US3295485A - End closure - Google Patents

End closure Download PDF

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Publication number
US3295485A
US3295485A US334113A US33411363A US3295485A US 3295485 A US3295485 A US 3295485A US 334113 A US334113 A US 334113A US 33411363 A US33411363 A US 33411363A US 3295485 A US3295485 A US 3295485A
Authority
US
United States
Prior art keywords
end closure
flange
double
countersink wall
seam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US334113A
Other languages
English (en)
Inventor
Gedde Erik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primerica Inc
Original Assignee
American Can Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Can Co filed Critical American Can Co
Priority to US334113A priority Critical patent/US3295485A/en
Priority to IL21847A priority patent/IL21847A/xx
Priority to CH1146064A priority patent/CH448781A/de
Application granted granted Critical
Publication of US3295485A publication Critical patent/US3295485A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/30—Folding the circumferential seam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/30—Folding the circumferential seam
    • B21D51/32—Folding the circumferential seam by rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing

Definitions

  • Thepresent invention relates generally to a metal end closure for a can body and more particularly to a reinforced metal end closure for a can body having one or more relatively long, substantially straight sides.
  • This elongation of the countersink wall is caused by a flowing or displacement of metal from the outwardly extending flange of the end closure into the countersink wall along the relatively long sides of the end closure, and results in a decrease in the length of the end closure double seam hook along these relatively long sides, with a consequent partially unhooked end scam in these areas which is more susceptible to leakage than a fully hooked end seam.
  • the present invention solves this problem by preventing the elongation of the countersink wall and the consequent reduction in the length of the double seam hook of the end closure during the double seaming operation.
  • This is accomplished by providing a reinforcing bead on the inner portion of the outwardly extending flange adjacent the upper portion of the countersink wall of the end closure.
  • This reinforcing bead provides a barrier to the flow of metal from the outwardly extending flange into the countersink wall during the double seaming operation, and thus results in a countersink wall of uniform depth throughout the double seam and prevents the reduction in length of the end closure double seam hook to insure a uniform, fully hooked end seam.
  • the provision of the reinforcing bead constitutes a preforming of this portion of'the end closure into the shape which it should assume in the finished double scam, the bead being joined to the outwardly extending flange along a sharp radius of curvature which is spaced below the top edge of the end closure and provides a line of bend for the flange to thereby prevent substantial reshaping of the bead during the double seaming operation.
  • An object of the present invention is the provision of a metal end closure for can bodies having one or more relatively long, substantially straight sides which is so constructed as to be uniformly double seamed to the can body.
  • Another object is the provision of such a metal end closure having an outwardly extending flange and a countersink wall depending therefrom which is so constructed as to prevent irregular elongation of the countersink wall during the double seaming of the end closure to the can body.
  • a further object of the present invention is to provide such a metal end closure wherein the outwardly extending flange thereof is reinforced adjacent the countersink wall thereof to prevent the flowing of metal from the flange into the countersink wall along the relatively long sides of the end closure during the double seaming thereof to the can body.
  • Still another object is the provision of a method of double seaming an end closure to a can body having one or more relatively long,-substantially straight sides which meets the other objectives of the invention.
  • FIGURE 1 is a perspective view of a sealed metal container embodying the end closure of the instant invention
  • FIGURE 2 is an enlarged sectional view taken substantially along line 22 in FIG. 1;
  • FIGURE 3 is an elevational view in section of a portion of a conventional end closure prior to the double seaming thereof to a can body;
  • FIGURE 4 is a view similar to FIG. 2 showing a completed double seam along one of the relatively long sides of a container when the conventional end closure of FIG. 3 is utilized;
  • FIGURE 5 is an elevational view in section of an improved end closure embodying the principles of the instant invention and shown prior to the double seaming thereof to a can body;
  • FIGURE 6 is an elevational view in section, with parts broken away, showing the improved end closure of FIG. 5 in position on a can body just prior to the double seaming operation;
  • FIGURE 7 is an elevational view in section, with parts broken away, showing the relationship of the improved end closure of FIG. 5 and the can body after the first step in the double seaming operation is completed.
  • FIGURES 1 and 2 illustrate a sealed metal can or container 10 of generally rectangular shape comprising a can body 12 having long sides 14- and short sides 16 and being provided with a conventional side seam 18 disposed in one of the short sides 16.
  • the can body 12 is provided with an easy opening feature in the form of a pair of score lines 20, 22 which preferably extend completely around the periphery of the can body 12.
  • a tearing tongue 24 is formed integral with the removable area defined by the score lines 20, 22 to facilitate the tearing of the removable area from the can body 12 and to provide for easy opening of the can 10.
