AN IMPROVEMENT OR IMPROVEMENTS IN CONSUMING OR SUPPRESSING THE SMOKE OF STEAM ENGINE BOILER AND OTHER FURNACES
Year: 1854

page_text: LETTERS PATENT to Thomas Mayos Woodyatt, of Kinver Mills, in the
County of Stafford, Screw Manufacturer, for the Invention of "AN
IMPROVEMENT OR IMPROVEMENTS IN CONSUMING OR SUPPRESSING THE SMOKE
OF STEAM ENGINE BOILER AND OTHER FURNACES."
Sealed the 27th October 1854, and dated the 17th July 1854.
PROVISIONAL SPECIFICATION left by the said Thomas Mayos Woodyatt
at the Office of the Commissioners of Patents, with his Petition, on the
17th July 1854.
I, THOMAS MAYOS WOODYATT, of Kinver Mills, in the County of Stafford,
Screw Manufacturer, do hereby declare the nature of the Invention for "AN
IMPROVEMENT OR IMPROVEMENTS IN CONSUMING OR SUPPRESSING THE SMOKE OF STEAM
ENGINE BOLLER AND OTHER FURNACES" to be as follows:-
My said Invention consists in introducing air into steam engine boiler and
other furnaces in the following manner, by which said introduction of air the
smoke which ordinarily rises from such furnaces is wholly or in part consumed.
or suppressed. I effect the said introduction of air by building two walls, or a
hollow or double bridge, in the place usually occupied by the ordinary bridge.
The space between the said walls is closed at bottom by a plate of iron or other
suitable material, the said plate being perforated with small holes. Air passes
from the ash pit through the said holes, and rising up the space between the

page_text: two walls, constituting the hollow or double bridge, mixes with the gaseous
combustible matter passing over the said bridge, and effects the combustion of
the same.
An opening which may be closed by a door is made at the side of
the furnace immediately over the perforated plate, through which opening the
dust which accumulates on the said plate may be removed therefrom by a rake
or otherwise....
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Mayos Woodyatt in the Great Seal Patent Office on
the 12th January 1855.
:
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
MAYOS WOODYATT, of Kinver Mills, in the County of Stafford, Screw Manu-
facturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of July, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, tho
said Thomas Mayos Woodyatt, Her special licence, that I, the said Thomas
Mayos Woodyatt, my executors, administrators, and assigns, or such others
as I, the said Thomas Mayos Woodyatt, 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 Kindom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for
"AN IMPROVEMENT OR IMPROVEMENTS IN CONSUMING OR SUPPRESSING THE SMOKE OF
STEAM ENGINE BOILER AND OTHER FURNACES," upon the condition (amongst
others) that I, the said Thomas Mayos Woodyatt, 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 Thomas Mayos Woodyatt, 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 said Invention consists in consuming or suppressing the smoke of

page_text: steam engine boiler and other furnaces in the manner herein-after particularly
described and illustrated in the accompanying Drawing.
Figure 1 represents. in vertical longitudinal section, a furnace of a steam
engine boiler constructed according to my Invention. a is the fire-place;
b, the ash-pit; c, d, are two walls extending across the back of the furnace,
and constituting a hollow or double bridge, occupying the place usually occu-
pied by the ordinary bridge. The space between the said walls c, d, is closed
at bottom by a plate c, of iron or other suitable material, the said plate being
perforated with small holes. Figure 2 represents the plate e in plan. Air
passes from the ash pit through the holes in the plate e, and rising up between
the two walls c, d, mixes with the gaseous combustible matter passing over the
said bridge, and effects the combustion of the same. The course of the air is
indicated by the arrows in Figure 1. An opening is made at the side of the
furnace, immediately over the perforated plate e, through which said opening
the dust which accumulates on the said plate may be removed therefrom by a
rake or otherwise. The said opening is closed by a door, excepting during the
time of cleansing the plate e.
Although I have only described my Invention as applied to the furnace of a
steam engine boiler, yet my said Invention is applicable to all furnaces in which
a bridge is or may be employed.
Having now described the nature of my said Invention, and the manner of
carrying the same into effect, I wish it to be understood that I do not limit
myself to the precise details herein described, as the same may be varied
without departing from the nature of my said Invention; but I claim as my
Invention introducing air into steam engine boiler and other furnaces, for the
purpose of suppressing or consuming the smoke thereof, through a plate, having
small perforations situated at the bottom of a hollow or double bridge, as
herein described and illustrated in the accompanying Drawing.
In witness whereof, I, the said Thomas Mayos Woodyatt, have hereunto
set my hand and seal, this Eleventh day of January, in the year of our
Lord One thousand eight hundred and fifty-five.
Witness,
GEORGE SHAW.
THOMAS MAYOS WOODYATT. (L.S.)