Improvements in Kilns or Furnaces, applicable for Burning Lime, Cement, and other Minerals.
Year: 1896

page_text: Date of Application, 7th Feb., 1906
Complete Specification Left. 5th Nov., 1895-Accepted. 5th Dec.. 1898
Complete Specification Left. 5th Nov., 1895-Accepted, 5th Dec.. 1896
PROVISIONAL SPECIFICATION.
Improvements in Kilns or Furnaces, applicable for Burning Lime,
Cement, and other Minerals.
We, HENRY SIMMONDS, of Colne, in the County of Lancaster, Gas Engineer,
and JOHN DELANEY, of Horton in Ribblesdale, in the County of York, Lime
Burner and Quarry Owner, do hereby declare the nature of the said invention to be
as follows:-
This invention relates to improvements in the kilns described in the Specification
of Letters Patent granted to us No. 7425 A.D. 1895 which are fired or partially
fired with gaseous fuel from what is known as a producer.
We find that if the gases from the producer are first brought into a combustion
or burning chamber placed between the producer and the interior of the kiln which
can always be maintained at a high and even temperature that complete combustion
takes place and better and more economical results are obtained.
In carrying out the invention we construct the kiln with one or more transverse
arches or in any other suitable way and one or more producers of suitable con-
struction at the outside of the kiln. Between the gas outlet or delivery passage of
the producer and the inlet passage of the kiln we place a. burning or combustion
chamber of suitable size or area into which the hot gases from the producer and
the air to support. combustion enter. This combustion chamber is built of fire
brick and assumes a white or incandescent heat and is kept constantly at that
temperature without fluctuations or variations. Complete combustion of the gases
takes place therein and the products in a highly heated state are delivered to the
interion of the kiln. By this construction we raise the products to a greater
temperature than when combustion takes place in the interior of the kiln and
thereby obtain a greater heat in the interior.
We construct the arch or arches in the kiln with air passages running through
and the combustion chamber is constructed with air passages or flues surrounding
it. Air passages are also formed around the wall of the kiln. The air is brought
to the combustion chamber through one or more of these passages so that it is
heated to such a degree before entering the combustion chamber as not to cool
down the entering gases.
Openings for supplying solid fuel and air to the interior of the kiln may be
provided if desired but at present we do not consider either will be required.
The producer is constructed of any suitable size or shape and we prefer to place
the combustion chamber immediately above it though if found more convenient it
may be placed at either side. The bars are preferably made to revolve of star
shape geared together so that they can be readily cleaned and the clinkers or ashes
removed by turning them part of a revolution.
Dated this 5th day of February 1896.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: Improvements in Kilns or Furnaces, applicable for Burning Lime,
Cement, and other Minerals.
We, HENRY SIMMONDS, of Colne, in the County of Lancaster, Gas Engineer,
and JOHN DELANEY, of Horton in Ribblesdale, in the County of York, Lime
Burner and Quarry Owner, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to improvements in the kilns described in the Specification
of Letters Patent granted to us No. 7425 of 1895 which are fired or partially fired
with gaseous fuel from what is known as a producer.
We find that if the gases from the producer are first brought into a combustion
or burning chamber placed between the producer and the interior of the kiln which
can always be maintained at a high and even temperature that complete combustion
takes place and better and more economical results are obtained.
The invention will be fully described with reference to the accompanying
drawings.
Fig. 1. Front elevation of kiln with section through the producer.
Fig. 2. Plan partly in section on line - Fig. 5.
Fig. 3. Longitudinal sectional elevation through kiln and one producer the other
being shown in side elevation.
Fig. 4. Plan of same on line y-y Fig. 3.
Fig. 5. Transverse sectional elevation.
We now construct the kiln A with two parallel arches C placed across the kiln
in one direction and a transverse arch C¹ placed between them with slopes or
inclines c above the arches to direct the material to the apertures between them
instead of the single arch described in our previous specification as we find that
this form of constructor is better calculated to resist the force or pressure of the
material passing down through the kiln.
We place two producers E outside the body of the kiln, with an inlet D for
heated gases beneath the arches as before.
Between the gas outlet or delivery passage D¹ of the producer E and the inlet
passage D into the kiln we place a burning or combustion chamber E¹ of suitable
size and area into which the hot gases from the producer and the air to support
combustion enter. This combustion chamber is built of fire brick or other suitable.
refractory material and assumes a white or incandescent heat and is kept constantly
at that temperature without fluctuations or variations. Complete combustion of
the gases takes place therein and the products in a highly heated state are delivered
through the inlet D to the interior of the kiln. By this construction we raise the
gaseous products to a greater temperature than when combustion takes place in
the interior of the kiln and thereby obtain a greater heat in the interior.
The combustion chamber E¹ between the gas producer E and the kiln A is
constructed with a number of air passages or flues m for the supply of fresh air to
the combustion chamber E¹. These air passages m are built into the walls at the
sides and the top of the chamber so that the air passing through is heated to a
high degree before entering the combustion chamber so as not to cool down the
gases entering from the producer. Other air passages M are built into the wall of
the kiln which communicate with the passages.m. In addition to these if found to
be required air passages may also be formed in the arches.
The producer E is constructed of any suitable size or shape and the combustion
chamber E is as shown preferably immediately above it with the inlet passage D
leading to the kiln. The combustion chamber E' may however be placed at either

page_text: side of the producer or between it and the wall of the kiln if found more convenient
or desirable.
Openings for supplying solid fuel and air to the interior of the kiln may be
provided if desired but at present we do not consider either will be required.
To prevent an influx of cold air into the kiln through the cooling chamber B
while discharging the burnt lime we prefer to construct this chamber as shown
with a sliding delivery door which can be opened to G delivering a quantity of
lime to the bottom of the chamber and then closed during the operation of loading
so that during a greater portion of the time the bottom of the chamber is closed
and air is only admitted into and through the producer E and combustion
chamber E.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. In a kiln for burning limestone and other materials the combination with a
kiln and a gas producer (such as E) of a combustion chamber supplied with heated
air interposed between the producer and the kiln in which the gases and products
of combustion are brought to a white or incandescent heat before entering the kilo
substantially as and for the purpose described.
2. A kiln for burning limestone cement and other minerals constructed and
arranged substantially as described and shown.
Dated this 2nd day of November 1896.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.