AN IMPROVED MODE OR METHOD OF BLEACHING PALM OIL."
Year: 1861

page_text: LETTERS PATENT to Charles Watt, of Graham Street, Walworth, Surrey,
Chemist, John Watt, of Lorrimore Street, Walworth, Chemist, and
Thomas Snaith Haviside, of Cornhill, in the City of London, Gentleman,
for the Invention of "AN IMPROVED MODE OR METHOD OF BLEACHING
PALM OIL."
PROVISIONAL SPECIFICATION left by the said Charles Watt, John
Watt, and Thomas Snaith Haviside at the Office of the Commissioners
of Patents, with their Petition, on the 24th September 1861.
We, CHARLES WATT, of Graham Street, Walworth, Surrey, Chemist, JOHN
WATT, of Lorrimore Street, Walworth, Chemist, and THOMAS SNAITH HAVISIDE,
of Cornhill, in the City of London, Gentleman, do hereby declare the nature
of the said Invention for "AN IMPROVED MODE OR METHOD OF BLEACHING PALM
OIL," to be as follows:-
This Invention relates to an improved mode or method of bleaching palm
oil. To effect this object an iron or other suitable vessel is used, and therein
is put palm oil and an aqueous solution of either sulphate of zinc, or chloride
of zinc, or sulphate of copper, sulphate of iron, chloride of iron, chloride of
calcium, or chloride of sodium, and the whole contents of the vessel boiled
until, on cooling, the oil becomes of a pale straw color; until this result has
been attained the boiling should be continued, and water, if found necessary,
supplied to the vessel from time to time during the process, in order to make
be

page_text: good any deficiency occasioned by evaporation. Care must be taken not to
heat the contents of the vessel so as char the oil. When the oil is found to
be of a pale straw color on cooling, it should be run off for use.
SPECIFICATION in pursuance of the conditions of the Letters. Patent, filed
by the said Charles Watt, John Watt, and Thomas Snaith Haviside in
the Great Seal Patent Office on the 22nd March 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, CHARLES
WATT, of Graham Street, Walworth, Surrey, Chemist, JOHN WATT, of Lorri-
more Street, Walworth, Chemist, and THOMAS SNAITH HAVISIDE, of Cornhill,
in the City of London, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of September, in the year of our
Lord One thousand eight hundred and sixty-one, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
us, the said Charles Watt, John Watt, and Thomas Snaith Haviside, Her
special licence that we, the said Charles Watt, John Watt, and Thomas
Snaith Haviside, our executors, administrators, and assigns, or such others
as we, the said Charles Watt, John Watt, and Thomas Snaith Haviside, our
executors, administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "AN IMPROVED MODE OR METHOD
OF BLEACHING PALM OIL," upon the condition (amongst others) that we, the
said Charles Watt, John Watt, and Thomas Snaith Haviside, our executors
or administrators, by an instrument in writing under our, or one of our, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the sald Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said Charles Watt, on behalf of myself
and the said John Watt and Thomas Snaith Haviside, do hereby declare the
nature of our said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say:-

page_text: This Invention relates to an improved mode or method of bleaching palm
oil, and consists in boiling palm oil in an aqueous solution of either sulphate of
zinc, or chloride of zinc, or sulphate of copper, or sulphate of iron, or chloride
of iron or chloride of calcium, or chloride of sodium.
And in order that the said Invention may be most fully understood and
readily carried into effect, we will proceed to describe the method in which we
prefer to proceed.
An iron or other suitable vessel is used, and therein is put palm oil and an
aqueous solution of either sulphate of zinc, or chloride of zinc, or sulphate of
copper, or sulphate of iron, or chloride of iron, or chloride of calcium, or
chloride of sodium, and the whole contents of the vessel are then to be boiled
until, on cooling, the oil becomes of a pale straw color. Until this result has
been attained the boiling should be continued, and water, if found necessary,
be supplied to the vessel from time to time during the process, in order to
make good any deficiency occasioned by evaporation. The heat required for
effecting the object may be applied in any convenient manner; however, care
must be taken not to heat the contents of the vessel so as to char the oil.
When the oil is found to be of a pale straw color on cooling, it should be run
off for use.
In witness whereof, I, the said Charles Watt, on behalf of myself and
the said John Watt and Thomas Snaith Haviside, have hereunto set my
band and seal, this Twenty-second day of March, One thousand eight
hundred and sixty-two.
CHARLES WATT. (L.S.)