Material or article handling – Movable rack having superposed – charge-supporting elements,... – Rack moved vertically by elevating means
Patent
1982-03-18
1984-07-31
Paperner, Leslie J.
Material or article handling
Movable rack having superposed, charge-supporting elements,...
Rack moved vertically by elevating means
271 30A, 271 94, 271150, 414786, B65G 5900, B65H 512
Patent
active
044627459
ABSTRACT:
A method and apparatus for serially removing the forwardmost plate from a stack of plates comprises rotating a cylindrical carrier having a chordal segment defined on its periphery with the stack of plates oriented so that the forwardmost plate is tangentially adjacent to the periphery of the carrier. A vacuum source draws air into an air inlet located on the chordal segment thereby creating a low pressure area. Accordingly as the chordal segment becomes parallel with the stack the low pressure causes the forwardmost plate to be drawn into contact with the chordal segment and thus block the air inlet. The plate continues to rotate with the carrier until it reaches a desired location where an air valve causes the vacuum to be temporarily discontinued thus allowing the plate to drop free of the carrier. An advance mechanism causes the stack to be advanced one plate thickness during each rotation of the carrier to position the next plate into contact with the carrier after each plate has been removed.
REFERENCES:
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patent: 2804974 (1957-09-01), Noon
patent: 2847213 (1958-08-01), Duncanson et al.
patent: 3148876 (1964-09-01), Chandler et al.
patent: 3212772 (1965-10-01), Ward
patent: 3341192 (1967-09-01), McMahon
patent: 4177982 (1979-12-01), Bewersdorf et al.
patent: 4349126 (1982-09-01), Braun
Johnson Peter E.
Young James
Krizek Janice
Paperner Leslie J.
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