IMPROVE- MENTS RELATING TO THE MANUFACTURE OR REFINING OF SUGAR
Year: 1863

page_text: LETTERS PATENT to George John Doddrell, of Glasgow, in the County
of Lanark, North Britain, Sugar Refiner, for the Invention of "IMPROVE-
MENTS RELATING TO THE MANUFACTURE OR REFINING OF SUGAR:
Sealed the 27th May 1864, and dated the 1st December 1863.
PROVISIONAL SPECIFICATION left by the said George John Doddrell
at the Office of the Commissioners of Patents, with his Petition, on the
1st December 1863.
I, GEORGE JOHN DODDRELL, of Glasgow, in the County of Lanark, North
Britain, Sugar Refiner, do hereby declare the nature of the said Invention of
"IMPROVEMENTS RELATING TO THE MANUFACTURE OR REFINING OF SUGAR," to be as
follows; that is to say:-
This Invention has for object to save labour and expense by modifying the
general arrangements of works for the manufacture or refining of sugar.
And in carrying out the Invention, instead of boiling or concentrating the
sugar and filling it into forms or vessels in the lower floors of the refinery,
such forms or vessels having to be subsequently elevated at considerable
expense, the liquor or sugar solution is boiled or concentrated in vacuum of

page_text: other pans or vessels placed in the uppermost floor of the refinery, or in any
convenient floor above that in which the goods are worked off or finished, in
order that the concentrated fluid or semi-fluid may be transferred from the
concentrating pans or vessels by gravitation by means of pipes or ducts or
partly by pipes and partly by basins or filling vessels to be filled out into the
forms or vessels on the same floor as that on which the goods are worked off
or finished. When granulating vessels and centrifugal drying or draining
machines are used, the fluid or semi-fluid is transferred from the elevated
concentrating pans to the granulating vessels, and is thence passed by gravita-
tion directly through pipes or ducts to the centrifugal machines placed at a
lower level.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George John Doddrell in the Great Seal Patent Office on
the 1st June 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
JOHN DODDRELL, of Glasgow, in the County of Lanark, North Britain, Sugar
Refiner, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the First day of December, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said George John Doddrell, Her special licence that I, the said George
John Doddrell, my executors, administrators, and assigns, or such others as
I, the said George John Doddrell, 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 "IM-
PROVEMENTS RELATING TO THE MANUFACTURE OR REFINING OF SUGAR," upon the
condition (amongst others) that I, the said George John Doddrell, my execu-
tors 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 per-
förmed, and cause the same to be filed in the Great Seal Patent Office within

page_text: six calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said George John Doddrell, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement in writing, that is to say :-
My said Invention has for object to save labor and expence by modifying
the general arrangements of works for the manufacture or refining of sugar.
And in carrying out my said Invention, instead of boiling or concentrating the
sugar and filling it into forms or vessels in the lower floors of the refinery,
such forms or vessels having to be subsequently elevated at considerable
expence, the liquor or sugar solution is boiled or concentrated in vacuum or
other pans or vessels placed in the uppermost floor of the refinery, or in any
convenient floor above that in which the goods are worked off or finished, in
order that the concentrated fluid or semi-fluid may be transferred from the
concentrating pans or vessels by gravitation by means of pipes or ducts or
partly pipes and partly by means of basins or filling vessels to be filled
out into the forms or vessels on the same floor or floors as that or those on
which the goods are worked off or finished. If the filters through which the
liquor passes before its introduction into the vacuum pans are arranged in
the usual way, so that the filtered liquor is delivered from them at a com-
paratively low level, this filtered liquor is pumped up through suitable piping
to the elevated level at which the vacuum pans are placed according to
this Invention. It will, however, be obvious that the arrangements pre-
liminary to the boiling or concentrating in the vacuum pans may be variously
modified. When granulating vessels and centrifugal drying or draining
machines are used, the fluid or semi-fluid is transferred from the elevated
concentrating vacuum pans to the granulating vessels or receivers, and is
thence passed by gravitation directly through pipes or ducts to the centri-
fugal machines placed at a lower level. I do not, however, claim the passing
of the concentrated fluid or semi-fluid into granulating vessels or receivers and
thence into centrifugal machines by gravitation when the concentrating
vacuum pans are situated at the ordinary low level.
Having thus particularly described my said Invention, and the manner in
which the same is or may be performed, I have to state that what I believe
to be novel and original, and claim as the Invention secured to me by the
herein-before in part recited Letters Patent, is, the disposing of the concen-
trating vacuum pans of a sugar refinery at a higher level than that which the

page_text: goods are worked off or finished, for the purposes and in the manner herein-
before described.
In witness whereof, I, the said George John Doddrell, have hereunto
set my hand and seal, this First day of June, in the year of our
Lord One thousand eight hundred and sixty-four.
Witness,
EDMUND HUNT, Patent Agent,
28, St. Enoch Square, Glasgow.
G. J. DODDRELL. (L.S.)