Improvements in Stove Grates.
Year: 1892

page_text: Date of Application, 30th Sept., 1892
Complete Specification Left, 1st June, 1893-Accepted, 8th July, 1893
PROVISIONAL SPECIFICATION.
Improvements in Stove Grates.
I, JOHN EYRE RUSSELL Ironfounder Peel Foundry Derby do hereby declare
the nature of this invention to be as follows :-
My improvements in stove grates consist in constructing a movable canopy which
can be drawn out horizontally and can also be raised or lowered vertically to any
height, and which will also work horizontally at any of the different heights to
which it may be thought necessary to put it at.
The object of raising or lowering the canopy is to contract the opening between
the top of fire bars and the bottom of the ordinary fixed canopy and thus increasing
the draught of chimney and so prevent the chimney from smoking and the
advantage of being able to draw the canopy forward horizontally at any height is
that you can better regulate the depth of flue from front to back. The movable
canopies at present in use can only be moved in one direction that is altogether
horizontally or only vertically. In my invention the same canopy can be moved
both horizontally and vertically.
To carry out my invention cast on the interior front of a register stove or tile
stove two or more studs or projections according to the number of heights to which
it is intended that the canopy shall work at, in the present case I only mention two
heights so that there would be two studs on each side of the interior front. At the
top of this front is a plate either cast to the two upright legs of the front or
attached in any suitable way, this plate is to allow the movable canopy to pass
behind and to hold the top portion of the same in position. It may be at the front
of the interior or arranged at the top in any position so that it forms a guide for
the front of the movable canopy to work against.
I next provide a suitable front plate or canopy sufficiently long to cover up the
space between the bottom studs on the interior front and also to go a short distance
behind the plate at the top of the interior. At the back of the loose plate or
canopy I attach two side wings or plates of iron the height of the canopy and of a
sufficient width to cover the opening caused when the canopy is drawn forward
horizontally. The bottom of these side wings is slightly rounded to the radius
required for the canopy to work properly on the projecting studs of the interior
front. At the back of these wings are projections which catch against the studs of
inner front when the canopy is drawn out to its extreme limit and prevent it from
being drawn out altogether. At the bottom of the canopy at, the back is a loose
flap or valve which closes up the aperture of flue when the canopy is pushed back
against the interior front. It is also useful when the opening behind the canopy is
required to be larger or when it is thought desirable to work the stove with the
canopy closed, in that case by opening the valve a sufficient flue space is obtained
without drawing the canopy forward. The manner of working the improved
canopy is as follows:-To put the canopy in position the top of canopy is pushed
behind the fixed plate at top of interior front and the bottom is supported by the
side wings of canopy resting on the top studs at each side of interior front.
The back edge of canopy is kept in position by pressing against the front edge
of interior front when closed, and it is kept from falling forward by the top
of canopy at the front pressing against the back of the fixed plate at the top of
interior front, so that the bottom of canopy can be drawn out horizontally or
pushed back as the case may be, working on the two studs at each side of
interior front. By lifting the canopy off the top studs and lowering it to the
next pair of studs the vertical action is obtained and the canopy will also
work horizontally at any height. The advantage of this plan of a movable

page_text: canopy is that the back of the canopy forms a guide for the smoke and does
not allow it to escape through the joint usually formed at the top of all other
canopies working horizontally.
This movable canopy can also be adapted for use in cooking ranges.
Dated this 29th day of September 1892
COMPLETE SPECIFICATION.
Improvements in Stove Grates.
I JOHN EYRE RUSSELL, Ironfounder, of Peel Foundry, Derby in the County
of Derby 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 :-
This invention relates to what may be termed canopy grates, in which the canopy
is moved in or out horizontally, according to requirements, and the invention consists
in so constructing and arranging this canopy, that it may serve not only as a canopy,
but may be lowered to serve as a blower, when required, or as a blower and canopy
combined.
In carrying out this invention, I cast on the interior of front of stove, pairs of
studs or projections, according to the various heights at which it is intended that
the canopy shall work. The top plate of the front forms a guide for the front of
the movable canopy to work against.
The canopy
is sufficiently long to cover up the space between the bottom studs
on the interior of front, and also to go a short distance behind the top plate, and is
provided with two side wings, the height of the canopy, and of a sufficient width
to cover the opening caused when the canopy is drawn forward horizontally. At
the back of these wings are projections which catch against the studs when the
canopy is drawn out to its extreme limit, and prevent it from being drawn out
altogether.
At the back of the canopy, near its lower edge, is arranged a moveable flap or
valve, to close up the aperture of the flue when the canopy is pushed back flush
with the front. By using this flap or valve to extend from the back of the canopy
to the forwardly inclined fire-brick back of grate, a sufficient flue space will be
provided, when the valve is open, without drawing the canopy forward.
The advantage of this plan of movable canopy is, that the canopy will form a
guide for the smoke, and will not allow it to escape through the joint usually
formed at the top of all other canopies working horizontally. This movable
canopy can also be adapted for use in cooking ranges.
And in order that my invention may be clearly understood, I will now proceed
to more fully describe it, reference being had to the accompanying drawings, in
which,
Fig. 1 is a front elevation of a stove grate with my invention applied thereto,
and
Fig. 2 a central vertical section of the same, shewing the canopy in its lowest
position, and drawn out horizontally.
Figs. 3 and 4 are similar views of a stove grate, shewing the canopy adjusted in
its highest position.
Figs. 5 and 6, and Figs. 7 and 8, are similar views of stove grates, in which the
canopy is shown in its highest and lowest position respectively, and with the flue at
back closed by the rise of the flap valve.
Figs. 9, 10, 11 and 12 are details illustrative of the construction of the canopy.
Figs. 13, 14, and 15 are detail views of the flap valve.
Figs. 16 and 17 shew, detached, in plan and elevation, one of the plates forming
the canopy; and