  • End closures 26 constructed according to the principles of the instant invention and having a shape substantially the same as that of the can body 12 are secured to the upper and lower ends thereof in conventional double seams 28.
  • Each of the seamed end closures 26 is identical in construction and comprises a depressed central panel 30 which merges with an upwardly extending countersink wall 32 that in turn merges at a curved upper portion 34 with a hook portion 36 (see FIG. 2).
  • the can body 12 is provided with a hook portion 38 which interlocks with the end closure hook portion 36 in the conventional double seam 28.
  • a conventional sealing compound 40 is provided in the double seam 28 between the end closure 26 and the can body 12 to provide a hermetically sealed double seam 28.
  • FIGURE 3 there is shown a conventional end closure 26a in its form prior to being double seamed to a can body.
  • the end closure 26a comprises a recessed central panel 30a which merges at its outer end portion with a substantially vertical countersink wall 32a which in turn merges at its upper portion with an outwardly extending flange 42a.
  • the outer portion of the flange 42a is provided with a hook portion 36a which forms a part of the double seam when the end closure 26a is seamed to a can body, and the undersurface of the flange 42a is coated with a conventional sealing compound 40a.
  • the countersink wall 32a of the end closure 26a is elongated throughout the portions thereof adjacent the relatively long, substantially straight sides 14a of the can body 12a. It has been discovered that this elongation of the countersink wall 32a results from a flowing or backing-up of metal from the outwardly extending flange 42a into the countersink wall 32a during the conventional double seaming operation under the influence of the inward pressure applied by the seaming rollers. This resultant elongation of the countersink wall 32a results in a reduced or shortened end closure hook 36a (see FIG.
  • the improved end closure 26 of the instant-invention is constructed to prevent the flowing of metal into the countersink wall 32 thereof during the double seaming operation and thus is seamed to the container body 12 in a uniform, fully hooked double seam 28, as shown in FIG. 2.
  • the outwardly extending flange 42 of the end closure 26 is provided with a continuous, raised or upwardly extending reinforcing bead or rib 44 on the inner portion thereof adjacent the countersink wall 32.
  • the reinforcing bead 44 provides a barrier to the flow of metal from the outwardly extending flange 42 into the countersink wall 32 adjacent the relatively long sides 14 of the can body 12 when the flange 42 is forced downwardly and inwardly during the double seaming operation.
  • the reinforcing head 44 therefore, prevents the elongation of the countersink wall 32 during the double seaming operation and thus prevents reduction in the length of the hook portion 36 of the end closure 26 to insure a fully hooked and uniform double seam 28.
  • the end closure 26 is first positioned on the can body 12 in the manner shown in FIG. 6, wherein the countersink wall 32 and the central panel 30 are disposed within the can body 12 and the outwardly extending flange 42 is supported by an outwardly flared portion or flange 46 on the upper portion of the can body 12.
  • the end closure flange 42 and the can body flange 46 are then interlocking forced downwardly and inwardly in a conventional two-step double seaming operation (not shown).
  • FIG. 7 The relationship of the improved end closure 26 and the can body 12 after the first step of the double seaming operation is completed is shown in FIG. 7 wherein the end closure and can body are interlocked in a loose preliminary double seam.
  • the first step of the double seaming operation there is substantially no elongation of the countersink wall 32 of the improved end closure 26, since metal is prevented from flowing from the flange 42 into the countersink wall 32 by the reinforcing head 44.
  • the head 44 remains substantially intact to comprise the upper part of the double seam and the flange 42 is bent downwardly and inwardly along a substantially horizontal hinge line 48 which is disposed at the junction of the bead 44 and the flange 42. Since there is no flowing of metal from the end flange 42 into the countersink wall 32 during the double seaming operation, there is no decrease in the length of the hook portion 36 on the improved end closure 26 as clearly seen in FIG. 7.
  • closure 26 may be used with a can body of any shape which comprises one or more sides of a length sufiicient to result in a flowing of metal from the end closure flange into the countersink -wall during a double seaming operation. Also, it is within the scope of the instant invention to provide a reinforcing bead in the end closure flange only in the portions thereof which are adjacent relatively long sides of the can body instead of utilizing the continuous head 44 disclosed herein.
  • a method of securing a metal end closure to a rectangular can body having a laterally outwardly extending flange at one end thereof, the end closure comprising a countersink wall and a flange extending generally lateral: ly outwardly therefrom comprising the steps of:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Closures For Containers (AREA)
US334113A 1963-12-30 1963-12-30 End closure Expired - Lifetime US3295485A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US334113A US3295485A (en) 1963-12-30 1963-12-30 End closure
IL21847A IL21847A (en) 1963-12-30 1964-08-04 End closure for cans
CH1146064A CH448781A (de) 1963-12-30 1964-09-02 Mittels Doppelfalzung auf einen Büchsenkörper aufzubördelnder Metallverschlussdeckel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US334113A US3295485A (en) 1963-12-30 1963-12-30 End closure

Publications (1)

Publication Number Publication Date
US3295485A true US3295485A (en) 1967-01-03

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ID=23305630

Family Applications (1)

Application Number Title Priority Date Filing Date
US334113A Expired - Lifetime US3295485A (en) 1963-12-30 1963-12-30 End closure

Country Status (3)

