US3322295A - Sheet metal joint and pull tab connection - Google Patents

Sheet metal joint and pull tab connection Download PDF

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Publication number
US3322295A
US3322295A US419300A US41930064A US3322295A US 3322295 A US3322295 A US 3322295A US 419300 A US419300 A US 419300A US 41930064 A US41930064 A US 41930064A US 3322295 A US3322295 A US 3322295A
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United States
Prior art keywords
end wall
boss
hollow
tab
sheet metal
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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
US419300A
Inventor
Jones Derek Walter
Miles Frederick David
Payne Orlebar Malcolm Bruce
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.)
British Aluminum Co Ltd
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British Aluminum Co Ltd
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Publication date
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    • 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
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/32—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness having non-detachable members or portions
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab

Definitions

  • FIG.2 SHEET METAL JOINT AND FULL TAB CONNECTION May 30, 1967 Filed Dec. 18, 1964 FIG] FIG.2
  • a member in some applications, it is highly desirable to attach a member to a metal sheet of deformable material without interrupting the continuity of the metal sheet.
  • One such application with which the present invention is particularly, but not exclusively, concerned is the attachment of a tab to a weakened portion or tear strip of a thin-walled metal sheet intended to form part of an airtight container such as, for example, containers for foodstuffs or beverages.
  • a method of joining a member to a metal sheet of deformable material which comprises the steps of deforming the metal sheet to form a first hollow boss Without interrupting the continuity of the sheet, forming the member with a formation substantially complementary to the boss and dimensioned to extend into or around the boss, disposing one of the formation and the boss inside the other and adhesively uniting the boss and the formation.
  • the end of the further boss may, however, be open or apertured and, in some cases, the wall of the further boss may be serrated.
  • the member sheet the formation being deformed out of the general plane thereof by a pressing or stamping operation.
  • FIG. 1 is a plan view of the top for the container showing the tear strip
  • FIG. 2 is a view similar to FIG. 1 showing the tab attached
  • FIG. 3 is an enlarged section taken on the line IIIIII of FIG. 2, and
  • FIG. 4 is a view similar to FIG. 2 of a modification.
  • the container end or lid 1 is formed from deformable sheet metal which may, for example, be
  • a metal container having an end wall with a first hollow boss deformed out of the general plane of said end wall without interrupting the continuity of said end wall, a pair of spaced weakened line portions formed in said end wall to embrace said first hollow boss and define a tear strip, a tab overlying said end wall and carrying a second hollow boss, one of said first and second hollow bosses extending as a relatively close fit into the other of said first and second bosses and said bosses being relatively dimensioned such that displacement of said tab about an axis parallel to the general plane of said end wall and subto the direction of said tear strip produces mechanical engagement of said first and second bosses tending to lift said first boss and tear said weakened line portions and an adhesive bond uniting said first and second hollow bosses.
  • a metal container having an end Wall with a first hollow boss deformed inwardly of said container out of the general plane of said end wall without interrupting the continuity of said end wall, a pair of spaced weakened line portions formed in said end wall to embrace said first hollow boss and define a tear strip, a tab overlying said end wall and carrying a second hollow boss extending as a relatively close fit into said first boss and dimensioned such that displacement of said tab about an axis parallel to the general plane of said end wall and substantially normal to the direction of said tear strip produces mechanical engagement of said first and second bosses tending to lift said first boss and tear said weakened line portions and an adhesive bond uniting said first and second hollow bosses.

