Improvements in or relating to Closing Devices for Food and other Receptacles.
Year: 1893

page_text: Date of Application, 13th Nov., 1893
Complete Specification Left. 9th Aug., 1894-Accepted, 15th Sept., 1894
Improvements in or relating to Closing Devices for Food and other
Receptacles.
I, JEAN LEEMBRUGGEN of 9 P. C. Hooftstraat, Amsterdam, in the Kingdom of
Holland, Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
In the Specification of Letters Patent granted to me dated 29 November 1892
No. 21821 I have described a construction of receptacle for food or other substances
in which inter alia the closing device for the receptacle is in the form of a cover
located within the top of the receptacle and formed with a domed or raised central
portion and with an outer rin that is caused to bear upon a rib or flange within the
receptacle, or upon packing material placed between the said rim and rib or flange,
by a downwardly bent spring the central portion of which bears upon the domed
portion of the cover and the ends of which are rigidly held by the wall of the said
receptacle.
Now my present invention has reference to further improvements in or relating
to closing devices of the kind referred to for food and other receptacles, and it has
for object to facilitate the insertion and removal of the packing material, and to
obviate liability of its being mislaid when not in place within the receptacle.
For this purpose I form the cover at or near the junction of its central raised or
domed portion with its rim portion, with a circumferential groove or recess adapted
to receive and hold the ring or washer of packing material so as to form therewith
a combined cover and packing ring or washer that can be inserted within and
removed from the receptacle as one piece.
My invention may be applied to covers of circular, square or other form in-plan,
and the ring or washer may advantageously be of elastic material such as india
rubber.
.:1 ני.
Nawaban 1902
J. LEEMBRUGGEN.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
o Improvements in or relating to Closing Devices for Food and other
Receptacles.
I, JEAN LEEMBRUGGEN, of 9 P. C. Hooftstraat, Amsterdam, in the Kingdom of
Holland, Civil Engineer, 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
5 and by the following statement :-
In the Specification of Letters Patent granted to me dated 29 November 1892
No. 21821 I have described a construction of receptacle for food or other substances
in which inter alia, the closing device for the receptacle is in the form of a cover
located within the top of the receptacle and formed with a domed or raised central
0 portion and with an outer rim that is caused to bear upon a rib or flange within the
receptacle, or upon packing material placed between the said rim and rib or flange,

page_text: by a downwardly bent flat spring the central portion of which bears upon the domed
portion of the cover and the ends of which are rigidly held by the wall of the said
receptacle.
Now my present invention has reference to further improvements in or relating
to closing devices of the kind referred to for food and other receptacles, and it has
for object to facilitate the insertion and removal of the packing material and to
obviate liability of its being mislaid when not in place within the receptacle, as I
will now proceed to explain with reference to the accompanying drawings in
which,
Fig. 1 is a vertical section, showing to an enlarged scale, part of a combined
cover and packing ring according to this invention.
Fig. 2 is a vertical section of the upper portion of a circular receptacle fitted with
such a combined cover and packing ring and with a spring for forcing and holding
the same in place; and
Fig. 3 is a plan therefor.
Fig. 4 is a plan, showing the upper portion of the receptacle without the combined
cover and packing ring.
1 is the upper portion of a circular sheet metal receptacle provided with an
inwardly projecting rim or flange 2 upon which the flange 4 of a cover 3 is pressed
by a bent flat metal spring 6, the central portion of which rests upon the raised
central portion of the cover and the ends of which are caused to take into two
downwardly inclined grooves 5 5*, as in one of the constructions of receptacle shown
in my said former Specification. 7 is a ring or washer of suitable packing material,
Buch as india rubber, arranged between the flange 2 and the rim 4 of the cover 3
and which will be subjected to a gradually increasing pressure as the spring 6 is
moved into its closed position, in consequence of the ends of such spring being moved
downward by the action of the said grooves 5 5*.
To facilitate the insertion and removal of the ring or washer 7 and to obviate
liability of its being mislaid when not in place within the receptacle, I provide the
cover 3 at or near the junction of its central and rim portions, with a circumferential
groove or recess 3* that is produced by pressing or otherwise suitably shaping the
single piece of sheet metal of which the central and rim portions of the cover are
made and is adapted to partly receive and securely hold the said ring or washer 7
which is fitted therein so as to form therewith a combined cover and packing ring
that can be inserted within or removed from the receptacle as one piece.
To permit of easy insertion and removal of the spring 6, a part of the beaded
portion of the metal forming the groove 5 is cut away so as to form an opening
at 5 through which the spring is passed when being inserted or removed from the
receptacle.
When the cover 3 with packing ring is to be pressed upon the rim or flange 2
not only by the action of the spring 6, but also by the pressure of the external
atmosphere, caused by setting up a vacuum within the receptacle as well under-
stood, I provide the said receptacle with an opening 1" at a point immediately above
the shoulder 2 through which a suitable device, such as a knife blade, can be passed
and inserted between the said rim or flange 2 and packing ring 7 so as to slightly
raise the said ring and cover at one side and admit air to the receptacle, thereby
producing an equilibrium of pressure on the two sides of the cover and permitting
of the ready removal of the cover.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed 1 declare that what
I claim is
A combined cover and packing ring for a food or other receptacle comprising a
cover formed at or near the junction of its raised central and rim portions 3 and 4
respectively with a circumferential groove or recess 3* produced by pressing or
otherwise shaping the single piece of material constituting the said central and rim

page_text: portions, and a ring or washer 7 of packing material held partly within said
groove or recess, substantially as described and shown for the purposes specified.
Dated this 9th day of August 1894.
Аррисано
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.