Year: 1886

page_text: Date of Application, 1st Oct., 1886.
Complete Left, 29th June, 1887.
Complete Accepted, 6th Sept., 1887.
We, DAVID HULETT of 55 High Holborn in the County of Middlesex Gas Engineer
and RICHARD HURST of 3 Circus Terrace Greenwich in the County of Kent, Foreman
to the above, do hereby declare the nature of this invention to be as follows:-
This Invention relates to improvements in the construction of regenerative gas
lamps and also to improvements in the burners used therewith.
According to our invention these improvements are as follows.
The burner (suitable for regenerative lamps of various descriptions) is formed with
two or more chambers into one of which (advantageously spherical in its shape) the
gas enters from the supply pipe when the lamp is in operation this chamber becoming
very hot the gas is here heated to a high temperature and has plenty of space in
which to expand, it then passes through a series of radial holes and impinges against
a tube or plate which turns it upwards (or downwards) into the exterior chamber, this
outer chamber which serves to still further reduce the pressure and heat the gas
having a slit or opening formed on its circumference through which the gas issues
in a continuous circular stream: previous to ignition. The air inlet pipe is advan-
tageously covered at its outlet with wire gauze or other perforated material dished
upwards through which the heated air passes to support combustion.
The improvements in the lamps are as follows.
The body of the lamp consists mainly of an exterior casing having apertures to
supply the air to burner to support combustion the same apertures may be covered
by an ornamental or other arrangement.
The gas supply pipe and a similar bye-pass pipe are arranged upon either side of
the lamp which is mounted or swung on these pipes which at their upper end
converge into one pipe hung from the ceiling or otherwise suspended in the ordinary
manner, a similar arrangement can be carried out when the light is used as a bracket
or pillar. Before entering the lamp body each pipe is formed in a ring or other shaped
passage in which a governor or regulator of any suitable construction is introduced
through which the gas passes to a pipe turning at right angles or thereabouts and
entering the body of the lamp passing down to the burner hereinbefore described the
bye pass pipe being arranged in a similar manner as on the opposite side. Taps are
conveniently mounted on each side,

page_text: A single large air supply pipe or tube is mounted vertically in the centre of the
lamp and is suitably connected with the before mentioned air inlet apertures. Down
the centre of this pipe the gas supply pipe passes to the burner.
The burner with the slit running round its exterior circumference gives a continuous
flame the heated air causing it to be spread out somewhat saucer shaped. The burner
is enclosed within a suitable globe in the usual manner.
A further part of our improvements is to line the interior of the exterior casing of
regenerative lamps with fire clay (or other suitable material of a non-conducting and
porous nature) so as to absorb any moisture produced in the chamber or passage
through which the products of combustion pass."
A short distance from the top of the lamp a saucer of porous material perforated or
otherwise is suspended to absorb any moisture given off from the burner.
Dated this 1st day of October 1886.
TONGUE & BIRKBECK,
34, Southampton Buildings, London, W.C.,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Regenerative Gas Lamps and in Burners therefor.
We, DAVID HULETT, of 55 High Holborn, in the County of Middlesex, Gas
Engineer, and RICHARD HURST, of 3 Circus Terrace, Greenwich, in the County of
Kent, Foreman to the above, 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 :-
This invention relates to improvements in the construction of regenerative gas
lamps and also to improvements in the burners used therewith.
According to our invention these improvements are as follows reference being made
to the drawings hereto annexed Figure 1 of which shows a gas burner arranged and
constructed in accordance with the first part of our improvements.
The burner (suitable for regenerative lamps of various descriptions) is formed with
two or more chambers into one of which a (advantageously spherical in its shape) the
gas enters from the supply pipe a¹ when the lamp is in operation this chamber a
becoming very hot the gas is here heated to a high temperature and has plenty of
space in which to expand it then passes through a series of radial holes a² and
impinges against the inner surface of the tube or chamber 6 which turns it upwards
(or downwards) into the exterior chamber b¹.
This outer chamber 6' which serves to still further reduce the pressure and heat the
gas-has a slit or opening c formed on its circumference through which the gas issues
in a continuous circular stream previous to ignition. The air inlet pipe d (see
Figure 2) is advantageously covered at its outlet d¹ with wire gauze or other per-
forated material dished upwards through which the heated air passes to support
combustion.
The improvements in the lamps as represented by Figures 2 and 3 are as follows.
The body of the lamp consists mainly of an exterior or ornamental casing e having
apertures to supply the air through the pipe d to the burner to support combustion
the same apertures may be covered by an ornamental or other arrangement of casing.
The gas supply pipe a³ and a similar bye-pass pipe at are arranged upon either side
of the lamp Figure 3 which is mounted or swung on these pipes which at their upper
end converge into one pipe a hung from the ceiling or otherwise suspended in the
ordinary manner. We would remark that a similar arrangement can be carried out
when the light is used as a bracket or pillar. Before entering the lamp body each
pipe as a is formed in a ring or other shaped passage a in which a governor or
regulator of any suitable construction is introduced through which the gas passes
to a pipe a turning at right angles or thereabouts and entering the body of the
lamp passing down to the burner hereinbefore described the bye pass pipe a' being
arranged in a similar manner as on the opposite side. Taps are conveniently mounted
on each side,

page_text: A single large air supply pipe or tube d is mounted in the centre of the lamp and is
suitably connected with the before mentioned air inlet apertures. Down the centre of
this pipe the gas supply pipe passes to the burner.
The burner with the slit running round its exterior circumference gives a continuous
flame the heated air causing it to be spread out somewhat saucer shaped. The burner
is enclosed within a suitable globe 9 in the usual manner.
A further part of our improvements is to line the interior of the exterior casing f of
regenerative lamps with fire clay (or other suitable material of a non-conducting and
porous nature) so as to absorb any moisture produced in the chamber or passage
through which the products of combustion pass.
A short distance from the top of the lamp a saucer h of porous material perforated or
otherwise is suspended to absorb any moisture given off from the burner.
...
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
1. The improved arrangement and construction of burners for regenerative gas
lamps substantially in the manner and for the purpose hereinbefore described and
represented in Figures 1 and 2 of the drawings hereto annexed.
2. The improved arrangement and combination of the air and gas pipes and method
of introducing the air to the burners of regenerative gas lamps for supporting com-
bustion substantially in the manner and for the purpose herein before described and
represented in Figures 2 and 3 of the drawings hereto annexed.
3. The improved method of lining the casing of the air and gas tubes of regenerative
gas lamps with fire clay or other suitable non-conducting material for absorbing
moisture substantially as and for the purpose hereinbefore described.
4. The improved arrangement and application of a suspended saucer or cover of
porous material over regenerative gas lamps to absorb moisture substantially as and
for the purpose herein before described.
5. The improved arrangement combination and construction of regenerative gas
lamps and their burners substantially as described and represented in the drawings
hereto annexed.
Doted this 90th day of June 1887