Year: 1887

page_text: Date of Application, 5th Apr., 1887.
Complete Left, 3rd May, 1887.
Complete Accepted, 17th May, 1887.
graphic Artist do hereby declare my invention to be as follows:-
This invention has for its object the production of permanent photographic
impressions whether colored or uncolored on any suitable material. In order to
produce colored photographic impressions according to this invention I first take a
negative in the ordinary way I then print a positive on paper porcelain or other
suitable material prepared as follows:-For paper I soak it in a weak solution of
gelatine and lactate of iron. The paper after having been immersed for about three
minutes in the above solution is dried and smoothed this may be done by placing
it between blotting paper. I next float the paper thus prepared on a bath of albumen,
chloride of sodium, bromide of potassium, acetic acid and a concentrated solution of
some derivative of silex or hydrocarbon of which I have found to be very suitable
salicylic acid prepared according to my invention and for which I intend to apply for
Letters Patent. Any tint may be given to this mass by adding the desired color
preferably in the form of a powder solved in alcohol..
After floating the paper it is then dried by a slow heat and ironed on the back.
I then prepare a bath of nitrate of soda and nitrate of silver and free ammonia. The
paper is to be floated on this bath for about two minutes and then dried in a dark
room after which it is fumigated in an atmosphere of ammonia and is then ready for
printing upon in the ordinary way. The prints must be soaked in a weak solution of
sulphuric acid to expel the Hypo-sulphite of soda and well washed. The printed
impression in a moist state is then mounted face uppermost on a piece of glass or
skeleton frame and when dried there applied to the back some substance to render it
impervious to moisture and the desired colors are then dabbed on by suitable means
and slightly stumped. The colors must be stronger than are required for the final
effect. The picture thus prepared is then subjected to the action of finely powdered
soluble glass after which it is sprayed or subjected to an atmosphere charged with a
weak alcoholic solution of salicylic acid or some derivative of silex or hydrocarbon.
The picture (face downwards) is then laid on a glass coated in the following manner

page_text: After having rubbed the glass with powdered silicon, I coat it with collodion and
when dry I recoat it with gelatine and again dry for use when the surface of the
coated plate is then moistened with kerosene in solution with a few drops of salicylic
acid and when moist the colored surface of the picture is well pressed upon the plate
and is allowed to dry in a warm atmosphere after which it is stripped from the glass and
when mounted on card porcelain, or other desired material produces a permanent
and finely finished colored photographic picture.
For printing on porcelain and such like material I coat the material with the
albumen solution above described the subsequent treatment being the same as that
already described for paper. For the production of uncolored photographs the process
is similar to that above described omitting the colors.
The colors I employ are ordinary mineral or water colors ground up with phenic
acid and silicate. of soda or potash in alcohol. In the above manipulation care must
be taken to exclude all organic matter other than that as above described.
Dated this 5th day of April 1887.
BROWNE & Co.,
Agents for the Applicant.

