Improvements in Closing or Stoppering Vessels Containing Preserved Substances, and other Vessels requiring to be Hermetically Closed.
Year: 1897

page_text: Date of Application, 23rd Feb., 1897-Accepted, 17th Apr., 1897
COMPLETE STEIFICATION.
Improvements in Closing or Stoppering Vessels Containing
Preserved Substances, and other Vessels requiring to be
Hermetically Closed.
We, CLAUS BOMHOFF EVENSEN, of Arendal, in the Kingdom of Norway,
Consul, and NILS PETER ERIKSEN, of Sogndal, Indre Sogn, in the Kingdom of
Norway, Saddler, 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 :--
Our invention relates to improvements in the closing or stoppering of vessels
containing preserved substances and for other vessels requiring to be hermeti-
cally closed whereby the stoppers can be moved up and down in the said vessels
and hermetically secured in any position in which they may be placed.
The advantage of such a stopper is that we can remove a part of the contents
from a hermetically closed box and afterwards preserve the remainder as hermetically
as before.
To effect such a tight closure the stopper must be constructed in such a manner
that it contains in itself all the means necessary for the hermetical closing. It
must be adapted to be expanded so that it shall form a tight joint against the walls
of the vessel when closing the same and contracted when requiring to open the
vessel. This expansion and contraction must be easily effected from above and
the means for causing this action must be placed only in the stopper.
This we accomplish by a stopper consisting of several parts, the upper and
lower parts of which are of hard material with an interposed part of elastic
material.
By pressing the upper and lower parts towards each other by means of screws
or the like, the interposed elastic material is forced outwards and compressed
tightly between the edge of the stopper and the interior of the vessel, by which an
absolutely hermetical closure is obtained.
In the accompanying drawing :-
Figure 1 is an elevation of a cylindrical vessel:
Figure 2 is an elevation of a stopper for the same constructed according to our
invention and shewn with its parts screwed together:
Figure 3 is an elevation of the top piece of the stopper:
Figure 4 is a similar view of an intermediate piece: and,
Figure 5 is a similar view shewing the bottom piece of the same:
Figure 6 is a section of part of the top piece :
Figure 7 is a section of part of the intermediate piece, and,
Figure 8 is a section of part of the bottom piece.
The stopper is constructed of two iron plates a and c and of an intermediate iron
ring the latter being provided with a vertical flange on its upper and lower side,
which flanges correspond with and can pass respectively into the recesses e and fin
the plates a and c so that these three iron parts can make joint with one another
when screwed together. The plates a and c have also each a flange or projecting
part 9 and h respectively and these flanges are so shaped that they can pass into
recesses in the ring b.
Around the flanges g, d, d, h on the parts a, b, c india-rubber rings i, k, k, l are
placed, one of such rings being placed around a, two around band one around c.
When the parts are pressed together the rubber rings will be forced out over the

page_text: periphery of the stopper against the interior of the vessel and thereby cause a
hermetic closing.
Figure 2 shews a stopper screwed together:
is figure, 1 is the top piece a.
2 the rubber ring i thereon.
3 the upper rubber ring k on the intermediate piece b.
cup piece u
2 the rubber ring i thereon.
3 the upper rubber ring k on the intermediate piece b.
4 the intermediate piece o.
5 the lower rubber ring k on the intermediate piece b.
6 the rubber ring 7 on the bottom piece c.
7 the bottom piece c.
"
In the middle of the stopper is a pipe m (Figure 5) provided with a cock n and
serving as a discharge pipe for the air when the stopper is being put in place after
which the cock n is closed.
In the example described and shewn in the drawing we have arranged three
rigid pieces a, b, c and four superposed elastic rings i, k, k, I to obtain a reasonable
height and a good guiding of the stopper. We may, however, of course use only two
rigid pieces with one interposed elastic piece or more rigid pieces with more inter-
posed elastic pieces according to whether a light or a heavy stopper or a large or a
small one is required.
The screwing together, the expansion and the contraction of the stopper is
effected by means of screw threaded studs o. In small stoppers these screw-studs
can be provided with nuts p for operating by hand. On large and heavy stoppers
we can use suitable means to allow of levers or engine power being used for
screwing the parts together.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. A stopper for vessels requiring to be hermetically closed consisting of a
number of rigid parts, having interposed layers of elastic material and provided
with suitable means for pressing the parts towards one another and thereby forcing
the elastic material outwards so as to press the circumference of the stopper against
the interior of the vessel, in which the stopper is placed, substantially as herein-
before described, and illustrated in the accompanying drawing.
2. A stopper for vessels requiring to be hermetically closed of the kind described
in Claim 1, wherein the rigid parts consist of a top plate (a) a bottom plate (c)
and one or more intermediate plates or rings (b) all having flanges (g, d, d, h)
arranged in such a manner that the flanges of the intermediate plate or plates cau
engage with or pass into the recesses (e and f) formed by the flanges of the top
and bottom plates or, vice versa, the flanges on the top and bottom plates may pass
into recesses in the intermediate plate when the parts with their interposed elastic
material are pressed together, substantially as, and for the purpose, hereinbefore
described.
3. In a stopper for vessels requiring to be hermetically closed of the kind
described in Claims 1 and 2 the elastic material (ikk 1) annular in shape placed
around the flanges of the rigid plates and the bottom plate provided with screw
threaded pins (o) passing through all the parts above and which pins by means of
nuts or the like serve to press the parts of the stopper together, substantially as,
and for the purpose, herein before described.
4. In a stopper such as that herein described, for vessels requiring to be
hermetically closed, a discharge pipe (m) with cock (n),.substantially as, and for
the purpose, herein before described.
D
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.