Improvements in the Arrangement and Construction of Gas Burners for Producing Light.
Year: 1887

page_text: Date of Application, 5th Oct., 1887
Complete Specification Left, 4th July, 1888
Complete Specification Accepted, 10th Aug., 1888
Improvements in the Arrangement and Construction of Gas Burners
for Producing Light.
I JAMES LEWIS of 6 Gloucester Terrace West Green Road, Tottenham in the
County of Middlesex Gas Engineer do hereby declare the nature of this invention to
bo as follows:-
My invention relates to improvements in the arrangement and construction of gas
burners for consuming a mixture of gas and air supplied to the burner under pressure
the combustion of the gas and air causing a cap of platinum wire gauze or other
suitable metal on the end of the burner to become incandescent and thus produce
light.
For this purpose a cap of platinum wire gauze (or other suitable metal or mixture
of metals) is mounted on the end of a tube or chamber to form the burner. Just
below the gauze cap a block of metal perforated with a number of holes (or it may be
a number of small tubes) is inserted in the mouth of the tube a space or chamber
being formed or arranged between it and the end of the pipe which conducts the
mixture of air and gas to the burner. The perforated block or series of small tubes
serves to prevent the gas flame from firing back into the supply pipe and thus cause
the mixture of gas and air to explode. A metal ring or block is inserted between
the ends of the supply pipe and chamber below the burner to fill up the space between
the inner surface of the chamber and the outside of the supply pipe where they are
connected together.
The upper part or end of the supply pipe may be connected by a reel or sleeve of
steatite or other non-conducting material to the main supply pipe, although this may
be dispensed with.
Branch pipes are arranged for the admission of induced currents of air to the
supply pipe at the point where the jet of compressed air is admitted into the supply
pipe the compressed air pipe being enclosed in a larger pipe into which gas is
admitted from a was sunnly vine.

page_text: The end of the compressed air pipe is formed conical thus causing a jet of air
under pressure to draw the gas from the annular space surrounding the air pipe
together with induced currents of air from the branch pipes so that the gas and air
become intimately mixed together before they reach the burner.
T
1
11007
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Arrangement and Construction of Gas Burners
for Producing Light.
I, JAMES LEWIS, of 6 Gloucester Terrace, West Green Road, Tottenham in the
County of Middlesex Gas Engineer, do hereby declare the nature of this invention
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 improvements in the arrangement and construction of gas
burners for consuming a mixture of gas and air supplied to the burner under pressure
the combustion of the gas and air causing a cap of platinum wire gauze or other
suitable metal on the end of the burner to become incandescent and thus produce
light.
For this purpose a cap of platinum wire gauze (or other suitable metal or mixture
of metals) is mounted on the end of a tube or chamber to form the-burner. Just
below the gauze cap a block of metal perforated with a number of holes (or it may be
a number of small tubes) is inserted in the mouth of the tube a space or chamber
being formed or arranged between it and the end of the pipe which conducts the
mixture of air and gas to the burner.
The perforated block, or series of small tubes, serves to prevent the gas flame from
firing back into the supply pipe and thus cause the mixture of gas and air to explode-
A metal ring or block is inserted between the ends of the supply pipe and chamber
below the burner to fill up the space between the inner surface of the chamber and a
the outside of the supply pipe where they are connected together.

page_text: The upper part or end of the supply pipe may be connected by a reel or sleeve of
steatite or other nonconducting material to the main supply pipe, although this may
be dispensed with.
Branch pipes are arranged for the admission of induced currents of air to the
supply pipe at or about the point where the jet of compressed air is admitted into the
supply pipe the compressed air pipe being enclosed in a larger pipe into which gas is
admitted from a gas supply pipe.
The end of the compressed air pipe is formed conical thus causing a jet of air under
pressure to draw the gas from the annular space surrounding the air pipe together
with induced currents of air from the branch pipes so that the gas and air become_
intimately mixed together before they reach the burner.
And in order that my invention may be clearly understood and readily carried into
practice I will proceed to describe the same more fully with reference to the Drawing
hereto annexed which shows a vertical section of the arrangement and construction
of my improved gas burner together with the air and gas supply pipes combined
therewith.
a is the cap made of platinum wire gauze (or other suitable metal or mixture of
metals) mounted upon the tube a¹. a² is a group or number of small tubes (filling
the top end of tube a¹) through which the mixture of air and gas passes from the
space or chamber a³ into the cap a for combustion.
The series of tubes a² serves to prevent. the gas flame from firing back into
the chamber a and thus cause explosion which has hitherto happened in gas
burners of this character.
a is a ring of metal so inserted as to fill up the space between the inner
surface of the tube a' and the end of the supply pipe upon which it fits and is
connected to conduct the mixture of gas and air to the burner a.
is a reel or sleeve of steatite or other suitable nonconducting material which
connects the end of the supply pipe to the main portion thereof 6x in order to
prevent the transmission of heat froin the burner to the said pipe b*.
Each end of the reel is formed slightly conical internally and the ends of
the pipes and * which are inserted therein are formed with a corresponding
male cone and are so arranged as to leave a space between the two ends where
they approach one another as shewn on the Drawing.
are branch tubes on the pipe 6× through which induced currents of air
are drawn in by the current of compressed air as it issues from the nozzle of the
compressed air pipe c. The pipe is connected to the end of the pipe d into
which gas is admitted by the branch pipe from which it passes through the
annular space around the pipe c into the pipe * and is mixed with the air from
the pipes b and c in its passage to the burner.
The end of the pipe c is screwed or otherwise fitted into the end of the pipe d
and is surrounded thereby.. The compressed air supply pipe c. and the gas supply
pipe dare furnished with stop cocks as shewn and the nozzle of the compressed
air supply pipe e may be varied in diameter according to the air pressure.
If desired in place of the series of tubes a² a block (formed of heat resisting
or non-conducting material) perforated with a number of small holes may be used
in the same way.
This perforated block, or series of tubes a², constitutes a most important feature
of my present improvements as while it prevents "firing back" or internal explosions
as previously explained it also assists to more thoroughly and intimately inix the
gas and air.
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 :-
1. In incandescent gas burners having air supplied thereto under pressure the
combination of a non-conducting reel with a metal gauze cap a, intermediate
tube a¹, series of tubes a³, supply pipes 6 and 6, the latter having induction

page_text: tubes arranged just above the nozzle on the air supply pipe e, all substantially
in the manner and for the purposes herein before described and represented in the
drawing hereto annexed.
2. In incandescent gas burners the use and application of a perforated block
or series of tubes, such as a², arranged to act in the manner and for the purposes
hereinbefore described and illustrated in the Drawing hereto annexed.