An Improved Method of Hermetically Sealing Tin Canisters and the like, and Means for Opening the same.
Year: 1893

page_text: Date of Application, 25th Jan., 1893
omplete Specification Left, 17th June, 1893-Accepted, 22nd July, 1893
PROVISIONAL SPECIFICATION.
An Improved Method of Hermetically Sealing Tin Canisters and
the like, and Means for Opening the same.
I, GRORGE WILLIAM DAVEY, of Bannerleigh, Leigh Woods, Bristol,
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention relates to hermetical sealing of tin canisters and the like.
According to this invention a strap or band of lead, tin foil or other suitably
soft metal is made to surround the vessel so as to lie over the lower edge of the
The metal strap or band is soldered at one edge throughout its length to
the cover and at the other edge to the body of the vessel. Prior to fixing the
metal strap or band in place, a wire is interposed between it and the vessel. The
wire, one end of which is preferably fixed to the vessel, extends around it and is
carried at the other end through the strap or band to the exterior thereof.
cover.
The strap or band serves to exclude air from the vessel, and when it is desired
to open the latter the free end of the wire is seized and the strap or band cut by
pulling the wire to the requisite degree and in the proper direction. The cover is
then free to be taken off.
Canisters and like vessels thus fitted are opened without injury to them or to the
covers thereof.
T: 04th day of Tonery 1893.
NICHOLAS WATTS,
Chartered Patent Agent.
COMPLETE SPECIFICATION.
An Improved Method of Hermetically Sealing Tin Canisters and
the like, and Means for Opening the same.
I, GEORGE WILLIAM DAVEY, of Bannerleigh, Leigh Woods, Bristol,
Gentleman, 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 :-
This invention relates to the hermetical sealing of tin canisters and the like.
According to this invention a strap or band of lead, tin foil or other suitably
soft metal is made to surround the vessel so as to lie over the lower edge of the
cover. The metal strap or band is soldered at one edge throughout its length to
the cover and at the other edge to the body of the vessel. Prior to fixing the
metal strap or band in place, a wire is interposed between it and the vessel. The
wire, one end of which is preferably fixed to the vessel, extends around it and is
carried at the other end through the strap or band to the exterior thereof.
The strap or band serves to exclude air from the vessel, and when it is desired to
open the latter the free end of the wire is seized and the strap or band cut by
pulling the wire to the requisite degree and in the proper direction. The cover is
then free to be taken off.
Referring to the accompanying sheet of drawings,
Fig. 1 represents an elevation of a canister sealed and provided with means for
opening in accordance with this invention.
Sealing is effected by means of the strip of lead a the upper edge of which
is soldered to the cover b of the canister, and the lower edge to the canister body c.
The lead strip a thus lies over the lower edge of the cover, making the canister

page_text: air-tight. Prior to soldering the lead strip a in place, a wire d is interposed
between it and the canister. One end of the wire d is fixed as at d¹, Fig. 2, which
represents a view of the canister with the lead strip partly peeled off. The other
end extends out beyond, the joint or overlapping place of the lead strip and
preferably terminates in a loop, head or button. When it is desired to open the
canister the free end of the wire d is seized and a pull is exerted in the direction
indicated by the arrow shown in the drawing. This action causes the lead strip a
to be cut by the wire d and when the strip has been thus severed throughout its
length the cover of the canister is free to be removed.
The canister and cover being uninjured are available for re-use.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. Hermetically sealing tin canisters and other vessels by a strip of lead, tin
foil, or other suitable metal secured at one edge to the cover of the vessel and at
the other to the body thereof, substantially as hereinbefore described.
2. In a hermetically sealed tin canister or other vessel sealed by means of a strip
of lead, tin foil or other suitable metal, as set forth in the preceding claim, the
provision of a wire interposed between the canister and the sealing strip and
having one end fixed or connected to the canister about which the wire is coiled
and the other end extending out through the sealing strip and terminating in a free
end, substantially as hereinbefore described and shown in the accompanying sheet
of illustrative drawings.
Dated this 16th day of June 1893.
NICHOLAS WATTS,
Chartered Patent Agent..