Improved Construction and Means of Hermetically Closing Receptacles for Preserved Provisions.
Year: 1892

page_text: Date of Application, 4th June, 1892-Accepted, 1st Oct., 1892
CUM LEID SPECIFICATION.
Improved Construction and Means of Hermetically Closing
Receptacles for Preserved Provisions.
I, LOUIS ARTHUR BONNAMY, of 38, Cassland Road, South Hackney, in the
County of London, Commission Agent, 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
My invention relates to a certain improved construction and means for hermetically
closing receptacles for preserved provisions, and has for its object. to effectually
prevent the access of air thereinto, to prevent injury to the contents by contact
with the closure, and to afford simplicity and ease in opening the receptacle.
At present according to usual methods, metallic caps or covers are employed for
such receptacles, which have a more or less injurious effect on the contents.
According to my invention the whole of the receptacle and cover is or may be
made of glass, earthenware or other uninjurious substance, thereby ensuring the
most healthy preservation of the contents, and also the portion of the closure in
contact with the contents presents an uninjurious surface.
In order that my invention may be more clearly understood, I will describe it in
reference to the accompanying drawings in which
Fig. 1 is a vertical section of a receptacle made in accordance with my invention,
Fig. 2 a perspective view of the clasp used for closing the receptacle,
Figs. 3 and 4 are respectively perspective and side views of part of receptacles
having my invention applied thereto, and
Fig. 5 is a perspective view of closing ring hereinafter explained.
A is the receptacle, at the mouth of which is formed a collar G, the lower surface
of which, g, is slightly bevelled upwards; the upper surface g at its outer part
is horizontal or practically so; and at its inner part a rim g² is formed.
B is the
cover of such shape as to project for a suitable distance into the receptacle as shown.
Its rim is slightly bevelled downwards on its upper surface band in its lower
surface is formed an outer groove D which may have one or more concentric ribs
if desired; and an inner groove d may be formed corresponding with the rim g³,
but this is not of importance. The groove D is adapted to receive a ring N,
Fig. 5, of rubber or other flexible and compressible substance as hereinafter
shown. This ring N is covered on its inner edge and for part of its width with
tinfoil or other non-injurious substance, M. For securing the fastening a clasp H,
Fig. 2, is employed; it is made of tin plate or other suitable resilient metal and
has at its top and base inwardly projecting rims or flanges H', H', extending the full
length of the clasp, but cut away at one or more points L, L, so as to enable it
to be readily bent back and opened as illustrated in Fig. 2. In one of the free
ends a tongue I is stamped out and the other end has a prolonged tongue K in
which is cut a slot J.
The operation of closing a receptacle made as above is as follows:-
The flexible ring N is first placed on the surface g' of the collar G, or in the
groove D of cover B, and the cover B is then put on, the rim o² coinciding with
the groove d if the latter is used. Then pressure is applied to the cap by a lever
or by other suitable and convenient means, whereby the ring N is compressed
between the surface g' and the groove I), thus forming an airtight joint. While
under pressure the clasp H is presented half opened and fitted round the collar and
cover so that its rims H', H' grip and hold 'the bevelled surfaces and of the
cover and collar B and G firmly together; then the tongue I is inserted through
the slot J and bent backwards as shewn at Figs. 3 and 4, effectually and hermetically
closing the receptacle, which is now ready to go through the ordinary processes of

page_text: heating, steaming, &c., if required. The tinfoil on the inside of the rim, M, prevents
the contents of the receptacle coming in contact with the rubber or other substance
of which it is made.
To open the receptacle it is only necessary to bend back and unhook the tongue I
from the slot J, when the clasp and cover may be easily removed and access to the
contents obtained.
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 receptacle for preserved provisions with a collar such as G and a cover B,
both having surfaces, rims and grooves formed and disposed substantially as set
forth and the means of effecting an hermetic closure consisting in the use of a
flexible ring N and a bendable metallic clasp H with flanges H, all substantially
as and for the purpose above stated.
2. The use in combination with a receptacle for preserved provisions such as
above described and its cover of an intervening ring N of flexible material covered
on its inner edge with a non-injurious substance such as tinfoil, as and for the
purpose set forth.
3. The hereinbefore described improved construction and means of hermetically
closing receptacles for preserved provisions substantially as set forth.
Dated this 4th day of June 1892.