Sheet feeding or delivering – Feeding – Separators
Patent
1992-02-27
1993-07-06
Skaggs, H. Grant
Sheet feeding or delivering
Feeding
Separators
271 96, 271100, 271102, 271107, 271108, 221153, B65H 312
Patent
active
052246949
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 latch arrangement is contemplated. The 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 upon receipt from a signature supply hopper. A suction 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 suction assembly includes oscillating suction grippers together with a vacuum control valve. The signature feeding apparatus further includes a cam follower operatively associated with the suction assembly to control movement of the oscillating suction grippers and operation of the vacuum control valve. With this arrangement, a latch is provided for latching the cam follower in a position out of the full path of movement of the cam to selectively disable the operating suction grippers and the vacuum control valve.
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Druzbick Carol Lynn
R. R. Donnelley & Sons Co.
Skaggs H. Grant
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