IMPROVEMENTS IN THE MANUFACTURE OF COLOURLESS AND ODOURLESS OIL FOR CHEMICAL AND PHARMACEUTICAL PURPOSES
Year: 1881

page_text: LETTERS PATENT to William Phillips Thompson, of the Agency for Foreign
Patent Solicitors, of 6, Lord Street, Liverpool, in the County of Lancaster,
and of 323, High Holborn, in the County of Middlesex, Civil Engineer,
for an Invention of "IMPROVEMENTS IN THE MANUFACTURE OF COLOURLESS
AND ODOURLESS OIL FOR CHEMICAL AND PHARMACEUTICAL PURPOSES."
A communication from abroad by Iank Gottlieb, of Vienna, in the Empire of
Austria
PROVISIONAL SPECIFICATION left by the said William Phillips Thompson
at the Office of the Commissioners of Patents on the 16th August 1881.
WILLIAM PHILLIPS THOMPSON, of the Agency for Foreign Patent Solicitors,
of 6, Lord Street, Liverpool, in the County of Lancaster, and of 323, High
Holborn, in the County of Middlesex, Civil Engineer. "IMPROVEMENTS IN THE
MANUFACTURE OF COLOURLESS AND ODOURLESS OIL FOR CHEMICAL AND
PHARMACEUTICAL PURPOSES." A communication from abroad by Isak Gottlieb,
of Vienna, in the Empire of Austria.
The object of this Invention is a superior colourless and odourless oil for cosmetic
and pharmaceutical purposes, and for the method or process of manufacture. Any
ordinary mineral oil of a specific gravity of 0.85 to 0.95 will form the raw
material. This oil is repeatedly digested with fuming sulphuric acid varying in
quantity from 10 per cent. to forty per cent. of the weight of the oil being left to
settle each time after being so treated. The oil is then ladled off from the
sedimentary matter, the skimming being carefully conducted so as only to take up
the oil. This process is repeated till all vegetable matter or matters charred by the
oil of vitriol is removed. The oil purified in this way is digested in the warm
state with the powder which forms a residuum or waste product in the manufacture
of ferrocyanide of potassium.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Phillips Thompson in the Great Seal Patent Office
on the 15th February 1882.
WILLIAM PHILLIPS THOMPSON, of the Agency for Foreign Patent Solicitors,
of 6, Lord Street, Liverpool, in the County of Lancaster, and of 323, High
Holborn, in the County of Middlesex, Civil Engineer. "IMPROVEMENTS IN THE
MANUFACTURE OF COLOURLESS AND ODOURLESS OIL FOR CHEMICAL AND
PHARMACEUTICAL PURPOSES." A communication from abroad by Isak Gottlieb,
of Vienna, in the Empire of Austria.
The object of this Invention is a new colourless and inodorous mineral oil for
cosmetic and pharmaceutic purposes, and the method or process used for its
production.
Any of the mineral oils of a specific gravity of from 0·85 up to 0.95 may be
employed for the production of the said colourless and inodorous mineral oil
The raw mineral oil of the above density is repeatedly digested with oil of
vitriol in the proportion of from 10 up to 40 parts by weight of vitriol oil to
100 parts by weight of mineral oil.
The mineral oil should after each digestion be allowed to settle, and is then
skimmed off or decanted from the dark sediment.
This process is repeated so many times until all vegetable matter contained in
the mineral oil is turned to carbon, to which purpose 50-90 per cent. of oil of vitriol
(rauchende Schwefelsäure) will be necessary.
The oil after being purified in the said manner is treated while in a hot state
with the powder forming the residue in the production of yellow prussiate of
potash.
Having now described this Invention as communicated to me, I wish it to be
understood that what I wish to protect and desire to claim under the hereinbefore
in part recited Letters Patent is,-
The application of oil of vitriol in combination with the residue formed in the
production of yellow prussiate of potash for decolorizing and deodorizing of heavy
mineral oils.
In witness whereof I the aoid William Dhilling Thamnson have homunto and