IMPROVE- MENTS IN THE USE OF ANIMAL CHARCOAL
Year: 1862

page_text: LETTERS PATENT to James Paterson, of the Middle Temple, in the
County of Middlesex, Barrister-at-Law, for the Invention of "IMPROVE-
MENTS IN THE USE OF ANIMAL CHARCOAL."A communication from, abroad
by George Alexander Drummond, résiding at Montreal, Canada East.
Sealed the 15th August 1862, and dated the 20th February 1862..
PROVISIONAL SPECIFICATION left by the said James Paterson at
the Office of the Commissioners of Patents, with his Petition, on
the 20th February 1862.
I, JAMES PATERSON, of the Middle Temple, in the County of Middlesex,
Barrister-at-Law, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE USE OF ANIMAL CHARCOAL," communicated to me from
abroad by George Alexander Drummond, a. person resident at Montreal,
Canada East, to be as follows:-
Animal charcoal is composed of particles of very different sizes, and according
to the method generally adopted in applying the same as a filtering inedium
for sugar and various other matters, such particles become very unequally
distributed, and imperfect filtration ensues.
The object of part of the improvements is to remedy this evil by the
application of means by which more effectually to insure equal distribution
of the different sized particles of the charcoal in the filtering vessels.
For this purpose the charcoal is fed on to revolving discs with projecting
surfaces adapted in their rotation to throw off and distribute such matter
equally in the filtering vessel. A fan or other suitable blowing or exhausting

page_text: means is also employed to blow or draw away the finer particles or dust as
it leaves the distributing means. Steam is also employed to act amongst the
various particles of charcoal in the filters to purify, and also to reduce or
equalize the temperature thereof. Cold air may also be employed in like
manner after such steam.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Paterson in the Great Seal Patent Office on the 20th
August 1862.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
PATERSON, of the Middle Temple, in the County of Middlesex, Barrister-at-
Law, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of February, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-fifth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Paterson, Her special licence that I, the said James
Paterson, my executors, administrators, and assigns, or such others as
I, the said James Paterson, my 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
"IMPROVEMENTS IN THE USE OF ANIMAL CHARCOAL," communicated to me from
abroad George Alexander Drummond, a person resident at Montreal;
Canada East, upon the condition (amongst others) that I, the said James
Paterson, my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said 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 James Paterson, do hereby declare the
nature of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement
thereof, that is to say :-
Animal charcoal is composed of particles of. very different sizes and according

page_text: to the method generally adopted in applying the same as a filtering medium
for sugar and various other matters, such particles become very unequally
distributed, and imperfect filtration as a consequence ensues.
The object of part of these improvements is to remedy this evil by the
application of means by which more effectually to ensure equal distribution
of the different sized particles of the charcoal in the filtering vessels.
For this purpose the charcoal is fed on to revolving discs with projecting
surfaces adapted in their rotation to throw off and distribute such matter
equally in the filtering vessel. A fan or other suitable blowing or exhausting
means is also employed to blow or draw away the finer particles or dust as
it leaves the distributing means. Steam is also employed to act amongst the
various particles of charcoal in the filters to purify, and also to reduce or
equalize the temperature thereof. Cold air may also be employed in like
manner after such steam.
In witness whereof, I, the said James Paterson, have hereunto set my
hand and seal, this Thirteenth day of August, in the year of our Lord,
One thousand eight hundred and sixty-two.
JAMES PATERSON. (L.S.)