IMPROVEMENTS IN LAMPS FOR HEATING AND LIGHTING FURPOSES AND IN COOKING AND EVAPORATING APPARATUS APPERTAINING THEBETO
Year: 1869

page_text: LETTERS PATENT to Carl Ostlund, of Stockholin, but at present of
No. 2, Chiswell Street, Finsbury Square, in the County of Middlesex,
for the Invention of "IMPROVEMENTS IN LAMPS FOR HEATING AND LIGHTING
FURPOSES AND IN COOKING AND EVAPORATING APPARATUS APPERTAINING
THEBETO."
Sealed the 30th July 1869, and dated the 3rd June 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, ], CARL.
OSTLUND, of Stockholm, but at present of No. 2, Chiswell Street, Finsbury
Square, in the County of Middlesex, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS
IN LAMPS FOR HEATING AND LIGHTING PURPOSES AND IN COOKING AND EVAPORA-
TING APPARATUS APPERTAINING THERETO," and have petitioned Her Majesty
to grant unto me, my executors, administrators, and assigns, Her Royal
Letters Patent for the same, and have made solemn Declaration that
.I am the first and true Inventor thereof.

page_text: NOW KNOW YE, that 1, the said Carl Ostlund do hereby declare
that the following Complete Specification, under my hand and scal,
fully describes and ascertains the nature of the said Invention, and
in what manner the same is to be performed, in and by the following
statement:-
My Invention consists, firstly, in lamps for heating and lighting
purposes, employing paraffin and similar hydrocarbon oils as the burning
material. The peculiar feature in them all is the arrangement of the
air or draught tube which passes through the body of the oil chamber
thus keeping the oil cool; the wick fits on the outside and may be
raised and lowered in any convenient and well known manner, such as
for instance by turning a small pinion pressing with its teeth into the
meshes of the wick. The oil chamber is continued down in the shape of
a tube surrounding the air tube, and a tube fitting in a socket provided
on the top of the oil chamber (which latter may conveniently be made
of glass) is continued upwards surrounding the air tube and serves in
some cases as a regulator for the flame by being raised or lowered
instead of the wick in any convenient and well known manner.
At the
top of the air tube the space between that tube and the outer tube is
made suitable for the thickness of the wick. The air tube and the top
of the outer tube are made of round, or oval, or similar section, and
may both be made of metal. A short distance above the top of the air
tube the lamp has in most cases a burner plate with a hole situated
vertically over the air tube and of about the same size and shape; the
flame enters this hole and in burning draws air to support the combus-
tion both through the air tube and from the space left between the
burner and the burner plate. When applied to cooking, boiling, or
evaporating apparatus, the bottom casing of the same forms the burner
plate which may be formed flat, bell-shaped, or conical without in any
sensible degree altering the condition of perfect combustion obtained by
this burner and burner plate.
The second part of my Invention consists in the cooking apparatus
in connection with and heated by these burners (which latter for these
purposes may be arranged singly or in rows or clusters). It has in all
cases a lower outer casing, the bottom of which forms the burner plate
aforesaid; a chimney attached to or formed in the casing leads the
products of combustion away. Above this casing and wholly or par

page_text: tially immersed in the same is the lower compartment of the apparatus
itself containing water, milk, or other fluid for culinary purposes.
From the top of it a pipe leads up nearly to the top of the compart-
ment directly above the aforesaid compartment thus leading the steam
generated in the lower to the upper compartment which is intended to
cook by steam any animal or vegetable food contained in it. Two or
more such steam cooking compartments may be used, the steam
from the lowest or water compartment leading successively from thence
to the others. Each is separate from the other, each formed open at
the top, and each fitting into a recess of and forming the cover for the
next following lower compartment, the uppermost one being fitted with
a lid that will take off, for economising heat a readily removable casing
may be fitted over the steam cooking compartments. For making coffee
the apparatus is modified as hereafter to be described.
Referring to the Drawings, Figure 1 shows a cooking apparatus, and
Figure 2 another of a somewhat more complex form.
A is the oil chamber; B, the air tube continued down below the body
of it and surrounded by an outer tube which is a continuation of the
oil chamber. The outer tube D is here shewn conical; d is the bottom
of the heating chamber or casing and forms the burner plate; C is a
sight hole provided with a glass for observing the state of the flame; E
is the chimney; B is the water compartment from where a pipe A
leads the steam to the next following compartment. The apparatus may
conveniently be placed on a stand as shewn.
Figure 2 shews another apparatus having three steam cooking com-
partments B', B", B; it is shewn arranged for two or more burners
having one oil chamber in common; e is a casing placed over the
steam cooking compartments. Figure 4 shews a cooking or evaporating
apparatus made in one with the lamp; to deflect the flame against the
sides of the funnel, which is surrounded by the fluid to be boiled or
evaporated a deflector of porcelain or other suitable material is placed
in the funnel as shewn. This arrangement may be used as the steam
generator for model steam engines.
Figure 5 shews the apparatus for making coffee. The lower or water
compartment is supposed to be immersed in a heating chamber as shewn
in connection with the other apparatus. A funnel m is for filling in
the water and may be stopped with an ordinary cork; as soon as the
water boils the steam rises through the pipe a, through the two-way

page_text: cock, and thence through the pipe p to the bottom of the box h,
containing the ground coffee, through the strainer i; when the steam
in a couple of minutes time has acted sufficiently on the coffee the
cock is turned the reverse way to that shown, which will put the
coffee box, the pipe p, and the pipe », which leads to the bottom of
the water compartment in communication with cach other; the con-
sequence is that the steam in the water compartment, forces the hot
water from it into the coffee box through the strainer i, and over-
flowing into the compartment surrounding the coffee box in the form
of ready made coffee, which can be poured out through a spout in the
ordinary way. The "grounds" are retained in the coffee box by a
filtering cloth covering the top.
Figure 6 shews a lamp for lighting purposes, but without the stand.
In this case the air is supplied partly through the air tube b and partly
through perforations in the casing r on the top of the oil chamber;
the burner plate is here shewn bell shaped; q is a glass fitted over the
burner. This lamp may be used as a lanthorn, and the funnel may be of
glass or metal.
Figure 8 shows a small lamp, which is recommended for its simpli-
city. It is made without the burner plate. In this case the outer
tube round the air tube serves as a regulating tube, and can be raised
or lowered in any well known way. The regulating tube is formed
dish shaped, below to catch any oil that might overflow from the wick;
a small hole may be provided for leading it back into the oil chamber.
Though I have found these burners, because of the cheapness of con-
struction and that of the burning fluid mentioned, to be preferable, in
an economical point of view, yet I do not confine myself to them nor
to the burning materials used for heating the cooking and evaporating
apparatus herein described, as obviously other means and material may
be used.
Having thus described the nature of my Invention and the manner of
carrying it into effect, I hereby declare that I claim as my Invention,-
First. The construction of the lamp or burner substantially as set
forth.
Secondly. The construction of the cooking apparatus for general
culinary purposes and of the coffee-making apparatus or any mere
modification of any of them.

page_text: Thirdly. The burner plate as described in connection with the afore-
said lamps, and the aforesaid cooking and evaporating apparatus, sub-
stantially as set forth.
In witness whereof, I, the said Carl Ostlund, have hereunto set
my hand and seal, this First day of June, in the year of our Lord
One thousand eight hundred and sixty-nine.
CARL OSTLUND. (L.s.)