Improvements in Kilns.
Year: 1894

page_text: Date of Application, 12th June, 1894
Complete Spécification Left, 8th Mar., 1895-Accepted, 13th Apr., 1895
Improvements in Kilns.
We, JAMES WILLIAM O'CONNELL, Lime, Manufacturer, of 641, West 131st
Street, New York City, and BENJAMIN FRANKLIN HILLERY, Lime Manufacturer,
of 245, West 11th Street, New York City, United States of America, do hereby
déclare the nature of this invention to be as follows:-
According to our invention the boiler usually employed for generating steam to
supply the burners within a kiln is located within the arch of the kiln, or a boiler
is located within each arch of the kiln if desired, the boiler being so constructed.
that a damper may be used in connection with it to regulate the quantity of heat.
supplied to the boiler, means being provided whereby when the outer openings of
the arches are closed air may be supplied in proper quantities to the burners.
The kiln may be provided with a number of arches leading to the central
chamber of the kiln in which the rock to be burned is located. Each of the arches
is closed at its outer end ordinarily by doors two being usually employed at each.
arch. A boiler is located in one or in each of the arches of the kiln,,the front of
the boiler being quite close to the mouth or outer end of the arch in which it is
located.
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The boiler is usually and preferably of a circular type, comprising an inner shell,
and an outer shell the shells being so located and connected as to form a circular
water space and an inner chamber which extends through from front to rear of the
boiler. The inner chamber is open at its inner end and at its outer end is closed
preferably by means of doors.
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A steam dome is erected upon the top of the boiler communicating with the
water space, a recess being made in the arch to receive the dome, the recess in
which the dome is located being closed. The boiler may be supported in the dome.
of the arch in any approved manner; for example by resting upon a series of beams
and immediately beneath each beam, and likewise beneath the bottom plane of each.
arch, even if the boiler is not placed therein, an air-supply duct is formed in the
kiln, which communicates with the arch beneath which it is, placed at a point
adjacent to where the burner is located. The burner is located beyond the inner
end of the boiler and in order that the heat supplied to the boiler for the purpose of
generating steam may be effectually regulated, a damper is fitted in the central
chamber of the boiler, which chamber is ordinarily supported by an easel-like,
structure. The damper is loosely fitted to the inner contour of the chamber and
is pivoted upon its support so that it may be inclined to any desired, extent, or it.
may be moved to any desired point in the length of the chamber by drawing .the.
support forward or carrying or pushing it inward. By this means, it is evident that.
the beat generated for burning the limestone is utilized for generating steam in the
boiler or boilers employed..
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A
In the event of there being no heat from the burners or not sufficient to generate.
steam properly, as for example when the burning is first started, a fire may be made.
within its inner chamber. Primarily the boiler is used to generate steam to supply.
to the burner which burner burns commingled oil and steam or vapor, two pipes. one.
within the other being led to the burner through the outer doors of the arches and
likewise through the doors of, the boiler, one of the pipes being connected with the,
steam dome of the boiler. By this arrangement a separate boiler independent of

page_text: the kiln is not needed, and economy of fuel is obtained, since the heat in the kiln is
utilized to generate the steam.
Dated this 12th day of June 1894.
J. W. O'CONNELL,
B. F. HILLERY,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.
Improvements in Kilns.
We JAMES WILLIAM O'CONNELL, Lime Manufacturer, of 641 West 131st
Street and BENJAMIN FRANKLIN HILLERY, Lime Manufacturer, of 245 West
11th Street, both in the City of New York, United States of America do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
Our invention relates to an improvement in kilns and it has for its object to
enable the boiler usually employed for generating steam to supply the burners
within the kiln, to be located within the arch of the kiln, or whereby a boiler may
be located within each arch of the kiln, if desired, the boiler being so constructed
that a damper may be used in connection with it to regulate the quantity of heat
supplied to the boiler.
Another object of the invention is to provide a means whereby when the outer
openings of the arches are closed, air may be supplied in proper quantities to the
burners.
The invention consists in the novel construction and combination of the several
parts, as will be hereinafter fully set forth and pointed out in the claims.
Reference is to be had to the accompanying drawings forming a part of this
Specification, in which similar figures and letters of reference indicate corresponding
parts in all the views.
Figure 1 is a partial horizontal section through a kiln, illustrating the improve-
ment therein;
Figure 2 is a partial side elevation of a kiln, illustrating a boiler in position in
one of the arches; and
Figure 3 is a vertical section taken practically on the line 3-3 of Figure 2.-
The invention will be described as applied to a lime kiln, but it will be under-
stood that the invention is not limited to this description of kiln.
The kiln A may be of any suitable construction, that shown in the drawings being
of circular form, and provided with a number of arches B, leading to the central
chamber of the kiln in which the rock to be burned is located. Each of the arches
is closed at its outer end ordinarily by doors 10, as illustrated in Figures 1 and 3,
two doors being usually employed at each arch. A boiler C, is located in one or.in
each of the arches of the kiln, the front of the boiler being quite close to the mouth
or outer end of the arch in which it is located.
The boiler is usually and preferably of a circular type, comprising an inner
shell 12 and an outer shell 13, the shells being so located and connected as to form
a circular water space 14 and an inner chamber 15, which extends through from
front to rear of the boiler. The inner chamber 15, is open at ite inner end,
and at its outer end is closed preferably by means of doors 16, as illustrated in
Figure 2.
A steam dome 17, is erected upon the top of the boiler, communicating with the
water space 14, and a recess 18, is made in the arch in which the boiler is located

