Improvements in the Manufacture of Gelatinized Paper or other Fabric suitable for the Reproduction, by Printing with Fatty. Inks, of Writings, Drawings, and the like.
Year: 1896

page_text: Date of Application, 22nd Jan., 1895.
Complete Specification Left, 1st Oct., 1896-Accepted, 22nd Jan. 1897
Improvements in the Manufacture of Gelatinized Paper or other
Fabric suitable for the Reproduction, by Printing with Fatty.
Inks, of Writings, Drawings, and the like.
1, CLAUDE RAYMOND of Suresnes, Seine, France, Manufacturer, do hereby
declare the nature of this invention. to be as follows:-
This invention.bas reference to the manufacture of gelatinized paper. or other
fabric such as is used for the reproduction by printing, with fatty inks of writings,
drawings and the like.
I begin by making, the paper or fabric according to the usual processes that is
to say with a solution of gelatine, water and glycerine.. The gelatine bath is heated
until it is sufficiently fluid to be spread upon the paper and this state of fluidity is
maintained by heat. The paper to be coated with gelatine is caused to travel
through the bath. On leaving the bath. the under surface is scraped so as to leave
only a trace of gelatine. The travel of the paper through the machine is
continuous, and it is cooled until the gelatinous layer has become quite coagulated.
It is at this part of the manufacture that my invention is applied.
The invention consists in damping the lower face of the gelatinized paper with
a solution composed of a metallic salt such as sulphate of copper, iron, zinc, lead &c.,
and a bichromate,-one or other of these salts, or several of them mixed (solution
of 2 per cent.).
This damping which can be applied mechanically or by hand passes through the
paper and enters partly into the layer of coagulated. gelatine.
The ordinary apparatus can be employed, with the addition of a vessel containing
the solution alove referred to situated where the paper leaves the gelatinizing
apparatus to pass. to the drying appliances. A roller partly submerged in the
solution in this vessel revolves in contact with the lower face of the paper.
The advantages derived from my invention are:-
1. The strength of the paper or fabric is increased by rendering it nearly
impermeable to water and insoluble, and by absolutely fixing the gelatine.
2. The thickness of the layer of gelatine can be diminished and consequently
the fineness of the transfer can be increased and the humidity while. printing. can
be better maintained.
3. The ink for the original writing or drawing being composed of a metallic
salt such as silver, uranium, mercury &c., colored with aniline, the affinity of the
metals of this category and the metals employed in damping the paper. as..above.
described, iron, copper, zinc &c., will have the effect of forming by contact a
combination which will considerably increase the firmness of the transfer.
Dated this 22nd day of January 1896.
J. C. MEWBURN &. ELLIS,
55.and 56 Chancery Lane, London, Chartered Patent Agente.

page_text: Improvements in the Manufacture of Gelatinized Paper or other
Fabric suitable for the Reproduction, by Printing with Fatty
Inks, of Writings, Drawings, and the like.
I, CLAUDE RAYMOND of Suresnes, Seine, France, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
This invention has reference to the manufacture of gelatinized paper or other
fabric such as is used for the reproduction by printing with fatty inks of writings,
drawings and the like.
I begin by making the paper or fabric according to the usual processes that is
to say with a solution of gelatine, water and glycerine. The gelatine bath is
heated until it is sufficiently fluid to be spread upon the paper and this state of
fluidity is maintained by heat. The paper to be coated with gelatine is caused
to travel through the bath. On leaving the bath the under surface is scraped so
as to leave only a trace of gelatine. The travel of the paper through the machine
is continuous, and it is cooled until the gelatinous layer has become quite coagulated.
It is at this part of the manufacture that my invention is applied.
The invention consists in damping the lower face of the gelatinized paper with a
solution composed of a metallic salt such as sulphate of copper iron, zinc, lead, &c.,
and a bichromate or chromate one or other of these salts, or several of them
mixed (solution of 2 per cent.).
This damping which can be applied mechanically or by hand passes through the
paper and enters partly into the layer of coagulated gelatine.
The ordinary apparatus can be employed with the addition of a vessel containing
the solution above referred to situated where the paper leaves the gelatinizing
apparatus to pass to the drying appliances. A roller partly submerged in the
solution in this vessel revolves in contact with the lower face of the paper.
A suitable arrangement of apparatus for carrying out this part of my invention
is illustrated in a diagrammatic manner in the accompanying drawing.
In this drawing, a is a horizontal felt-covered roller capable of revolving with
its lower portion immersed in the solution above referred to which is contained in a
vessel or trough b. The roller a is driven from a suitable part of the machine and
is caused to revolve in the opposite direction to the direction of travel of the
paper e which comes from the gelatinizing apparatus and passes over the roller a
with its lower face in contact therewith.
The solution in the trough bis kept at such a level as to continually moisten the
surface of the roller and is replenished by hand as its level falls.
The advantages derived from my invention are:-
1. The strength of the paper or fabric is, increased by rendering it nearly
impermeable to water and insoluble, and by absolutely fixing the gelatine.
2. The thickness of the layer of soluble gelatine can be diminished and
consequently the fineness of the transfer can be increased and the humidity while
printing can be better maintained.
3. The ink for the original writing or drawing being composed of a metallic salt
such as of silver, uranium, mercury, &c., colored with aniline, the affinity of the
metals of this category and the metals (iron, copper, zinc, &c.,) employed in
damping the paper as above described will have the effect of forming by contact
a combination which will considerably increase the firmness and penetration of the
transfer.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The application to the lower surface of a paper or other fabric which has
been gelatinized of a suitable solution of one or more metallic salts with or without
a bichromate or chromate, substantially as and for the purposes bereinbefore
set forth.
2. As a new article of manufacture, the improved gelatinized paper or fabric
produced substantially as herein described.
bom 10ne
J. C. MEWBURN & ELLIS,
55 and 56 Chancery Lane, London, Chartered Patent Agents.