US2052629A - Metal container - Google Patents

Description

Sept, 1, 1936. w. w. HODGSON METAL CONTAINER Filed Feb. 20, 1955 MLUIJM Pub 0065c Patented Sept. 1, 1936 r v UNITED STATES PATENT OFFICE Y i I 2,052,629 7 METAL CONTAINER J William W. Hodgson, Chicago, Ill., assignor to Continental Can Company, Inc., New York,

. .N. Y., a corporation of New York Application February 20, 1935, Serial No. 7,437

2 Claims. (01. 220-27) v. The invention relates to new and useful improvements in a metal container ofthe friction closure-type andmore in particular to a contain'r wherein a 'frang'ible sealing member is used in conjunction with the friction closure.

An object of the invention is to provide a container of the above type wherein an inner frangible metal closure is frictionally secured to the can top so that in case of rupturing the same during the manufacture of the can it may be pryed out and another substituted therefor.

A further object of the invention is to provide a metal container of the above type wherein said inner frangible metal closure is held in contact with a sealing material by the friction securing means so as to provide a hermetic seal therefor.

Referring to the drawing:

Fig. l is a view partially in side elevation and partially in vertical section of the container embodying the improvements.

Fig. 2 is an enlarged partial vertical section through the upper end of the container.

The invention relates particularly to a metal container of the friction closure type wherein a frangible sealing member is used in conjunction with the friction closure. The container comprises a body portion preferably of metal having ends double seamed thereto, one of said ends being in the form of a can top having a central opening therethrough. The can top has lower and upper parallel vertical friction walls, the upper wall being of greater diameter than the lower wall, said lower wall surrounding the central opening in the can top. The portion of the metal of the can top between the lower and upper friction walls forms a ledge having a pocket depressed therein which is adapted to receive a sealing material. A frangible metal sealing member is provided having a portion adapted to frictionally engage the lower friction wall and a peripheral portion adapted to overlie said ledge, the outer edge of said frangible sealing disc Referring more in detail to the drawing, a'

container embodying improvements forming the invention is indicated at 3. The container comprises a body portion 4 preferably of metal having the bottom end 5 joined thereto by the conventional double seam 6. A top end or can top 1 is joined to the other end of the container by the double seam 8. The can top I is provided with a central opening which is surrounded by .a lower 'verticalfriction wall 9 and has the lower edge portion thereof rolled outwardly into a strengthening bead l0 which gives rigidity to the lower friction wall. An upper friction wall l2 of a greater diameter than the inner friction wall 9 is formed in the can top and is adapted to lie parallel to the lower friction wall 9. The Walls 9 and I2 are integrally formed in the can top and the portion of the metal lying therebetween forms a ledge I3 which is provided with a recess or depressed pocket l4 adapted to receive a sealing material I5.

.A frangible metal sealing member I6 is provided to close the opening in the container surrounded by the lower vertical friction wall. This frangible sealing member is preferably of aluminum but could easily be made of taggers tin or any other thin frangible metal. The sealing member I6 is provided with a depending friction wall I! which is adapted to frictionally engage the lower friction wall 9 of the can top and has a peripheral portion [8 overlying the ledge I3, the outer edge of said sealing member being rolled to form a bead l9 which is adapted to become imbedded in the sealing material l5 for hermetically closing the container.

An independent metal closure provided with a depending friction wall 2| is adapted to frictionally engage the outer parallel vertical friction wall l2. The friction closure 20 is provided at its upper end with a laterally extending bead 22 which is adapted to overlie and contact with the upper face of the can top. This upper friction closure 20 forms a protection for the inner frangible closing member I6 and prevents accidental rupturing of the-same.

From the above it will be apparent that a container has been devised wherein two closures of the friction closure type have been provided, one of said closures being of frangible metal and having a portion thereof imbedded in a sealing material for establishing a hermetic seal for the container. The other of said closures is of standard metal and adapted to overlie the inner frangible closure and protect the same against accidental rupture. The particular advantage of the type of inner frangible closure set forth in this invention is that should said frangible closure become ruptured or mutilated during the manufacture of the container, a new one could be easily substituted therefor without destroying the rest of the container. While it is understood that these frangible closures may be replaceable in manufacture, it may be readily seen that after the container is filled and closed through its opposite end which is the usual procedure with containers of this type, the inner closure could not be removed without mutilating its appearance which would indicate tampering with the contents of the container.

It is obvious that minor changes in the details of construction and arrangement of parts may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:-- e r 1. A metal container comprising tion, a can top seamed thereto and having upper and lower parallel. vertical friction walls; the upper wall being of larger diameter than" the lower Wall and forming therebetween a ledge, an integral frangible metal sealing member closing the opening surrounded by said lower vertical "'friction walLand having a pgrtiog thereof fric a body portionally engaging said lower friction wall and a peripheral portion overlying said ledge, and an independent metal closure adapted to frictionally engage the upper friction wall above said sealing member for closing the container and'eprotecting the said frangible sealing member.

2. A metal container comprising a body portion, a can top seamed thereto, said can top having upperand lower parallel vertical friction walls, the upper wall being of larger diameter" than the lower wall and forming therebetween a e WILLIAM w. HQDGSON.

' gage the upper friction wall for closing the con- 20 tainer' and protecting the inner frangible closure,

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