Improvements in Fire Grates and in Appliances used with Fire Grates.
Year: 1899

page_text: J!
Date of Application, 31st Aug., 1899)
Complete Specification Left, 17th May, 1900-Accepted, 7th July, 1900
PROVISIONAL SPECIFICATION.
Improvements in Fire Grates and in Appliances used with Fire Grates.
We, GEORGE GORDON BRODIE and JAMES DAMREL PRIOR, both of The Eagle
Range and Gas Stove Company Limited, Catherine Street, Aston, near Birming-
ham, in the County of Warwick, Ironfounders, do hereby declare the nature of
this invention to be as follows..
Our invention consists of the improvements hereinafter described in fire
grates and appliances used with fire grates, our invention having reference in
part to fire grates of the kind described, represented, and claimed in the Speci-
fication of Letters Patent granted to us No 1792 of 1884
In order that the first part of our present invention may be the better under-
stood we remark that the patented fire grate referred to is provided at each side
with a series of hinged doors by which the front of the grate may be wholly or
partially closed for the purpose of regulating the draught and combustion in
the grate
11
1
The first part of our present invention has for its object to simplify the arrange-
ment and working of the said doors and this we effect in the following manner
Instead of employing hinged doors, we employ sliding doors moving hori-
zontally We use two or more doors, one above the other, at each side of the
grate, the said doors when in their closed position meeting vertically at the
middle of the front of the grate The upper pan or pairs of sliding horizontal
doors is or are used for opening and closing the space above the fire box of the
grate and the lower pair of sliding horizontal doors is used for 'closing the
front of the fire box of the grate Each pair or pairs of doors work inde-
pendently Each of the upper horizontally sliding doors 18 furnished along
its top edge with a fixed slide This slide is hung and travels upon a fixed
horizontal rail at the back of the canopy of the grate and to facilitate the motion
of the slide upon the said fixed rail it is provided with guiding rolleis or depres-
81ons which work upon the said rail These sliding doors are arranged so as to
be easily removed if necessary.
"
The bottom doors are supported and work upon a fixed rail and may be pro-
vided with slides and rollers as described with respect to the top doors When
the pairs of sliding doors are moved sideways or inwards so as to open the fire
grate they pass into recesses or boxes behind the sides of the grate and when
the said doors are moved forward or outwards they meet at the middle of the
front of the grate and close the grate
Our invention consists further in introducing air into the canopy of the fire
grate for ventilating the room For this purpose we use a jointed flap or slid-
ing plate or a hit or miss ventilator in the said canopy for regulating the quan-
tity of air passing through the canopy.
I
Our invention consists further in making the ashpans of fire grates in the
following manner In addition to the ordinary pan for receiving the ashes from
the bottom grating we extend the pan outwards so as to form an additional

page_text: compartment which is situated at the front of the grate and receives the ashes
falling between the front bars of the grate The said front compartment of
the ash-pan is divided longitudinally by an angular vertical division or divisions
into two or more parts, the said division or divisions concealing more or less
the ashes which may have fallen into the said front compartment of the ash-pan.
Dated this Thirty first day of August 1800
Improvements in Fire Grates and in Appliances used with Fire Grates.
We, GEORGE GORDON BRODIE and JAMES DAMREL I'RIOR, both of The Eagle
Range and Gas Stove Company Limited, Catherine Street, Aston, near Birming-
ham, in the County of Warwick, Ironfounders, do hereby declare the nature of
our invention and in what manner the same is to be performed to be particu-
larly described and ascertained in and by the following statement.-
-
Our invention consists of the improvements hereinafter described in fire
grates and appliances used with fire grates, our invention having reference in
part to fire grates of the kind described, represented and claimed in the Speci-
fication of Letters Patent granted to us No 1792 of 1884
In order that the first part of our present invention may be the better under-
stood we remark that the patented fire grate refered to 18 provided at each side
with a series of hinged doors by which the front of the grate may be wholly or
partially closed for the purpose of regulating the draught and combustion in
the grate
The first part of our present invention has for its object to simplify the arrange-
ment and working of the said doors and this we effect in the following manner.
Instead of employing hinged doors, we employ sliding doors moving hori-
zontally We use two or more doors, one above the other at each side of the
grate, the said doors when in their closed position meeting vertically at the
middle of the front of the grate The upper pain or pairs of sliding horizontal
doors is or are used for opening and closing the space above the fire box of the
grate and the lower pair or pairs of sliding horizontal doo19 is or are used for clos-
ing the front of the fire box of the grate Each pair or pairs of doors work inde-
pendently Each of the upper horizontally sliding doors is furnished along
its top edge with a fixed slide This slide is hung and travels upon a fixed
horizontal rail at the back of the canopy of the grate and to facilitate the motion
of the slide upon the said fixed rail it may be provided with guiding rollers or
depressions which work upon the said rail These sliding doors are arranged so
as to be easily removed if necessary.
The bottom doors are supported and work upon a fixed rail and may be pro-
vided with slides and rollers as described with respect to the top doors When
the pairs of sliding doors are moved sideways or inwards so as to open the fire
grate they pass into recesses or boxes behind the sides of the grate and when
the said doors are moved forward or outwards they meet at the middle of the
front of the fire grate and close the grate
This part of our invention is illustrated in Figures 1 to 7 both inclusive of
the accompanying drawings
Figure 1 represents in front elevation a fire grate closed by means of two
horizontally sliding doors at each side of the grate.

