Year: 1896

page_text: 'Date of Application, 15th Aug., 1895-Accepted, 27th Mar., 1897

page_text: hydrochlorate of cocaine. We expose this flask of cocaine to the light
during 4 or 5 minutes and fill it afterwards with water.
We put this flask during 24 hours in the shade.
After these three operations are made and the 24 hours have passed we take the
first vessel in which is the dissolved blood albumen and we add thereto 5 grammes
of sulphate of soda, 1 gramme of oxalic acid, and 25 centigrammes of corrosive
sublimate which are mixed together.
When this mixture is made we put about 100 grammes of it into another
vessel and we crush a fresh egg therein adding a pinch of hemoglobine.
When this egg is well whipped in these 100 grammes of albumen and the
hemoglobine it is added to the 200 grammes of albumen, that is to say it
is poured again into the vessel where we bad dissolved 200 grammes of blood
albumen in 500 grammes of water. The whole is then well mixed.
After this the flask of cocaine is poured therein and the whole is well mixed
together.
Then we take the vessel in which we have dissolved the chlorides and putting
before us another vessel large enough for containing the liquids and mixtures of
the two first vessels, we take one of these two vessels in one hand and the other
in the other hand and pour the whole at the same time letting each liquid fall
slowly into the large vessel and from a height of 15 to 20 centimeters.
In proportion as the two liquids are poured into the large vessel their mixture
swells and when the operation is finished this mixture presents a volume nearly
equal to that of 2000 grammes water.
We let this mixture repose during 24 hours in the shade.
The albumen for shadows is now made.
2. Albumen for reliefs.-24 hours after the albumen for shadows is made, we
take the half of this albumen in an open vessel and add 1 gramme pioric acid,
1 gramme chromic acid, 10 centigrammes of formic acid..
We take another vessel into which we pour 125 grammes of distilled water and
we dissolve in this water 5 grammes sodium chloride, 1 gramme platinum chloride
and add 50 grammes of fresh caseine and we mix to saturation.
When this mixture is made we pour it into the vessel which contains the part of
the albumen of the shadows into which we have put the picric, chromic, and formic
acids. We thoroughly mix the whole and let' it repose 24 hours.
The albumen for the relief is then ready.
3. Blue pigment.-We take 10 centilitres of the shadows albumen which is
poured into 1000 grammes of distilled water in which has been melted 1 gramme
sodium chloride.
We take 100 grammes of this solution and add 5 grammes of carmine of
indigo, 5 grammes of oxalic acid.
This is dissolved and into this solution are poured the 900 grammes remaining
of the 1000 grammes water into which there had been put 10 grammes of the
shadows albumen and 1 gramme of sodium chloride.
The whole is mixed and agitated 'several times during three or four hours. It
is then left quiet for 24 hours.
The blue pigment is then ready.
4. Green pigment.- centilitres of the shadows albumen and 5 centimeters of
the relief albumen are poured into 1000 grammes of distilled water in which
has been dissolved 1 gramme of sodium chloride.
50 grammes of this solution are poured into one flask and 50 grammes of the
same solution into another flask.
In the 50 grammes solution of one of these flasks is dissolved: 1 gramme of nickel
chloride, 1 gramme of chrome chloride, 1 gramine of copper chloride, 1 gramme of
sulphate of copper, 1 gramme of nitrate of copper.
In the other flask containing the other 30 grammes solution are dissolved:
1 gramme picric acid, 1 gramme carmine of indigo.
When. this. solution is made the contents of the two flasks of 50 grammes is mixed

page_text: All the liquids which we have now made cannot be used before about 8 days
and they produce a sufficiently appreciable result only when they are several (3 to 4)
months old.
But after the eighth day they can be used tried and judged.
For this purpose 10 centilitres of the shadows albumen are put in 1000 grammes
of distilled water with 1 gramme of sodium chloride and 10 grammes of the reliefs
albumen in 1000 other gramines of distilled water saturated with 1 gramme of
sodium chloride which makes about 1 litre of product in each vessel.
We take a photograph that has been taken on nitrate of silver paper, the
photograph is wetted with the shadows albumen, this photograph thus wetted is
extended upon a plate glass or upon a marble table face downwards then the
reverse of the picture is wetted with the same liquid, the shadows albumen :
2 or 3 minutes are allowed to elapse and this reverse is again wetted with the
reliefs albumen.
The photograph is turned and extended face upwards upon the glass or the
marble.
Then one takes with a badger hair brush blue pigment that is to say prepared
according to the formula before described and washes the whole photograph.
Then wait 2 or 3 minutes. If the parts of the picture which are to be made
blue are not blue enough or have not the exact tint of the blues desired, one passes
blue pigment again over these parts until it is sufficient.
Three or four washings are generally sufficient.
The application of the blue pigment gives the whites, the greys and all the blues
according to the treatment adopted and regulated by practice according to the
judgement of the operator and the tones he wishes to produce. When the blues
are obtained and without minding the wet state of the photograph, the latter is
washed with a badger hair brush wetted with the shadows albumen prepared for
this operation.

page_text: When this washing is done, and without waiting until the picture is dried, one
passes over the whole picture a badger hair brush wetted in the green pigment
diluted with ten times its volume of the shadows albumen and the liefs albumen
such as prepared for the operation.
The parts of the picture where the greens are not enough accentuated are again
treated with the green pigment as many times as desired, until the tones desired
such as yellowish green, medium green or dark green are obtained.
Three or four times are usually sufficient.
The green pigment gives all the yellow and green colours.
When the greens are obtained and without minding the wet state of the
photograph, the whole picture is washed with the reliefs albumen prepared for this
operation.
When this washing is done the whole picture is washed with a badger hair brush
placed in the red pigment diluted with the reliefs albumen, and the parts of the
photograph which are wanted to be more or less red, are correspondingly treated
and accentuated.
Two or three coatings are sufficient to give the red wanted.
The red pigment gives tones between flesh and black red colour.
The photograph thus ready wants only to be washed with the shadows albumen
and allowed to dry.
It is inalterable in the air, the sun, the damp etc.
It can be washed with alcohol of 90° without injuring it.
The process is the same for photographs on other materials than paper but it is
obvious that when the support is impervious it is useless to apply any of the liquids
to the back of the support.
Having now particularly described and ascertained the nature of this said inven
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The albumen for shadows and for reliefs, and their application to photographs
made upon any support, paper, glass, fabric, porcelain, stoneware, earthware, wood,
substance or material etc.
2. The composition of the blue, green, and red pigments, as described herebefore.
All substantially as described and for the purpose set forth.
Dated this 15th day of August 1896.
HERBERT HADDAN & CO.,
18 Buckingham Street, Strand, London, W.C., Agents for Applicants.