Improvements in Wickless Petroleum Stoves or Burners.
Year: 1895

page_text: Date of Application, 6th Feb., 1895
Complete Specification Left, 25th Feb., 1895-Accepted, 1st June, 1895
PROVISIONAL SPECIFICATION.
Improvements in Wickless Petroleum Stoves or Burners.
I, AXEL ELIS MALMSTRÖM, of Vasagatan 12, Stockholm Sweden, Merchant,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the valves of wickless stoves or burners consuming
petroleum or the like, and its chief object is to avoid the leakage that is liable to
occur in such stoves or burners as hitherto made in which the valve spindle passes
through a hole in the side of the lower part of the burner. With this object in
view according to my invention both the valve itself and its spindle are placed
inside the pipe leading from the reservoir to the burner, and the exit aperture of
the burner is so formed that it will be closed on the valve being raised. The
valve is operated by moving its spindle up or down, and this can be effected in
many ways, for instance by a screw, a lever or inclined planes. The above
described arrangement of the valve makes it possible to place the burner opening
and the axis of the petroleum supply pipe in line, thus rendering the inside of the
burner and the inside of the pipe easily accessible by a piece of wire or other
appliance for cleaning purposes.
In the accompanying drawings several arrangements are shown by way of
example. The same letters represent corresponding parts in the different figures,
which are vertical sections of an oil-stove provided with different arrangements of
valve apparatus according to my invention.
In Fig. 1 lever gearing and in Fig. 2 inclined planes are used for operating the
valve and in Figs. 3, 4 and 5, screws.
a is the oil reservoir; b the pipe through which the oil passes to the burner c;
d the valve; and the valve spindle.
In Fig. 1 the spindle e is jointed to the arm ƒ of a lever. The fulcrum g of the
lever is fixed to the bottom of the reservoir, but may equally well be fixed at the
top if desired. From the arm h of the said lever, a rod i passes upwardly through
a stuffing box and on its threaded end is placed a nut k, in such a way that it can
be rotated but not moved longitudinally. On turning this nut in one direction or
the other the valve will be opened or closed.
In Fig. 2 the valve spindle e is operated by moving a rod / longitudinally to aud
fro. The end of the rod is provided with two inclined planes, which, on the rod
being moved, act on corresponding planes in a hole in the valve spindle and cause
the latter to move up or down. In this figure is diagrammatically shown by dotted
lines an arrangement for imparting the necessary movement to the rod / by means
of a screw and nut, as in Fig. 1, in combination with a hell-crank lever.
In Figs. 3 and 4 the valve spindle e is screw-threaded in the former figure at the
lower end, and in the other near the top, and passes through a fixed nut. When
the spindle is turned to the right or left by the arm m the valve is opened or
closed.
In Fig. 5 there is an inclined rod n immovable lengthways, which is screw-
threaded at the lower end and takes into a screw threaded hole in the valve
spindle e. On turning the rod n the spindle e will be moved up or down and at the
same time a slight lateral movement will be given to the spindle.
Several modifications in the arrangements shown may be adopted for operating
the valve or its spindle provided the device by which the valve is operated passes
through the stove at a place where the heat developed when the stove is burning

page_text: cannot act injuriously on the packing round such device, and that the channel for
the passage of the gas to the burner is straight so as to be easy to clean and to
keep open.
Dated this 6th d...
ד
1.
1002
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.
COMPLETE SPECIFICATION.
Improvements in Wickless Petroleum Stoves or Burners.
I, AXEL ELIS MALMSTRÖM, of Vasagatan 12, Stockholm, Sweden, Merchant,
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 the valves of wickless stoves or burners consuming
petroleum or the like, and its chief object is to avoid the leakage that is liable
to occur in such stoves or burners as hitherto made, in which the valve spindle
passes through a hole in the side of the lower part of the burner. With this
object in view according to my invention both the valve itself and its spindle are
placed inside the pipe leading from the reservoir to the burner, and the exit
aperture of the burner is so formed and arranged that it will be closed on the
valve being raised. The valve is operated by moving its spindle up or down,
and this can be effected in many ways, for instance by a screw, a lever, or inclined
planes. The above described arrangement of the valve makes it possible to place
the burner opening and the axis of the petroleum supply pipe in line, thus
rendering the inside of the burner and the inside of the pipe easily accessible
by a piece of wire or other appliance for cleaning purposes.
In the drawings filed with my Provisional Specification several arrangements
are shown by way of example. In these drawings the same letters represent
corresponding parts in the different figures, which are vertical sections of an oil-
stove provided with different arrangements of valve apparatus according to my
invention.
In Fig. 1 lever-gearing, and in Fig. 2 inclined planes are used, for operating the
valve and in Figs. 3, 4 and 5 screws are used for this purpose.
a is the oil reservoir, b the pipe through which the oil passes to the burner c;
d the valve and e the valve spindle.
In Fig. 1 the spindle e is jointed to the arm f of a lever. The fulcrum of this
lever is fixed to the bottom of the reservoir, but may equally well be fixed to
the top thereof if desired. From the arm of the said lever, a rod i passes
upwardly through a stuffing box and on its screw threaded end is placed a nut k,
in such a way that it can be rotated but not moved longitudinally. On turning
this nut in one direction or the other the valve will be opened or closed.
In Fig. 2 the valve spindle e is operated by moving a rod longitudinally
to and fro. The end of the rod is provided with two inclined planes, which, on
the rod being moved end ways, act on corresponding planes in a hole in the valve-
spindle and cause the latter to move up or down. In this figure is diagram-
matically shewn by dotted lines an arrangement for imparting the necessary
end ways movement to the rod I by means of a screw and nut, as in Fig. 1, in
combination with a bell crank lever.
In Figs. 3 and 4 the valve-spindle e is screw-threaded, in the former figure at
the lower end, and in the other, near the top, and passes through a fixed nut.
When the spindle is turned to the right or left by the lever arm m the valve is
opened or closed.

page_text: In Fig. 5 there is an inclined rod n immovable lengthways, which is screw-
threaded at the lower end and takes into a screw threaded hole in the valve-
spindle e. On turning the rod n the spindle e will be moved up or down and at
the same time a slight lateral movement will be given to the spindle.
Several modifications in the arrangements shown may be adopted and other
arrangements may be used for operating the valve or its spindle, provided the
device by which the valve is operated passes through the stove at a place where
the beat developed when the stove is burning cannot act injuriously on the packing
round such device, and that the channel for the passage of the vapour or gas to the
burner is straight so as to be easy to clean and to keep open.
Having now 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 :-
1. A wickless petroleum stove or burner in which the valve for controlling the
exit of petroleum vapour to the burner proper, and the valve spindle are placed
vertically or approximately so within the discharge pipe leading from the
petroleum reservoir to the burner, and means are provided whereby the said
spindle and valve can be moved up and down substantially as and for the purpose
set forth.
2. Wickless petroleum stoves or burners constructed with valves and valve
operating mechanism constructed, arranged and operating as herein before described
with reference respectively to and shown in Fig. 1, in Fig. 2; in Fig. 3; in
Fig. 4; and in Fig. 5 of the drawings.
21 1
1000