Disabling mechanism for signature feeding apparatus

Details Disabling mechanism for signature feeding apparatus Disabling mechanism for signature feeding apparatus

1993-11-29

1994-11-22

Gastineau, Cheryl L.

Sheet feeding or delivering

Feeding

Separators

271100, 271256, 74567, 74569, B65H 308

Patent

active

053662156

ABSTRACT:
In order to avoid disruption of a stack of signatures, particularly when a cyclically operable signature feeding apparatus is temporarily disabled, the utilization of a unique disabling arrangement is contemplated. The signature feeding apparatus will generally include a driven rotary drum having a plurality of signature grippers disposed about the periphery thereof. The signature grippers are adapted to grip signatures seriatim from a signature supply hopper. A vacuum assembly is driven by a cam for shifting signatures seriatim from the signature supply hopper to the rotary drum for gripping by the signature grippers. The vacuum assembly includes a source of vacuum operatively associated with oscillating vacuum grippers. The signature feeding apparatus further includes a cam follower operatively associated with the vacuum assembly to control operation of the vacuum assembly responsive to engagement with a surface of the cam. With this arrangement, a mask is provided for masking the surface of the cam to disable operation of the vacuum assembly upon demand to disable operation of the signature feeding apparatus.

REFERENCES:
patent: 3608893 (1971-09-01), McCain et al.
patent: 4544149 (1985-10-01), Graef et al.
patent: 5014979 (1991-05-01), Higgins et al.
patent: 5029836 (1991-07-01), Swaneck
patent: 5120041 (1992-06-01), Schniter
patent: 5224694 (1993-07-01), Magee

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