Improvements in Food Heaters or Warmers.
Year: 1891

page_text: Date of Application, 21st July 1891
Complete Specification Left, 18th Mar., 1892-Accepted, 23rd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Food Heaters or Warmers.
I, Dr. HENRI BARRÉ of 16 Rue Drouot, Paris in the Republic of France,
do hereby declare the nature of this invention to be as follows:-
This invention has for its object a new arrangement of vessels such as receptacles
for broth or gruel, coffee pots, teapots, etcetera, whereby the liquids contained in
such vessels are kept warm, the vessels being arranged in such a way that the
lamp or night-light, which keeps up the heat, forms, so to speak, part of the vessels
themselves, so that they may be moved or carried about, in an inclined position,
and the vessel be even emptied down to the last drop, without any fear of upsetting
the lamp or night-light and so that the combustible substance which feeds the latter
cannot escape. For this reason this new arrangement of pots or vessels is called
"System of autothermic vessels."
If these
A heater or warmer formed according to this invention is composed of two
principal parts separated by a bottom plate, the upper part being for holding the
liquids which are to be heated or kept warm, the lower part containing the lamp
or night-light. The upper part may be of various forms, a cylindrical or conical
shape will be found a good one, and its capacity may vary, it may be smaller, equal.
or even larger than the part containing the lamp or night-light. The part
containing the lamp or night-light should be similar in form to that of the other
part, so that it is not displeasing to the eye; it may be about 8 centimetres high.
If the lamp or night-light which it is to contain be fitted with a key or with any
other device for directly regulating the flame, its vertical sides may be perforated
with numerous holes. If, on the contrary, the lamp or night-light is not fitted with
a key or other direct method of regulating the flame, the combination of holes for
the admission and the exit of the air must be a special one.
For this purpose, &
certain number of holes is made in the upper or front part of this lower compart-
ment with the object of giving sufficient light at night, to enable a person to pour
out some of the contents of the heater or warmer for drinking, for instance, but not
allowing sufficient air for the maintenance of the flame. One or more larger
orifices are made in the lower part of the side of the lower compartment.
latter were always open, the flame of the lamp or night-light would soon become
too intense, but they can be diminished by means of a movable plate placed usually
within the compartment, and which may be actuated by means of a little button or
otherwise. This plate occupies the whole or part of the lower circumference of the
compartment, according as the orifices are made all round or only at one point.
This combination of holes allows the flame to be regulated perfectly whilst
maintaining it at any height, which may be desired, and thus the necessary
quantity of heat may be given. The flame may also be extinguished by closing the
lower holes almost completely, the oxygen of the air not entering then in sufficient
quantity to maintain combustion. When this method of regulating is adopted, the
lamp or night-light is inserted from below, into the lower compartment, which, for
this purpose, has a double false bottom and which becomes complete when the lamp
is introduced. It is evident that the method of regulating the lamp or night-light
may vary. Several curved strips could be employed to prevent the lamp from falling
inwards, two other movable strips held by means of pins serve to support this lamp
from below when it has been inserted in the vessel. A simple rotating motion
given to these strips allows of the lamp being disengaged when desired.
Finally, the "autothermic vessels for broths, etcetera, may have a handle, a
spout, and a lid, in order to render the apparatus more commodious and
comfortable.

page_text: It is evident that the lamps or night-lights employed for these "autothermic
vessels "must be themselves of such a form that the combustible liquid feeding
them cannot escape when they are completely reversed.
Dated this 20th day of July 1891.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Food Heaters or Warmers.
I, HENRI BARRÉ, Doctor, of Saint Maurice, in the Department of Orne,
France, 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 improved receptacles or vessels, such as urns or pots for
keeping warm coffee, tea, ptisanes or medicinal drinks, and other liquids contained
therein, and which are so constructed that the special lamp or night light which
heats same shall form so to speak part of the receptacles themselves, so that they
can be moved, carried about, inclined, and even emptied of the whole of their
contents without it being necessary to take any notice whatever of the lamp or
night light, and without any portion of the combustible material it consumes
escaping.
The drawing shows a vertical section of a receptacle or vessel for ptisanes or
medicinal drinks embodying my invention.
The receptacle or vessel consists of two principal parts, separated by a
and
partition F, the upper one A serving to receive the liquid to be kept warm,
the lower one B enclosing the lamp or night light.
The part A is usually made cylindrical or conical, and its capacity may vary.
The exterior form of the part B should be made to suit that of the part A. It is
about eight centimetres in height. If the lamp or night light it is to contain is
fitted with a key or other means for regulating the flame, its vertical wall may be
pierced with a certain number of holes. If on the contrary the larap or night light
is not provided with means for regulating the flame, as is the case in the one shown
in the drawing, a certain number of openings X, X, are pierced in the front of the
upper part of the compartment, so as to give sufficient light, but not, however,
admitting sufficient air to support combustion. Therefore, a number of larger
openings N, N, are pierced in the lower part thereof. If the latter were always
full open the flame would be too fierce, and they are therefore arranged so that
they can be adjusted by means of a movable plate P situated inside the com-
partment B, and which can be moved by a knob M. This plate may extend either
right round or round any portion of the contour of the lower part of the com-
partment, according to the position of the openings N. This combination of
openings enables the flame to be adjusted and kept to the necessary height to
produce the heat required. The flame may be extinguished by nearly closing the
lower openings completely, so that the oxygen of the air does not reach the flame
in sufficient quantity to support combustion.
When this method of regulation is adopted the lamp or night light is introduced
at the under side of the receptacle, which for this purpose is provided with a double
false bottom L. The method of fixing the lamp may vary. In the drawing several
bent bladest prevent the lamp falling inside. Two other movable blades R, R,
carried by pins u, u, serve to support the lamp on the under side when it is intro-
duced. A simple rotary movement of these blades enables the lamp to be detached
at will.
The self heating receptacles are provided with a handle C, a spout D, and a
Cover E

page_text: With regard to the lamp, night light, or heater placed in the part B of the
apparatus as shown, same consists in a metallic box a, of which the top wall m is
forced inwards, so as to diminish the depth of such box at the centre, and to
shorten the distance which the oil or other combustible material has to travel in
order to be burnt at the top of the wick. To this upper wall is secured a tube n
enclosing a wick o, and near which holes are pierced for the admission of air to.
the box. The upper wall further carries a kind of collar or flange b which serves
to retain any drops of oil which may escape when the night light is turned from its
normal position; such drops of oil can run back into the lamp through the
openings s. The contents of the lamp is regulated so that when in a vertical
position the liquid remains above the openings s.
.
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 :-
A self heating receptacle or vessel for keeping liquids contained therein warın,.
characterized by the combination of any suitable holder or container to receive the
liquid, and of a lamp or night light constituting the heater situated beneath it, and
either permanently or temporarily forming so to speak part of the body of such
receptacle or vessel, the whole combined together in such a way that the receptacle
or vessel may be shaken, inclined, and even turned completely upside down, without
causing the lamp contained within it to go out or the combustible to run out, all.
substantially as described and shown.
Dated this 18th day of March 1899
ALLISON BROS.,
Agents for the Applicant..