IMPROVEMENTS IN BURNERS FOR BURNING A MIXTURE OF GAS AND ATMOSPHERIC AIR
Year: 1876

page_text: LETTERS PATENT to Charles Stephen Robinson, of Leicester, in the County of
Leicester, for the Invention of " IMPROVEMENTS IN BURNERS FOR BURNING
A MIXTURE OF GAS AND ATMOSPHERIC AIR."
Sealed the 2nd March 1877, and dated the 8th September 1876.
PROVISIONAL SPECIFICATION left by the said Charles Stephen Robinson at
the Office of the Commissioners of Patents on the 8th September 1876.
CHARLES STEPHEN ROBINSON, of Leicester, in the County of Leicester. "Iм-
PROVEMENTS IN BURNERS FOR BURNING A MIXTURE OF GAS AND ATMOSPHERIC
AIR."
This Invention has for its object the construction of Bunsen or atmospheric air
and gas burners in such a manner that the quantity of atmospheric air admitted to
the burner shall be better proportioned to the quantity of gas consumed than is
usually the case, and that the emission of gas and admission of air shall be effected
at one operation by the partial turning of the handle of the gas cock, which is so
arranged as to serve as an air valve as well.
The Invention consists in forming a chamber, in which is fixed the barrel of a
gas cock, the connection extending to it below the chamber, so as to allow of it
being screwed on to any ordinary gas fitting. Into the top of the barrel of the cock
is screwed a gas burner, which extends a little above the chamber, and this burner
is enclosed in a tube open at the top, and some four or five inches (more or less) in
length. In the front of the chamber three holes are cut, through the centre one of
which the plug of the cock passes into the barrel. Between the handle and the
plug is fixed a disc, which when the gas is entirely shut off closes the air way to
the chamber, but as the disc is furnished with two holes the partial turning of the
handle will cause the holes in the disc to gradually correspond with the holes in the
chamber, and thus admit the free passage of air. It will be seen that by properly
arranging these holes the amount of gas emitted and the quantity of air admitted
into the combustion tube may be very nicely proportioned by the one operation of
turning a single handle.
A modification of the foregoing consists in placing the gas cock below the chamber,
and attaching to the plug a disc, which on the handle being partially turned either
opens or closes a hole in the chamber.

page_text: Another modification consists in making the upper part of the plug nearly as
large in diameter as the chamber in which it works, the chamber having a slot in it,
through which the handle to the plug passes. An indent is cut in the plug cor-
responding to the slot, so that when the handle is partially turned the opening or
free way for air into the chamber is opened or closed in proportion to the gas
emitted from the burner.
A further modification consists in dispensing with the chamber, as before
described, by lengthening the combustion tube below the gas burner sufficiently to
permit of slots being cut in the said tube, one to allow of the passage of the handle,
and the other two for the admission of air. In this case the combustion tube has
an inner sleeve attached to the plug, and has two slots in it corresponding to those in
the outer tube Being fixed to the sleeve the handle will on being partially turned
produce the same effect as before described.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Stephen Robinson in the Great Seal Patent Office on the 8th
March 1877.
-
CHARLES STEPHEN ROBINSON, of Leicester, in the County of Leicester. " IM-
PROVEMENTS IN BURNERS FOR BURNING A MIXTURE OF GAS AND ATMOSPHERIC
AIR."
This Invention has for its object the construction of Bunsen or atinospheric air
and gas burners in such a mannor that the quantity of atmospheric air admitted to
the burner shall be better proportioned to the quantity of gas consumed than is
usually the case, and that the emission of gas and admission of air shall be effected
at one operation by the partial turning of the handle of the gas cock, which is so
arranged as to serve as an air valve as well.
The Invention consists in forming a chamber, in which is fixed, the barrel of a gas
cock, the connection to it extending below the chamber so as to allow of it being
screwed on to any ordinary gas fitting. Into the top of the barrel of the cock is screwed
a gas burner, which extends a little above the chamber, and this burner is enclosed
in a tube open at the top, and some four or five inches (inore or less) in length. In
the front of the chamber three holes are cut, through the centre one of which the
plug of the cock passes into the barrel. Between the handle and the plug is fixed a
disc, which when the gas is entirely shut off closes the air way to the chamber, but
as the disc is furnished with two holes the partial turning of the handle will cause
the holes in the disc to gradually correspond with the holes in the chamber, and
thus admit the free passage of air. It will be seen that by properly arranging these
holes the amount of gas emitted and the quantity of air admitted into the combustion
tube may be very nicely proportioned by the one operation of turning a single
handle.
A modification of the foregoing consists in placing the gas cock below the chamber,
and attaching to the plug a disc, which on the handle being partially turned either
opens or closes a hole in the chamber.
Another modification consists in making the upper part of the plug nearly as
large in diameter as the chamber in which it works, the chamber having a slot in
it, through which the handle to the plug passes. An indent is cut in the plug
corresponding to the slot, so that when the handle is partially turned the opening or
free way for air into the chamber is opened or closed in proportion to the gas emitted
from the burner
A further modification consists in dispensing with the chamber, as before described,
by lengthening the combustion tube below the gas burner sufficiently to permit of
slots being cut in the said tube, one to allow of the passage of the handle, and the
other two for the admission of air. In this case the combustion tube has an inner

