Year: 1888

page_text: We GEORGE GORDON BRODIE of Catherine Street Aston near Birmingham in the
County of Warwick Ironfounder and JAMFS DAMBEL PRIOR of No 143 Isledon Road
Finsbury Park London in the County of Middlesex Manager do hereby declare the
nature of this Invention to be as follows
Our invention consists of the improvements in or addition to cooking ranges herein
after described by which improvements or additions the cooking range can at pleasure
be heated either with solid fuel as coal or coke or with gaseous fuel as a mixture of
coal gas or other inflammable gas and atmospheric air
Our improvements are particularly applicable to cooking ranges of the kind
known in commerce as the "Eagle" range but are also applicable to cooking ranges
generally
To the range as ordinarily constructed we make the following improvements or
additions In the interior of the oven we fix a gas pipe pierced with a series of small
holes the said pierced pipe constituting a gas burne We carry this pierced pipe
along each side and across the back of the oven along the lower angles of the oven
The outer ends of these pipes external to the oven are provided with gas and air inlets
through which coal or inflammable gas and air are respectively introduced into the
pierced pipe or burner The mixture of air and gas burns with a smokeless and non-
fuminous Hame as is well understood To the tap or stopcock of the gas supply pipe
a plate is connected which plate is so operated on when the gas pipe is turned that the
ratio between the air and gas is maintained whether a large or small stream of the
gaseous mixture is supplied to the burner By the cutting off of the air it the same
time as the gas access of cold air to the oven when the range is heated by coal or
solid fuel is prevented As the combustion of the gaseous mixture requires air in
addition to that mixed with the gas an opening is made in the oven door for the
admission of air the said opening having a door or flap by which the quantity of
air entering the oven can be regulated or wholly cut off when solid fuel is employed
The said door or Hap may be operated by connecting it with the handle of the gas

page_text: tap so that a greater or less amount of ur may be permitted to enter the oven is
itu or less mount of the combustible gaseous mixture is being burned By the
iri ingement last deserved the risk of explosion in the oven is voided
For boiling on stewing or for like operations one or more ring or circular burners
may be situated on the hot plite of the range These burners ue supported by
Thaped arms the cross heads of which ums take into and slide in vertical undercut
stips had to the coving plates forming the b ch of the range The sud burners
which rused or lowered it in the position to which they hive boon brought
desired the cross heads of the suppoihing rms may be provided with fixing screws
When not in use the ring burners may be rused so as to be immediately under the
plate chind the hot plite is in thit free for use in the ordinary way when the
1
inge is heated by the combustion of solid fuel
Dited this 19th day of Inna 1888
If

page_text: We GEORGE GORDON BRODIE of Catherine Street Aston near Birmingham in the
County of Warwick Iion Founder and JAMES DAMREL PRIOR of No 143 Isledon
Road Finsbury Park London, in the County of Middlesex, Manager do hereby
declare the nature of our invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement
Our invention consists of the improvements in or additions to cooking ranges
bereinafter described by which improvements or additions the cooking range can at
pleasure be heated either with solid fuel, as coal or coke, or with gaseous fuel is a
mixture of coal gas or other inflammable gas and atmospheric air
Our improvements are particularly applicable to cooking ranges of the hind
known in commerce is the "Eagle" range but are also applicable to cooking ringes
generally
To the range as ordinarily constructed we make the following improvements or
additions In the interior of the oven we fix a gas pipe pierced with a series of
small holes the said pierced pipe constituting a gis burner
We carry this pierced pipe along each side and across the back of the oven along
the lower angles of the oven
The outer ends of these pipos external to the oven are provided with gas and air
inlets through which coal or inflammable gas and air are respectively introduced into
the pierced pipe or burner The mixture of air and gas burns with a smokeless and
non-luminous flame as is well understood To the tap or stop cock of the gas supply
pipe a plate is connected which plate is so operated on when the gas tap is turned
that the ratio between the air and gas is maintuned whether a large or small stream
of the gaseous mixture is supplied to the burner By the cutting off of the air at
the same time as the gas access of cold ur to the oven when the range is heated by
coal or solid fuel is prevented
For boiling or stewing or for like operations one or more ring or circular burners
may be situated on the hot plate of the range These burners are supported by
T shaped arms the cross heads of which irms take into and slide in vertical undercut
strips fixed to the coving plates forming the back of the ringe The said burners
when raised or lowered retain the position to which they have been brought If desired
the cross heads of the supporting arms may be provided with fixing screws When
not in use the ring burners may be raised so as to be immediately under the plate
rack and the hot plate is in that case free for use in the ordinary way when the range
is heated by the combustion of solid fuel
We will now proceed to describe with reference to the accompanying Drawings the
manner in which our invention is to be performed
Figure 1 represents in elevation a part of a cooking range provided with the
improvements or additions constituting our invention, the said Figure 1 exhibiting