page_text: Figure 2 represents the said grate partly in front elevation and partly in
vertical section, one of the horizontally sliding doors namely, the left hand
upper door, being closed, the other upper door being in its partly open position
and the lower pair of doors being in their fully open position
Figure 3 represents the said grate in vertical section, drawn to a larger
scale than Figures 1 and 2, the doors being in theu closed position as in
Figure 1: Figure 4 is a vertical section through one of the box like recesses at
each side of the grate, Figure 5 is a sectional plan of the said fire grate,
Figure 6 represents in front elevation, longitudinal section and plan one of
the pair of upper doors and Figure 7 represents similar views of one of the
pair of lower doors.
Figures 4, 5, 6 and 7 are drawn to the same scale as Figure 3.
The same letters of reference indicate the same parts in the several figures
of the drawings.
a, a are the pair of horizontally sliding upper doors for closing the upper
part of the grate and b, bare the pair of horizontally sliding lower doors for
closing the fire box of the giate The upper doors a, a are provided with fixed
slides a, a cauying a pan of grooved rolleis a², a² By means of the said
slides a¹ and rollers a the upper doors a, a are hung 01 suspended upon a horı-
zontal ail at the back of the canopy of the fie giate. A box like recess
or opening e is made at each side of the grate into which box like recesses or
openings the sliding doors a, a pass when pushed side ways or inwards in the
direction of the allows in Figures 2 and 3 for the purpose of opening the
giate.
The rail c is provided with a stop at its middle so as to ensure the doors a, a
meeting at the middle of the grate when the said doors are diawn out for clos-
ing the giate, recesses a³, a' in the meeting edges of the said upper doors tak-
ing upon the stop
f
The lower part of doois b, b for closing the fire box of the gate are provided
with slides b, on the lower edges which slides work on a rail situated on
a level with the bottom of the file bais of the giate, the said doors passing
into and out of the box like recesses e, The doors b, b as well as the upper
doors a, a do not quite pass out of the box like recesses e when in then closing
position Figures 1 and 3 Stops, are provided on the lower doors b, b to
prevent the complete accidental withdrawal of the said lower doors from the box
like recesses at the sides of the grate. By preserving the inner ends of the
doors b, b in the box like recesses the doors are prevented from falling off the
ail f
Ring like projections g are provided on the fronts of the doors to facilitate
their motion on the respective rails c, f
Although we have shown the upper part of the gate as closed by a single
pan of doors and the fire box as closed by another pan of independent doois
we wish it to be understood that we may employ two pans of sliding doors for
the purposes described in place of the single pans represented
Our invention consists further in introducing an into the canopy of the fire
grate for ventilating the 100m For this purpose we use a jointed flap or slid-
ing plate or a hit or miss ventilator in the said canopy for regulating the quan-
tity of air passing through the canopy
Figure 8 represents in front elevation; Figure 9 11 side elevation and
Figure 10 m vertical section, a canopy for a fine grate provided with a jointed
flap ventilator constructed according to our invention. Figure 11 is a font
elevation of the canopy (part being bioken away) with the jointed flap turned
up 01 opened.
18 the canopy and is the 10inted flap of the same, m is the handle at the
1ight hand side of the canopy by the turning of which handle the jointed flap
18 opened (as indicated in dotted lines in Figure 10) for ventilating the room
The flap 18 pieseived in its open position by its own weight

