Year: 1886

page_text: I, ALEXANDER BROWNE of 9 and 10 Southampton Buildings Holborn in the
County of Middlesex Patent Agent do hereby declare this invention to be as
follows:-
This invention consists in improvements on a former invention for which Letters
Patent were granted to John Clayton. Mewburn being a communication from the said
Louis Jacques Henri Cellerier dated the 23rd day of April 1885 and numbered 5052
and the present improvements relate to the means whereby the product of the second
operation (described in the specification of the aforesaid former Letters Patent) is
applied with mathematical exactness upon the product of the first operation so that
the photographic image of the said second operation strictly coincides with the colored
silhouette described in the first operation also the subsequent treatment of the colored
silhouette and pellicle described in the third operation in order to obtain a thoroughly
artistic picture with the maximan amount of freshness and depth of the colors.
First the paper I employ to produce the colored silhouette should be very smooth
rather transparent and prepared with arrowroot or substance of a like nature, this
description of paper I have found more suitable for the purpose than any other.
Secondly. The paper must be moistened on the back before putting on the colors
so that when it is damped again in the third operation as hereafter described (in order
that the colored silhouette may adhere to the pellicle) the colors may necessarily be in
perfect register with the image on the pellicle.

page_text: In the third operation the paper forming the colored silhoutte is again damped on
the back which I effect by floating it on water colored face upwards so that it may
stretch as when previously damped by which means the colors when the picture
has been completed will be found to be in perfect register with the image on the
pellicle.
After having operated as above I steam the paper and pellicle which has the twofold
and important advantage of causing the adhesion of the colored silhoutte and the
pellicle without, moistening this latter or the face of the former which if done would
produce dull pictures that is to say of a greyish tint whilst the exposure to steam in
the manner above described causes them to retain their maximan freshness and depth
in a word all their artistic value.
01
T
1
1000

page_text: I ALEXANDER BROWNE of 9 and 10 Southampton Buildings Holborn in the
County of Middlesex Patent, Agent do hereby declare this invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement, (communicated from abroad by Louis Jacques
Henri Cellerier of Asnieres, France, Photographic Chemist):
:-
This invention has for its object the production of colored photographs by an
improved process so that the beauty of detail of the photograph remains unimpaired.
I in the first place take a negative in the ordinary way and from the same I produce
an ordinary carbon print by what is known as the double carbon process.
I then take an ordinary silver print from the negative and place it with a sheet of
paper of fine evenly expanding texture coated with arrowroot or similar starchy
substance in a bath of cold water and when properly saturated I bring the two into
contact evenly the paper being uppermost and when this is done they are placed in
this position on an ordinary retouching desk when the outline of the silver print will
be seen through the aforesaid paper giving a guide to indicate where the colors
required should be laid on. The colors are ordinary moist colors and are laid on
where necessary evenly in flat washes detail not being necessary. During the painting
the paper and silver print should be kept damp to ensure contact. When the painting
is finished I proceed to the next process which has for its object the superposition of
the carbon print on or over the colored paper. To carry out this process I proceed
as follows. Firstly-1 float the paper having the color upon it on the surface of
cold water in a suitable vessel with the color uppermost and when it is sufficiently
saturated and expanded to fit the print on the glass above described the two are
brought together and firmly pressed. Great care is necessary in this operation to
properly register the paper having the color. upon it with the film on the glass which
film has had an extra coat of gelatine put upon it in order that the paper may adhere
to the film. The paper is then subjected to the action of steam until the paper and
the pellicle upon the glass firmly adhere to each other when the paper is dry it can be
stripped off the glass with the pellicle adhering to it. It is then placed in a moderately
strong solution of alum, washed, finished and mounted in the ordinary way. The

page_text: result is a highly finished colored photograph leaving the original photograph perfect
in all its tones, lines and shades.
Having now particularly described and ascertained the nature of this said invention
and in what manner the same is to be performed I declare that what I claim.is :— .
Producing colored photographic pictures in the manner and by the process
described.