Improvements in Kilns for Drying and Burning Bricks, Tiles, and like Fictile Products
Year: 1894

page_text: Date of Application, 2nd June, 1894
Complete Specification Left, 4th Mar., 1895-Accepted, 6th Apr., 1895
PROVISIONAL SPECIFICATION.
Improvements in Kilns for Drying and Burning Bricks, Tiles, and
like Fictile Products.
We CHARLES DEAN, Foreman, and JOSEPH HETHERINGTON,, Manager, both
of The North Wales Brick and Tile Company Limited Rhydymwyn in the
County of Flintshire North Wales, do hereby declare the nature of this invention
to be as follows:-.
The invention relates to so called continuous kilns, or kilns in which a number of
chambers are worked in series.
The main object is to so arrange, construct the flues and operate the dampers in
the said kilns as to obtain more uniform efficient and economical drying of the
green material.
For the above purpose we provide the tops of the chambers with openings
leading to flues which pass along the tops of the chambers and then to a flue
leading to a smoke stack; we also provide openings at or near the bottoms of the
chambers leading into uptakes connected to a central flue. Dampers are fitted to
open and close the flues leading to the smoke stack and the uptakes connected to
the central flue. The dampers are so disposed that steam and moisture may pass
from the top of a kiln to the smoke stack whilst the heated gases in a kiln containing
the finished fictile products pass by the uptakes and central flue to the bottom of
the chamber containing the green material.
Dand
1004
Improvements in Kilns for Drying and Burning Bricks, Tiles, and
like Fictile Products.
We CHARLES DEAN, Foreman, and JOSEPH HETHERINGTON, Manager, both
of The North Wales Brick and Tile Co. Lim., Rhydymwyn, in the County of
Flintshire, North Wales, 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 :-
The invention relates to so called continuous kiln or kilns in which a number of
chambers are worked in series.
The main object is to so arrange and construct the flues and operate the dampers
in the said kilns as to obtain inore uniform efficient and economical drying of the
green material.
For the above purpose we provide the tops of the chambers with openings
leading to flues which pass along the tops of the chambers and then to a flue leading
to a smoke stack. We also provide openings at or near the bottoms of the
chambers leading into uptakes connected to a central flue. Dampers are fitted to
open and close the flues leading to the smoke stack and the up takes connected to
the central flue. The dampers are so disposed that steam and moisture may pass
ID 27

page_text: from the top of a chamber to the smoke stack whilst the heated gases in a kiln
containing the finished fictile products pass by the uptakes and central flue to the
bottom of the chamber containing the green material.
1
Fig. 1. is a view part in longitudinal vertical section and part in elevation,
Figs. 2, 3, 4, are vertical transverse sections, and Fig. 5 is a view part in plan and
part in horizontal section of a kiln constructed in accordance with our invention.
a, kiln chambers. b, openings leading from the tops of the chambers a into flues c,
which pass along the tops of the chambers thence downwards at d into a flue e,
leading to the smoke stack. f, are openings at or near the bottoms of the
chambers a leading into uptakes g connected to a central flue h. Dampers are
provided for opening aud closing the openings b, and the uptakes g. The steam
and moisture from. any chambers containing green material is allowed to, pass
by the openings 6 to the smoke, stack flue e.
b
The dampers may also be so
arranged as to allow the waste heat and products of combustion from one
chamber to pass into another chamber through the downtake, i, central flue h,
and openings f. j, are the usual feeding holes. k, usual kiln doors. m, waste.
gas flues leading to the smoke stack flue e, and provided with dampers in the
usual way.
The working of a kiln containing fourteen chambers as shown, would be as
follows: One would be getting filled; the next would be getting drawn; the
third would be cold; the fourth, fifth, and sixth would be cooling, the seventh,
-eighth and ninth would be burning; the tenth and eleventh would be red hot;
the twelfth black hot; the thirteenth dry; and the fourteenth being dried with
hot air flowing therethrough from the central flue.
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: .
Kilns with chambers having openings above leading to the smoke stack flue,
and to a central flue and separate openings below leading to a central flue and
also to the smoke stack flue in combination with dampers for directing the flow
of air, steam, products of combustion and waste gases substantially as and for
the purpose set forth.
Dated this Second day of March 1895.