IMPROVEMENTS IN REVERBERATORY AND OTHER FURNACES FOR CHEMICAL PURPOSES
Year: 1872

page_text: LETTERS PATENT to John Edward Tenison Woods, of 55, Camberwell
Grove, Parish of Camberwell, County of Surry, Chemical Engineer,
for the Invention of "IMPROVEMENTS IN REVERBERATORY AND OTHER
FURNACES FOR CHEMICAL PURPOSES."
Sealed the 19th July 1872, and dated the 29th January 1872.
PROVISIONAL SPECIFICATION left by the said John Edward Tenison
Woods at the Office of the Commissioners of Patents, with his
Petition, on the 29th January 1872.
I, JOHN EDWARD TENISON WOODS, of 55, Camberwell Grove,
Parish of Camberwell, in the County of Surry, Chemical Engineer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
REVERBERATORY AND OTHER FURNACES FOR CHEMICAL PURPOSES," to be as
follows ·
•

page_text: communicates with the hearth by several small openings. The said
hollow fire-bridge is fitted with a steam pipe having smaller branch
steam pipes fixed into it. Each of these small branch steam pipes is
inserted into the small openings in the bridge which lead into the
furnace. When the steam is turned on the small branch steam pipes
force a current of mixed air and steam over the floor of the furnace.
This is useful in creating an oxydising action and atmosphere which acts
on the objects to be oxydised, and also consumes the smoke from the
grate.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Edward Tenison Woods in the Great Seal
Patent Office on the 29th July 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
EDWARD TENISON WOODS, of 55, Camberwell Grove, Parish of Camber-
well, County of Surrey, Chemical Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-ninth day of January, in the
year of our Lord One thousand eight hundred and seventy-two, in
the thirty-fifth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said John Edward Tenison
Woods, Her special licence that I, the said John Edward Tenison
Woods, my executors, administrators, and assigns, or such others as
I, the said John Edward Tenison Woods, my executors, adminis-
trators, 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 REVER-
BERATORY AND OTHER FURNACES FOR CHEMICAL PURPOSES," upon the condition
(amongst others) that I, the said John Edward Tenison Woods, 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

page_text: oxidizing or deoxidizing action to ne obtained without lowering the neat
of the furnace or opening the charging doors to effect the object.
carry
In describing my said Invention more particularly, and how I
the same into effect in practice, I first construct the fire-bridge hollow
and connecting with the air; second, I make air openings from the
hollow fire-bridge to the hearth of the furnace; third, I fit a horizontal
steam pipe through the hollow fire-bridge fitted with jets opposite said
air openings; the number of said air openings and steam jets may be
varied for certain purposes; and, fourth, I fit a sliding shutter on the
entrance to the hollow fire-bridge by which I regulate or entirely exclude
the air when not required.

page_text: may be varied considerably in practice without departing from the
principles upon which my Invention is based, and what I claim as the
essential novelty in my said Invention consists in constructing the fire-
bridge with hollow chamber e in connection with the air openings d, d,
into the hearth, and the steam pipes with jets corresponding to said
openings for forcing a greater current of air and steam over the hearth
than otherwise would enter by the usual charging doors.
In witness whereof, I, the said John Edward Tenison Woods,
have hereunto set my hand and seal, this Twenty-ninth day of
July, in the year of our Lord One thousand eight hundred and
seventy-two.