An Improved Tray and Cover, Principally for Preserving Food.
Year: 1897

page_text: Date of Application, 3rd Dec., 1897
Complete Specification Left, 7th July, 1898-Accepted, 10th Sept., 1898
PROVISIONAL SPECIFICATION.
An Improved Tray and Cover, Principally for Preserving Food.
I, HUGO HELBERGER, of Thalkirchen, near Munich, in the Empire of Germany
Engineer, do hereby declare the nature of this invention to be as follows:
This invention relates to a tray and cover principally intended for preserving
food, giving an air tight closure to the cover, and thus a longer durability to the
food, by means of a liquid seal. The edge of the cover dips for this purpose into
a groove or hollow in the plate or tray, this groove being filled with water.
In order to allow the cover to be inserted and taken off, without air being
pressed out or drawn in under the edge of the cover by which the water is spilled
and moistens the food, the button or handle of the cover is not connected fixedly
with the cover as in the known covers of bells, but it can move with its hollow
shank upwards and downwards in a ring, connected fixedly with the bell.
For limiting this movement it has outside and inside a flange or collar. It has
also under the upper collar some holes.
As soon as the bell or cover is lifted, the handle first moves a little alone and
then moves the bell. Thus between the collar of the handle and of the bell there
is left a small space.
As the foot of the handle is hollow or provided with holes,
the air can pass unhindered into the bell or escape from the same.
ing the bell into the water groove there is no pressure on the air and on taking
it out the air is not rarefied, so that the water is not spilled.
When insert-
This handle must of course be constructed in such a manner that it closes air-
tightly without operation as valve.
The handle can also be fixed and provided with a valve, which is kept closed
generally by spring pressure: When one wants to lift the bell from the plate that
is to say, from the water groove, one presses the valve down when seizing the
handle, so that the air can pass in. When the tray or plate is again covered,
the valve must also be pressed down.
1
01 1
Dasambar 1907
An Improved Tray and Cover, Principally for Preserving Food.
I, HUGO HELBERGER, of Thalkirchen, near, Munich, in the Empire of Germany,
Engineer, do hereby declare the nature of this invention and in what manner
Price 8d.1

page_text: the same is to be performed to be particularly described and ascertained in and
by the following statement:-
This invention relates to a tray and cover principally intended for preserving
food, giving an air tight closure to the cover 6 by means of a liquid seal. Refer-
ring to the drawings hereunto annexed. Fig. 1 is a cross section, and Figs. 2
and 3 details of handle. The edge of the cover 6 dips for this purpose into a
groove or hollow c in the plate or tray a this groove being filled with water.
In order to allow the cover to be inserted and taken off without air being pressed
out or drawn in under the edge of the cover by which the water is spilled and
moistens the food, the button or handle d of the cover is not connected fixedly
with the cover as in ordinary covers, but it can move with its hollow shank
upwards and downwards in a ring e connected fixedly with the cover.
For limiting this movement it has outside and inside a flange and collar d².
It has also under the upper collar some holes d³.
As soon as the cover is lifted, the handle first moves a little alone and then
moves the cover. Thus between the collar e of the handle and the cover there
is left a small space.
As the foot of the handle is hollow or provided with holes,
the air can pass unhindered into the cover or escape from the same. When
inserting the cover into the water groove there is no pressure on the air and on
taking it out the air is not rarefied, so that the water is not spilled.
This handle is constructed in such a manner that it closes air-tightly.
The handle can also be fixed and provided with a valve g which is kept closed
generally by spring pressure. When one wants to lift the cover from the water
groove c, one presses the valve g down by the handle, so that the air can pass in.
When the tray or plate is again covered the valve g must also be pressed down.
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. An improved tray and cover with water sealed joint, in which when lifting
and replacing the cover, a valve is opened, allowing the air to enter or leave the
cover.
2. A form of construction of the cover as under Claim 1, in which the handle d
is arranged displaceable in the cover, and provided with projections d', as well
as holes d³, which latter become free when lifting the cover and effect the connec-
tion of the inside of the cover with the atmosphere.
3. A form of construction of the cover as under Claim 1, in which in or next to
the cover handle is arranged a valve g kept by a spring pressed upwards against
its scat, said valve when lifting or replacing the cover being opened by pressing
down the spring.
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C., London.