page_text: Fig. 18 shows, in plan view, the parts forming the canopy with the valve in
position.
A A are the legs forming the sides of the front of the stone, and A¹ is a trans-
verse top plate, either cast with the legs or bolted thereto, forming the top of the
front. Projecting from the inner edges of the legs A. A, are pairs of studs B B,
for supporting the canopy C at different heights. This canopy C consists of a
plate of the width of the opening between the legs, and having sufficient depth to
cover up the space between the lower studs B and the transverse plate A', and to
pass up some distance behind the same. Backwardly-projecting wings D D are
secured to the canopy plate C at both sides (shewn at Figs. 9 to 12 in detail), of
sufficient width to cover up the side openings when the canopy is pulled out
horizontally. These wings are formed with curved bottom edges of suitable radius,
to facilitate the horizontal backward and forward motion of the wings on the
studs B B by which they are supported. The wings D have a projecting catch D'
formed at the rear, to limit their horizontal movement, by striking against the
studs B when the canopy is drawn forward.
The upper edge of the canopy plate C is formed with a flange or lug C¹, to fit
against the rebated edge A2 of the transverse plate A' (see Fig. 2), when the
canopy is in its lowest position. The upper part of the canopy C, in all its required
positions, has a tendency to press forward against the back of the transverse
plate A', thus forming a movable joint, the flange C¹, on the canopy C, and the
rebate A2, on the transverse plate A', preventing the escape of smoke at what may
be termed the movable fulcrum, and providing means of support, should the
canopy C be drawn off the studs B B by accident.
at
The canopy C, when supported on the lower studs B, can be adjusted horizontally
any desired distance from the fire-brick back E of the stove. When it is desired
to raise the canopy, it is simply lifted off the lower studs, placed on the upper
studs B B, and its position may then be adjusted horizontally, as before. To
enable the canopy to work to and fro in either position, the wings D D are recessed
at the sides, as at D2, to clear the upper studs, when the wings are resting on the
lower studs.
It has been usual, in what are known as movable canopy grates, for the firebrick
back of the grate to incline forward, so as almost to touch the lower edge of the
canopy, when it is pushed back, and thus practically close up the flue aperture.
With such an arrangement, it is obvious that it would be quite impossible to
work the grate with the canopy closed, as may be sometimes desired. It is also
possible, in such an arrangement, that the flue space, even when the canopy is
drawn out to its fullest extent, may not be sufficient to carry off the smoke, thus
rendering the provision of means for increasing the flue space desirable.
Now, in carrying out the present invention, I make the inclination of the firebrick
back E such as to leave a fair flue space between its upper edge and the canopy C,
when the canopy is pushed back, and I provide a movable flap or valve F, which is
pivotted, hinged, or otherwise movably attached to the canopy, to close up this
space when desired.
In the drawings, the flap or valve F is provided with journals F', which enter
socket bearings Ds in the wings D of the canopy. This flap or valve will serve to
regulate more or less the area of the flue aperture, whether the canopy is in or out,
and may be applied as well to a fixed, as to a movable canopy. This valve F is
provided with a handle F' (Figs. 5 and 6), by which it can be moved to open or
close the aperture.
It will thus be seen, that my improved stove may be worked with the canopy
closed, if desired, the draught being regulated by the valve F only.
It will be understood that when more than the two changes in the vertical
position of the canopy are desired, it will only be necessary to correspondingly
increase the number of the studs B B, at the various heights required, and to
provide the wings D with the requisite number of recesses to clear those studs
which are not at the time in use, as the canopy is moved back or forward. While

page_text: I prefer to support and move the canopy on studs cast on each side of the stove
front, it will be obvious that a similar action might be obtained by hanging the
canony on chains, hooks, or pivots, or other mechanical equivalent admitting of the
vertical and horizontal adjustment of the canopy.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The application to a register stove, of a canopy so arranged as to be capable
of moving vertically as well as horizontally, to serve as a canopy only, or a blower
only, or as a canopy and blower combined, as set forth.
2. The construction of the canopy and the means of supporting the same at
various heights, and open or closed, substantially as herein shewn and described.
3. In a register stove provided with a canopy, the combination with the canopy,
of a flap or valve, substantially as and for the purpose herein shewn and described.
Dated this 1st day of June 1893.
NEWTON & SON,
Agents for the Applicant.