IMPROVEMENTS IN GAS BURNERS FOR COOKING PURPOSES
Year: 1884

page_text: I, THOMAS REDMAYNE of 23 Upper Hanover Street Sheffield in the County of
York Gas Stove Manufacturer etc. do hereby declare the nature of my invention for
IMPROVEMENTS IN GAS BURNERS FOR COOKING PURPOSES to be as follows:-
My Invention relates to an Improved Gas Burner consisting of an upper and
under burner placed one over the other; and separated from each other by a
midfeather and Deflector placed between the two burners.
.
The upper burner may be used for boiling etc, and the under burner for
grilling etc, at one and the same time, or either burner may be used separately.
To carry out my Invention I take two circular rings (preferably cast-iron) and
of semi-tubular or other convenient section. Between these two rings I insert a
flat ring about of an inch thick, its inner and outer circumferences extending
slightly beyond those of the rings aforesaid. This ring has concentric circular
projections on its upper and under surfaces, which fit into recesses in the faces of
the rings above-named, and it acts as a midfeather or division-plate between the
two rings, and in conjunction with their internal surfaces forms two complete,
equal, and separate channels for the upper and under burners.
To increase the efficiency of the under burner for toasting, grilling etc, I form a
Deflector by extending the midfeather outwardly and inwardly for any convenient
distance, such extensions being bounded by circles concentric with those bounding
the midfeather. To obtain an enlarged heating surface the Deflector is corrugated
or grooved but sometimes I make it plain.
For the gas inlet to the upper ring I take a straight piece of the same section
and join it to the ring to form with it one continuous passage internally, and
preferably that the straight piece at its outer edge shall form a tangent to the
outer circumference of the ring. To the midfeather I join a piece of seini-circular
section (convex side downward) hollowing the midfeather on its upper surface as
far as convenient. This piece at its edges fits into the straight piece above-named,
and forms with it a continuous tube or inlet to the upper ring The inlet to the
under ring is made in the same manner, its tube forming a tangent to the circum-
ference on the opposite side of the diameter of the burner. The inlet tubes are
made of equal length, and approximately parallel to each other.
The upper and under rings have each one or more rows of perforations in the
usual manner, at which the mixture of gas and air burns,

page_text: To put the burner together I lay putty or cement in the recesses in the rings and
tubes, and then secure them to the midfeather by screws either passing through
the body of the burner, or through lugs or strips cast on the rings and tubes.
To shew one of the ways in which my compound burner may be applied I take
a moulding of convenient section, and arrange it as a rectangular frame,
proportioned to the size of the burner to be fixed in it. At a suitable distance
from the outer edge a recess is formed in the moulding of sufficient depth to receive
a removable grid. The Deflector has two lugs cast upon, and projecting beyond
its outer circumference; and the rectangular frame has recesses formed in its inner
sides to receive these lugs: the front of the frame also having recesses for the free
ends of the inlet tubes. These recesses are so arranged that the burner rests in
them symmetrically and their depth is so proportioned that the burner is at sucb
distance beneath the grid as to produce the best effect. I preferably screw the
compound burner to the frame, but so as to be readily removable.
:
The frame is supported at a suitable beight by four feet, one at each corner
Underneath the moulding at each side, and extending from and connecting either
foot at the front of the frame with the corresponding foot at the back, is a flat
transverse, vertical plate, having on its inner face several horizontal strips or
flanges, on which shelves or tins may be placed containing articles to be grilled or
toasted by the downward action of the flame from the under burner, such action
being concentrated and intensified by the Deflector immediately over the said
burner Along the front edge of the rectangular frame already described is
arranged a gas supply pipe of suitable diameter, and opposite to each of the recesses
that support the open ends of the inlet tubes a regulating tap is screwed into the
gas supply pipe, the outer end of the tap passing through and being secured to the
vertical strip which forms the front of each recess and the said outer end of
the tap is perforated to form a jet through which a current of gas is directed into
the centre of the inlet tube.
Each recess is cut away underneath, and a part of the under side of the inlet
tube which rests in it is also removed, or a hole is made in the under side of the
inlet tube, so that a correct proportion of air may be drawn in to mix with the gas
to be consumed in the burner.
It is evident, with my Invention, consisting of an upper and under burner,
with a deflector between, that boiling. or cooking above, and grilling etc. below
may be performed at one and the same time, or either burner may be operated
singly.
The removable grid may be lifted out of the recessed frame, and an oven
substituted for it, in which the usual cooking may be performed.
Although I have only described. one form of my Improved burners, and given
one application of them: I sometimes make a frame with one or more divisions,
and use an increased number of burners; the gas supply pipe being continued
along the front of the frame, and taps fixed along it to supply such increased
number of burners; such taps being secured to the gas supply pipe; the outer ends
of the taps passing through and being secured to the vertical strips of the recesses
as explained in the smaller rectangular frame first-named.
I do not limit myself to any particular form of burner, as the burners may be
made of any form to suit varying circumstances, and they may be applied to every
kind of gas cooking stove to which gas burners are usually applied.
Doted this Ninth day of Annil 1001

