Improvements in Air-tight Cases and Canisters.
Year: 1890

page_text: Date of Application, 19th Nov., 1890
Complete Specification Left. 19 h Aug., 1891-Accepted, 19th Sept.. 1891
PROVISIONAL SPECIFICATION.
Improvements in Air-tight Cases and Canisters.
We, GEORGE GROUT, and BERTIE HALLETT, of No. 38 Great Russell Street,
in the Administrative County of London, Merchants and Manufacturers, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to improvements in air-tight cases and canisters, and has
more particular reference to sheet metal canisters in which such goods as cocoa are
packed, although it is to be distinctly understood that our invention is equally
applicable to all air-tight packages irrespective of shape or material.
In carrying the invention into effect, we make two covers or lids one of which
closes the package internally and the other externally.
The internal cover is of metal and has a metal seat to which it is soldered.
In addition to this, there is provision for the breakage of the soldered joint.
This provision may be of any suitable type, and we indicate as one which we find
practically successful, the use of a projecting ridge adapted to be used as the
point of effect of a lever, the fulcrum of which is in, or on, the edge of the
package.
The second, or external, cover is of the ordinary construction, and may be either
loose or hinged to the case.
Dated this 10th day of November 1800
PHILLIPS & LEIGH,
Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Air-tight Cases and Canisters.
We, GEORGE GROUT and BERTIE HALLETT, of No. 38, Great Russell Street,
in the Administrative County of London, Merchants and Manufacturers, 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 air-tight cases and canisters, and has
more particular reference to sheet metal canisters in which such goods as cocoa are
packed, although it is to be distinctly understood that our invention is equally
applicable to all air-tight packages irrespective of shape or material.
In carrying the invention into effect, we make two covers or lids one of which
closes the package internally, and the other externally.
The internal cover is of metal; and has a metal seat to which it is soldered.
In addition to this, there is provision for the breakage of the soldered joint.
This provision may be of any suitable type, and we indicate as one which we
find practically successful, the use of a projecting ridge adapted to be used as the
point of effect of a lever the fulcrum of which is in, or on, the edge of the
package.
In order that our invention, and the means by which the same is to be carried
into practical effect, may be thoroughly understood, we will describe them in detail,
referring in so doing to the accompanying drawing which is to be taken as part of
this Specification and read therewith.
Fig. 1 is a sectional elevation; Fig. 2, a plan; and Fig. 3, an elevation of a round
canister made according to our invention.

page_text: A is the canister; a, its internal cover; a', the seat of the latter to which it is
soldered or otherwise made fast; and a³, the flange by which it is prised off its seat
in the well known way. Any other type of internal airtight cover may be used.
It has hitherto been the custom to guard against the fraudulent removal of
the cover a by pasting a strip of paper bearing some inscription across the said
cover, and to the opposite sides of the canister. But such a strip might be replaced
after the cover had been replaced. Now, according to our present invention, we
provide a second or external cover B of the ordinary lift-off' type, and which fits
upon the top of the canister A in the ordinary way. bis the label or band which
is gummed to the body of the canister and over the flange b¹ of the cover B in the
well known way.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we déclare that what
we claim is :-
:-
The combination of case or canister, internal cover, external cover and label or
band, as set forth.
..
ليمي
1
C
.
1001
PHILLIPS & LEIGH,
25, Southampton Buildings, Chancery Lane, W.C.,
Agents for the Applicants.