Year: 1887

page_text: Date of Application, 5th Mar., 1887
Complete Left, 23rd Nov., 1887
Complete Accepted, 23rd Dec., 1887
1, ARTHUR SMITя, of No. 90 Wickham Road, Brockley in the County of Kent,
Analytical Chemist, do hereby declare the nature of this invention to be as follows:-
My invention relates to a process for de-odorising cocoa nut oil. For this purpose,
I mix with the melted oil an alkaline sulphide, such as that of Sodium, Potassium,
Calcium, Ammonium and the like, agitating the mixture either mechanically or by
blowing steam through it. I then wash repeatedly with water while the mixture is
kept liquid and, afterwards, I wash with a solution of an alkaline bisulphite, such as
bisulphite of soda, and finally with water. The sulphides which I employ in the first
part of the process are preferably those produced by passing sulphuretted hydrogen
through a caustic alkali or alkaline earth in solution or suspension.
Tim žih dose of Manah 1887
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, ARTHUR SMITH of No. 90 Wickham Road, Brockley in the County of Kent
Analytical Chemist 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 :-
:-
My invention relates to a process for deodorising cocoa nut oil. For this purpose'
1, in the first instance, mix with the crude oil an aqueous solution of an alkaline
sulphide in the proportion of from 3 to 5 lbs. of the sulphide to a hundred weight of
the oil, the solution employed being such as to have a specific gravity of about 1,050.
The sulphide may be that of sodium potassium or ammonium, or it may be any of
those, sometimes called hydrosulphurets which are produced by passing sulphuretted
hydrogen through solutions of the caustic alkalies or through alkaline earths dissolved
or suspended in water I boil the mixture of the oil and sulphide solution, under
agitation, for about an hour. This may be done by passing steam through the mixture,
or it may be done in a steam jacketted vessel, the agitation being effected either by
stirring or by blowing air through the material. After boiling, the material is allowed
to settle and the clear fat is run off and washed with water and steam. After drawing
off the wash water, the material is boiled for about an hour with a solution of a
bisulphite, by preference bisulphite of soda, using about 2 lbs. dissolved in a gallon of
water. After boiling and settling, the product is finally washed with water and
steam, and then it will be found to be entirely deprived of smell and taste. The pro-
portions of the agents may be varied according to the quality of the material treated,
thus oil of a rancid character will require to be treated with a stronger solution of
sulphide than that of a more fresh quality.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed I declare that what I claim is :-
The herein described process for deodorising cocoa nut oil by boiling with a
sulphide, washing, boiling again with a bisulphite, and washing.
Dated this 23rd day of November 1887
ABEL & IMRAY,
Agents for the Applicant.