A NEW OR IMPROVED PROCESS FOR REFINING OILS."
Year: 1883

page_text: LETTERS PATENT to John Imray of N° 28 Southampton Buildings, Chancery
Lane in the County of Middlesex for an Invention of "A NEW OR IMPROVED
PROCESS FOR REFINING OILS." Communicated to mo from abroad by Ivar
Axel Ferdinand Bang and Charles Albert Sanguinetti both of Paris, France.
PROVISIONAL SPECIFICATION left by the said John Imray at the Office
of the Commissioners of Patents on the 27th July 1883.
"
JOHN IMRAY of N° 28 Southampton Buildings, Chancery Lane in the County
of Middlesex "A NEW OR IMPROVED PROCESS FOR REFINING OILS [communi-
cated to ine from abroad by Ivar Axel Ferdinand Bang and Charles Albert
Sanguinetti both of Paris, France]
The means usually adopted for refining vegetable oils, whether by application of
oxidants, or of animal charcoal or alkalies, are objectionable because they
seriously affect the flavour of the oil and in many cases involve considerable waste
by partial saponification. This invention relates to a process of refining these oils
without involving sensible waste and without affecting their flavour.
For this purpose the oil is treated with alkaline earths, lime, magnesia, baryta
or strontia in the condition of monohydrate and in minute subdivision, the
quantity applied varying from 1/10th per cent to 2 per cent according as the oil has
less or more colour or impurity to be removed. The monohydrated alkaline carth
is intimately mixed with a small quantity of the oil, and the mixture is then
poured into the bulk and kept mixed with it by agitation. When the oil bas
little colour, the treatment need extend only over several hours. For oils more
highly coloured, such as cotton oil, the treatment should extend over several days.
The mixture is then passed through a filter press from which the oil flows pure
and clear, the colouring matters being retained in the press along with the alkaline
matter but with scarcely a trace of the oil.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Imray in the Patent Office on the 25th January 1884.
JOHN IMRAY of N° 28 Southampton Buildings, Chancery Lane in the County
of Middlesex "A NEW OR IMPROVED PROCESS FOR REFINING OILS" A communi-
cation to me from abroad by Ivar Axel Ferdinand Bang and Charles Albert
Sanguinetti both of Paris, France.
The means usually adopted for refining vegetable oils, whether by application
of oxidants, or of animal charcoal or alkalies, are objectionable because they
seriously affect the flavour of the oil and in many cases involve considerable waste
by partial saponification. This invention relates to a process of refining theso
oils without involving sensible waste and without affecting their flavour.
For this purpose, the oil is treated with alkaline earths, lime, magnesia, baryta
or strontia, in the condition of monohydrate, and in minuto subdivision, the
quantity applied varying from 1/10th per cent to 2 per cent according as the oil has
less or more colour or impurity to be removed. The monohydrated alkaline earth,
in a state of impalpable powder (into which it is converted by absorption of the
moisture which renders it a hydrate) is intimately mixed with a small quantity of
the oil, and the mixture is then poured into the bulk and kept mixed with it by
agitation. When the oil has little colour, the treatment need extend only over
several hours. For oils more highly coloured, such as cotton oil, the treatment
should extend over several days. The mixture is then passed through a filter
press, from which the oil flows. pure. .and clear, the colouring matters being
retained in the press along with the alkaline matter, but with scarcely -a trace of
the oil.
Having thus described the nature of the said invention and in what manner
the same is to be performed, as communicated to me by my foreign correspondents,
I claim :-
Refining oils by mixing intimately with them monohydrate of limo or other
alkaline earth in fine powder without addition of water, and after reaction filter
pressing the mixture, substantially as herein described.
In Witness whereof I the said John Imray have hereunto set my hand and
seal this Twenty-fifth day of January in the year of our Lord One thousand
eight hundred and eighty-four.
TAHNY TIED AT