page_text: the air and gas arrangement for supplying the gaseous mixture to the burner within
the oven and also the ring or circulai burners on the hot plate of the range, Figure 2
1s plan of a portion of the ringo partly in horizont il section taken on the line A A
Figure 1, the said Figure 2 exhibiting the ring or circular burners and the sliding
cross head arrangement of the same
Figure 3 represents one of the ring or circular burners partly in elevation and
partly in section drawn to a larger scilo and exhibits the connection of the burner
with the gas supply pipe, the ur supply perture and the guide of the burner
Figure 4 represents a horizontal section of the oven of the range drawn to a larger
scale taken on the line B B Figure 1 and Figure 5 represents a vertical section taken
on the line F F Figure 1 of one of the gas cocks and gas and air supply boxes and
their appliances drawn to a larger scale
a 19
We will first describe the arrangement of the gas burner within the oven
the oven and b b is the gas burner within it The sud gas burner consists of two
pierced pipes each pipe being carried along one side of the oven and partly across
the back of the oven the closed ends of the two pipes of the burner meeting near
the middle of the said bick as seen in Figure 4 By the combustion of the giseous
fuel supplied to the burner bb the oven a cin be heated when solid fuel is not being
burned in the fire grate of the range
The parts for supplying the gaseous mixture of inflammable gas and atmospheric
air are constructed as follows -On the ends of the pipes 66 of the burner external to
the oven are ur and gas boxes cc in which the gis and air are mixed prior to
entering the pierced pipes or burner bb Each of the said boxes c is open at bottom
and is covered and uncovered by the plate or valve d having a knob d² at bottom
The plate or valve d is jointed to the plug e of the gas tapf the fixed body of the tap
carrying the perforated gas supply pipe 9 passing into the gas and air box c By
turning the plate or valve d aside as indicated in dotted lines in Figure 4 the bottom
of the gas and ur box c is opened and atmosphoric ar enters the said box, at the
same time the gas tap ef is opened and gas also enters the said box by the perforated
pipe and the gaseous mixture enters the burner bb at which it is ignited The
gas is supplied to the two stop-cocks e e by the vertical and horizontal gas supply
Pipes and t
By the arrangement described and represented the ratio between the
gas and an supplied to the boxes c, c is muntained whether a large or small stream of
gaseous mixture is supplied to the burner b, b By closing the plates or valves d, d
the supply of gas and ur is simultaneously cut off from the burner
opening
We will now describe the ring or circular burners on the hot plate of the range, on
which ring or cucular burners, pots or vessels can be heated when solid fuel is not
being used
The sud ring or circular burners are marked k, k in Figures 1, 2 and 3
Eich ring burner k is supported and carried by a hollow T shaped arm k²
into the burner the inner cross head of the said arm taking into and sliding in
the undercut guide m consisting of vertical strips fixed to the coving plate n forming
the back of the range The way in which the cross head of the shaped arm
works in the guide m is best seen in Figure 2 The burners k k when lowered for
use are supported on the hot plate by feet on their underside as soen in Figures 1 and 3
and when the burners are raised out of use as represented with respect to the middle
burner in Figure 1 the sud burners retain the positions to which they have been
brought, but the cross heads may be provided with fixing screws When rused
the burners are situated immediately under the rich plate p and the hot plate is then
free for use in the ordinary way when the range is heated by the combustion of solid
fuel, 9 is the gas supply pipe for each circular burner the several pipes q being
connected to the principal gas supply pipe / Eich pipe 9 is furnished with a
stop cock for regulating the gas to or shutting it off from the burner When
the burners k, k are lowered onto the hot plate the open end of each hollow arm k³
is brought opposite the open end of the gas supply pipe 9 and when the tap of the
burner is opened gas mixed with air supplied through the air aperture s on the under-
side of the rm enters the burner as will be understood by an examination of
Figure 3.

page_text: Having now particularly described and ascertained the nature of our invention and
the manner in which the same is to be performed we declare that we claim as our
invention of "Improvements in or additions to cooking ranges
22
First-The combination with or addition to the ovens of cooking ranges of gas
burners and appliances connected therewith for supplying a mixture of gas and air
to the said burners and for maintaining the ratio between the supply of gas and air
whether a large or small stream of the gaseous mixture is supplied to the burner sub-
stantially as herein before described and illustrited in the accompanying Drawings
Secondly-The combination with or addition to cooking ranges of the vertically
sliding ring or circular burners for heating pots or vessels on the hot plate of the
range, the said ring or circul ir burners together with their guides and gas supply pipes
being constructed and combined substantially as herein before described and illustrated
in the accompanying Drawings