page_text: Figure 12 is an elevation, Figure 13 a plan of rside and Figure 14 a
vertical section of a canopy with slotted underpart, the slots of which part
are opened and closed by a cross sliding plate provided with a knob or
handle n³
"
Figure 15 is an elevation; Figure 16 a plan of underside; Figure 17 a ver-
tical section and Figure 18 a section on the dotted liner, r Figure 17, of an
arrangement provided with what is technically termed a "hit or miss
"venti-
lator p in the under parts of the canopy The slotted plate of the "hit or
m188 ventilator P has a longitudinal sliding motion and when in one position
the slots in the said plate coincide with the cross slots in the underpait of the
canopy and thereby open the said under part of the canopy and when the said
plate is in its other position the slots in the one part are opposite the unslotted
parts of the other and the underpart of the canopy 18 thereby closed
By the arrangements herein before described the quantity of air passing
through the canopy may be regulated
Our invention consists further in making the ashpans of fire giates in the
following manne
In addition to the ordinary pan for receiving the ashes from the bottom
grating we extend the pan outwards so as to form an additional compartment
which is situated at the front of the grate and receives the ashes falling
between the front bars of the grate The said front compartment of the ash
pan is divided longitudinally by an angular division or divisions into two or
more parts, the said division or divisions concealing more or less the ashes
which may have fallen into the said front compartment of the ash pan.
This part of our invention is illustrated in Figures 19, 20 and 21 of the
accompanying drawings
Figure 19 represents in longitudinal vertical section, an ash pan made accord-
ing to our invention and Figure 20 19 a sectional plan of a fire grate to which
the said improved ash pan is applied
Figure 21 is a vertical section of a fire grate showing a modified form of
the ash pan hereinafter described
Referring to Figures 19 and 20, h 18 the back compartment of the ash pan
which passes under the bottom of the grate and receives the fine ash falling
through the bottom fire bars and is the front compartment which projects
some distance in front of the five box and receives embers falling through the
front fire bais of the grate The said front compartment ha has preferably an
inclined division i; or two or more of the said divisions which may be fixed or
loose in the compartment h, the said division having for its object to conceal
from view the ashes that have fallen into the front compartment of the ash pan.
The top of the back division of the front compartiment ³ meets or nearly
meets the front of the bottom of the grate and closes the space between the
bottom of the giate and the hearth
In the modified ash pan represented in Figure 21 the two compartments are
made separate from each other
By the use of the improved ash pans the separation of the rough ash from the
fine ash is facilitated and the hearth is preserved clear of ashes.
Having now particularly described and ascertained the nature of our inven-
11on and in what manner the same 18 to be performed, we declare that we claim
as our invention of "improvements in fine grates and in appliances used with
fine grates".
First. The addition to or combination with fire grates of horizontally slid-
ing doors and nails for supporting and guiding the slides of the said doors, and
a box or recess at each side of the fire grate for the sliding doors when pushed
side ways or inwards to pass into for the purpose and substantially as herein-
before described and illustrated in Figures 1 to 7 both inclusive of the accom-
panying drawings

page_text: Secondly; Making the canopy of the fire grate with a slotted underpart
and the combination therewith of a jointed flap or a sliding plate or a hit or
miss ventilator for ventilating the 100m substantially as herein before described
and illustrated in Figures 9 to 18 both inclusive of the accompanying drawings
Thirdly Making ash pans for fine grates with two compartments, either
combined or separated, the real compartment occupying a position under the
fire box of the grate and receiving the fine ash from the bottom of the grate
and the front compartment projecting from the front of the giate at such a
distance that the embers falling from the front fire bars shall be received in
the said front compartment substantially as and for the purposes herein before
described and illustrated in Figures 19, 20 and 21 of the accompanying drawings
Dated the Fifteenth day of May 1900
GEORGE GORDON BRODIE,
JAMES DAMREL PRIOR