An Improvement in Metal Canisters and Cases to Facilitate their Opening.
Year: 1898

page_text: Date of Application, 1st Jan., 1898
Complete Specification Left, 2nd Mar., 1898-Accepted, 31st Dec., 1898
PROVISIONAL SPECIFICATION.
An Improvement in Metal Canisters and Cases to Facilitate
their Opening.
GEORGE WISTON BAKER, Physician and Surgeon, 0, Acacia Grove, West
Dulwich, London, S.E., do hereby declare the nature of this invention to be as
follows:
This improvement relates to metal canisters and cases especially those which open
by means of a wire cutting or forcing its way through the metal at a given point
in the rim of the lid.
In this improvement I have a bead or jenny impression made on the inner
surface of the rim of the lid, preferably nearer the lower border than the upper,
into which a wire is inserted, the terminal end of which makes its exit from the
inner to the outer side of the rim of the lid, through a split or perforation which
is made of such a size as may be considered advisable, the proximal end of the
wire is turned on itself to form a hook shape, and this is jammed either in the
split or in a small perforation at the required point nearer the lower border, the
wire is then run into the groove or impression, on the inner surface of the lid,
heretofore described, and comes from the inner surface of the rim of the lid to
its outer surface, the lid is then ready to place on any body of its corresponding
size and is soldered in the usual manner. The opening of this soldered tin is
effected by means of this wire, The looped end may be either hung on a hook
or the like or a pencil, key, or piece of wood, may be put through the loop, and
the necessary pull made in the right direction.
My improvement may therefore be briefly described, as being a groove made
on the inner surface of the rim of the lid, in which a wire is placed, which is to
cut or force its way through the metal at the required or desired point, leaving
a sufficient width of rim on the lid that is separated by the cut, as to act as a
valuable and efficient cover after the tin has been opened.
Dated this 1st day of January 1898.
An Improvement in Metal Canisters and Cases to Facilitate
their Opening.
I, GEORGE WISTON BAKER, of 6, Acacia Grove, West Dulwich, London, 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 metal canisters and cases which are opened by means

page_text: of a wire cutting its way through the metal at a given point in the rim of
the lid.
In such canisters as heretofore constructed the canister itself has been formed
with an external groove for the reception of the said cutting wire. According
to my present invention I dispense with the necessity of making any special
provision on the canister itself for the reception of the cutting wire by making
the groove for the reception of the wire on the inner surface of the rim of the lid,
such groove being formed by bulging the metal outwardly so as to form an
external bead; and the groove being preferably made at a point near the edge
of the rim.
Thus the lids can be prepared with the wire fitted to them, and can then be
used in connection with any ordinary canister or case that is of a corresponding
diameter, so that by means of my present improvement the manufacture of such
canisters and the use thereof for preserving food is considerably facilitated.
The accompanying drawing shews the mode of carrying my said invention into
effect. Fig. 1 shews an elevation of a lid, partly in section, Fig. 2 shews a plan
of the same, Fig. 3 shews a part section of a canister with the lid fitted on,
Fig. 4
shews a portion of the lid after it has been cut through by the wire.
The lid A has a circular groove a formed by bulging on the inner surface of
its rim, thus forming a projecting bead on the outside.
Into this groove is inserted the cutting wire B. The bead a has a small
V-shaped notch cut in it at one point, thus forming an opening a³, to the one
edge of which is attached the hook-shaped end of the wire B, while the other end
passes out at the other edge and is there formed with a loop.
The opening a² is closed with solder after the insertion of the wire, thus
securing this 'in position.
The lid having been fitted on the canister C, it is secured by soldering round
the lower edge; when the canister requires to be opened, a pull exerted on the
looped end of the wire B will cut through the bead of the lid so that this can be
removed; it is thus left with a rim of some depth as shewn at Fig. 4 so that it
can afterwards be used as an efficient cover for the canister.
It will be seen that if desired the lids A can be made and stored without
having the wire inserted in the groove as the wire can be readily threaded into
the groove after the lid has been fitted on the canister.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed, I declare that what
I claim is;
1. Constructing the lids for metal canisters or cases that require to be cut open
by means of a wire, with a circular groove on the inner surface formed by
bulging the metal outward, such groove being fitted, with a wire one end of which
is fixed while the other end passes out through a hole or slit in the groove, which
wire serves to cut through the groove for opening the canister, substantially as
described.
2. A lid for a canister or case having a groove formed on its inner surface for
the reception of a cutting wire, such groove being formed near the lower edge of
the rim of the lid so as to leave a sufficient depth of rim when cut through for
the lid to act as an efficient cover to the canister or case, substantially as
described.
שי
1
1000
ABEL & IMRAY,
Agents for the Applicant.