Improvements in the Construction of Lamps and Lanterns.
Year: 1889

page_text: Date of Application, 14th Feb., 1889
Complete Specification Left, 11th Sept., 1889-Accepted, 19th Oct.,
1889
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Lamps and Lanterns.
I, WILLIAM HARVIE, of No. 222 Broomielaw, Glasgow, in the County of Lanark,
North Britain, Lamp Manufacturer, do hereby déclare the nature of this invention to
be as follows:-
This Invention relates to improvements in the construction of lamps and lanterns,
and is specially applicable to binnacle lamps, but it is also applicable to other
lamps.
The object of my present improvements is to effect a full and steady light at all
times, especially where the lantern is subjected to more or less violent gusts of
wind.
In carrying out my said improvements, I form round, or only partially round, the
body of the lantern, an air-casing; and the supply of air to the lamp is allowed to
enter the said air-casing by a series of perforations, or the equivalent thereof, formed
wholly or partially round the said air-casing, the said supply of air being discharged
into the interior of the lantern through perforations or openings formed in the lower
part of the said air-casing, the said perforations or conduits being preferably so
arranged that the air is caused to flow up through an opening in the oil vessel of the
lantern, and so conducted to the flame. In order to protect the outer perforations in
the air-casing from blasts of the outer air. the said perforations may be protected by
means of suitable shields.
The chimney for leading off the products of combustion is protected by a
suitable wind guard.
In applying my improvements to circular lamps having circular oil founts, the top
of the lantern is made double with a funnel in the centre, and tubes, or annular
openings, are provided to convey the air from the said top to the under part of
the lantern.
D: 1941 of hair 1000
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.
COMPLETE SPECIFICATION.
Improvements in the Construction of Lamps and Lanterns.
I, WILLIAM HARVIE of No. 222, Broomielaw, Glasgow in the County of Lanark,
North Britain, Lamp Manufacturer, 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 Lamps and Lanterns,
and is specially applicable to Binnacle Lamps, but it is also applicable to other
Lamps.
The object of my present improvements is to effect a full and steady light at all
times, especially where the Lantern is subjected to more or less violent gusts of
wind.
In order that my said improvements may be readily understood and carried into
effect, I will proceed to describe the same, reference being made to the accompanying
sheets of Drawings.
Figures 1, 2, and 13, sheet 1, of which are sectional elevation, part sectional plan,
and detail respectively of a Binnacle Lamp made in accordance with said
my

page_text: Figures 3 and 4, sheet 2, are sectional elevation and part plan of a circular Lantern
also made in accordance with my said Invention.
Figures 5 and 6, sheet 2, are sectional elevation and part plan of a modification
of same.
Referring to Figures 1, 1", and 2, sheet 1, the Lantern A, here shown, which is
provided with a suitable wind guard B, is constructed with a double top C, and an air
casing or space D, which is formed at the back of the Lantern and partly around it.
This air casing D, communicates with the bottom of the Lamp, and is provided with
one or more series of perforations E for admitting the air into the said air casing or
space D, from which it is allowed to pass to the burner by a series of perforations F,
formed in the sides of well or recess space G, in the bottom of the Lantern. If desired
I may protect the perforations E, by means of a suitable shield or cover H.
The Lamp and burner J, is provided with an air tube, formed at the one side of
the wick and passing down to the bottom of the lamp in order to allow of the air
being conducted from the recess space G, to the wick, thus supplying the flame. The
products of combustion passing upwards through the funnel and escaping by the
top.
Referring to Figures 3 and 4 sheet 2, the Lantern here shown is provided with a
suitable wind guard B, and is constructed with a double top or cover K, and an annular
air casing or space L, formed all around the Lamp. The said air casing communicating
with the double top as also the bottom of the Lantern by means of the annular
opening, which is formed by means of mounting a suitable flange 1, below the said
casing thus allowing the passage of the air from the casing or space to the Lamp. The
air for the combustion of the flame in this case is admitted by a series of perfora-
tions M, formed near the bottom of the Lantern in the usual way.
The modification shown in Figures 5 and 6, is a Lantern provided with a suitable
wind guard B, and provided with a double top or cover K, and air casing formed
partially around the Lamp, preferably as shown, that is, having three (though I may
use any other convenient number,) air tubes or spaces N, which communicate with
the double top and also with the lower part of the Lantern. The air for the combus-
tion of the flame is also in this case admitted through a series of perforations M,
formed in the usual way round the bottom of the Lantern.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to performed I declare that what I
claim is
First. The general arrangement and construction of lamps and lanterns as shown in
the accompanying Drawings and hereinbefore described, or any mere modification
thereof.
Second. The arrangement and construction of the lantern and lamp as shown and
described with reference to Figures 1, 1, and 2, sheet 1, of the accompanying
Drawings, having series of perforations E, air casing or space D, perforations F, and
air tube j, all substantially as and for the purposes herein before described and shown
in the accompanying Drawings.
Third. The arrangement and construction of the lantern having annular air space
or casing L, annular opening 1, and flange all substantially as and for the purposes
herein before described and shown in Figures 3 and 4, sheet 2, of the accompanying
Drawings.
Fourth. The arrangement and construction of the lantern and lamp having as a
modification a number of air tubes or spaces N, all substantially as and for the
purposes hereinbefore described and shown in Figures 5 and 6, sheet 2, of the
accompanying Drawings.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.