AN IMPROVEMENT IN ROASTERS FOR COFFEE, COCOA, CHICORY, AND SIMILAR SUBSTANCES
Year: 1856

page_text: LETTERS PATENT to Edward Burwell, of Gainsborough, in the County of
Lincoln, Coffoo Merchant, for the Invention of "AN IMPROVEMENT IN
ROASTERS FOR COFFEE, COCOA, CHICORY, AND SIMILAR SUBSTANCES."
Sealed the 5th June 1857, and dated the 8th December 1856.
PROVISIONAL SPECIFICATION left by the said Edward Burwell at the
Office of the Commissioners of Patents, with his Petition, on the
8th December 1856.
I, EDWARD BURWELL, of Gainsborough, in the County of Lincoln, Coffee
Merchant, do hereby declare the nature of the said Invention for "AN
IMPROVEMENT IN ROASTERS FOR COPPEE, COCOA, CHICORY, AND SIMILAR SUBSTANCES,"
to be as follows :-
My Invention consists in the employment of wire or wire gauze, or of
perforated zinc or other metal to form the ends of the ordinary sheet-iron
coffee cylinder or cylinders used in roasting coffee, chicory, cocoa, and other
like substances, whereby a more rapid evaporation of the steam takes place,
and the coffee or other substance is roasted in at least two-thirds of the time
required by the ordinary cylinders hitherto in use, and a superior flavor is
imparted to the substance when roasted.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edward Burwell in the Great Seal Patent Office on the
8th June 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
BURWELL, of Gainsborough, in the County of Lincoln, Coffee Merchant, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of December, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Edward Burwell, Her special licence that I, the said Edward Burwell, my
executors, administrators, and assigns, or such others as I, the said Edward
Burwell, my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during tho
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 IMPROVEMENT IN ROASTERS FOR
COFFEE, COCOA, CHICORY, AND SIMILAR SUBSTANCES," upon the condition (amongst
others) that I, the said Edward Burwell, 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 Edward Burwell, 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:―
My Invention consists in the employment of wire or wire gauze, or of
perforated zinc or other metal to form the ends of the ordinary or other sheet-
iron coffee cylinder or cylinders used'in roasting coffee, chicory, cocoa, and.
other like substances, whereby a more rapid evaporation of the steam takes
place, and the coffee or other substance is roasted in at least two-thirds of
the time required by the ordinary cylinders hitherto in use, and a superior
flavor is imparted to the substance when roasted.
The Drawing hereunto annexed represents the manner in which I carry my
Invention into effect.
Figure 1 is an end view and Figure 2 a longitudinal section of a coffee

page_text: roaster constructed with my improvement. A, A, are rings mounted upon
the driving shaft B. These rings have each two flanges, to the outer of
which is fixed an outer cylinder C, C, which has no perforations formed in it,
and to the inner of these flanges is fixed an inner wire guaze cylinder D, D,
within which the substances to be roasted are placed. This inner cylinder
may, if desirable, be formed of sheet metal without perforations, or may be
entirely dispensed with. E, E, are the ends of the roaster, formed of wire
gauze, and fixed to the inner faces of the rings A, A; F, F, is the oven or
furnace employed for heating the cylinders. Instead of wire gauze laid wire
or perforated iron, zinc, or other suitable metal may be employed.
The arrangement and combination of parts may likewise be varied from
those herein-before described without departing from my Invention.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declaro that I claim forming the ends
of the ordinary sheet-iron coffee cylinder or cylinders of wire or wire guaze,
or of perforated zinc or other metal, as herein-before described.
In witness whereof, I, the said Edward Burwell, have hereunto set my
hand and seal, this Eighth day of June, One thousand eight hundred
and fifty-seven.
Witness,
GEO. JNO. ROBINSON,
Nottingham.
EDWARD BURWELL. (L.S.)