page_text: VUMI INI DITUIFICATION.
Improvements in the Production of Photographic Impressions.
I, JOHN JABEZ EDWIN MAYALL of Southwick in the County of Sussex, Photo-
graphic Artist do hereby declare my said 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 for its object the production of permanent photographic
impressions whether colored or uncolored on any suitable material. According to
this invention I first take a negative preferably by Electric Light but it may also be
taken by sun light in the ordinary way, I then print a positive on paper, porcelain or
other suitable material prepared as follows:-
For paper I soak it in a weak solution of gelatine and lactate of iron in about the
following proportions viz -2 grains of fish glue or isinglass to one sixteenth of a
grain of lactate of iron in one ounce of water the whole being boiled and subsequently
filtered. The paper after having been immersed for about three minutes in the above
solution is dried and smoothed this may be done by placing it between blotting paper
and submitting it to a slight pressure I next float the paper thus prepared for about
two minutes on a bath composed as follows:-viz. to about one ounce of albumen
(preferably that taken from fresh eggs) four grains of chloride of sodium, half a grain
of bromide of potassium, two minims of glacial acetic acid and one drop of a con-
centrated solution of some derivative of silex or of hydrocarbon of which I have
found salicylic acid prepared according to my invention and for which I intend to
apply for letters patent to be very suitable the whole must be beaten up into a frothy
mass and allowed to settle for about 12 hours. Any tints may be given to this mass
by adding the desired color solved in a saturated alcoholic solution in the proportions
of about one minim of alcoholic solution to about four ounces of the albumen solution
above described and one minim of meconin or its derivatives the whole is then beaten
up and allowed to settle.
After floating the paper it is then dried by slow heat and ironed on the back to
make it perfectly dry and smooth. I then prepare a bath of nitrate of silver and
nitrate of soda and free ammonia in the proportions of about one ounce of water to
40 grains of nitrate of silver 10 grains of nitrate of soda and three minims of free
ammonia and when pliability of the paper is desirable I add to the bath 5 drops of
glycerine per ounce of bath solution.
The paper is then floated face downwards on this bath for about two minutes and
then dried in a dark room after which it is, fumigated in an atmosphere of ammonia
for from three to five minutes and is then ready for printing upon in the ordinary
way. The prints after fixing must be soaked in a weak solution of sulphuric acid to
expel any trace of the hypo-sulphite of soda and well washed. The printed impression
in a moist state is then mounted face uppermost on a piece of glass or skeleton frame
and when dried, the desired colors prepared as hereafter described are then dabbed on
by suitable means and slightly stumped. The dabber which 1 find suitable for this
purpose is a pad of fine cotton wool pushed through a glass tube so as to protrude

page_text: therefrom and cut square and even at the end. This cotton wool must either be
renewed for each color or a separate dabber made as above kept for each color.
After the colors have been applied the paper is rendered impervious to moisture by
having applied to its back and front some such substance as white wax or paraffin or
camphor the print being sufficiently warmed for the purpose of the application of the
wax. The colors must be stronger than are required for the final effect.
The picture is then sprayed over or subjected to an atmosphere charged with a weak
alcoholic solution of salicylic acid or some derivative of silex or hydrocarbon.
Paraffin or of any preparation of fluorine solved in alcohol to set the color and then
it is subjected to the action of finely powdered soluble glass this I propose to effect
as follows:-viz. by placing a powdered silicon in a suitably closed chamber provided
with shelves and fitted with bellows so as to blow the silicon powder into a cloud,
the colored picture is then put on one of the shelves to catch the fine dust of the
silicon for a very few seconds after which it is taken out of the chamber. The picture
(face downwards) is then laid on a plate of glass coated in the following manner.
After having rubbed the glass with a dabber of any suitable material (for which I use
à ball of cotton wool covered with leather) charged with powdered silicon I coat it
with collodion to which is added one drop per ounce of salicylic acid and when dry
I recoat it with gelatine and salicylic acid in about the proportions of one drop of
acid to one ounce of gelatine and again dry the plate. The surface of the print must
now be moistened with some hydrocarbon such as paraffin or kerosene in solution to
which is added a few drops of salicylic acid in the proportions of about two drops of
salicylic acid to the ounce of hydrocarbon and when sufficiently moist the picture is
well pressed down upon the gelatine surface and allowed to dry in a warm atmosphere
after which it is stripped from the glass and when mounted on card porcelain or other
desired material produces a permanent and finely colored photographic picture.
If it is desired to have a brilliant picture it is necessary that the entire process
above described should be conducted without any delay or intermission. in the various
portions of the process and in an atmosphere of increasing temperature as if in the
process the print is allowed to become chilled a dull appearance is the result, which
dull appearance may however be sometimes preferred.
For printing on porcelain and such like material I coat the material with colodio
chloride of. silver or carbon tissue or the albumen solution above, described the
subsequent treatment being the same as that already described for paper.
For the production of uncolored photographs the process is similar to that above
described omitting the colors.
The colors I employ are ordinary colors in a dry state ground up with phenic acid
and silicate of potash or kerosene and silicate of potash in alcohol in about the
following proportions viz. one ounce of dry color to 60 grains of phenic acid and
20 minims of silicate of potash or 60 grains of kerosene to 20 minims of silicate of
potash. In the above manipulation care must be take to exclude all organic matters
other than what are above described.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is :-
The production of photographic impressions whether colored or not substantially as
set forth.