Improvements in Brick and Pottery Kilns.
Year: 1890

page_text: Date of Application, 3rd Mar., 1890
Complete Specification Left, 27th Nov., 1890-Accepted, 24th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Brick and Pottery Kilns.
We, THOMAS FLETCHER of Garecroft House, RICHARD CRAGG BROWN of Providence
Place, and WILLIAM URE, of Sunniside, all in Seaton in the Parish of Camerton and
County of Cumberland, do hereby declare the nature of this invention to be as
follows:-
Our invention of improvements in brick and pottery kilns consists in arrangements
whereby the products of combustion are led into a combustion chamber from whence
by means of a series of flues and dampers they may be led into the chimney of the
kiln or, in alternative, into a flue from which other kilns can be supplied so as a
second time to make use of the gases for a second kiln and if desired they may be used
a third time or more frequently.
We build (we will say for clearness of description) four kilns each provided with a
separate combustion chamber which receives the waste gases of the kiln; this com-
bustion chamber is provided with a flue leading to the chimney, but also
with a damper in that flue by which the access to the chimney may be
closed. The combustion chambers are also provided with other exit flues,
leading under the floor of the kiln to a flue passing round the kilns, which flue leads
to openings in the floors of the kilns near to the fire holes; and dampers are
provided so as to shut or open the communications as desired. We are thus enabled
to use say one kiln in the ordinary way and to convey the highly heated gases which
ordinarily escape to the chimney into a second kiln, and from thence if need be to a
third and so on. We are further enabled by bringing a highly heated gas into
contact with smoke from a green fire to consume to a considerable extent the smoke
and prevent discoloration of the product, and to facilitate this we use an arrangement
of air valve leading into the combustion chambers which may be closed or opened at
pleasure.
Dated this 1st dow of March 1800
JAMESON & SCHAEFFER,
Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in Brick and Pottery Kilns.
We, THOMAS FLETCHER of Garecroft House, and RICHARD CRAGG BROWN of
Providence Place, and WILLIAM URE of Sunniside, all in Seaton, in the Parish of
Camerton and County of Cumberland, do hereby declare the nature of this invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
Our invention of improvements in brick and pottery kilns consists in arrangements
whereby the products of combustion are led into a combustion chamber from whence
by a series of flues and dampers they may be led into the chimney of the kiln or in
alternative into a flue from which other kilus can be supplied so as a second time to
make use of the gases for a second kiln and if desired they may be used a third time
or more frequently.
We build (we will say for clearness of description) four kilns, each provided with a
separate combustion chamber which receives the waste gases of the kiln, this com-
bustion chamber is provided with a flue leading to the chimney, but also with a
damper in that flue by which the access to the chimney may be closed. The combus-
tion chambers are also provided with other exit flues leading under the floor of the
kiln to a flue passing round the kilns, which flue leads to openings in the floors of the

page_text: kilns near to the fire holes, and dampers are provided so as to shut or open the com-
munications as desired. We are thus enabled to use any one kiln in the ordinary way,
and to convey the highly heated gases which ordinarily escape to the chimney into a
second kiln, and from thence if need be to a third one and so on. We are further enabled,
by bringing a highly heated gas into contact with smoke from a green fire, to consume
to a considerable extent the smoke and prevent discoloration of the product; and to
facilitate this we use an arrangement of air valves, leading into the combustion
chambers, which may be closed or opened at pleasure.
In the drawings hereto attached
Fig. 1. is an elevation of the front of the kilns.
Fig. 2. is a plan of four kilns half in section and half seen from the top, and
Fig. 3. is a section of Fig. 2 on the line A. B.
The same letters represent the same parts in all figures.
C, are the fire doors which are of the ordinary construction with external dampers
shewn in Fig. 1. The exit openings from the kilns are shewn in Fig. 2 all marked D.
The combustion chambers are marked E. and the chimney exit from the combustion
chambers are marked F. The chimney exit may be closed by the damper suspended
from the pulley G. The other exits from the combustion chambers are marked H,
and they may be closed by the dampers suspended from the pulley I.
It will be seen that the products of combustion invariably pass into the combustion
chamber, but they may pass from thence either into the chimney direct or into the
exit H, from whence they can be drawn into any of the other three kilns in which
there may be adequate suction. The air valve leading into the combustion chamber is
shewn at J. The return flue into the kiln is marked K. and the circular flue round
the kiln is marked L. The return flues K lead into a distributing passage M, which
is partly covered with brickwork set dry and open. There is an arrangement of
dampers the pullies of which are marked N, which shut off the passages K. from the
passage L. when desired.
Having thus described the drawings we will proceed to describe the mode of
operation. When a kiln is first fired the greater part of the heat of the products of
combustion is absorbed in the cold contents of the kiln, and we then find it of great
advantage to turn in the waste gases from a kiln nearly burned off or at least well
heated and we do this by regulation of the dampers shewn in the drawing. We can
thus in an important degree consume the smoke in a cool kiln; we can hasten the
heating of the kiln ; we can save coal, and we can produce a better product.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
The construction of brick and pottery kilns with combustion chambers, return flues,
and dampers substantially as described.
Dated this Nineteenth day of November 1890.
JAMESON & SCHAEFFER,
Agents for Applicants.