may be necessary to apply two or three coats, and the paper must be thoroughly
dried before using it.
My improvements in the pad, the use of which is to support the stencil and to
supply the papyrographic printing solution in the course of printing, are as
follows:-I take a piece of pasteboard of the required size, and about 12
sheets of good blotting paper, and enclose the whole in a piece of waterproof cloth
such as macintosh, which must be stuck upon the piece of pasteboard.
To render
thoroughly waterproof the edges of the paper a waterproof solution, such as a
solution of india-rubber, must be used, and on the top of this pad a piece of cloth,
velvet, or some such substance, is caused to adhere by any sticky matter, and this
is to be saturated with the papyrographic printing solution used in the process. The
[Price 2d.]

page_text: pad must be made slightly larger than the space occupied by the writing, drawing, or
delineation that has been written or drawn on the papyrographic paper and which it
is desired to copy, whilst it must be smaller than the area of the said papyrographio
paper, which must overlap its edges.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Eugenio de Zuccato in the Great Seal Patent Office on the 1st
August 1876.
EUGENIO DE ZUCCATO, of 81, Great Queen Street, Lincoln's Inn Fields, London.
"IMPROVEMENTS IN MATERIALS FOR COPYING LETTERS, WRITINGS, AND DELINEA-
TIONS USED IN THE PROCESS CALLED THE PAPYROGRAPHIC."
<<
My Invention relates to improvements in the materials used in the process for pro-
ducing facsimile copies of writings, drawings, and delineations for which Letters
Patent have been granted to me bearing date respectively 28th March 1874,
No. 1078, and the 15th September 1874, No. 3150; and my Invention refers firstly,
to the paper used in the said process called papyrographic paper, and to the pad
called the papyrographic pad; I prefer to use the paper called
bank post
which has been highly sized and well rolled. This paper is to be coated or
covered on the side which is to be written on with an impermeable or waterproof
substance, and by preference I use a solution of gamboge in spirits of wine in the
proportion say of half a pound gamboge to five pints of methylated spirit, to which
may be added one ounce and a quarter of Venice turpentine. The other side of the
sheet of paper should also be coated or covered with an impermeable or waterproof
substance, such as resin dissolved in spirits of wine or oil of turpentine, but I
prefer the composition known in trade as gilder's lacquer, to three parts of which
I usually add two parts of methylated spirit and one-sixteenth part of Venice tur-
pentine. The above compositions or substances are to be laid evenly over the surface
of the paper, which will be best done by a fine brush, and sometimes it may be neces-
sary to apply two or three coats, and the paper must be thoroughly dried before
using it.
My improvements in the pad, the use of which is to support the stencil and to
supply the papyrographic printing solution in the course of printing, are as
follows I take a piece of pasteboard of the required size, and about twelve
sheets of good blotting paper, and enclose the whole in a piece of waterproof cloth,
such as macintosh, which must be stuck upon the piece of pastboard. To render
thoroughly waterproof the edges of the paper a waterproof solution such as a
solution of india-rubber must be used, and on the top of this pad a piece of cloth,
velvet, or some such substance is caused to adhere by any sticky matter, and this
is to be saturated with the papyrographic printing solution used in the process.
The pad must be made slightly larger than the space occupied by the writing,
drawing, or delineation that has been written or drawn on the papyrographic paper,
and which it is desired to copy, whilst it must be smaller than the area of the said
papyrographic paper which must overlap its edges.
In witness whereof, I, the said Eugenio de Zuccato, have hereunto set my
hand and seal, this Twenty-fourth day of July, in the year of our Lord One
thousand cight hundred and seventy-six.
Witness,
CHARLES BARLOW,
Patent Agent,
23, Southampton Bldgs., W.C.
EUG. DE ZUCCATO. (L.S.)