Improvements in Oil Lamps.
Year: 1894

page_text: COMPLETE SPECIFICATION.
Improvements in Oil Lamps.
I, CHARLES ELLIS HALLS of 74 & 75, St. George Street, London, E. Ships'
Lamp Maker, 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 lamps, especially those used in ship,
railway or street lanterns, and is intended to provide a lamp which will give a
better light than those commonly in use.
The body of the lamp is of circular form with an air pipe feeder at one side,
which projects a little and thus forms a stop when the lamp is placed in the lantern,
preventing it turning.
The body is divided by a partition at the upper part, forming a shallow chamber
on top of the oil reservoir. This forms an air chamber and air is admitted through
slots in the side of the case filled in with wire gauze or finely perforated sheet
metal. The top of the case or body of the lamp is provided with a number of
holes, which allow the air to pass from the chamber to the underside of the burner,
giving a greatly increased air supply and adding to the brilliancy of the light.
The top of the lamp or frame carries a detachable reflector throwing the light
directly downwards, furnished with a tapering chimney into the lower end of which
the top of the glass chimney projects. The chimney length is thus considerably
increased and the draught rendered stronger. A bale or handle is hinged to the
top by which the lamp can be hung up if desired, when removed from the lantern.
In order that the invention may be more clearly understood, reference is had to
the accompanying sheet of drawings, in which
Fig. 1 is a side elevation and Fig. 2 a vertical section of the lamp, and
Fig. 3 is a plan of the body of the lamp.
A is the body or reservoir of cylindrical form, with a partition B forming the
upper part into an annular chamber b. The side of the case A is formed with
slots C at the upper part, opening into the chamber b. These slots are filled in
with wire gauze or finely perforated sheet metal c, and allow free passage of air
from the outside of the lamp to the chamber b. The supply of air is regulated
by the gauze fitted in the slots, which prevents any sudden gust of wind disturbing
the flame.
Around the central part on which the burner D is fixed, the top of the chamber
is provided with the circular row of holes b' allowing the air admitted through
the slots C to pass to the burner. The air thus supplied passes under the flange d
of the burner and through the holes d' giving greatly increased supply of air.
a is the air pipe feeder at the side of the reservoir serving as a stop, the air
pipe allowing any gases that may form in the reservoir to escape.
The top E of the lamp is formed with a small ledge e on the inner side, on
which the detachable reflector F rests. This reflector is provided with the
chimney at its centre into the lower end of which the top of the glass chimney G
projects, the draught being thus greatly increased.
The glass chimney is made of special form being wide at the bottom to allow
of free passage of air to the flame.
The bale e is hinged to the top E allowing the lamp to be hung up when not
n the lantern.
The lantern in which this lamp is to be used is provided with a false bottom
few inches above the ordinary bottom, having a large circular hole through
which the body of the lamp is passed, the rim a' at the top resting on the ledge

page_text: thus formed. All the air which passes to the burner is thus supplied through
the wire gauze and chamber, ensuring an even and regular draught, while the
free circulation of air around the reservoir will keep the oil cool.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is.
(1) In an oil lamp, dividing the body of the lamp into lower and upper chambers
forming respectively an oil reservoir and an air chamber, with slots at the side
filled in with wire gauze, or finely perforated sheet metal, and perforations at the
top permitting the air to pass to the burner, substantially as described and shown
and for the purposes specified.
(2) In an improved lamp for swinging or other lanterns, the combination with
a lamp body divided into a reservoir and an air chamber, having slots, filled in
with wire gauze or finely perforated sheet metal, at the side, and perforations at
the top supplying air to the burner, of a feeder projecting from the side of the
reservoir and forming a stop when the lamp is fitted in the lantern, substantially
as and for the purposes specified.
(3) In an oil lamp the combination with a top frame, of a detachable horizontal
reflector fitted in the said frame, with a short chimney at the centre, into which
the upper end of the glass chimney projects, substantially as described and shown
and for the purposes specified.
(4) The improved oil lamp for lanterns with air chamber and supply, feeder at
the side forming a stop, reflector at top with chimney and bale for suspension,
substantially as described and shown in the accompanying drawings, and for the
purposes specified.
Dated this 11th day of June 1894
GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.