page_text: sleeve attached to the plug, and has two slots in it corresponding to those in the
outer tube. Being fixed to the sleeve the handle will on being partially turned.
produce the same effect as before described.
In order that the foregoing may be more easily understood Drawings are attached
hereto, of which the following is a description :-
-
Fig. 1 is a front elevation of the arrangement of burner first herein described, A
being the handle of the cock, and B the disc having air holes C, C, which correspond
with holes of the same size in front of the chamber D; E is the inlet for gas; and
F, the combustion tube.
Fig. 2 is a side elevation, the chamber D and combustion tube F being in
section, for the purpose of showing the internal arrangement. The gas enters at E,
and passes through the cock G to the burner H; at the same time air enters through
the holes C in the disc B, and through the holes I in the front of the chamber D It
will be seen that on turning the handle A the gas and air ways are opened or
closed at the same time in equal proportions.
Fig. 3 is a modification in which the gas enters at E, passes through the cock G
to the burner H, while air enters by the hole J. Attached to the plug of the cock
is an arm carrying a disc K, which may be made by turning the handle A to open
or close the air way in proportion to the quantity of gas allowed to pass to the
burner.
Fig. 4 is a modification, wherein gas is admitted at E on one side and below the
chamber into which the air flows. In this case the plug at its upper part L is
nearly of the same diameter as the chamber in which it works, as will be scen on
looking at Fig. 5, which is a plan through Y, Z, Fig. 4. There is however an indent
cut in the plug at M, Fig. 5, and this indent corresponds with a slot in the side
of the chamber. A handle A is passed through the slot, and fixed to the upper part
of the plug. In this way, as in the previous arrangements, on turning the handle A
the orifice for the admission of air is opened or closed in the same proportion and at
the same time as that for opening or closing the gas way.
Fig. 6 is another modification, in which the gas is admitted at E, passes in the
direction of the arrows through the plug of the cock to the burner H. Attached to
the top of the plug is a tube N of slightly less diameter than the combustion tube.
In both tubes there are vertical slots cut, corresponding to each other in position,
and serving as air ways. In the combustion tube there is also a horizontal slot O
cut, and through this a handle A passes, and is fixed to the inner tube; consequently
on the handle A being turned both the gas and air ways are opened or closed at
the same time in equal proportions.
The construction of Bunsen or atmospheric air and gas burners so that the turning
of a handle opens or closes both the gas and air ways at the same time is not new,
but the arrangement of the various parts, as herein described and shown on the
Drawings, whereby greater convenience is secured, is new.
Having now described and particularly set forth the nature of this Invention,
and the manner in which the same is or may be used or carried into effect, I would
observe in conclusion that I do not confine or restrict myself to the precise details
or arrangements which I have described or referred to, as variations may be made
therefrom without deviating from the principles or main features of this Invention, but
what I consider to be novel and original and therefore claim as the Invention secured
to me by the herein-before in part recited Letters Patent is, the construction of
burners for burning a mixture of gas and atmospheric air, as herein described and
shown on the Drawings.
In witness whereof, I, the said Charles Stephen Robinson, have hereunto set
my hand and seal, this Sixth day of March, in the year of our Lord One