page_text: o receive the dome, which recess is closed by an outer plate 19, or in any other
approved manner. In Figure 2, this plate is omitted, as is likewise the outer
loor 10. The boiler may be supported in the dome of the arch in any approved
manner; in the drawings it is illustrated as resting upon a series of beams 20, and
immediately beneath each beam, and likewise beneath the bottom plane of each
arch, even if the boiler is not placed therein, an air-supply duct 21, is formed in the
kiln, which communicates with the arch beneath which it is placed at a point
adjacent to where the burner D, is located. The burner is located beyond the
inner end of the boiler, and in order that the heat supplied to the boiler for the
purpose of generating steam may be effectually regulated, a damper 22, is placed in
the central chamber 15 of the boiler, as shown in Figure 3, which damper is
ordinarily supported by an easel-like structure 23. The damper is loosely fitted
to the inner contour of the chamber 15, and is pivoted upon its support 23, so that
it may be inclined to any desired extent, or it may be moved to any desired point
in the length of the chamber by drawing the support 23 forward, or carrying or
pushing it inward. By this means it is evident that the heat generated for
burning the lime-stone is utilized for generating steam in the boiler or boilers
employed.
In the event of there being no heat from the burners, or not sufficient to generate
steam properly, as for example when the burning is first started, a fire may be made
within the chamber 15. It is likewise evident that the boiler or boilers may be
utilized to supply steam to any desired point or for any purpose. Primarily,
however, the boiler is used to generate steam to supply to the burner D, which
burner burns commingled oil and steam or vapor, two pipes, one within the other,
being led to the burner through the outer doors of the arches and likewise through
the doors of the boiler, one of the pipes being connected with the steam dome of
the boiler.
By this arrangement a separate boiler independent of the kiln is not needed, and
economy of fuel is obtained, since the heat in the kiln is utilized to generate the
steam. The outer end of the air duct 21, is preferably provided with a door 24,
which door may contain draft openings if in practice it is found desirable.
The boilers may be readily removed, and the kiln restored to the ordinary
condition, and wood may be burned in the kiln while the boilers are in position.
More lime can be made in a kiln when the boilers are placed in it as has been above
described, than it is possible to make in the old form of kiln, as the draft can be
created through the centre of the kiln by the steam from the boiler.
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,-
1. In a kiln, a boiler located in the arch thereof, as and for the purpose set
forth.
2. In a kiln, a boiler located in an arch of the kiln and comprising a fixture of
the kiln, as and for the purpose set forth.
3. In a kiln, doors closing the outer ends of the arches, and an air duct leading
into the rear or inner portion of the arch, and communicating with the atmosphere
outside of the kiln, as and for the purpose specified.
4. The combination, with a kiln and its arches, of a boiler permanently located
within an arch of the kiln, a damper regulating the supply of heat from the kiln to
the boiler, and means, substantially as shown and described, for closing the outer
end of the boiler, as and for the purpose specified.
5. The combination, with a kiln and its arches, of a boiler located in one of the
arches, means for regulating the heat contained within the kiln in its passage to
the boiler, and an air duct located beneath the boiler, in communication with the
outside atmosphere and likewise in communication with the arch, beyond the inner
end of the boiler, as and for the purpose set forth.
6. The combination, with a kiln and its arches, of a boiler located therein, the

page_text: body of the boiler comprising a water jacket and an inner chamber extending.
through from front to rear of the boiler, doors closing the outer end of the central
chamber of the boiler, a damper located within the said boiler chamber, and an air
duct located beneath the boiler, in communication with the outside atmosphere and
with the arch back of the boiler, substantially as shown and described, whereby the
heat of the kiln is utilized for generating steam for supplying the burners, or for
other purposes, as and for the purpose set forth.
Dated this 7th day of March 1895.
A. M. & WM. CLARK,,
53, Chancery Lane, London, Chartered Patent Agents.