A NEW PROCESS FOR REFINING OZOKERIT
Year: 1879

page_text: LETTERS PATENT to Henry Ujhely, Manufacturer, of Vienna, in the Empire
of Austria, for the Invention of "A NEW PROCESS FOR REFINING OZOKERIT."
PROVISIONAL SPECIFICATION left by the said Henry Ujhely at the Office
of the Commissioners of Patents on the 27th January 1879.
HENRY UJHELY, Manufacturer, of Vienna, in the Empire of Austria.
PROCESS FOR REFINING OZOKERIT,"
<<
A. NEW
My Invention relates to a novel process for refining and bleaching ozokerite.
In carrying out my Invention I dissolve the ozokerite with or without the aid of
heat, either in crude petroleum or naptha, or in the products of distillation of the
said petroleum or naptha; or (2), in the products of distillation of coal tar or in other
similar liquids derived from the manufacture of carburretted hydrogen; or (3), in
sulphide of carbon. The solutions of ozokerite obtained with the aid of these
solvents are treated either, (a) with bone black or with the residue obtained in the
manufacture of ferro cyanite of potassium, or with a mixture of both in any suitable
proportions, by digestion and filtration; or (b), by conducting the solution of ozoke-
rite through filters containing bone black or the residue obtained in the manufacture
of ferro-cyanite of potassium, or any mixture of both.
From the filtered solution containing now the refined and bleached ozokerite the
solvent is recovered either by evaporation in vacuo or by distillation, and by pre-
ference by exposing the filtered solution to the action of cold, whereby the refined.
and bleached ozokerite is precipitated in a crystallized condition.

page_text: My said Invention relates to a novel process for refining or bleaching ozokerite.
In carrying out my Invention I dissolve the ozokerite with or without the aid of
heat, either,
First. In crude petroleum or naphtha or in products of distillation of the said
petroleum or naphtha, or,
Second. In the products of distillation of coal-tar, or in other similar liquids
derived from the manufacture of carburetted hydrogen (the boiling point of such
products or liquids ranging from 100° to 176° (Fahrenheit), or,
Third. In sulphide of carbon.
The dissolving process is carried on as long as the crude ozokerite contains any
ceresin or paraffin, viet, until it is completely exhausted.
The solutions of ozokerite obtained with the aid of these solvents are treated
either,―
F
...
17-
...
a. With bone black or with the residue obtained in the manufacture of ferro-
cyanite of potassium or with a mixture of the two in any suitable proportions by
digestion and filtration, or,
b. By conducting the solution of ozokerite through filters containing bone black
or the residue obtained in the manufacture of ferro-cyanite of potassium, or a mix-
ture of the two.
17
From the filtered solution containing now the refined or bleached ozokerite, the
solvent is recovered either by evaporation in vacuo or by distillation, and by pre-
ferance by exposing the filtered solution to a reduction of temperature, whereby the
refined or bleached ozokerite is precipitated so that its solvent may be decanted.
"1
110
It should be observed that the proportions to be used of the solvents, as also of
the substances with which the solution of ozokerite is subsequently treated are
variable and will depend upon the nature of and the impurities contained in the
crude ozokerite, the temperature at which the process is carried on and the kind of
solvent or substance used. It is impossible 'therefore to give any rules which will
be applicable in all cases, but the precise proportions to be employed will be readily
determined by chemists conversant with the nature and properties of the particular
substance or substances selected, an analysis having previously been made of a
sample of the erude ozokerite to be operated upon.
Having now described and particularly ascertained the nature of my said
Invention, 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,-
Effecting the refining of ozokerite by first dissolving it, with or without the aid
of heat, in one of the solvents hereinbefore referred to, then treating the solution
thus obtained substantially in the manner herein set forth, and finally precipitating
the bleached ozokerite from its solvents by reduction of temperature or by evapora-
tion, or by distillation, all substantially as hereinbefore described.
In witness whereof, I, the said Henry Ujhely, have to this my Specification
set my hand and seal, this Sixteenth day of July, One thousand eight
hundred and seventy nine.
HENRY UJHELY. (L.S.)