Im- PROVEMENTS IN KILNS FOR BURNING BRICKS, TILES, AND POTTERY, AND IN CONSUMING SMOKE IN CHEMICAL FURNACES AND BOILER FURNACES
Year: 1868

page_text: LETTERS PATENT to William Daglish, of Willington Quay, in the
County of Northumberland, Manager, for the Invention of "Im-
PROVEMENTS IN KILNS FOR BURNING BRICKS, TILES, AND POTTERY, AND IN
CONSUMING SMOKE IN CHEMICAL FURNACES AND BOILER FURNACES."
Sealed the 8th December 1868, and dated the 30th June 1868.
PROVISIONAL SPECIFICATION left by the said William Daglish at the
Office of the Commissioners of Patents, with his Petition, on the
30th June 1868.
I, WILLIAM DAGLISH, of Willington Quay, in the County of
Northumberland, Manager, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN KILNS FOR BURNING BRIOKS, TILES, AND
POTTERY, AND IN CONSUMING SMOKE IN CHEMICAL FURNACES AND BOILER
FURNACES," to be as follows:-
The object of my Invention is to economize fuel and labour in working
kilns, furnaces, and boilers.
In carrying out my Invention in the burning of fire-clay goods I
make use of two fire-places, one at each side of the kiln, and at the

page_text: inner side of the fire-place or that nearest the centre of the kiln I place
a perforated wall, which may be made of perforated brick, and admits air
to the body of the fire. The bottom of the fire-place is perforated and
the wall placed at the back of the fire to check the flames and smoke is
also perforated for the purpose of spreading the heat to the centre of the
kiln. In certain cases the centre fire in the doorway will answer the
same purpose, and in such a case the two side fires will be done away
with, but there are two flues at the sides of the kiln. There is a flue
which runs alongside the side fire-place for the purpose of carrying air
to the top of the fire so as to keep it bright and cause a quick heat, and
to drive the heat to the centre of the kiln. The fire-places are arched
or domed and rounded in order that the air that is admitted to the fire-
place may be reverberated and driven down on to the fire, and from
thence through or among the bricks, tiles, and pottery, or other articles
contained in the kiln, and from thence to the flues at the back of the
kiln leading to the chimney. By this arrangement the heat in the kiln
will be more regular and uniform, and will be more effectually utilized
than in ordinary kilns. Stoking holes are made in the front walls of the
fire-places for the purpose of supplying the fire with fuel, and air is
admitted below the fire through suitable openings which conduct it to
the perforated bottom and sides, whereby the air is conveyed to the fire
and passes into the interior of the kiln. In order to economize fuel and
consume the smoke in the fire-places of boilers or chemical furnaces I
place at the end of the fire-bars a wall of perforated bricks through
which the flame, smoke, and gases from the fuel pass in a horizontal
direction, while air from beneath is allowed to pass up and intermingle
between the combustible.gases.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Daglish in the Great Seal Patent Office on
the 80th December 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
DAGLISH, of Willington Quay, County of Northumberland, Manager,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirtieth day of June, in the year of

page_text: our Lord One thousand eight hundred and sixty-eight, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Daglish, Her special licence
that I, the said William Daglish, my executors, administrators, and
assigns, or such others as I, the said William Daglish, 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
KILNS FOR BURNING BRICKS, TILES, AND POTTERY, AND IN CONSUMING SMOKE
IN CHEMICAL FURNACES AND BOILER PURNACES," upon the condition
(amongst others) that I, the said William Daglish, 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 William Daglish, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement, reference being had to the Drawing hereunto
annexed, and to the letters and figures marked thereon (that is to
say):-
The object of my Invention is to economize fuel and labor in working
kilns, furnaces, and boilers.
In the accompanying Drawing Fig. 1 is a longitudinal vertical section,
Fig. 2 is a cross section, and Fig. 3 a sectional plan view of a kiln
constructed according to my Invention for the burning of fire-clay
goods.
It will be seen that there are two fire-places A, A', one at each side
of the kiln, and at the inner side or end of the fire-place or that nearest
the centre of the kiln I place a perforated wall a which may be made
of perforated brick, this wall a admits air to the body of the fire.
The bottom of the fire-place is perforated, and the wall c placed at
the back of the fire to check the flames and smoke is also perforated
for the purpose of spreading the heat to the centre of the kiln. ID

page_text: certain cases a centre fire in the doorway will answer the same purpose,
and in such a case the two side fires will be dispensed with. In the
side fires there are two flues d, d, at the sides of the kiln which runs
alongside the side fire-place for the purpose of carrying air to the top
of the fire so as to keep it bright and cause a quick heat, and to drive
the heat from the fire-place to the centre of the kiln. The fire-places
are arched or domed, as shewn at e, Fig. 2, and are rounded in order
that the air that is admitted to the fire-place may be reverberated and
driven down on to the fire, and from thence through or among the bricks,
tiles, and pottery or other articles placed on the floor of the kiln, and
from thence to the flues f, f, f, at the back of the kiln leading to
the chimney. By this arrangement the heat in the kiln will be
rendered more regular and uniform, and will be more effectually utilized
than in ordinary kilns. Stoking holes g, g, are made in the front walls
of the fire-places for the purpose of supplying the fire with fuel, and air
is admitted below the fire through suitable openings h, h, which conduct
it to the perforated bottom band sides, whereby the air is conveyed to
the fire and passes into the interior of the kiln. In order to economize
fuel and consume the smoke or combustible gases arising from the
fire-places of boilers or chemical furnaces I place at the end of the
fire-bars a hollow wall constructed of perforated bricks through which
the flame, smoke, and gases from the fuel pass in a horizontal direction,
while air from beneath is allowed to pass up and intermingle between
the combustible gases.
Fig. 4 is a longitudinal section of a boiler furnace fitted with a
perforated wall or bridge having horizontal and vertical perforations
for the passage of the flame and heated gases and for the supply of air.
Fig. 5 shews in longitudinal section a chemical furnace, and Fig. 6
a sectional plan of the same; a, a, are the horizontal flues for the supply
of air, and 6 the vertical perforations in the end wall c whence it issues
and intermingles with the combustible gases.
Having now described my Invention of "Improvements in Kilns for
Burning Bricks, Tiles, and Pottery, and in Consuming Smoke in Chemical
Furnaces and Boiler Furnaces," and having explained the manner of
carrying the same into effect, I claim as the Invention secured to me
by Letters Patent as aforesaid,-
The mode herein set forth of constructing and arranging the fire-places
of kilns or pottery ovens.

page_text: I also claim adapting to the fire-places of boilers or chemical furnaces
a perforated bridge as herein set forth for the purpose of causing air
to commingle with the combustible gases arising from the fuel and
assisting in consuming the same.
In witness whereof, I, the said William Daglish, have hereunto set
my hand and seal, the Twenty-eighth day of December, in the
year of our Lord One thousand eight hundred and sixty-eight.
Witness,
JOHN DAGLISH,
Forge House,
Blaydon-on-Tyne.
W. DAGLISH. (L.S.)