Description

D. w. JONES ETAL 3,322,295
SHEET METAL JOINT AND FULL TAB CONNECTION May 30, 1967 Filed Dec. 18, 1964 FIG] FIG.2
* YQREEJI United States Patent Oil 3,322,295 SHEET METAL JOINT AND PULL TAB CONNECTION Derek Walter Jones, Blackwater, near Camberley, Frederick David Miles, Beaconsfield, and Orlebar Malcolm Bruce Payne, Radlett, England, assignors to The British Aluminium Company Limited, London, England, a British company Filed Dec. 18, 1964, Ser. No. 419,300 Claims priority, application Great Britain, Dec. 23, 1963, 50,667/ 63 4 Claims. (Cl. 220-54) This invention relates to improvements in sheet metal joints and methods of producing such joints.
In some applications, it is highly desirable to attach a member to a metal sheet of deformable material without interrupting the continuity of the metal sheet. One such application with which the present invention is particularly, but not exclusively, concerned is the attachment of a tab to a weakened portion or tear strip of a thin-walled metal sheet intended to form part of an airtight container such as, for example, containers for foodstuffs or beverages.
According to one aspect of the present invention, there is provided a method of joining a member to a metal sheet of deformable material which comprises the steps of deforming the metal sheet to form a first hollow boss Without interrupting the continuity of the sheet, forming the member with a formation substantially complementary to the boss and dimensioned to extend into or around the boss, disposing one of the formation and the boss inside the other and adhesively uniting the boss and the formation.
According to another there is provided a metal sheet of deformable material The end of the further boss may, however, be open or apertured and, in some cases, the wall of the further boss may be serrated.
It is preferred that the member sheet, the formation being deformed out of the general plane thereof by a pressing or stamping operation.
One embodiment of the invention will now be described by way of example as applied to a tab attached to a tear strip formed in the end of a thin-walled metal container, reference being made to the accompanying drawings in which:
FIG. 1 is a plan view of the top for the container showing the tear strip,
FIG. 2 is a view similar to FIG. 1 showing the tab attached,
FIG. 3 is an enlarged section taken on the line IIIIII of FIG. 2, and
FIG. 4 is a view similar to FIG. 2 of a modification.
In this example, the container end or lid 1 is formed from deformable sheet metal which may, for example, be
be of deformable metal 3,322,295 Patented May 30, 1967 ice tion with the corners radiused to avoid sharp bends in the material.
fit within the boss 2. A measured quantity of adhesive is introduced into the boss 2 and the boss 6 is then inserted and incorporates hardener polyamine.
It will be appreciated that when the boss in the boss 2 it is mechanically held against The above described arrangement is preferred, but it will be understood that the as a close fit within a corresponding formed boss on the tab 5. It will also be understood the end of the boss 6 may be left open.
We claim:
'stantially normal a an axis parallel to the general plane of the sheet and substantially normal to the direction of said tear strip at the location of said first boss produces mechanical engagement of said first and second bosses tending to lift said first boss and tear said weakened line portions and an adhesive bond uniting said first and second hollow bosses.
3. A metal container having an end wall with a first hollow boss deformed out of the general plane of said end wall without interrupting the continuity of said end wall, a pair of spaced weakened line portions formed in said end wall to embrace said first hollow boss and define a tear strip, a tab overlying said end wall and carrying a second hollow boss, one of said first and second hollow bosses extending as a relatively close fit into the other of said first and second bosses and said bosses being relatively dimensioned such that displacement of said tab about an axis parallel to the general plane of said end wall and subto the direction of said tear strip produces mechanical engagement of said first and second bosses tending to lift said first boss and tear said weakened line portions and an adhesive bond uniting said first and second hollow bosses.
4. A metal container having an end Wall with a first hollow boss deformed inwardly of said container out of the general plane of said end wall without interrupting the continuity of said end wall, a pair of spaced weakened line portions formed in said end wall to embrace said first hollow boss and define a tear strip, a tab overlying said end wall and carrying a second hollow boss extending as a relatively close fit into said first boss and dimensioned such that displacement of said tab about an axis parallel to the general plane of said end wall and substantially normal to the direction of said tear strip produces mechanical engagement of said first and second bosses tending to lift said first boss and tear said weakened line portions and an adhesive bond uniting said first and second hollow bosses.
References Cited UNITED STATES PATENTS 3,068,563 12/1962 Reverman 29-458 3,187,928 6/1965 Bozek 220-54 3,198,155 8/1965 Fraze 220-54 THERON E. CONDON, Primary Examiner. G. T. HALL, Assistant Examiner.

Claims (1)

  1. 3. A METAL CONTAINER HAVING AN END WALL WITH A FIRST HOLLOW BOSS DEFORMED OUT OF THE GENERAL PLANE OF SAID END WALL WITHOUT INTERRUPTING THE CONTINUITY OF SAID END WALL, A PAIR OF SPACED WEAKENED LINE PORTIONS FORMED IN SAID END WALL TO EMBRACE SAID FIRST HOLLOW BOSS AND DEFINE A TEAR STRIP, A TAB OVERLYING SAID END WALL AND CARRYING A SECOND HOLLOW BOSS, ONE OF SAID FIRST AND SECOND HOLLOW BOSSES EXTENDING AS A RELATIVELY CLOSE FIT INTO THE OTHER OF SAID FIRST AND SECOND BOSSES AND SAID BOSSESS BEING RELATIVELY DIMENSIONED SUCH THAT DISPLACEMENT OF SAID TAB ABOUT AN
US419300A 1963-12-23 1964-12-18 Sheet metal joint and pull tab connection Expired - Lifetime US3322295A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB50667/63A GB1034860A (en) 1963-12-23 1963-12-23 Improvements in or relating to sheet metal joints, and methods of producing same

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US3322295A true US3322295A (en) 1967-05-30

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GB (1) GB1034860A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140008365A1 (en) * 2012-07-09 2014-01-09 Silgan Containers Llc Can end and related method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1009482Y (en) * 1989-01-25 1990-02-16 Sanz Salvador Fernando OPENING DEVICE FOR CANNED CANS.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068563A (en) * 1958-11-05 1962-12-18 Westinghouse Electric Corp Metal joining method
US3187928A (en) * 1962-10-08 1965-06-08 Continental Can Co Plastic pull handle pivotally secured to scored metal can end
US3198155A (en) * 1964-03-02 1965-08-03 Ermal C Fraze Method of interconnecting two sheets of deformable material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068563A (en) * 1958-11-05 1962-12-18 Westinghouse Electric Corp Metal joining method
US3187928A (en) * 1962-10-08 1965-06-08 Continental Can Co Plastic pull handle pivotally secured to scored metal can end
US3198155A (en) * 1964-03-02 1965-08-03 Ermal C Fraze Method of interconnecting two sheets of deformable material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140008365A1 (en) * 2012-07-09 2014-01-09 Silgan Containers Llc Can end and related method
US8966865B2 (en) * 2012-07-09 2015-03-03 Silgan Containers Llc Can end and related method
US9950831B2 (en) 2012-07-09 2018-04-24 Silgan Containers Llc Can end and related method

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GB1034860A (en) 1966-07-06

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