Country Link
US (1) US3295485A (de)
CH (1) CH448781A (de)
IL (1) IL21847A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4556354A (en) * 1983-04-09 1985-12-03 Toyo Seikan Kaisha, Ltd. Process for production of bonded can of key-opening type
US4626157A (en) * 1979-12-08 1986-12-02 Metal Box Public Limited Company Methods of making containers
US4821911A (en) * 1986-09-02 1989-04-18 Manufacture De Bidons Et Boites Metalliques M. Kouperman S.A. Closing cover for a metal container
US4854467A (en) * 1987-03-04 1989-08-08 Buedenbender Bernd Container of sheet metal
EP0411758A1 (de) * 1989-06-30 1991-02-06 CarnaudMetalbox plc Behälter und Verfahren und Vorrichtung zu deren Herstellung
US5242254A (en) * 1989-06-30 1993-09-07 Carnaudmetalbox Plc Containers
FR2716393A1 (fr) * 1994-02-24 1995-08-25 Lorraine Laminage Boite métallique pour contenu démoulable constituée d'un corps et d'un couvercle métallique refermable après ouverture et procédé de fabrication d'une telle boîte.
US20090200321A1 (en) * 2005-05-17 2009-08-13 Toyo Seikan Kaisha, Ltd. Square can and method and apparatus for double seaming the same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1412175A (en) * 1918-12-21 1922-04-11 Gasset Eduardo Opening device for tins used for preserving food
US1689641A (en) * 1923-10-08 1928-10-30 American Can Co Method and means of vacuumizing and double seaming
US2250002A (en) * 1937-11-09 1941-07-22 Saml Hanson & Son Ltd Seaming apparatus
US2277066A (en) * 1937-07-01 1942-03-24 Saml Hanson & Son Ltd Tin or sheet metal container
US2455737A (en) * 1944-07-29 1948-12-07 Continentai Can Company Inc Method of attaching metal closures to containers
US2460296A (en) * 1946-06-27 1949-02-01 American Can Co Mechanism for forming vented can end seams
US2558723A (en) * 1946-07-08 1951-07-03 American Can Co Container
US2739732A (en) * 1950-10-30 1956-03-27 Bogner Peter Rip-wire can closures
US3139211A (en) * 1960-03-09 1964-06-30 Jr Edward S Foltz Containers and openers therefor

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1412175A (en) * 1918-12-21 1922-04-11 Gasset Eduardo Opening device for tins used for preserving food
US1689641A (en) * 1923-10-08 1928-10-30 American Can Co Method and means of vacuumizing and double seaming
US2277066A (en) * 1937-07-01 1942-03-24 Saml Hanson & Son Ltd Tin or sheet metal container
US2250002A (en) * 1937-11-09 1941-07-22 Saml Hanson & Son Ltd Seaming apparatus
US2455737A (en) * 1944-07-29 1948-12-07 Continentai Can Company Inc Method of attaching metal closures to containers
US2460296A (en) * 1946-06-27 1949-02-01 American Can Co Mechanism for forming vented can end seams
US2558723A (en) * 1946-07-08 1951-07-03 American Can Co Container
US2739732A (en) * 1950-10-30 1956-03-27 Bogner Peter Rip-wire can closures
US3139211A (en) * 1960-03-09 1964-06-30 Jr Edward S Foltz Containers and openers therefor

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4626157A (en) * 1979-12-08 1986-12-02 Metal Box Public Limited Company Methods of making containers
US5049019A (en) * 1979-12-08 1991-09-17 Cmb Foodcan Plc Methods of making containers
US4556354A (en) * 1983-04-09 1985-12-03 Toyo Seikan Kaisha, Ltd. Process for production of bonded can of key-opening type
US4821911A (en) * 1986-09-02 1989-04-18 Manufacture De Bidons Et Boites Metalliques M. Kouperman S.A. Closing cover for a metal container
US4854467A (en) * 1987-03-04 1989-08-08 Buedenbender Bernd Container of sheet metal
EP0411758A1 (de) * 1989-06-30 1991-02-06 CarnaudMetalbox plc Behälter und Verfahren und Vorrichtung zu deren Herstellung
US5178297A (en) * 1989-06-30 1993-01-12 Cmb Foodcan Plc Containers
US5242254A (en) * 1989-06-30 1993-09-07 Carnaudmetalbox Plc Containers
FR2716393A1 (fr) * 1994-02-24 1995-08-25 Lorraine Laminage Boite métallique pour contenu démoulable constituée d'un corps et d'un couvercle métallique refermable après ouverture et procédé de fabrication d'une telle boîte.
EP0669177A1 (de) * 1994-02-24 1995-08-30 Sollac S.A. Metalldose für stürzbaren Inhalt bestehend aus einer Zarge und einem nach Öffnung wiederverschliessbaren Deckel, und Herstellungsverfahren einer solchen Dose
US20090200321A1 (en) * 2005-05-17 2009-08-13 Toyo Seikan Kaisha, Ltd. Square can and method and apparatus for double seaming the same
US8789721B2 (en) * 2005-05-17 2014-07-29 Toyo Seikan Kaisha, Ltd. Square can and method and apparatus for double seaming the same

Also Published As

Publication number Publication date
IL21847A (en) 1968-03-28
CH448781A (de) 1967-12-15

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