Sheet gathering apparatus

Sheet-material associating – Associating or disassociating – Signature associating

Patent

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Details

B65H 3902

Patent

active

047069503

ABSTRACT:
An apparatus for gathering signatures including a hopper for holding a supply of signatures and a rotatable transfer drum positioned horizontally adjacent thereto for extracting a signature from the supply and carrying the signature in a first path about the periphery of the transfer drum. An adjustable stop is provided for limiting the movement of the signature along the first path to cause the signature to be stopped with its front edge portions at a predetermined location. A first spreader drum is mounted beneath the transfer drum assembly with its outer peripheral surface nearly tangential to the outer peripheral surface of the transfer drum at the predetermined location. Grippers are carried by the spreader drum for engaging the front edge portions of the signature engaged with the stop and conveying the signature away from the transfer drum along a second path. A second spreader drum is mounted along the second path adjacent the first spreader drum and is rotatable about an axis parallel to the axis of rotation to define a nip between the first spreader drum and the second spreader drum. Grippers carried by the second spreader drum function to grip a front edge portion of the signature on the side of the signature outwardly of the first spreader drum as the signature passes through the nip and pull the side thus gripped away from the side engaged with the first spreader drum to pull the signature into an inverted V-shape for deposit on a subjacent conveyor.

REFERENCES:
patent: 3481594 (1969-12-01), McCain et al.
patent: 3554532 (1971-01-01), Cosgrove
patent: 3717337 (1973-02-01), McCain et al.
patent: 4085927 (1978-04-01), Muller
patent: 4564186 (1986-01-01), Clarke et al.

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