A NEW OR IMPROVED APPARATUS FOR ROASTING TOBACCO FOR SNUFF, ALSO APPLICABLE FOR ROASTING, BAKING, BURNING, OR DRYING COFFEE, MALT, AND OTHER GRANULAR, PULVEROUS, AND VEGETABLE SUBSTANCES."
Year: 1869

page_text: LETTERS PATENT to Robert James Goodbody, of No. 1, Charleville
Square, Tullamore, King's County, and Richard Edward Donovan,
of Ashgrove House, Upper Rathmines, in the County of Dublin,
Ireland, for the Invention of "A NEW OR IMPROVED APPARATUS FOR
ROASTING TOBACCO FOR SNUFF, ALSO APPLICABLE FOR ROASTING, BAKING,
BURNING, OR DRYING COFFEE, MALT, AND OTHER GRANULAR, PULVEROUS, AND
VEGETABLE SUBSTANCES."
Sealed the 19th April 1870, and dated 22nd October 1869.
PROVISIONAL SPECIFICATION left by the said Robert James Goodbody
and Richard Edward Donovan at the Office of the Commissioners
of Patents, with their Petition, on the 22nd October 1869.
We, ROBERT JAMES GOODBODY, of No. 1, Charleville Square,
Tullamore, King's County, and RICHARD EDWARD DONOVAN, of Ash-
grove House, Upper Rathmines, in the County of Dublin, Ireland, do
hereby declare the nature of the said Invention for "A NEW OR IMPROVED
APPARATUS FOR ROASTING TOBACCO POR SNUFF, ALSO APPLICABLE FOR ROASTING,

page_text: BAKING, BURNING, OR DRYING COFFEE, MALT, AND OTHER GRANULAR, PULVEROUS,
AND VEGETABLE SUBSTANCES," to be as follows:-
"Our Invention consists in constructing a horizontal or slightly inclined
cylindrical or conical casing having, firstly, a helical or screw blade or
passage formed in one direction upon its inner circumference, connected
at the one (or the back) end with a second central helical passage passing
in the contrary direction to the first-named one, which central passage
communicates at its other (or front) end, firstly, by means of a side
aperture with the front end of the outer screw blade or passage, and,
secondly, by an end aperature (having a door or slide) with the outside
of the casing. The tobacco stalks or other substance to be roasted,
baked, burnt, or dried being inserted into the outer helical passage
(heated by any suitable means) through an opening in the one end
surface of the cylindrical casing provided with a slide or door, and the
apparatus having rotary motion imparted to it by any suitable known
means, the substance to be roasted will thereby be caused to travel from
the front end of the outer helical passage to the back end, and from
thence into the central passage, where it is conducted forward again to
the front end. Here the opening in the casing being closed the sub-
stance falls through the before-mentioned side aperture into the outer
passage, in which it again travels to the back end, and so on, passing if
necessary continually backwards and forwards in the apparatus until
the operation of drying, roasting, or burning is completed, whereupon
by adjusting the slide or door at the end aperture of the central passage
the roasted substance will by the continued rotation of the apparatus
then be caused to pass out through such end opening. The rotating
casing may be supported either by a central axle or trunnions running
in bearings, or if the apparatus is of large dimensions it may rest upon
antifriction rollers.
SPECIFICATION in pursuance of the conditions of the Letters Patent, 30
filed by the said Robert James Goodbody and Richard Edward
Donovan in the Great Seal Patent Office on the 21st April 1870.

page_text: County, and RICHARD EDWARD DONOVAN, of Ashgrove House, Upper
Rathmines, in the County of Dublin, Ireland, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of October, in the
year of our Lord One thousand eight hundred and sixty-nine, in the
thirty-third year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Robert James Goodbody and Richard
Edward Donovan, Her special licence that we, the said Robert. James.
Goodbody and Richard Edward Donovan, our, executors, administrators,..
and assigns, or such others as wc, the said Robert James Goodbody and
Richard Edward Donovan, 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 "A NEW OR IMPROVED APPARATUS FOR ROASTING TOBACCO FOR
SNUFF, ALSO APPLICABLE FOR ROASTING, BAKING, BURNING, OR DRYING COFFEE,
MALT; AND OTHER GRANULAR, PULVEROUS, AND VEGETABLE SUBSTANCES,"
upon
the condition (amongst others) that we, the said Robert James Goodbody
and Richard Edward Donovan, our executors or administrators, by an
instrument in writing under our, or their, or one of their hands and
scals, 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 Scal Patent Office within six calendar..
months next and immediately after, the date of the said Letters Patent..
NOW KNOW YE, that we, the said Robert James Goodbody and
Richard Edward Donovan, do hereby declare the nature of our said
Invention, and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement
thereof, reference being had to. the accompanying Sheet of Drawings,
and to the figures.and letters marked thereon, that is to say :-
Our Invention consists in constructing a horizontal or slightly inclined
cylindrical or conical casing having, firstly, a helical or screw blade or
passage formed in one direction upon its inner circumference, connected
at the one (or the back) end with a second central helical passage passing
in the contrary direction to the first-named one, which central passage.com--
municates at its other (or front) end, firstly, by means of a side aperture

