Improvements in Regenerative Gas Lamps.
Year: 1886

page_text: Date of Application, 4th Dec., 1886
Complete Left, 4th Oct., 1887
Complete Accepted, 4th Nov., 1887
PROVISIONAL SPECIFICATION.
Improvements in Regenerative Gas Lamps.
I JOHN EVANS LEWIS of 60 and 62 Market Street, Manchester in the County of
Lancaster, Draper, do hereby declare the nature of my invention to be as
follows:-
This invention refers to that description of Regenerative gas lamp known in the
market as "Bower's Patent Regenerative Gas Lamp" and other similar lamps which
have hitherto been mainly used for indoor purposes and consists in certain improvements
whereby the same are rendered suitable for outdoor use.
In performing my invention I surround the ordinary chimney of say the Bower
Jamp with an outer metallic casing which at the top terminates in a hood of special
construction consisting of an outer cylinder of large diameter formed of perforated
metal, inside this again is a plain metal cylinder of somewhat smaller diameter
(hereinafter called the baffle cylinder) which rises nearly to the top of the hood and
so compels any air entering the hood to rise in order to pass over the upper edge of
the baffle cylinder when it enters one of a series of seginental divisions also formed in
the same hood and surrounding the upper end of the outer metallic casing herein before
mentioned. The mouth or outlet end of this casing is still further protected by
metallic disc plate arranged horizontally a short distance above it. The inner tube or
ordinary chimney of the lamp is similarly protected by a horizontal plate and is
internally divided by division plates into a series of vertical segmental divisions which
extend downwards to the ordinary hood or head of the lamp. In this manner I
ensure that from whatever quarter a gust of wind may be blowing it shall not be able
to disturb the upward current of air in the chimney or to injure disturb or render
unsteady the flame of the burner.
21
The outer casing hereinbefore mentioned which forms an inlet for air at its
lower end terminates in a canopy overhanging the head of the lamp and which in
turn supports a semi-globular glass which depends from its outer edge and being of
larger diameter so entirely surrounds and encloses the globe or glass of the ordinary
Bower lamp.

page_text: .
I provide for the inlet of air to this glass or globe not only through the outer
casing hereinbefore mentioned but also through two sets of perforations arranged one
above another around the bottom edge of the casing and protected by a baffle plate or
annular rim but I also provide for the inlet of air to the outer globe and thence to the
inner globe and burner through the lower air tube which extends through the outer
globe to the outside in the ordinary manner. Instead however of permitting the air
to pass up such air tube and direct to the burner I compel the same to take a tortuous
course by stopping up the direct passage through the air tube and causing the same to
enter through suitable perforations first into the larger globe and thence over an
annular baffle rim through another set of perforations direct into the upper part of the
said air tube and thence to the burner.
I support both glass globes by the same bayonet joint and hence am enabled to
lower both together to obtain access to the inside and for lighting the lamp.
Dated this 3rd day of December 1886.
JOHN G. WILSON,
Agent for the Applicant.

page_text: I, JOHN EVANS LEWIS of 60 and 62 Market Street, Manchester, in the County of
Lancaster, Draper, do hereby declare the nature of my said 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 refers to that description of Regenerative Gas Lamp known in the
market as "Bower's Patent Regenerative Gas Lamp" and other similar lamps which
have hitherto been mainly used for indoor purposes and consists in certain improve-
ments whereby the same are rendered suitable for outdoor use.
On the accompanying drawing Fig. 1 is an exterior view and Fig. 2 a sectional
view of a Bower Regenerative Gas Lamp embracing my improvements.
Fig. 3 is a sectional plan of Fig. 1 on the line a-b and Fig. 4 a sectional plan of
Fig. 2 on the line c―d.
Fig. 5 is a sectional view (on a larger scale) of the improved air tube shewn
separately.
In performing my Invention I surround the ordinary chimney of the Bower or
other lamp with an outer metallic casing a which at the top terminates in a hood of
special construction consisting of an outer cylinder b of large diameter formed of
perforated metal; inside this again is a plain metal cylinder c of somewhat smaller
diameter (hereinafter called the baffle cylinder) which rises a certain distance inside
the hood and so compels any air entering the lower part of the hood to rise in order
to pass over the upper edge of the baffle cylinder.
The
A series of segmental divisions d d are also formed in the same bood as seen more
clearly in Fig. 4 and surrounding the upper end of the outer metallic casing a.
mouth or outlet end of this casing a is still further protected by a metallic disc plate e
arranged horizontally a short distance above it. The inner tube or ordinary chimney
of the lamp is similarly protected by a horizontal plate g and is internally divided
by division plates (see Fig. 3) into a series of vertical segmental divisions which
extend downwards to the ordinary hood or head of lamp i.
In this manner I ensure that from whatever quarter a gust of wind may be
blowing it shall not be able to disturb the upward current of air in the chimney or to
injure, disturb or render unsteady the flame of the burner.
The outer casing a which forms an inlet for air at its lower end terminates in a
canopy of overhanging the head of the lamp and which in turn supports a semi-
globular glass & which depends from its outer edge and being of larger diameter so
entirely surrounds and encloses the globe or glass of the ordinary Bower Lamp.
I provide for the inlet of air to this glass or globe not only through the outer
casing a as herein before mentioned but through the annular space m between the top
edge of the glass and the bottom of the canopy. I also provide for the inlet of
air to the outer globe and thence to the inner globe and burner through the lower

page_text: air tube o which extends through the outer globe to the outside in the ordinary
manner. Instead however of permitting the air to pass up such air tube and direct
to the burner I compel the same to take a tortuous course as seen more clearly in
Fig. 5 by stopping up the direct passage through the air tube by the insertion of a
division plate p and causing the same to enter through suitable perforations first
into the larger globe k and thence through another set of perforations & over the
plate p direct into the upper part of the said air tube and thence to the burner.
I also provide a cap at the lowest extremity of the air tube and which is capable
of being screwed up, so as to close more or less the admission of air through the
perforations w w in case of stormy weather.
I support both glass globes by the same bayonet joint and hence am enabled to
lower both together to obtain access to the inside and for lighting the lamp.
Having thus particularly described and ascertained the nature of the said Inven-
tion, and in what manner the same is to be performed, I declare that what I claim is :-
1st. In the construction of regenerative gas lamps the employment of an outer
metallic casing surrounding the ordinary chimney and terminating at the top in a
hood of special construction and at the bottom in a canopy supporting an outer glass
or globe substantially as and for the purpose herein before described and illustrated
on the accompanying drawing.
2nd. The improvements in the air tubes of regenerative gas lamps substantially as
and for the purpose herein before described and illustrated on the accompanying
drawing.
Dated this 3rd day of October 1807
JOHN G. WILSON,
Agent for the Applicant.