Title: Method and apparatus for forming multiple thickness bead

Abstract: A method and apparatus for forming a double-thickness bead in a flexible sheet stock article, such as a container or lid constructed from paper stock. The method includes holding a central region of the paper stock blank near its perimetral edge between cooperating dies, forming an axially extending flange in the blank between the held region and the edge, capturing the edge against radial movement in a groove provided in a ring movable relative to the dies, and moving the ring relative to the dies to form the double-thickness region in the blank between the held portion and edge. The apparatus includes the cooperating relatively movable dies, the movable ring and cooperating draw pads adjacent the ring. The draw pads are movable relative to the dies and ring and cooperate with the dies and ring to form a void into which the double-thickness region is formed. The configuration of the void controls the formation and configuration of the bead.

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Inventors: Meadors, William R. (Long Grove, IL, US)

Application Number: 957693
Filing Date: 1978-11-06
Publication_date: 1980-10-14
Assignee: Peerless Machine & Tool Corporation (Marion, IN)
Primary Class(es): 264/291 53/561, 264/296, 264/320, 425/383, 425/389, 425/398
Other Classes:
US Patent Ref:

2492886	Dec, 1949	Punte	113/121.
2854694	Oct, 1958	Mumford	264/550.
2962757	Dec, 1960	Slemmons et al.	425/388.
3011212	Dec, 1961	Marshall et al.	264/544.
3041669	Jul, 1962	Marshall et al.	425/292.
3173174	Mar, 1965	Edwards	425/292.
3218379	Nov, 1965	Edwards	264/322.
3284553	Nov, 1966	Edwards	264/296.
3337664	Aug, 1967	Lyon	264/550.
3338997	Aug, 1967	Tigner	264/296.
3357053	Dec, 1967	Lyon et al.	425/292.
3375551	Apr, 1968	Sherlock	264/550.
3414941	Dec, 1968	Ignell	425/398.
3452396	Jul, 1969	Garver et al.	425/398.
3484518	Dec, 1969	Ignell	264/322.
3551954	Jan, 1971	Knowles	425/398.
3580041	May, 1971	Tilly	425/398.
3584109	Jun, 1971	Meadors et al.	264/292.
3695806	Oct, 1972	Arfert	425/398.
3751552	Aug, 1973	Meadors	264/320.
3784342	Jan, 1974	Merklinghaus	425/392.
3816585	Jun, 1974	Edwards	264/322.
3824941	Jul, 1974	Hannon	113/1.
3868919	Mar, 1975	Schrecker et al.	113/15.
3912438	Oct, 1975	Padovani	425/292.
3917788	Nov, 1975	Padovani	425/292.
3947205	Mar, 1976	Edwards	264/550.
3983827	Oct, 1976	Meadors	113/121.
4071598	Jan, 1978	Meadors	264/292.
4117062	Sep, 1978	Uhlig	264/296.

Other Refs:
Primary Examiner: Hoag, W. E.
Assistant Examiner:
Attorney: Jenkins, Coffey, Hyland, Badger & Conard