Improvements relating to Lanterns for Incandescent Gas Lighting.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to Lanterns for Incandescent Gas Lighting.
I, HENRY TALBOT, of 56, Ondine Road, East Dulwich, in the County of Surrey,
Superintendent of Public Lighting, do hereby declare the nature of this invention
to be as follows:--
The object of this invention is to adapt the lanterns as now employed for
street lighting, for use with incandescent burners and mantles without chimneys.
The lanterns, as at present constructed, are not sufficiently proof against
currents of air for the purpose of incandescent lighting without chimneys, and
the present invention, therefore, consists in means for directing or guiding
these currents of air, so that they will not act upon the flame.
An incidental advantage is, that the means adopted for the above purpose, may
be adapted as a reflector, and thus increase the efficiency of the lamp, while the
sides of the lantern are kept cool.
In carrying out this invention, the base of the lantern is made sufficiently air-
tight to prevent the entrance of currents of air, such as would be caused by a high
wind, and in the top of the lantern is arranged a square plate of enamelled
metal, having a central hole with a bar across it.
The angles of this plate are less than right angles, and slightly extend beyond
the edges, so that they will fit into the angles of the lantern frame, and leave a
space between the edges of the plate and the sides of the lantern.
Air will thus be able to pass into the lantern, but it will be directed down the
sides, thus keeping the sides cool, and it will not blow onto the flame.
Above the central hole in the plate is arranged a chimney, the top end of which
is contracted to prevent down currents of air, and through the chimney extends
the stem of a hook, which is attached to the bar by a nut, or in any other con-
venient manner.
This hook is supported by a bar arranged across the ventilator of the lantern,
or in any other convenient manner.
By these means, currents of air arising from high winds cannot blow upon the
flame of the incandescent burner, and thus the burner can be used without a
chimney.
It will be obvious that in some cases a chimney may be used, and that the cold
currents of air will be prevented from blowing onto the heated chimney, which
will thus be prevented from breaking.
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177 1
£1 1000
NEWTON & SON,
Agents for the Applicant.

page_text: Improvements relating to Lanterns for Incandescent Gas Lighting.
I, HENRY TALBOT, of 56, Ondine Road, East Dulwich, in the County of Surrey,
Superintendent of Public Lighting, 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:-
1
The object of this i
invention is to adapt the lanterns as now employed in street
or public lighting, for use with incandescent burners and mantles without
chimneys.
11.
i
The use of chimneys in incandescent public gas lighting presents many
inconveniences, and therefore the desire to do away with chimneys is almost
universal, but it has been found that the lanterns, as at present constructed, are
not sufficiently proof against currents of air for the purpose of incandescent light-
ing without chimney's, and the present invention therefore consists in means for
preventing these currents of air acting upon the. flame.
An incidental advantage is, that the means adopted for the. above purpose,
will serve as a reflecting surface, and thus increase the efficiency of the lamp,
while the sides of the lantern are kept-cool.
In the accompanying drawing,
t
Fig. 1 is a side elevation, partly in-section, of so much of a lantern as is
required to illustrate my invention.
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Fig. 2 is a top plan view, with part of the cap' removed; and
Fig. 3 is an underside plan view of the deflector or the reflecting, surface..
Fig. 4 shows a slight modification in the manner of supporting the deflector.
In carrying out this invention, the base-of-the lantern A is made (in any
convenient manner) sufficiently air-tight to prevent the entrance of currents of
air, such as would be caused by a high wind. In the upper part of the lantern A,
‘is arranged a square plate B of enamelled metal, having a central hole C with a
bar across it.
The angles of this plate B, as will be seen by Fig. 3. are not quite right angles,
but are slightly splayed out, or extend beyond the edges, so that they will fit into the
angles of the upper part or roof of the lantern frame, and leave a space between
the edges of the plate and the roof of the lantern, as shown in Figs. 1 and 4.
As the bottom of the lantern will be so far air-tight as to prevent-the necessary
quantity of air required to support combustion from entering air for this purpose
will be induced to enter by the cylindrical ventilator E of the lantern. This air
will be deflected by the plate B, and directed down the sides of the lantern; thus
keeping the sides cool, and it will not blow upon the mantle, and thus destroy the
mantle, or render the flame unsteady.
The central hole C in the plate B leads to a chimney F, conveniently secured
to the plate B. This chimney F extends upwards nearly to the top of the
ventilator E of the lantern, and the top end of the chimney F is contracted, as
shown, to prevent down currents of air. Through the chimney extends the
stem of a hook G, which is attached to the bar D by a nut G¹, or in any other
convenient manner.
This hook G is supported by a bar H'arranged across the top of the ventilator E
of the lantern A, or in any other convenient manner.
By screwing up the nut G. the plate B will be jammed up into the roof of the
lantern, and thus held perfectly secure. In the modification Fig. 4, clips J are
rivetted to the metal panels of the roof, and are bent round the edges of the
plate, so as to support the plate.
Although I have illustrated my invention as applied to a square lantern, it will

page_text: be obvious that the invention is equally applicable to other polygonal shaped, or
even round, lanterns, the shape of the plate B being more or less modified on the
lines laid down, to make it apply to the altered conditions.
By these means, currents of air arising from high winds cannot blow upon the
mantle and flame of the incandescent burner, and thus the burner can be used
without a chimney.
It will be obvious that there may be times in which it may be found desirable
to use a chimney, in which case the deflector or plate B will prevent cold currents
of air from blowing onto the heated chimney, and thus avoid the breakage of the
chimney.
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:-
In a lantern for public incandescent gas lighting, the use of a deflector suitably
supported in the roof of the lantern, and formed so as to allow air to pass round
its edges and also with a central hole having a bar across it, and a contracted
chimney extending upwards into the ventilator of the lantern, as herein shown and
described, and for the purpose set forth.
Dated this 16th day of December 1800
NEWTON & SON,
Agents for the Applicant.