Improvements in Lamps for Burning Petroleum.
Year: 1889

page_text: Date of Application, 12th Jan., 1889
Complete Specification Left, 12th Oct., 1889-Accepted, 16th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Lamps for Burning Petroleum.
A communication from abroad by SALOMON STURM, of Cologne, in the Empire of
Germany, Engineer.
I GEORGE DOWNING, of 8 Quality Court, Chancery Lane, in the County of
Middlesex, Patent Agent do hereby declare the nature of my said invention to be as
follows:-
-
The object of my invention is to manufacture lamps for burning petroleum in an
improved manner.
The improved lamp is formed to receive a circular wick, which is placed between
two concentric cylindrical tubes. The wick may be of any suitable material, but 1
prefer to use pumice stone for that purpose, formed in one piece, and entirely filling
the space between the two tubes. The wick projects a short distanco above the tubes,
when the lamp is burning.
The advantages accruing to the use of pumice stone, are:-its incombustibility ;
its uniform porosity; and its even surface.
The annular wick tube is supplied with oil, by means of a small pipe fitted with
a cock. The spindle of this cock projects outwards, where it is fitted with a
small hand wheel for regulating the supply of oil, and raising and lowering the
wick.
The inner wick tube forms the upper part of the central air tube, which has
openings in its sides for admitting air below the wick tube. A central sliding tube
passes up the centre of the burner, and carries a disc for diffusing, and also for
extinguishing the flame. This central tube also acts as a guide to a rod, the rod
being fitted with a cross-piece passing through the slots in the central tube. The
outer ends of this cross-piece are secured to the wick tube. The lower end
of the rod is fitted with a lever for raising and lowering it and the wick-tube together,
for regulating the flame.
The central tube is provided with a short rack, and the spindle of the cock is fitted
with a toothed sector gearing into the rack. by means of which and the small hand
wheel the oil cock is opened and closed. On closing the cock the disc is also
lowered upon the wick, whereby it is hermetically shut in the tube, and the flame is
extinguished.
T
1804
COMPLETE SPECIFICATION.
Improvements in Lamps for Burning Petroleum.
A communication from abroad by SALOMON STURM, of Cologne, in the Empire of
Germany, Engineer.
I, GEORGE DOWNING, of 8 Quality Court Chancery Lane, in the County of
Middlesex, Patent Agent, 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 :-
The object of my invention is to manufacture lamps for burning petroleum in an
improved manner.
The improved lamp is formed to receive a circular wick, which is placed between
two concentric cylindrical tubes. The wick may be of any suitable inaterial, but I
prefer to use pumice stone for that purpose, formed in one piece, enclosed iu

page_text: concentric tubes, and entirely filling the space between such tubes. The wick
projects a short distance above its tubes, when the lamp is burning.
The advantages accruing to the use of pumice stone, are its incombustibility ;
its uniform porosity; and its even surface.
The annular wick tube is supplied with oil, by means of a small pipe fitted
with a cock. The spindle of this cock projects outwards, where it is fitted with a
small band wheel for regulating the supply of oil, and raising and lowering the
wick.
The inner tube forms the upper part of the central air tube, which has openings
in its sides for admitting air from below. A central sliding tube passes up the
centre of the burner, and carries a disc for diffusing, and also for extinguishing the
flame. This central tube also acts as a guide to a rod, the rod being fitted with a
cross-piece passing through slots in the central tube. The outer ends of this cross-
piece are secured to the wick tube. The lower end of the rod is fitted with a lever
for raising and lowering it and the wick-tube together, for regulating and extinguishing
the flame.
The central tube is provided with a short rack, and the spindle of the cock is
fitted with a toothed sector gearing into the rack; by means of which and the
Small hand wheel the oil cock is opened and closed. On closing the cock the disc
is also lowered upon the wick, whereby it is hermetically shut in the tube, and the
flame is extinguished.
And in order that my said invention may be particularly described and ascertained,
reference is hereby made to the accompanying drawings, in which similar letters of
reference indicate corresponding parts.
Fig. is a sectional elevation of my improved lamp. Fig. 2 is a sectional
elevation at right angles to Fig. 1. Fig. 3 is a horizontal section on the line 1-2,
and Fig. 4 is a horizontal section on the line 3-4.
A is the body of the lamp, in which the cylindrical air tube a is fitted.
Slots
or openings a are formed in this tube for the entrance of air. bis a cylinder or
tube which, together with the tube a, forms an annular space to receive the wick
tube. At the bottom of this annular space the inlet pipe c for the petroleum is
fitted. This pipe has a stop cock at e for regulating the supply of oil to the wick.
Dd together form the wick tube, which consists of two short concentric tubes,
united at the bottom by a perforated annular plate. This wick tube may be con-
structed to receive all kinds of wicks. In the centre of the air tube a is placed the
pipe formed with a short toothed rack. A slotted or perforated funnel k is fitted
to the tube i, and the upper end of the same tube is provided with two slots and ²,
opposite one another, which slots act as guides to the cross bar n, the two ends of
such cross bar being fixed to the tube d¹, and centrally connected with the sliding
rod m, so that the wick tube is compelled to follow the up and down .movements of
the rod me.
This rod m is fitted at its lower end, with a grooved nut and forked
lever for raising and lowering the wick tube.
Upon the spindle of the plug of the cock e the hand wheel
sector are fitted, the latter gearing with the teeth of the tube i.
hand wheel in one direction the plate may be raised from the
wick, and the cock e being opened at the same time, the petroleum
the lamp may be lighted.
and the toothed
By turning the
surface of the
is admitted and
:
In order to increase the height of the flame, the lever p is pressed downwards,
whereby the rod m and the wick tube are raised, and the portions of the inner and
outer surfaces of the wick exposed to the flame are increased.
By turning the small hand wheel in a contrary direction the cock is closed, the
plate descends, and by bearing upon the cross bar n, the same draws the wick
back into its original position, enclosing it hermetically and extinguishing the
flame.
The wick is preferably made of pumice stone, turned in one piece, entirely filling
the wick tube D and projecting a suitable distance beyond it. Pumice stone is
preferred on account of its incombustibility and homogeneous poròsity; the surface

page_text: exposed to flame is practically indestructible, and therefore constantly produces an
even flame, the dimensions of which may he regulated as required, by causing the
wick tube and wick to ascend or descend.
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 the construction of lamps for burning petroleum, the arrangement of a mineral
wick in a special wick tube or carrier of suitable shape, which may be raised or
lowered when required to regulate the lighting power of the lamp, and which may be
withdrawn therefrom in order to clean or renew the wick, substantially as hereinbefore
described and illustrated by the drawings.
2. In combination with lamps as aforesaid, the use of the annular wick enclosed
in the wick tube D d; the cross bar n, the rod m, and the regulating lever p,
substantially as and for the purposes hereinbefore described and illustrated by the
drawings.
3. In combination with lamps as aforesaid, the extinguishing apparatus, consisting
of the movable plate 7. capable of being raised and lowered simultaneously with the
opening and closing of the admission cock c, substantially as hereinbefore described
and illustrated by the drawings.
4. In combination with lamps as aforesaid, the application and use of wicks formed
of pumice stone, substantially as hereinbefore described.
5. The general construction, combination and arrangement of the several and
respective parts, together constituting my improvements in lamps for burning
petroleum, substantially as herein before described and illustrated by the drawings.
Dated 19th October
1000
GEO. DOWNING,
8, Quality Court, London, W.C., Agent for Applicant.