page_text: I, THOMAS REDMAYNE of 23 Upper Hanover Street Sheffield in the County of
York Gas Stove Manufacturer etc. do hereby declare the nature of my invention'
for IMPROVEMENTS IN GAS BURNERS FOR COOKING PURPOSES 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 Gas Burner consisting of an upper and
under burner placed one over the other; and separated from each other by a
midfeather and Deflector placed between the two burners.
The upper burner may be used for boiling etc. and the under burner for
grilling etc. at one and the same time, or, either burner may be used separately.
To carry out my Invention I take two circular rings (preferably cast-iron) and of
semi-tubular or other convenient section. Between these two rings I insert a flat
ring about of an inch thick, its inner and outer circumferences extending slightly
beyond those of the rings aforesaid. This ring has concentric circular projections on
its upper and under surfaces, which fit into recesses in the faces of the rings above-
named, and it acts as a midfeather or division-plate between the two rings, and in
conjunction with their internal surfaces forms two complete, equal, and separate
channels for the upper and under burners.
To increase the efficiency of the under burner for toasting, grilling etc. I form &
Deflector by extending the midfeather outwardly and inwardly for any convenient
distance, such extensions being bounded by circles concentric with those bounding
the midfeather. To obtain an enlarged heating surface the Deflector is corrugated
or grooved, but sometimes I make it plain.
For the gas inlet to the upper ring I take a straight piece of the same section and
join it to the ring to form with it one continuous passage internally, and preferably
that the straight piece at its outer edge shall form a tangent to the outer
circumference of the ring. To the midfeather I join a piece of semi-circular section
(convex side downward), hollowing the midfeather on its upper surface as far as
convenient. This piece at its edges fits into the straight piece above-named, and
forms with it a continuous tube or inlet to the upper ring. The inlet to the under
ring made in the same manner, its tube forming a tangent to the circumference
on the opposite side of the diameter of the burner."
The inlet tubes are made of equal length, and approximately parallel to each
other.
The upper and under rings have each one or more rows of perforations in the
usual manner, at which the mixture of gas and air burns.
To put the burner together I lay putty or cement in the recesses in the rings and
tubes, and then secure them to the midfeather by screws either passing through the
body of the burner, or through lugs or strips cast on the rings and tubes.
To shew one of the ways in which my compound burner may be applied, I take
a moulding of convenient section, and arrange it as a rectangular frame, proportioned
to the size of the burner to be fixed in it. At a suitable distance from the outer
edge a recess is formed in the moulding of sufficient depth to receive a removable
grid. The Deflector has two lugs cast upon, and projecting beyond its outer
circumference, and the rectangular frame has recesses formed in its inner sides to
receive these lugs; the front of the frame also having recesses for the free ends of
the inlet-tubes. These recesses are so arranged that the burner rests in them
symmetrically; and their depth is so proportioned that the burner is at such

