IMPROVEMENTS IN STOVE GRATES
Year: 1885

page_text: I GEORGE WRIGHT of 4 Talgarth Road W and 113 Queen Victoria Street E.C
London in the County of Middlesex Stove Grate Manufacturer, do hereby declare
the nature of my invention for IMPROVEMENTS IN STOVE GRATES to be as
follows:-
To an ordinary Stove Grate front, having a projecting hood or Canopy, I apply a
Bivalve back, that is, the back metal of a grate known by that name, having an
inner and outer valve, that is portions of the top plate of the back made movable,
and hinged or resting on their lower edges, and used to regulate the draught and
reflect and radiate the heat from the fire into the room. The outer valve which in
ordinary Bivalve grates does not project beyond the inner front of the grate,
I protract at its upper edge, until it reaches the front plate of the projecting
canopy, thereby increasing the extent of its reflecting and radiating surface,. and
rendering the Stove Grate of which it forms a part, capable of being used either as
a Bivalve, or as an ordinary Canopy grate, thus combining the advantages of the
bi-valvular and canopied systems of construction as applied to Stove Grates, in
such a manner that they can be used separately, or together, as occasion may
require.
Also I protract the bottom grate upon which the fuel rests, bringing it forward
into the room, until it forms a table or platform in front of the fire, and upon this
platform I mount the projecting cheeks, or side bars, of the fire, which I fix
securely in their places, and between these fixed cheeks, or side bars, I place the
movable front bars or range, either by sliding them down vertically into groves,
or between studs, cast in, or upon, the side cheeks, or by dropping them into
sockets cast in the platform and arranged at suitable distances from its back edge,
or by simply placing them between the side cheeks or bars, upon the platform, in
such a manner that I can slide them backwards or forwards any distance within
the limits of the projection of the side bars and the platform upon which they
stand.
By these mean's I am enabled to increase or diminish the depth of the fire from
back to front, at will.

page_text: The hinder portion of the bottom of the fire place upon which the fuel rests,
I form of solid fire brick, so that when the front bars are pushed close up to it, a
small slow combustion fire is formed-The portion of the projecting table or plat-
form between the projecting side cheeks, and upon which the fuel also rests when
the front bars are drawn out, I perforate and construct as an open bottom grating,
so that when the front bars are brought out to their fullest extent, a large fire place
with an open bottom grating, or large free combustion fire place is formed.
The size of the fire can thus be varied in depth from front to back, and at the
same time, and by the same action, the speed of combustion can be regulated and
controlled.
By this means also I keep all the working parts connected with the fire place, in
front of the Stove grate, so that every portion of them can be readily got at when
required.

page_text: I GEORGE WRIGHT of 4 Talgarth Road W. and 113 Queen Victoria Street E.C.
London in the County of Middlesex, Stove Grate Manufacturer do hereby declare
the nature of my invention for IMPROVEMENTS IN STOVE GRATES and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
To an ordinary Stove grate front having a projecting hood or Canopy, I apply a
Bivalve back, that is the back metal of a Stove grate known by that name, having
an inner and outer valve, that is a portion of the top plate of the back metal made
movable and binged, or resting on their lower edges, and used to regulate the
draught and reflect and radiate the heat from the fire into the room.
This outer valve, which in ordinary Bivalve grates does not project beyond the
plane of the inner front of the grate, I prolong at its upper edge until it reaches
the front plate of the projecting canopy, thereby increasing the extent of its
reflecting and radiating surface and rendering the stove grate of which it forms a
part capable of being used either as a Bivalve or as an ordinary canopy grate, thus
combining the advantages of the Bi-valvular and canopied systems of construction
as applied to Stove grates, in such a manner that they can be used separately or
together as occasion may require.
Also I prolong the metal plate upon which the fire brick bottom rests, bringing
it forward until it forms a table or platform in front of the fire, and upon this
platform I mount the projecting cheeks or side bars of the fire, which I securely fix
in their places, and between these cheeks or side bars I place the movable front
bars or range, either by sliding them down vertically into grooves, or between
flanges or studs cast in or upon the side cheeks or by dropping them into sockets
cast in the platform and arranged at suitable distances from its back edge, or by
placing them free between the cheeks or side bars, so that they can be moved
backwards or forwards any distance within the limits of the projection of the side
cheeks.
The hinder portion of the fire place upon which the fuel rests I form of solid
brick, so that when the front bars are placed close up to it and at the back edge of
the platform, a small slow combustion fire is formed. The portion of the projecting
table or platform, between the projecting side cheeks, and upon which the fuel also
rests when the front bars are drawn out, I perforate and construct as an open
bottom grating, so that when the front bars are brought out to the front edge of
the platform, a large fire with an open bottom grating, or large free combustion fire
place is formed.
The size of the fire can be varied in depth from back to front, and the speed of
combustion controlled according to the distance the front bars are brought out.
By this arrangement I keep all the working parts connected with the fire place
in front of the stove grate so that every portion of them can be readily got at when
required.
The accompanying drawings and explanations shew the manner in which this is
accomplished.

page_text: Fig. 1 is the front of a Stove grate, elevation, constructed according to my
invention.
Fig. 2 is a longitudinal section of the same, shewing the outer valved closed
and the inner valve open, with range or fire bars placed at the front edge of the
platform to form a large free combustion fire place.
The arrows shew the course the smoke takes when the outer valve is closed and
the inner valve open.
Fig. 3 is plan of the same.
Fig. 4 is a longitudinal section of the same shewing both the inner and outer
valves open, with the range placed at the back edge of the platform, to form a small
slow combustion fire place.
The arrow shews the course the smoke takes when both valves are open.
Fig. 5 is a plan of the same.
A. A. A. A. A. is the outer valve of the Bivalve extended at its top edge until it
touches the front plate of the canopy, at or near its bottom edge.
B. B. B. is the projecting canopy.
C. C. C. is the inner valve.
D. D. D. D. D. is the movable range or fire bars.
E. E. E. E, E, is the table or platform.
F. F. F. F. F. F. F. F. are the fixed cheeks or side bars.
G G G G is the fire brick bottom of fire place.
Having now particularly described and ascertained the nature of my said
invention, and the manner in which the same is to be performed, I declare that
what I claim is-
First. The method by which a canopy grate can be converted into a Bivalve
grate with increased radiating and reflecting surface, substantially as hereinbefore
described.
:
Secondly. The method whereby the size of the fire can be increased or diminished,
and the speed of combustion of the fuel controlled, as set forth and explained in
the foregoing description and by the accompanying drawings.
Dated this twenty second day of March 1886