US1370802A - Can-end seal - Google Patents

Description

3, ISJH.

Patented Mar 8, 1921.

ATTORNEY.

UNITED STATES PATENT OFFICE AXEL A. ENGLUND, OF OAKLAND, CALIFORNIA, ASSIGNOB TO AMERICAS CAN COM- rm, 01 SAN FRANCISCO, CALIFORNIA, A CORPORATION 01 NEW JERSEY.

CAN-END SEAL.

Specification of Letters Patent.

Patented Mar. 8, 1921.

To all whom it may concern:

Be it known that I, Axnn A. ENGLUND, citizen of Finland, residing at Oakland, in the county of Alameda and State of California, have invented certain new and use ful Improvements in Can-End Seals, of which the following is a specification.

The present invention relates to a-seal for cans or other similar containers of the solderless type, and more particularly to a seal having means for the ready removal thereof to permit the container to be opened without the use of a can opener or other special tool.

The object of the invention is to provide a seal of the described type which may be easily and speedily made by machines now used in the art, and which will prove permanent for the exclusion of air from the container, and finally, which may be easily broken, to open the container, without the use of a can opener or other special tool.

In order to comprehend the invention, reference should be had to the accompanying drawings, wherein- Figure 1 is a perspective view of a can having one end secured thereto by means of my improved seal, the seal belng partly opened.

Fig. 2 is a sectional detail of my seal taken in the direction of the arrows on a plane represented by the line 2-2 of Fig. 1, showing the completed seal.

Fig. 3 is a similar view showing the seal partly broken.

Fig. 4 is a similar view of a modified form of my seal.

Fig. 5 is a similar view of a second modified form of my seal.

In the drawings, the reference numeral 1 represents the body of a can or container having ends 2 and 2. The end 2' is secured to the can body in any suitable manner, and the end 2 is illustrated as secured to said body by means of my improved seal.

The can body 1 is formed with an outwardly turned annular flange 3 at its end, and the can end 2 is formed with an annular shoulder 4 adapted to fit closely within the end of the can body 1, and beyond said shoulder 4: with an outwardly projecting flange 5 adapted to lie in parallel relation to the flange 3 of the can body.

Suitable packing material 6 is preferably interposed etween said flanges 3 and 5 of the can body and can end respectively for the purpose of insuring a tight seal, said packing material in the present case con:- prislng a gasket ring liner.

The flange 5 of the can end is wider than the flange 3 of the body and is adapted to be curled over said flange 3, as at 7, to secure the can end thereto. Before said flange 5 1s curled over, an opening strip 8 is interposed between the curled portion 7 of said flange and the flange 3 of the can body 1. Sa1d opening strip 8 is of a length greater than the circumference of the seaming flange and which flange is formed with a notched section 9, through which the projecting end of the opening strip projects or extends when the flange is seamed down for sealing of the can end to the can body. The said projecting end of the opening strip is formed into a suitable ring or hand piece 10, and by means of said ring or hand piece 10, the strip 8 may be easily withdrawn, and by so doing, said strip opens the seal by uncurling the outer edge portion 7 of the seamed end flange 5, as shown in Figs. 1 and 3. After the removal of said strip 8 the end 2 can be readily removel from the flange 3 of the can body.

The opening strip 8 may be either in the form of a flat strip of metal or other suitable material, as shown in Figs. 1, 2 and 3,

or it may be a round wire, as shown in Fig. 4. The seal may be further modified, moreover, by extending the body flange 3 and crimping the same over the end flange 5, as

shown at 7 in Fig. 5. In this case the opening strip 8 is placed between the curled edge 7' of the body flange 3 and the outer surface of the flat end flange 5, and the end thereof extended through a notch formed in the curled edge 7 The action of said opening strip 8 is the same in either case, the strain exerted thereon serving to uncurl the seamed or crimped sealing flange to release the can end held thereby to the can body.

It is to be noted that in all the forms of my invention the can bodyand the can end form a metal-to -metal seal at the point 11 where the shoulder 4 of said end lies within the can body. Said metal-tometal seal protects the packing material 6 from the action of any liquid which may be contained within the can, and thereby prevents the deterioration thereof.

It is obvious that the invention may be applied -to other styles and forms of cans than that illustrated herewith, and that minor changes may be made in the form and construction of the seal without departing from the spirit of the invention. therefore wish to be understood as claiming the invention as broadly as the state of the art will permit.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is 2-- 1. The combination of a can body and cover therefor, said body and cover having flanges which are outstanding from the body of the can, means for securing said flanges together consisting of'the outer portion of one of said flanges which is bent around so asto inclose the other of said flanges, and an opening strip arranged under and engaging the extreme lip of said bent over securing flange, so that the pulling 0f the strip will bend the securing'flange into a position at substantially right angles to the plane of said outstanding flanges, the oute 2. The combination of a can body and n I cover therefor, said body and cover having flanges which are outstanding from the-body of the can, means for securlng said flanges together consisting of the outer portion of one of said flanges which is bent around so as to inclose the other of said flanges, and an opening strip arranged under and engaging the extreme lip of said bent over securing flange, so that the pulling of the strip will bend the securing flange into a position at substantially right angles to the plane of said outstanding flanges, the outer edge of the pulling strip being arranged substantially in line with the outer edge of the inclosed flange, the pulling strip being of a width substantially equal to the length of the inclosed flange.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AXEL'A. ENGLUND. Witnesses:

' HARRY A. POTTER,

D. B. RICHARDS.

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