Improvements relating to Steam Generators.
Year: 1895

page_text: This Print is in accordance with the Original Specification as it stands alter
Amendment (under Section 11 of the Patents, &c., Act, 1883), as required by
the decision of the Comptroller General of the 20th day of November 1896.
TROYINIONAL DIVIFICATION.
Improvements relating to Steam Generators.
I, TOM TAYLOR, of 31 Royal Exchange, Manchester, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be
as follows:-
--
My present invention, which relates to improved means for collecting the heated
proceeds of combustion passing from the furnace to boiler flues and the like and
conducting such heat to the water through such boiler or like flue plates, consists
essentially in providing the flues and like parts with a novel form of lining
containing a particular magnesia porous or other suitable form of fire-brick
material in the manner hereinafter indicated. By the use of a lining so formed I
find that greater heat is gathered and conducted to the water or contents of the
boiler or similar chamber than is the case where absorbing and conducting devices
composed wholly of metal are employed.
According to my invention I form hollow casings of cast iron or other metal and
which hollow parts I afterwards fill in with magnesia porous or other suitable form
of firebrick material. The metal casings may be made in such forms as are best
suited to the situation they are designed to occupy. For example for boiler and
like flues they may be formed in strips of approximately rectangular section or
with sloping sides with an aperture passing completely through them into which
the firebrick material as aforesaid is placed. Or the casings may be formed in
cube or brick-like shape, hollow and filled with firebrick. In all cases the portions
of the linings projecting toward the zones of greater heat may be more or less
rounded or cone-shaped or they might be approximately triangular in cross-section
and their bases, when intended for use in boiler flues or other places with rounding
surfaces, may correspond to the curve of such flue or other plates. The strips or
cubes may be self-fitting or interlocking or they may be otherwise suitably held in
position.
In some cases I may also employ a bridge and baffle composed of a hollow metal
casing filled with firebrick material as aforesaid.
Dated this 20th day of June 1893
A. F. SPOONER,
124 Chancery Lane, W.C., Agent for the Applicant.

page_text: Improvements relating to Steam Generators.
I, TOM TAYLOR, of 31 Royal Exchange, Manchester, in the County of
Lancaster, Engineer, 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 :-
My invention relates to steam generators and comprises improved means for
collecting the heated proceeds of combustion passing from the furnace to boiler
flues and the like, and conducting such heat through such boiler or flue plates to
the water or other liquid or material to be heated.
My improvements consist essentially in providing the flues and like parts with a
novel form of lining consisting of lining-pieces or blocks faced with, or containing,
a core of a particular or special magnesia porous or other suitable form of fire-
brick material in the manner hereinafter indicated. By the use of lining-pieces or
blocks so formed I find that greater heat is gathered and conducted to the water
or contents of a boiler or the like or other furnace chamber than is the case where
absorbing and conducting devices composed wholly of metal are employed.
In the accompanying drawings
Figure 1, is a perspective view illustrating one form of my improved lining-
pieces or blocks.
Figure 2 is a horizontal section,
Figure 3 is a vertical section, and
Figure 4 is a transverse section showing an application of my improved form of
lining-pieces or blocks to a double flue or Lancashire boiler.
Like letters indicate corresponding parts throughout the drawing.
A is the shell of the boiler; B, B are the flues; C, C are the furnaces;
D, D are the ash pits; and E is the setting thereof.
According to my invention I line the whole or a suitable portion of the flues B
with lining-pieces or blocks a which are formed of casings of cast iron or other
metal having suitable recesses or hollows provided therein which I fill up with a
core composed of magnesia porous or other suitable form of fire-brick material b.
For boiler and like flues I prefer to form my improved lining-pieces or blocks a
of the shape shown in the drawing; but the said lining-pieces or blocks may be
constructed in cube or brick-like shape, and hollow and filled with fire-brick or
equivalent material. In all cases however the inner or those portions or surfaces
of the said lining-pieces or blocks a exposed to the heat of the furnace should be
more or less rounded or cone-shaped, or made approximately triangular in
transverse section, or otherwise formed so as to project towards the zones of
greater heat. When used in boiler flues or other places with rounded surfaces
the bases of the lining-pieces or blocks a are preferably formed to correspond to
the curve of such flue or other plates. In some instances I so form the lining-
pieces or blocks a that they will be self-fitting or interlocking, or I provide other
means for holding them firmly in position in the flue or other chamber.
I prefer to employ in a steam boiler or the like, a bridge or baffle composed of
fire brick blocks c having recesses or hollows filled with magnesia fire-brick or
equivalent material d. The bridge or baffle c may be constructed in two parts, as
shown, so as to provide an air space or passage e communicating through the air
passage or inlet f, which passes along the bottom of the ash pit D, with the
exterior. By this means the air impinging upon the incandescent magnesia
fire-brick will form oxygen gas. I may however dispense with the above
mentioned air spaces or passages. I sometimes form that part of the back or

page_text: rearnost portion of the bridge situated below the fire-bars of metal, the remaining or
apper portion being built of magnesia fire-bricks or fire-bricks having recesses
or hollows filled with magnesia material.
My improved lining-pieces or blocks may by obvious modifications be adapted
to other descriptions of flues or chambers.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I am
aware of the
Specification of Letters Patent No. 19249 of 1893 granted to Edward Makin
Junior, and I lay no claim to anything described and claimed therein, but I declare
that what I claim is :-
1. A metallic lining-piece or block having a facing or core of magnesia porous
or other suitable form of fire-brick material and whereby heat is absorbed from
the fire and conveyed or imparted to the water or other matter to be heated,
substantially as described.
2. A bridge or check for a steam boiler or the like constructed with magnesia
bricks or blocks or bricks or blocks cored with the said material, or partly of
either of the latter and partly of metallic bricks or blocks faced or cored with
magnesia or equivalent fire-brick material or otherwise, with or without the
provision of air spaces or passages, substantially as described.
3. An improved lining-piece or block for steam boiler flues or the like con-
structed substantially as described with reference to Figure 1 of the accompanying
drawing.
4. The improved bridge or check for steam boiler flues or the like constructed
substantially as described, and as illustrated in Figures 2 and 3 of the accompanying
drawing.
5. A boiler fitted with a lining for collecting the heated proceeds of combustion
and passing same through the flue plates substantially as described and as
illustrated in Figures 2,.3 and 4 of the accompanying drawing.
Dated this 18th dox of Anil 1806
A. F. SPOONER,
124, Chancery Lane, W.C., Agent for the Applicant.