page_text: with the front end of the outer screw blade or passage, and, secondly,
by an end aperture (having a door or slide) with the outside of the
casing. The tobacco stalks or other substance to be roasted, baked,
burnt, or dried being inserted into the outer helical passage (heated by
any suitable means) through an opening in the one end surface of the
cylindrical casing provided with a slide or door, and the apparatus
having rotary motion imparted to it by any suitable known means, the
substance to be roasted will thereby be caused to travel from the front
end of the outer helical passage to the back end, and from thence into
the central passage, where it is conducted forward again to the front
end. Here the opening in the casing being closed the substance falls
through the before-mentioned side aperture into the outer passage, in
which it again travels to the back end, and so on, passing if necessary
continually backwards and forwards in the apparatus until the operation
of drying, roasting, or burning is completed, whereupon by adjusting
the slide or door at the end aperture of the central passage the roasted
substance will by the continued rotation of the apparatus then be
caused to pass out through such end opening. The rotating casing may
be supported either by a central axle or trunnions running in bearings,
or if the apparatus is of large dimensions it may rest upon antifriction
rollers.
shewn one arrangement of our
Figure 1 shews a longitudinal
On the accompanying Drawing is
before-described improved apparatus.
section of the same; Figure 2 shews an elevation of the front end
thereof; Figure 3 shews the same with the trunnion and slide removed; i
and Figure 4 shews a transverse section at X, X, Figure 1.
A, A, is a cylindrical wrought-iron casing having a circular opening in
each end surface. On the interior cylindrical surface of the casing is
formed a helical or screw blade B leading from the front or inlet end A¹
to the back end A. This helical blade is connected at the back end
with the end of a second central helical passage C, which passes in a
contrary direction to B from the back end A2 to the front end A', where
it communicates by a funnel-shaped mouth c with the central opening of
the casing. The apparatus is supported at each end by central trun-
nions D, D', fixed thereto running in bearings E, E', and has a slow
rotary motion imparted to it in the direction of the arrow by means of a
pulley and belt at F, or by any other suitable driving gear. From this

page_text: arrangement it will be seen that if any substance, such as tobacco stalks,
be introduced into the casing through the central opening at A' the
rotary motion of the latter will cause it to travel to the back end, where it
will be guided by the screw blade B into the end of the central helical
passage C, which by the continued rotation of the casing will conduct
the substance back to the front end again. Here, assuming that the
central aperture is closed, the substance falls from the central passage C
on to the inner surface of the casing again, and is consequently again
made by the screw blade B to travel to the back end, and thus the sub-
stance is made to travel backwards and forwards in the apparatus until
the operation of roasting or burning is completed, whereupon the front
aperture is opened in such a manner as to allow the substance after
travelling forward in the central passage to escape from the same through
the aperture. For this purpose a cover or slide G is provided turning
upon a pin at II, so that when in the position shewn in black lines in
Figure 2 it closes the front opening entirely, whereas if moved into the
position shewn in red lines at Figure 3 it uncovers that part a of the
opening which communicates with the inner circumference of the casing,
thus allowing the substance to be introduced into the apparatus, and if
moved into the position shewn in blue lines it uncovers the funnel-
shaped end c of the the central passage C, thus allowing the substance to
escape as before mentioned. The aperture in the casing may be made
somewhat excentric, if desired, to facilitate the escape of the stalks or
other substance. The slide G may be pressed tight against the aperture
in either position by means of a screw at K, or by any other suitable
contrivance. The apparatus is suspended over a fire-grate I, and is, if
requisite, surrounded by a chamber or flue leading from the fire to a
chimney, or any other convenient arrangement for applying the requisite
heat to the apparatus may be employed.
Having thus described the nature of our Invention, and in what
manner the same is to be performed, we wish it to be understood that
we do not limit ourselves to the precise arrangement of our improved
apparatus as shown on the accompanying Drawing, as this may be
variously modified without departing from the nature of our Invention;
but what we claim is, the construction and use of apparatus for roasting
tobacco stalks and other substances wherein such substances are caused
to pass first from one end to the other of the apparatus by an outer or

page_text: circumferential screw blade or passage, and are then made to. enter a
central helical passage, which conducts the substance back in the
contrary direction, the apparatus being provided with a slide or cover
whereby either the inlet aperture to the circumferential passage or the
outlet aperture to the central passage or both may be closed, substantially
as herein-before set forth.
In witness whereof, we, the said Robert James Goodbody and
Richard Edward Donovan, have hereunto set our hands and
seals, this Twentieth day of April, in the year of our Lord One
thousand eight hundred and seventy.
(L.S.)
R. J. GOODBODY.
RICHARD E. DONOVAN. (L.S.)