IMPROVEMENTS IN KILNS FOR STEAMING AND BURNING BRICKS OR OTHER FORMS
Year: 1879

page_text: LETTERS PATENT to William Kirby, of Leeds, in the County of York, for
the Invention of "IMPROVEMENTS IN KILNS FOR STEAMING AND BURNING
BRICKS OR OTHER FORMS."
Soaled the 25th May 1880, and dated the 28th November 1879.
"
IMPROVEMENTS IN KILNS
PROVISIONAL SPECIFICATION left by the said William Kirby at the Office
of the Commissioners of Patents on the 28th November 1879.
WILLIAM KIRBY, of Leeds, in the County of York.
FOR STEAMING AND BURNING BRICKS OR OTHER FORMS."
The object of my Invention is to effect a saving in the steaming and burning of
bricks or other forms, at the same time to burn them more evenly than hitherto.
My Invention refers to a kiln formed into two chambers of any suitable length,
and one at the end of the other. One of these chambers 1 use entirely for steaming
and burning pressed bricks or forms, and the other for ordinary or common bricks
or forms.
The required heat is imparted for burning and steaming the pressed bricks by
means of side fires acting direct upon them. In arranging the common bricks or
other forms for burning I build them up in the interior of the kiln in lots, each lot
being separated from the other by a partition wall of green bricks. Into each of
these compartments I provide openings into flues which are in communication with
the pressed brick compartment, and am enabled to admit steam and heat into any
of the divisions for steaming, drying, and burning purposes; and in order to
intensify and obtain the beat I supply fuel to any number of divisions through feed
holes at the top. The waste heat and steam may be conducted to any convenient
stack or chimney.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Kirby in the Great Seal Patent Office on the 28th May
1880.
"
IMPROVEMENTS IN KILNS
WILLIAM KIRBY, of Leeds, in the County of York.
FOR STEAMING AND BURNING BRICKS OR OTHER FORMS."
The object of my Invention is to effect a saving in the steaming and burning of
bricks and other forms, at the same time to burn them more evenly than hitherto.
My Invention refers to a kiln formed into two chambers of any suitable length,
and one at the end of the other. One of these chambers I use entirely for steaming
and burning pressed bricks or forms, and the other for ordinary or common bricks
or forms.
The required heat is imparted for burning and steaming the pressed bricks by
means of side fires acting direct upon them. In arranging the common bricks
or other forms for burning I build them up in the interior of the kiln in lots,
each lot being separated from the other by a partition wall of green bricks. Into
each of these compartiments I provide openings into flues which are in communi-
cation with the pressed brick compartment, and am enabled to admit steam and
heat into any of the divisions for steaming, drying, and burning purposes; and
in order to intensify and obtain the heat I supply the fuel to any number of
divisions through feed holes at the top. The waste heat and steam may be con-
ducted to any convenient " stack or chimney.
"
And in order that my Invention may be more completely understood, reference
D...
and to the latters and marks thereon
DESCRIPTION OF DRAWINGS.
Fig. 1 is a side elevation; Fig. 2, a sectional plan at floor line Fig. 1; Fig. 3, a
sectional plan through C, D, Fig. 4; Fig. 4, a transverse section through E, F,
Fig. 1; Fig. 5, a transverse section through chamber A at G, H, Fig. 2.
A is the first chamber of the kiln to which I apply the side fires at a, and in
order to shield off and distribute the heat from the fires a I employ the walls b
in front of the fires. This chamber A is adapted for burning and steaming
pressed bricks, terra cotta, tiles, and other plastic forms.
The long chamber B is more especially applicable for burning common or stock
bricks or other forms, and when used is divided into smaller chambers or sections,
such as shewn at 1; 2, 3, 4, 5, 6, 7, and S. These divisions are made or formed by
means of walls c of green or unburnt bricks, these being burnt along with the bricks
or other forms stacked between them. The heat flue d extends the full longth of
the kiln and thence to a chimney or "stack e. The heat required for burning and
steaming purposes passes through openings f from first chamber A.
The method of steaming and burning the bricks is as follows:-
I commence by firing the first chamber A, and as soon as the bricks or other
forms are steamed and the moisture passed off I close the damper g at the end of
the heat flue d, and the dampers h of No. 1 section are opened. By this means all
the waste heat from chamber A passes from the heat fluc d through the side flues i
into the various sections through openings J, any of which may be closed at pleasure
by a suitable damper. By this means the bricks or other forms are thoroughly
steamed, and afterwards fired for burning purposes from the top of the kiln through
the feed holes k.
When division 1 of the long chamber B are steamed off, the side dampers h of
No. 2 division are opened, and the dampers of the first division closed. The waste
heat from chamber A passes into this, acting in the same manner as for the first
chamber. It is then burnt off by firing at the top.

page_text: Each division is treated in the same manner in succession until the whole kiln is
burnt off.
When the last division is being burnt off, the waste heat may be taken back to
chamber A by lowering the dampers at the ends of the side flues i and opening
dampers at the top of vertical flues m, thence along horizontal flue n and in at the
top of chamber A, thence through and amongst the bricks or other forms, after
opening damper g passes along heat flue & to the "stack" or chimney.
o are feed holes which may be used when required in chamber A.
The doorways p, q, r, may be walled up or otherwise closed when the kiln is in
operation. Side openings & are a ready approach into kiln for charging and
uncharging.
The chamber A may be stayed by tie rods or other known means.
Having now described the nature of my said Invention, and described by the aid
of Drawings how the same may be carried into practice, I will have it under-
stood that I do not limit myself to the precise details or configuration of the parts
I have described and shewn, as the same may be varied or modified without
departing from the nature or principle of my said Invention, but what I do claim
and desire to be secured to me by Letters Patent is,—
First. The arrangement and combination of flues & and i with side passages J,
substantially as and for the purposes herein set forth.
Second. The arrangement and combination of the various parts forming the kiln,
substantially as and for the purposes herein set forth.
In witness whereof, I, the said William Kirby, have hereunto set my hand and
seal, this Twenty sixth day of May, in the year of our Lord One thousand
eight hundred and eighty.
WILLIAM KIRBY. (L.S.)