page_text: distance beneath the grid as to produce the best effect. I preferably screw the
compound burner to the frame, but so as to be readily removable. The frame is
Underneath the
supported at a suitable height by four feet, one at each corner.
moulding at each side and extending from and connecting either foot at the front
of the frame with the corresponding foot at the back, is a flat, transverse vertical
plate, having on its inner face several horizontal strips or flanges on which shelves
or tins may be placed containing articles to be grilled or toasted by the downward
action of the flame from the under burner, such action being concentrated and
intensified by the Deflector immediately over the said burner.
Along the front edge of the rectangular frame already described is arranged a gas
supply-pipe of suitable diameter, and opposite to each of the recesses that support
the open ends of the inlet-tubes a regulating tap is screwed into the gas supply-
pipe; the outer end of the tap passing through and being secured to the vertical
strip which forms the front of each recess; and the said outer end of the tap is
perforated to form a jet through which a current of gas is directed into the centre
of the inlet-tube.
Each recess is cut away underneath, and a part of the under side of the inlet
tube which rests in it is also removed, or a hole is made in the under side of the
inlet-tube so that a correct proportion of air may be drawn in to mix with the gas
to be consumed in the burner.
It is evident with my Invention, consisting of an upper and under burner, with a
deflector between that boiling or cooking above, and grilling etc. below, may be
performed at one and the same time, or either burner may be operated singly.
The removable grid may be lifted out of the recessed frame, and an oven
substituted for it, in which the usual cooking may be performed.
Although I have only described one form of my Improved burners, and given
one application of them; I sometimes make a frame with one or more divisions, and
use an increased number of burners: the gas supply-pipe being continued along the
front of the frame, and taps fixed along it to supply such increased number of
burners; such taps being secured to the gas supply-pipe; the outer ends of the
taps passing through and being secured to the vertical strips of the recesses as
explained in the smaller rectangular frame first-named.
In order that my Invention may be more fully explained, I have appended a Sheet
of Drawings, with figures and letters of reference, the same letters indicating
similar parts in the several figures.
Fig 1 is a plan view of the Compound Burner.
Fig 2 is a section through the line A. B. C. D.
Fig 3 is an elevation showing the open ends of the inlet-tubes, and the edge of
the grooved or corrugated Deflector.
Fig 4 is a section of the inlet to the upper or boiling burner through the
line C. F.
Fig 5 is a section of the inlet to the under or grilling burner through the
line B. E.
In Fig 1, a, a, a 1, a 1, is the upper or boiling burner, and b 1, 61, b 1, 6 1, the
Deflector, which is ribbed, corrugated, or grooved.
In Fig 2. a, a, is the upper, c, c, the under or grilling burner, and b, b, the
midfeather separating the two burners. This midfeather has projections on its
upper and under surfaces, which fit into recesses in the upper and under burners as
shewn in the section, such projections and recesses being continued along the inlet-
tubes to their open ends as at j, j, k, k. Figs 3, 4 & 5. The midfeather b, b, the
deflector 1, 61, and the halves of the inlet-tubes b1, b1, Figs 1, 3 & 5, and
62, 62, Figs 3 & 4 (which forms the under half of the inlet-tube to the upper
burner) are preferably cast in one piece. The upper burner is made in one casting,
and the under burner (which is of the same forin as the upper) is also made in one
casting. The burners may be screwed to the deflector by means of lugs as in
Fig 1, (these lugs are purposely omitted in Figs 2 & 3 to avoid confusion) or by

page_text: screws passing through the body of the burner. I make a tight joint by first
placing cement or putty in the recesses of the burners before screwing the whole
together.
Sometimes I dispense with the "separate deflector, and construct a Compound
Burner of two burners placed one over the other, the edges of either of the burners
being extended inwardly and outwardly so as to form a Deflector, which may be
plain, ribbed, or grooved like the Deflector before described.
Figs 6 & 7 show an application of my Invention. A moulding or frame m, m,
has recesses i, i, i, i, in which the burner rests on its lugs b 3, 63, and its inlet-
ends a 1, 61, respectively. It may be screwed to the frame if desired. The frame
is screwed to, and supported at each side by, feet connected by a vertical plate (feet
and plate in one casting). This plate has strips 8, 8, cast on its inner side, on which
tins or shelves may be placed containing food to be grilled or toasted by the
downward action of the flame from the under burner, such action being concentrated
and intensified by the grooved or corrugated Deflector immediately over the said
burner. The frame has also a continuous recess on its inner sides h, h, h, h, in which
a grid may be placed to support a pan or kettle for use over the upper burner, or
the grid may be removed and an oven substituted for it in which the usual cooking
may be performed. The gas supply-pipe k, k, has taps t. t. for supplying each
burner. To enable the gas to take up the necessary amount of air for the purposes
of combustion, I sometimes cut away a portion of the under side of the inlet-tubes
as at d, d, Figs 4 & 5, or, I leave the inlet-tubes entire, and perforate the vertical
strips of each recess to which a feed-tap is secured, as at x, x Fig 6. The open
ends of the burner-inlets resting in these recesses are enlarged (see Fig 3) in order
to take up the necessary amount of air for combustion with the gas.
It will be observed that the upper burner Fig 1 has only one row of perforations,
(the under or grilling burner having two, Fig 3 shews its outer row) but when
plore power is necessary I make two rows in the upper burner as in Fig 7. I also
wish it to be distinctly understood that I do not limit myself to any particular form
of burner, as the burners may be made of any form to suit varying circumstances,
and they may be applied to every kind of gas cooking stove to which gas burners
are usually applied.
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;
I claim the construction of Compound Gas Burners, as herein before set forth and
described, and for the purposes specified.