An Improved Heat Generator and Fuel Economiser for use in Domestic Firegrates.
Year: 1897

page_text: Date of Application, 3rd Dec., 1897
Complete Specification Left, 2nd Sept., 1898-Accepted, 22nd Oct., 1898
PROVISIONAL SPECIFICATION.
An Improved Heat Generator and Fuel Economiser for use in
Domestic Firegrates.
I, WILLIAM SAMUEL FROST, Main Road, Sidcup, Kent, Manufacturer, do hereby
declare the nature of this invention to be as follows:-
An improved heat generator and fuel economiser. For the purpose of carrying
out my invention I construct or manufacture by casting, or by other suitable
methods, a framework of curved iron bars, or of other refractory material, which
when placed in an ordinary open fireplace or register stove shall, through the more
perfect combustion induced by means of an increased supply of heated air, generate
an intense heat, and also economise fuel by means of the curvature or formation of
the invention. The framework I construct of a series of curved firebars tapering
from front to back of a V shape and having lateral air spaces between the series
of bars. When fixed in position, the hollow of the framework facing outwards,
the top part of the framework will rest against the upper part of the back of a
fireplace, and the bottom of the framework will rest on the firebars of the grate,
and be held in position by means of a. nut and bolt or such other device as may be
considered necessary. I do not confine myself as to size, longth, thickness or
height of the framework, or place a limit as to the number of bars, nor of the
materials employed in constructing the same. Neither do I adhere to any par-
ticular curve. By means of my invention a considerable air space is provided at
the back and lower part of an ordinary fireplace or register stove (in which a large
proportion of fuel is usually wasted) and the heated air rapidly rising through
this space and passing through the interstices of the framework is brought into
contact with the fuel held in position by the framework thus producing a fire of
extreme incandescence and heat.
DIL:
A
1000
An Improved Heat Generator and Fuel Economiser for use in
Domestic Firegrates.
I, WILLIAM SAMUEL FROST, of Main Road, Sidcup, in the County of Kent,
Manufacturer, 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 an improved heat generator and fuel economiser for use

page_text: And in order that my invention may be thoroughly understood I now proceed
to describe the accompanying drawing thereof, reference being had to letters and
figures marked thereon.
Fig. 1, is a front elevation of the apparatus.
Fig. 2, is a side elevation with long dotted lines to indicate the firegrate.
Fig. 3, is a section of the inner bars.
In carrying out my invention I construct or manufacture by casting, or by other
suitable methods, a framework of curved iron bars, or of other refractory material
which when placed in an ordinary open fire place or registered stove shall, through
the more perfect combustion induced by means of an increased supply of heated
air, generate an intense heat and also economise fuel by means of the curvature or
formation of the invention.
The framework I construct of a series of curved firebars a tapering from front
to back of a shape and having lateral air spaces b between the series of bars.
When fixed in position as in Fig. 2, the hollow of the framework facing out-
wards, the top part of the framework will rest against the upper part of the back
of the fireplace c and the bottom of the framework will rest on the firebars of the
grate, and be held in position by means of a nut and bolt or such other device as
may be considered necessary.
I do not confine myself as to size, length, thickness or height of the framework,
or place a limit as to the number of bars, nor of the materials employed in con-
structing the some, neither do I adhere to any particular curve. By means of my
invention a considerable air space is provided at the back and lower part of an
ordinary fire place or registered stove (in which a large proportion of fuel is usually
wasted) and the heated air rapidly rising through this space and passing through
the interstices of the framework is brought into contact with the fuel held in
position by the framework thus producing a fire of extreme incandescence and heat.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
In an apparatus for generating heat and for economising the combination of the
parts constructed in the manner described in the above specification and illustrated
in the accompanying drawings.