Claims
- 1. Apparatus for securing a tamper evident lid to a container wherein the lid includes a depending skin portion and the container includes a rim at an upper open end thereof, the apparatus comprising:
- a) first means for pressing a lower portion of the depending skin portion of the lid under and into engagement with the rim of the container to form a curl about a major peripheral portion of the lid while leaving a minor peripheral portion uncurled; and
- b) second means cooperating with said first means for simultaneously forming a vertical slit in said lower portion of said depending skin portion at an interface between the curled and uncurled portions to thereby simultaneously form a grip tab therein.
- 2. Apparatus of claim 1 wherein said first means includes an annular die formed as a plurality of die segments, said segments when in a closed position having a substantially continuous upwardly facing curling surface formed therein, said curling surface interrupted over a minor circumferential portion corresponding to the uncurled portion of the skirt.
- 3. Apparatus of claim 1 wherein said first means comprises a plurality of die segments radially movable between open and closed positions, said die segments forming a closed annulus in the closed position; each of said die segments including a curling surface and one of said segments also including an interrupted area where said curling surface is omitted; and wherein means are provided for locating said curling surfaces below said depending skirt and for moving said die segments upwardly in said closed position to curl said depending skirt under said rim except that said depending skirt portion remains uncurled in said interrupted area.
- 4. Apparatus of claim 3 wherein said second means includes a knife edge fixed to said one of said die segments at an interface between said curling surface and said interrupted area.
- 5. Apparatus of claim 1 wherein third means are provided for orienting the container to a predetermined rotational position relative to said first means before said first means engages the container lid.
- 6. Apparatus of claim 1 wherein said first means includes a single die press at a station fixed relative to a rotatable turntable which indexes containers and lids to said single die press.
- 7. Apparatus of claim 6 wherein third means are provided for orienting the container to a predetermined rotational position relative to said first means before said first means engages file container lid.
- 8. Apparatus of claim 7 wherein said third means comprises an alignment mechanism including an arm which locates a longitudinal seam in a side wall of the container and rotates the seam to the predetermined rotational position.
- 9. Apparatus of claim 1 wherein said first means includes a rotatable table having a plurality of die press heads thereon.
- 10. Apparatus of claim 9 wherein third means are provided for orienting the container to a predetermined rotational position relative to said first means before said first means engages the container lid.
- 11. Apparatus of claim 10 wherein said third means comprises an alignment mechanism including an arm which locates a longitudinal seam in a side wall of the container and rotates the seam to the predetermined rotational position.
- 12. Apparatus for securing a tamper evident lid to a container wherein the lid includes a depending skirt portion and the container includes a rim at an upper open end thereof, the apparatus comprising:
- a) first means for pressing a lower portion of the depending skirt portion of the lid under and into engagement with the rim of the container to form a curl about a major peripheral portion of the lid while leaving a minor peripheral portion uncurled; and
- b) second means cooperating with said first means for simultaneously forming a vertical slit in said lower portion of said depending skirt portion at an interface between the curled and uncurled portions to thereby simultaneously form a grip tab therein;
- wherein third means are provided for orienting the container to a predetermined rotational position relative to said first means before said first means engages the container lid; and
- wherein said third means comprises an alignment mechanism including an arm which locates a longitudinal seam in a side wall of the container and rotates the seam to the predetermined rotational position.
Parent Case Info
This application is a continuation-in-part of application Ser. No. 08/026,202 filed Feb. 26, 1993, now U.S. Pat. No. 5,253,772, which is a continuation of Ser. No. 07/876,907 filed Apr. 30, 1992, now abandoned, which in turn is a continuation of Ser. No. 07/703,858 filed May 21, 1991, now abandoned.
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Continuations (2)
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Number |
Date |
Country |
Parent |
876907 |
Apr 1992 |
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Parent |
703858 |
May 1991 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
26202 |
Feb 1993 |
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