IMPROVEMENTS IN GAS BURNERS FOR COOKING AND HEATING 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 AND HEATING PURPOSES to
be as follows:-
I form my burner of a hollow chamber, of an annular, straight, or other shape
as may be required, and provided with an inlet, or inlets for the admission of a
mixture of gas and air.
On the upper and under sides of the burner, and cast with it I arrange a
number of circular bosses or projections, in such a manner that each boss on the
upper side of the burner is directly over, and opposite to, the one on the under
side of the burner.
Each of these bosses is perforated with a circular hole; the hole in the upper
boss being slightly larger than the hole in the opposite boss on the under side of
the burner; but having one axis common to both holes, and to both bosses.
In each of the under bosses I fasten a tube of outer diameter equal to the
diameter of the hole in the said boss. Each of these tubes when fastened stands
vertically, passing up through the hollow chamber already named, and the upper
boss; until the upper end of the tube is level with the upper surface of the said
boss. The outer circumference of the tube being slightly less than the hole
through the upper boss, an annular space is formed between the two; and through
this space the mixture of gas and air issues from the chamber and burns at the
upper surface in a ring of flame.
The tube being open to the air at both ends, a current of air rushes up the
inside of the tube to the ring of flame, and makes the combustion most efficient.
Gas enters the hollow chamber of the burner by the inlet or inlets already
named; to which inlet or inlets a gas tube or tubes are affixed; such inlet or inlets
immediately next the gas tube having a portion cut away to allow the gas at its
entrance to draw in the correct proportion of air to mix with it for the purposes
of combustion.
The hollow chamber with its inlet or inlets I make preferably of cast-iron,
casting it usually in either one, or two parts.
Instead of fastening a tube in each of the under bosses (as described) I some-
times cast the tubes with the under part of the burner
Dated this first day of October 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 any invention
for IMPROVEMENTS IN GAS BURNERS FOR COOKING AND HEATING PURPOSES and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
I form my burner of a hollow chamber, of an annular, straight or other shape,
as may be required, and provided with an inlet or inlets for the admission of a
mixture of gas and air.
On the upper and under sides of the burner, and cast with it I arrange a number
of circular bosses or projections, in such a manner that each boss on the upper
side of the burner is directly over and opposite to the one on the under side of the
burner. (These bosses may be few or many as may be desirable) Each of these
bosses is perforated with a circular hole; the hole in the upper boss being slightly
larger than the hole in the opposite boss on the under side of the burner, but
having one axis common to both holes and to both bosses.
In each of the under bosses I fasten a tube of outer diameter equal to the
diameter of the hole in the said boss.
Each of these tubes when fastened stands vertically, passing up through the
hollow chamber already named and the upper boss, until the upper end of the tubo
is level with the upper surface of the said boss. The outer circumference of the
tube being slightly less than the hole through the upper boss, an annular space is
formed between the two; and through this space the mixture of gas and air issues
from the chamber, and burns at the upper surface in a ring of flame.
The tube being open to the air at both ends, a current of air rushes up the
inside of the tube to the ring of flame and makes the combustion most efficient.
The number and diameter of the tubes regulate the power of the burner; thus
I sometimes make a burner with as few as two or three tubes; or, otherwise
I increase the number of the tubes according to the power of the burner that may
be required Gas enters the hollow chamber of the burner by the inlet or inlets
already named to which inlet or inlets a gas tube or tubes are affixed: such inlet
or inlets immediately next the gas tube having a portion cut away to allow the
gas at its entrance to draw in the correct proportion of air to mix with it for the
purposes of combustion.
:
The hollow chamber with its inlet or inlets I make preferably of cast-iron ;
casting it usually in either one or two parts Instead of fastening a tube in each
of the under bosses (as described) I sometimes cast the tubes with the under part
of the burner,
In order to more particularly explain my Invention, I have hereto appended two
Sheets of Drawings with references. In Sheet 1, Fig 1 is a plan of a hand or
boiling burner, Fig 2 an elevation, and Fig 3 a section through the centre of the
burner. The same references denote similar parts in the three figures. C is the
hollow chamber Tis the inlet tube cut away at t, t, to enable the gas to mix
with and take the air along with it into the chamber C. Gas enters the tube
through the nozzle n. n. a, a, are the tubes fastened into the bosses b. b., and
passing through the bosses c. c. p. p. are the small annular passages or spaces
through which the mixture of gas and air issues (as shown by the arrows) and

page_text: burns at the upper surface in a ring of flame. An arrow also indicates the current
of air up the tube.
T. T. are rests to support a pan or kettle etc. Fig 4 is a burner
resting in a frame. This burner has two rows of tubes Fig 5 is an elevation of
the burner with one end in section (the section is taken on the line l, Fig 4) This
burner is cast in two parts: the letters jj indicating the joint line. I fill this
joint with putty or cement before screwing the parts together. m is the gas nozzle.
The hand burner shown in Figs 1. 2. 3. is cast in one piece, but either method may
be employed; thus I sometimes make Fig 1 in two parts in the manner that I
have shown Fig 5; and otherwise I make Fig 5 in one casting as I here show Fig 1.
Sheet 2 illustrates two applications of my Invention to the heating of ovens
Fig 6 is a plan of an oven burner Fig 7 an elevation of a portion of one side and
Fig 8 an enlarged section through two opposite bosses. The construction of this
burner is the same as already described, except that the inlet tube T is a separate
piece, and is fastened into the burner at ff. To protect the flames as much as
possible from splashes of fat etc. in cooking, I turn the burner on its side so that
the tubes are horizontal instead of vertical, or they may be placed at any other
desired angle. The burner is lighted at the inside bosses i. i. (This is clearly
shown by the arrows in the enlarged section Fig 8) Fig 7 shows the position of
the burner at the bottom of the oven; a strip 8. 8. nearly following the outline of
the bosses (see also Fig 7a) affords the flames additional protection.
In Figs 9. 10. 11. the burner is applied underneath the oven; the tubes may be
either vertical, at any desired angle or horizontal: here they are horizontal as in
Fig. 6. but the inlet tube joins the burner preferably at or near the centre d. d.
Fig 11. A part of the plate (preferably cast-iron) forming the bottom of the oven
is removed, so as to allow the burner to be lifted in or out when required and also
for access to it for lighting. The burner has projections h. h. Fig 11. resting in
corresponding recesses. The burner is lighted at the outside bosses o. o. Fig 11.
A suitable cover-plate c. p. Fig 9. preferably of cast or wrought iron fits in the
recess in the oven bottom, and has. a projection at its front end to lift it out by
when necessary This plate when in position forms a level uniform surface with
the oven bottom.
Sometimes I make this cover of plate-glass, which allows the burner to be
seen without removing the cover-plate. At a suitable distance from (and fastened
to) the sheet iron oven, I arrange plates x. x. of cast-iron with a greater or less
number of ribs y, y. on their inner surfaces, such ribs touching the sheet iron
oven and thereby forming a number of flues or channels commencing as near
as may be to the flames of the burner and keeping the heat immediately in
contact with the oven; the said Blues terminate in the common outlet flue at y.
Fig 10. The space next the outer casing Figs 10 and 11. is filled with a non-
conducting material to prevent the loss of heat.
I wish it to be distinctly understood that I do not limit myself to the forms of
burners that I have given, nor to the applications that I have described; but I also
make my burners in other forms to suit varying circumstances, and I apply them
to all cooking and heating purposes to which burners may be 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
The construction of Gas Burners for Cooking and Heating purposes substantially
as hereinbefore set forth and described.