IMPROVEMENTS IN HEATING REVERBERATORY AND OTHER FURNACES
Year: 1853

page_text: LETTERS PATENT to William Joseph Thompson, of North Shields,
in the County of Northumberland, Russian Vice-Consul, for
the Invention of "IMPROVEMENTS IN HEATING REVERBERATORY AND
OTHER FURNACES."-A communication.
Sealed the 1st April 1854, and dated.the 3rd October 1853.
PROVISIONAL SPECIFICATION left by the said William Joseph
Thompson at the Office of the Commissioners of Patents, with his
Petition, on the 3rd October 1858.
I, WILLIAM JOSEPH THOMPSON, of North Shields, in the County of
Northumberland, Russian Vice Consul, do hereby declare the nature
of the Invention for "IMPROVEMENTS IN HEATING REVERBERATORY AND
OTHER FURNACES" to be as follows:-
This Invention consists of constructing furnaces in the following
manner: The bars (each of which consists of a flat plate) are placed
parallel to each other, but so as to form an inclined grating. By this
arrangement small coal can be burned without falling thro' between
the bars. At the upper part of the grating there is a hopper which is
kept full of small coal; at the lower part of the grating there is formed
or placed a box or chamber, into which the well ignited fuel from the

page_text: inclined grating falls; and into this box or chamber a quantity of atmo-
spheric air is forced thro' several twyers or tubes, the oxygen of which
combines with the highly heated carbon. Streams of air are also intro-
duced at the bridge of the furnace, which may be heated by pipes or
passages added to the furnace, or by separate apparatus, as is well
understood.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Joseph Thompson in the Great Seal
Patent Office on the 3rd April 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
WILLIAM JOSEPHI THOMPSON, of North Shields, in the County of
Northumberland, Russian Vice Consul, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of October, in the year
of our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did,' for Herself, Her heirs and successors,
give and grant unto me, the said William Joseph Thompson, Her
special licence that I, the said William Joseph Thompson, my executors,
administrators, and assigns, or such others as I, the said William
Joseph Thompson, 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 HEATING REVERBERATORY AND OTHER
FURNACES," communicated to me from abroad, upon the condition
(amongst others) that I, the said William Joseph Thompson, by an
instrument in writing under my hand and seal, 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 William Joseph Thompson, do

page_text: 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):
This Invention consists of constructing furnaces in the following
manner: The bars (each of which consists of a flat plate) are placed
parallel to each other, but so as to form an inclined grating. By this
arrangement small coal can be burned without falling through between
the bars. At the upper part of the grating there is a hopper which is
keptfull of small coal; at the lower part of the grating there is formed
or placed a box or chamber into which the well-ignited fuel from the
inclined grating falls; and into this box or chamber a quantity of
atmospheric air is forced through several twyers or tubes, the oxygen
of which combines with the highly heated carbon. Streams of air are
also introduced at the bridge of the furnace, which may be heated by
pipes or passages added to the furnace, or by separate apparatus, as is
well understood.
And in order that the said Invention may be most fully understood
and readily carried into effect, I will proceed to describe the Drawing
hereunto annexed.
Figure 1, is a longitudinal section, and Figure 2, is a plan in section of
a reverberatory furnace, with the improved heating apparatus attached.
A, is the hopper into which the fuel is to be placed, and which is constantly
to be kept full of fuel. B, are the inclined bars, which are to be placed
at such an angle that the fuel will not at once roll to the bottom, but
will gradually descend by its own gravity as that below is consumed.
C, is the box into which the ignited fuel descends, and into which air is
forced by the twyers D, which are supplied with air, either heated or
otherwise, by the pipe E. The products pass into the body of the furnace
F, and are there (to insure perfect combustion) brought in contact
with another blast of air from the twyers G, which air is heated by
circulating in the passages H, but it may be otherwise heated. At the
two ends of the box C are doors I, I, by which the ashes are removed.
As the other parts of the furnace are of the ordinary construction no
detailed description will be necessary.
Having thus described the nature of the Invention, and the manner

page_text: of performing the same, I would have it understood that I do not
contine myself to the exact details described, but what 1.claim is, the
peculiar arrangement of the bars B, the box C, and the twyers D,
and G.
In witness whereof, I, the said William Joseph Thompson, have
hereunto set my hand and seal, this Twenty-fourth day of
March, in the year of our Lord One thousand eight hundred
and fifty-four.
Witness,
GEO. PITT,
4, Old Square.
W. J. THOMPSON. (L.S.)