Improvements in the Steam Treatment of Oils and Fats for Purifying or Distilling Purposes.
Year: 1892

page_text: Date of Application, 22nd Sept., 1892
Complete Specification Left, 22nd June, 1893-Accepted, 16th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Steam Treatment of Oils and Fats for
Purifying or Distilling Purposes.
I, ADOLPHUS GRAY PETTY, of No. 33, Clapton Common, in the County of
Middlesex, Oil Manufacturer, do hereby declare the nature of this invention to be
as follows:-
When steam is applied to oils and fats for the purpose of carrying off from them
substances of objectionable odour or flavour, or for the purpose of distilling from
them essences, the heat often causes chemical action which deteriorates the quality of
the substances operated on. My invention relates to a method of applying steam
for the treatment of oils and fats in such a manner that the usual objects of steam
treatment are attained without deterioration of the material treated. For this
purpose, I employ steam of low pressure and at low temperature, acting in a
vacuum as nearly perfect as is practicable. The steam may be passed through a
body of the oil or molten fat, or the oil or molten fat may be passed in a shower or
other diffused form through a body of the steam. The vapours carried off with
the steam may be condensed in any known manner and collected. Also the steam
and vapour discharged from one vessel where the treatment has been carried on
may be led through material in other vessels, thus utilising their heat.
Dated this 22nd day of September 1892.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Steam Treatment of Oils and Fats for
Purifying or Distilling Purposes.
I, ADOLPHUS GRAY PETTY, of No. 33, Clapton Common, in the County of
Middlesex, Oil Manufacturer, do hereby declare the nature of this invention and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :—
When steam is applied to oils and fats for the purpose of carrying off or
distilling from them some of their constituents which are of objectionable odour or
flavour, the heat often causes chemical action which deteriorates the quality of the
substances operated on. My invention relates to a method of applying steam for
the treatment of oils and fats in such a manner that the usual objects of steam
treatment are attained without deterioration of the material treated. For this
purpose, I employ steam of low pressure and at low temperature, acting in a
vacuum as nearly perfect as is practicable. The steam may be passed through a
body of the oil or molten fat, or the oil or molten fat may be passed in a shower
or other diffused form through a body of the steam. The vapours carried off with
the steam may be condensed in any known manner and collected. Also the steam
and vapour discharged from one vessel where the treatment has been carried on
may be led through material in other vessels, thus utilising their heat.
The temperature of the steam employed necessarily varies with the various
materials treated. For cotton seed oil 1 prefer that the temperature should not
exceed 110° F. For butter or other animal fats or tallow the temperature
should preferably not exceed 130° F. For castor oil, cocoa nut oil or like oils,
I find that no serious deterioration results from the use of temperatures as high as
212° F., but I prefer to operate at lower temperatures.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is: -
The herein described method of treating oils and fats for purifying and distilling
purposes, by subjecting them to the action under vacuum of steam at low pressures
and temperatures.
Dated thin plat do of T... 1000
ABEL & IMRAY,
Agents for the Applicant.