Improvements in or relating to Food and similar Containers.
Year: 1897

page_text: Date of Application, 4th Aug., 1897-Accepted,.4th Sept., 1897
}
COMPLETE SPECIFICATION.
Improvements in or relating to Food and similar Containers.
AUGUST WALLMEYER of 12 Erfurter Strasse Gotha, in the Empire of Germany,
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 :-
The present invention relates to a double walled-vessel between the walls of which
a hot liquid may be introduced for the purpose of keeping food warm, as during
transport, or with a cold liquid or substance for keeping the contents cool.
The improved vessel is shown in the accompanying drawing in
Fig. 1 in sectional elevation and in
..
Fig. 2 in horizontal cross section and consists preferably of a bucket-shaped vessel 2
with a rim or edge 3 projecting inwardly and provided with a pivotted handle 1 for
carrying purposes.
In this vessel 2 is inserted a smaller vessel 5 provided at the top with a rim or
flange 4 resting on the rim 3 this smaller vessel being soldered or otherwise secured
to the vessel 2 at the edge of the rim.
The space 6 between these two vessels 2 and 5 is filled with a hot fluid so that the
food or liquid placed in the inner vessel 5 are thus kept warm for a long time.
By using the vessel described the irksome and unpleasant practice of wrapping up
the vessel intended to carry the warm foods or liquids with cloths wadding and the
like or with other bad heat conducting materials is avoided.
An opening 7 is provided in the rim 4 of the inner vessel 5 for the purpose of filling
the intermediate space 6 with hot liquid by means of a funnel or the like.
8 is the cover which closes the improved receptacle as tightly as possible.
Fig. 3 shows an elevation partly in section Fig. 4 a similar cross section of one
forin of construction of the vessel with a bayonet closing device in such a manner
that both vessels 2 and 5 instead of being soldered or otherwise permanently secured
together are detachably connected the cover 8 being also preferably secured by means
of a bayonet closing device.
As may be seen from Figs. 3 and 4 the outer vessel 2 carries resting on its upper
edge 2ª the smaller and shorter inner vessel 5 intended for the reception of food etc.
which inner vessel is provided with a rim 11 interrupted or cut away at 9 and 10 and
projecting downwards over the edge 2 of the vessel 2.
This rim 11 .e. that portion of it which projects downwards is provided with
horizontal slots 12 at the parts adjacent to the interruptions 9 and 10 on opposite
sides of the vessel in which slots the handle plates 13 and 14 of the outer vessel 2
engage when the inner vessel 5 is inserted and partly rotated in the outer vessel a
secure and intimate although detachable connection being thus obtained between the
two vessels 2 and 3.
The heating liquid is contained between these two vessels and in this form of
construction as in the device illustrated in Figs. 1 and 2 and may be admitted
through an opening 7 (Fig. 4) arranged in the rim 11.
A packing rim 15 arranged between the rim 11 and the lid 8 secured thereon by

page_text: means of a bayonet closing device close both vessels 2 and 5 and at the same time the
opening 7 tightly from the outside.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. A double walled vessel for the purposes described consisting of two vessels one
contained within the other and secured together the outer vessel provided with a
handle being intended to receive the heating or cooling liquid or material and the
inner vessel serving for the reception of the food or liquid the heating or cooling
liquid or material being introduced through an opening in the rim of the smaller
vessel and a lid 8 securely covering and closing both vesssels substantially as
described.
2. A construction of double-walled vessel of the character described in which the
vessels suspended one within the other are secured together at the rim 11 by means
of a bayonet closing device 9, 10, 12, 13, 14 and are closed by means of a lid 8
secured to the inner vessel. 5 by means of a bayonet joint 16 and having a layer of
packing 15 inserted between the lid and rim substantially as described.
Dated this 4th day of August 1897.