IMPROVEMENTS IN THE TREATMENT OF FOUSEL OIL FOR IMPROVING THE QUALITY THEREOF
Year: 1882

page_text: LETTERS PATENT to John Kingsford Field of Lancaster Tower Battersea Park
in the County of Surrey for an invention of "IMPROVEMENTS IN THE
TREATMENT OF FOUSEL OIL FOR IMPROVING THE QUALITY THEREOF The
result partly of a communication made to him from abroad by Heinrich
Ujhely of Vienna, Austria, and partly of an invention made by himself
.
PROVISIONAL SPECIFICATION left by the said John Kingsford Field at
the Office of the Commissioners of Patents on the 26th May 1882.
"
JOHN KINGSFORD FIELD of Lancaster Tower Battersea Park in the County of
Surrey "IMPROVEMENTS IN THE TREATMENT OF FOUSEL OIL FOR IMPROVING THE
QUALITY THEREOF. [The result partly of a communication made to him from
abroad by Heinrich Ujhely of Vienna, Austria, and partly of an invention made
by himself]
This invention has for its object both to free fousel oil more or less entirely from
offensive odour and to remove the watery constituents therefrom.
For these purposes the fousel oil is first distilled in the usual way and about
ninety per. cent. of the liquid which passes over is collected separately. This
product is then mixed with petroleum spirit (which must always be of a boiling
point several degrees under that of the fousel) in proportions varying according to
the boiling point of the fousel oil. In practice I find that proportions varying
from seven parts of fousel oil and four parts of petroleum spirit, to equal parts of
each, give a good result, but I do not bind myself to these proportions.
The mixture is then well agitated and to assist the operation it may be gently
heated by steam in a closed vessel. On its being allowed to stand for a short
time, the water present in the fousel oil is deposited and is then drawn off. The
remaining mixture of fousel and petroleum is then distilled in any suitable known
manner, so as to first evaporate the petroleum, and that portion of the fousel oil
which passes over at a temperature slightly above the boiling point of the
petroleum is separately collected, whereupon it will be found that the remaining
portion of the fousel oil is of a comparatively odourless nature. Should the fousel
oil so obtained still contain some water or smell it may be again mixed with
petroleum and treated as above described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Kingsford Field in the Great Seal Patent Office on the
22nd November 1882.
ກາ
JOHN KINGSFORD FIELD of Lancaster Tower Battersea Park in the County of
Surrey "IMPROVEMENTS IN THE TREATMENT OF FOUSEL OIL FOR IMPROVING
THE QUALITY THEREOF The result partly of a communication made to me from
Abroad by Heinrich Ujhely of Vienna, Austria, and partly of an invention made
by myself.
This invention has for its object both to free fousel oil more or less entirely from
offensive odour and to remove the watery constituents therefrom.
For these purposes the fousel oil is first distilled in the usual way and about
ninety per cent of the liquid which passes over is collected separately. This
product is then mixed with petroleum spirit (which must always be of a boiling
point several degrees under that of the fousel) in proportions varying according to
the boiling point of the fousel oil. In practice find that proportions varying
from seven parts of fousel oil and four parts of petroleum spirit, to equal parts of
each, give a good result, but I do not bind myself to these proportions.
The mixture is then well agitated and to assist the operation it may be gently
heated by steam in a closed vessel. On its being allowed to stand for a short time,
The
the water present in the fousel oil is deposited and is then drawn off.
remaining mixture of fousel and petroleum is then distilled in any suitable known
manner, so as to first evaporate the petroleum, and that portion of the fousel oil
which passes over at a temperature slightly above the boiling point of the petroleum
is separately collected, whereupon it will be found that the remaining portion of
Should the fousel oil 80
the fousel oil is of a comparatively odourless nature.
obtained still contain some water or smell it may be again mixed with petroleum
and treated as above described.
The chemical process which is carried out by the above described treatment of
fousel oil may be stated to be as follows:-
Fousel oil is generally composed of Amyl alcohol, Butyl alcohol and Propyl
Alcohol, together with water, and the object of the above treatment is to obtain
the pure Amyl Alcohol, separated from the other two alcohols and the water. By
the addition to the fousel oil of distilled petroleum spirit, (the boiling point of
which should not be much over 212° Fah) the Amyl Alcohol becomes completely
dissolved therein, and the water which accompanied it, together with the Butyl
and Propyl alcohols, become separated therefrom, and can be drawn off, after which
the Petroleum spirit is separated from the Amyl Alcohol by fractional distillation,
as described.
Having thus described the nature of the said invention and in what manner the
same is to be performed, I claim :—
The method of defecating fousel oil and separating watery constituents therefrom
by admixture therewith of petroleum spirit, and after separation from the water
and other impurities by decantation, subjecting the mixture of fousel oil and
petroleum spirit to fractional distillation substantially as herein described.
In Witness whereof I the said John Kingsford Field have hereunto set my
hand and seal this eighteenth day of November in the year of our Lord
One thousand eight hundred and eighty two.