IMPROVEMENTS IN THE MANUFACTURE OF PLIABLE PLATES AND SURFACES AS A SUBSTITUTE FOR GLASS FOR PHOTOGRAPHIC AND OTHER PURPOSES
Year: 1883

page_text: LETTERS PATENT to Joseph Julius Sachs, of 8 Union Court, Old Broad
Street, in the City of London, for an Invention of "IMPROVEMENTS IN THE
MANUFACTURE OF PLIABLE PLATES AND SURFACES AS A SUBSTITUTE FOR
GLASS FOR PHOTOGRAPHIC AND OTHER PURPOSES" communicated to him from
Messieurs Fickeissen and Becker, resident at Villingen, Badon, Germany
PROVISIONAL SPECIFICATION left by the said Joseph Julius Sachs at the
Office of the Commissioners of Patents on the 14th August 1883.
"
JOSEPH JULIUS SACHS of 8 Union Court Old Broad Street in the City of
London "IMPROVEMENTS IN THE MANUFACTURE OF PLIABLE PLATES AND
SURFACES FOR GLASS FOR PHOTOGRAPHIC AND OTHER PURPOSES [communicated
to him from Messieurs Fickeisson and Bocker, resident at Villingen, Baden,
Germany]
This Invention relates to the manufacture of pliable plates and surfaces for
various purposes, theso plates or surfaces can be prepared from paper cloth or other
suitable fabrics or materials but by preference from white paper which contains
very little glue and does not possess much grain-This paper is first extended on
a frame or other arrangement according to the size of the plate or surface which is
desired. After it is dry the surface is covered in any convenient manner with a
fine varnish or composition such as copal varnish for the purpose of rendering the
fabric transparent it is then dried and after it is quite dry the surface is rendered
smooth by the application of powdered pumice stone or other suitable material
or it may be smoothed by suitable machinery-This process of smoothing might
be repeated two or three times until the surface or plate is smooth and transparent-
The surface so prepared is then covered on one or both sides with a solution of
gelatine isinglass or other substance possessing similar properties and allowed to
dry. The surface so prepared may be further treated with a preparation of
Ox-gall from which the fatty matter has been extracted by Acetate of Alumina

page_text: or similarly acting Agents which will precipitate the fat of the gall the resulting
preparation being then passed through a filter whereby a clear solution will bo
obtained with which the plate or surface may be covered so as to secure the safe
reception of the emulsion for photographic or other use-the ox-gall might be
replaced by similarly acting substance or material.
The plates or sheets prepared as above may be used with great advantage in
reproducing photographs from nature in lines or stipples for calico and other
printing as the stipples or lines can be printed first on the material before it is
made transparent-any photographic design or drawing can be put on the
transparent surface in the usual way and by using the said film as a negative or 1
positive in photographing from nature or from drawings any half tones will be
reproduced in lines and stipples available for any kind of printing As these plates
or sheets are water proof they can also be used as surfaces upon which can be
printed or produced all kinds of ornamental and useful work
5

page_text: SPECIFICATION in pursuance of the conditions of the Lotters Patent filed
by the said Joseph Julius Sachs in the Patent Office on the 13th February
1884.
"
JOSEPII JULIUS SACHS of 8 Union Court Old Broad Street in the City of
London "IMPROVEMENTS IN THE MANUFACTURE OF PLIABLE PLATES AND
SURFACES AS A SUBSTITUTE FOR GLASS FOR PHOTOGRAPHIC AND OTHER PURPOSES
a communication to me from Messieurs Fickeissen and Becker, resident at Villingen,
Baden, Germany
This Invention relates to the manufacture of pliable plates and surfaces for
various purposes these plates or surfaces can be prepared from paper cloth or other
suitable fabrics or materials but by preference from white paper which contains
very little size and does not possess much grain. This paper is first extended on a
frame or other arrangement according to the size of the plate or surface which is
desired. After it is dry the surface is covered in any convenient manner with a
fine varnish or composition such as copal varnish for the purpose of rendering the
fabric transparent, it is then dried and after it is quito dry the surface is rendered
smooth by the application of powdered pummice stone or other suitable material
or it may be smoothed by suitable machinery. This process of smoothing may be
repeated if necessary two or three times until the surface or plate is smooth or
transparent. The surface so prepared is then covered on one or both sides with a
solution of gelatine Isinglass or other substance possessing similar properties and
allowed to dry. The surface so prepared mnay if desired be further treated with
a preparation of ox-gall from which the fatty matter has been extracted by
Acetate of Alumina or similarly acting agents which will precipitate the fat of the
gall the resulting preparation being then passed through a filter whereby a cloar
solution will be obtained with which the plate or surface may be covered so as to
secure the safe reception of the emulsion for Photographic or other use. Instead of
ox-gall any similarly acting substance or material may be used.
The plates or sheets prepared as above may be used with great advantage in
reproducing Photographs from nature in lines or stipples for calico and other
printing as the stipples or lines can be printed first on the material before it is
mado transparent-Any Photographic design or drawing can be put on the
transparent surface in the usual way and by using tho said film as a negativo or
positive in Photographing from nature or from drawing half tones will be
reproduced in lines and stipples available for any kind of printing-As these plates
or sheets are waterproof they can also be used as surfaces upon which can be printed
or produced all kinds of ornamental and useful work.
Having now described and particularly ascertained the nature of my said Inven-
tion and the manner in which the same is or may be used or carried into effect I
would observe in conclusion that what I consider to be novel and original and
therefore claim as the Invention secured to me by the hereinbefore in part recited
Letters Patent is. The manufacture of pliablo plates or surfaces by treating paper
or other fabric in the manner hereinbefore described.
In witness whereof I the said Joseph Julius Sachs have to this my Specification
set my hand and seal this thirteenth day of February One thousand eight hundred
and eighty four.