An Improved Wickless Cooking and Heating Lamp for Use with Liquid Fuel.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
An Improved Wickless Cooking and Heating Lamp for Use with
Liquid Fuel.
'
I, CARL ERNST ÖSTLUND of Mästersamuelsgatan 27, Stockholm in the Kingdom
of Sweden Mechanical Engineer do hereby declare the nature of this invention to be
as follows:-
The object of the present application consists essentially of a wickless apparatus for
cooking and heating which is fed with petroleum or other fluid combustible and in
which the fuel is forced up into the burner and there volatilised by the heat of the
flame by means of compressed air or gas in the reservoir.
Referring to the accompanying drawings
Figure 1 shows one method of constructing the apparatus partly in elevation and
partly in section.
Figures 2, 3 and 4 represent the burner of the same in longitudinal section in
cross section and in plan respectively.
Figure 5 shows a plate from which the burner tube can be constructed.
The burner tube b is fixed air tight upon the upper part of the tube a rising from
the receptacle. The said tube b is provided underneath with side openings and above
with a wide ring plate or dish shaped part upon which latter the flame distributor e
is placed either loosely or attached or secured in any convenient method. The upper
end of the tube a is closed and provided with narrow apertures or screwed-in burners
for the fuel.
The special form and arrangement of the burner tube b constitutes an important part
of the invention. The side openings are conveniently arranged in a wider portion of
the tube. For the preparation of such a tube a plate shaped as shown in Figure 5 is
preferably made use of. As may be seen from the drawing the plate is formed with
a bent piece d running from the one side to the other and provided with numerous
cross slits. This plate is then rolled together and the edges of the same firmnly
attached by brazing or soldering, so that the plate is formed into a tube. On account
of the bending of the plate the slits aforesaid are widened out between the intervening
pieces of the plate and form thereby without further operation the side openings of
the burner tube. The bent-out piece may have any desired shape.
In Figure 5 is indicated on the right-hand side two optional forms of the bent-out
piece the one shown in black lines, the other in dotted lines. This burner has the
advantage that the air is first heated before the same arrives in the flame whereby the
combustion is more complete and the heat greater than with the burners of usual
description. The invention consists moreover in improvements in the pumping
mechanism whereby air is forced into the reservoir. This arrangement is illustrated
in Figure 1. The pump cylinder consists as usual of a tube ffirmly attached to the
reservoir which passes through the same to the opposite side and is there secured in a
closely fitting sleeve g also fixed to the side of the reservoir. At this end the tube is
provided with a bottom in the midst of which there is an escape hole. Against this
opening a stopper his pressed by means of a spring & placed in a narrower part of
the sleeve the said spring pressing against the cover i screwed on to the narrower
part of the sleeve. The plunger has no valve, but only an opening which
communicates by means of a tube running through the pump rod m with the outer air
k

page_text: so that air can pass into the space between the plunger and the bottom of the
cylinder. When the plunger is pushed in, the outer opening of this tube is closed by
the thumb so that the air cannot pass out, but will be pressed through the opening in
the bottom of the reservoir. Between the sleeve g and the pump cylinder sufficient
space is left to admit the air. If the valve should get out of order the cover i
is screwed off and the valve can then be taken out and mended. The cup o, which is
filled with spirit as usual when the apparatus is to be set going in order to heat the
burner by means of the spirit flame, is in this construction so arranged upon the
reservoir that the same cannot become too hot, it only becomes so hot that the fluid
is driven up the burner tube by means of the pressure generated in the reservoir and
there volatilised, the gases or vapours escaping through the burner are immediately
kindled by the spirit flame itself so that it is not requisite to specially light the main
flame.
The above described construction of the burner and the method of carrying the
same into effect has the special advantage that the side openings of the bottom part
do not diminish the section of the metal and thereby efficient conduction of the heat
to the upright tube for the liquid fuel is obtained.
Dated this 15th day of May 1896
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant.
An Improved Wickless Cooking and Heating Lamp for Use with
Liquid Fuel.
I CARL ERNST ÖSTLUND, of Maestersamuelsgatan, 27, Stockholm, in the Kingdom
of Sweden, Engineer, 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 such wickless apparatus for cooking and heating as are fed
with petroleum or other combustible fluid and in which the fuel by means of
compressed air is forced up into the burner and there volatilized by the heat of the
flame.
The apparatuses above mentioned have the disadvantage that their burners are very
expensive to manufacture and the opening in the same for the air diminishes the heat
conducting sections too much, furthermore the pump is too expensive in manufacture
and the valves of the same difficult of access.
The object of this invention is to provide an apparatus in which the said disadvantages
are obviated. The invention consists in the special constructions and method of
manufacture hereinafter described.
Referring to the drawings left with the Provisional Specification.
Figure 1 shows one form of said apparatus, partly in elevation and partly in
section.
Figures 2. 3 and 4 represent the burner of the same in longitudinal section, in
cross section, and in plan respectively.
Figure 5 shows a plate from which the burner tube can be constructed.
The burner tube is fixed air tight upon the upper part of the tube a rising from
the receptacle. The said tube 6 is provided underneath with side openings and above
with a wide ring plate or dish-shaped part c upon which latter the flame distributor e
is placed either loosely or attached or secured in any convenient method. The upper
end of the tube a is closed and provided with narrow apertures or burners screwed
thereinto for the fuel.

