IMPROVEMENTS IN GAS BURNERS
Year: 1877

page_text: LETTERS PATENT to George Bray, of Leeds, in the County of York, for the
Invention of IMPROVEMENTS IN GAS BURNERS."
PROVISIONAL SPECIFICATION left by the said George Bray at the Office of
the Commissioners of Patents on the 5th November 1877.
GEORGE BRAY, of Leeds, in the County of York.
BURNERS."
"IMPROVEMENTS IN GAS.
My Invention relates to gas burners which are wholly or partially composed of
one or more of the various kinds of clay, or earth and minerals used in the potter's
ware. This class of burners is known as the "non-corrosive burner."
The burners to which iny Invention relates are those having a slit across the head
for gas to pass through and issue from. These are chiefly of two kinds.
Firstly. Those which are commonly known as the "batwing" burners, and those
having the same kind of slit and also a peculiar hollowed-out formation in the
interior of the head, such burner being known as the "slit union jet burner," and
producing a flame similar in shape to that of the union jet burner. The slit union jet
burner has for many years been manufactured from brass, and recently of steatite in
its rock or unground state.
The first part of my Invention consists in hollowing out the head of the burner,
such burner being moulded from one or more of the various kinds of clay, or earths'
and minerals reduced to the form of clay, so as to produce, after being slit, the kind
of burner named above as the "slit union jet burner." The clay for these burners
may be of any suitable kind, and prepared or moulded in a more or less plastic or
dry state.
Secondly. My Invention further consists in cutting the slit, which operation I by
preference perform by means of a circular cutter, in any burner requiring such slit
and having been moulded from clay, as herein-before described.

page_text: Thirdly. My Invention consists in making cutters circular for cutting the slits
in the heads of the above-mentioned burners. These cutters being composed of
diamond, corundum, flint, or other suitable mineral substances in a more or less
pulverized state, and mixed with any suitable adhesive substance to cause the
adherence of the particles composing the cutter.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Bray in the Great Seal Patent Office on the 4th May,
1878.
GEORGE BRAY, of Leeds, in the County of York
BURNERS."
"IMPROVEMENTS IN GAS
My Invention relates to gas burners which are wholly or partly composed of one
or more of the various kinds of clay, or earth and minerals used in the potter's
ware. This class of burners is known as the "non-corrosive burners."
The burners to which my Invention relates are those having a slit across the head
for gas to pass through and issue from. These are chiefly of two kinds.
Firstly. Those which are commonly known as the "batwing" burners; and secondly,
those having the same kind of slit, and also a peculiar hollowed-out formation in
the interior of the head, such burner being known as the slit union jet burner, and
producing a flame similar in shape to that of the union jet burner. The slit union
jet burner has for many years been manufactured from brass, and recently of steatite
in its rock or unground state..
The first part of my Invention consists in hollowing out the head of the burner,
(such burner being moulded from one or more of the various kinds of clay, or eartlis
and minerals reduced to the form of clay), so as to produce, after being slit, the kind
of burner named above as the "slit union" jet burner. The clay for these burners
may be of any suitable kind, and prepared or moulded in a more or less plastic or
dry state.
Secondly. My Invention further consists in cutting the slit, which operation I by
preference perform by means of a circular cutter in any burner requiring such slit
and having been moulded from clay, as herein-before described.
Thirdly. My Invention consists in making cutters circular for cutting the slits in
the heads of the above-mentioned burners. These cutters being composed of
diamond, corundum, flint, or other suitable mineral substances in a more or less
pulverized state, and mixed with any suitable adhesive substance to cause the
adherence of the particles composing the cutter.
And in order that my Invention may be more completely understood, reference
is given to the accompanying Sheet of Drawings, and to the letters and marks
thereon.

page_text: Figures 4, 5, 6, and 7 shew different arrangements of burners constructed also
according to my Invention in various stages of manufacture.
Figures 8 and 9 are respectively a side elevation and section of cutter.
All the views except those of the cutter are enlarged for the purpose of more
clearly shewing the construction.
The burners may be entirely formed of clay, as shewn at Figures 1, 2, and 3, or
partially formed of that material, such part being shewn at Figures 5, 6, and 7
separately, and applied to a metal casing k at Figure +.
The first part of my Invention consists in having the head a hollowed out, as
shewn at b, such burner being moulded from one or more of the various kinds of
clay, or earths and minerals reduced to the form of clay. This burner after being
slit at c assumes the form known as the "slit union jet burner." The clay for
these burners may be of any suitable kind, and prepared or moulded in a more or
less plastic or dry state..
Secondly. My Invention consists in cutting the slit c, which operation I by pre-
ference perform by means of a circular cutter, shewn at Figures 8 and 9. Previous
to cutting the slit c I soft burn or bake the burner. This operation may be per-
formed in a furnace of a suitable construction, and the same as is used for com-
pletely burning or baking the burners.
I further construct burners of clay, as herein-before mentioned, having no hollow b
in the head, as shewn at Figures 4, 6, and 7. The operation for slitting these is
precisely the same as that described for those with hollow heads.
I hollow out the burner at b by an ordinary hollowing-out tool.
This operation
may be performed when the material forming the burner is in a semi-dry, dry, or
soft burnt, or baked state.
Figure 6 shews a burner previously to being slit.
Thirdly. My Invention consists in the construction of the cutter, such cutter
being composed of diamond, corundum, flint, or other suitable mineral substance in
a more or less pulverized state, and mixed with any suitable adhesive substance,
such as shellac or glue, to cause adhesion of the parts forming the cutter. The
ingredients are well mixed together to a suitable dough or putty-like consistency,
after which it is filled in moulds of the desired form and therein compressed, after
which they (the moulds containing the compressed material) are placed in a hot
oven and baked for a few hours; when cool the cutter is ready for use.
I would here remark that the form of the burner may be varied and modified,
both internally and externally, also that as to the cutters (although by preference
made circular, in which case an ordinary rotary motion is imparted by ordinary
means), I in some cases make a straight cutter of the herein-before mentioned
materials, to which for cutting purposes I impart a reciprocating motion, such
motion being obtained by ordinary means. The burner is in each case fixed or
placed in a suitable vice or holder. I would further remark that burners have been
moulded of clay, or earths and minerals used in the potter's ware, but the slit in
such burners has been formed in the mould. This has proved a very unsatisfactory
manner of forming the same.
Having now described the nature of the said Invention, and illustrated the same
by Drawings, I would have it understood that I do not limit myself to the exact
details or configuration of the parts I have explained and shewn, but what I claim
and desire to be secured to me is,-
First. Constructing gas burners, either moulded entirely of clay, or earths and
minerals reduced to the form of clay, as shewn at Figures 1, 2, and 3, or partially
formed of such material as shewn at Figures 4, 5, 6, and 7, the slit c being cut
therein, and either made with or without the hollowed-out part 6, substantially as
herein-set forth.
Second. The application of cutters, circular or otherwise, for producing the slit C,
substantially as herein set forth.

page_text: Third. The construction of cutters formed from the herein-before mentioned
ingredients, substantially as herein set forth.
In witness whereof, I, the said George Bray, have hereunto set my hand
and seal, this First day of May, in the year of our Lord One thousand eight
hundred and seventy-eight.
GEORGE BRAY. (L.S.)