page_text: The special form and arrangement of the burner tube & constitutes an important
part of the invention. The side openings are conveniently arranged in a wider
portion of the tube. For the preparation of such a tube a plate shaped as shown in
Figure 5 is preferably made use of. As may be seen from the drawing the plate is
provided by rolling or otherwise with a bent piece d extending from the one side to
the other and having numerous cross slits made for instance by sawing or cutting
across said bent portion. This plate is then rolled together in the direction of the
bend and the edges of the same firmly attached to each other by brazing or soldering,
so that the plate is formed into a tube with the openings around the saine. On
account of the bending of the plate the slits aforesaid are widened out between the
intervening pieces of the plate and form thereby without further operation the side
openings of the burner tube. The bent out piece may have any desired shape.
In Figure 5 is indicated on the right hand side two optional forms of the bent out
piece the one shown in black lines, the other in dotted lines. This burner has the
advantage that the air is first heated before the same arrives in the flame whereby the
combustion is more complete and the heat greater than with the burners of usual
description.
The invention consists moreover in improvements in the pamping mechanism
whereby air is forced into the reservoir. This arrangement is illustrated in Figure 1.
The pump cylinder consists as usual of a tube one end of which is firmly attached
to the reservoir through which it passes to the opposite side and being there secured
in a sleeve g also fixed to the side of the reservoir. At this end the tube is provided
with a bottom in the midst of which there is an escape hole. Against this opening a
stopper his pressed by means of a spring k placed in a narrower part of the said
sleeve g the said spring pressing against a cover i screwed on to the narrower part of
the sleeve. The plunger I has no valve, but only an opening which communicates by
means of a tube running lengthwise through the whole of the pump rod m with the
outer air so that air can pass into the space between the plunger and the bottom of
the cylinder. When the plunger is pushed in the outer opening of this tube is closed
by the thumb so that the air cannot pass out, but will be pressed through the opening
in the bottom of the reservoir. Between the sleeve y and the pump cylinder f
sufficient space is left to admit the air. By the said construction of the pump it will
be cheaper to manufacture, more reliable in its working and if the valve should get
out of order the same can be taken out and mended by simply screwing off the cover i.
The cup o which is filled with spirit as usual when the apparatus is to be set going in
order to heat the burner by means of the spirit flame, is in this construction so
arranged upon the reservoir that the same cannot become too-hot, it only becomes so
hot that the fluid is driven up the burner tube by means of the pressure generated in
the reservoir and there volatilised, the gases or vapours escaping through the burner
are immediately kindled by the spirit flame itself so that it is not requisite to specially
light the main flame.
The above described construction of the burner and the method of carrying the
same into effect has the special advantage that the side openings of the bottom part do
not diminish the section of the metal and by this means an efficient conduction of the
heat to the upright tube for the liquid fuel is obtained.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what
I claim is :
1. In a wickless heating apparatus for liquid fuel, a burner having the portion in
which the openings for the air are to be found made so much wider than the rest of
the burner tube that the cross section of metal between the said openings is
substantially the same as in the other part of the burner substantially as and for the
purpose set forth.
2. The method of manufacturing the burner mentioned in Claim 1 consisting in
forming a plate with a bent portion extending from one side to the other, making slits
across said bent portion, then rolling the plate together in the direction of the said

page_text: bent portion so as to form a tube with openings distributed around the same and
finally securing the edges together by brazing, soldering or the like substantially as
set forth.
3. In a wickless heating apparatus for liquid fuel, a pump forcing air into the
receptacle provided with an opening lengthwise through the whole of the pump rod
substantially as and for the purpose set forth.
Dated this 15th da L
1007
W. P. THOMPSON & Co.,
Of London, Liverpool, Manchester, and Birmingham,
Patent Agents for the Applicant.