Printing – Rolling contact machines – Rotary
Patent
1985-03-18
1986-12-02
Eickholt, E. H.
Printing
Rolling contact machines
Rotary
400624, 271 2, 271 9, 271236, 271254, B61F 1364
Patent
active
046256415
ABSTRACT:
Multiple simultaneous envelope duplicating apparatus has a windowed feed elevator supplying envelope stacks to an offset duplicator. The elevator has an open frame supporting a pair of spaced apart parallel envelope stack supporting plates. The plates and the frame define windows for receiving in vertically movable relationship, guide members to maintain the envelope stacks upright and in alignment with suction feet at a receiving station of the offset duplicator. A delivery end of the duplicator having a receding stacker also has an open frame supporting a pair of spaced apart envelope stack supporting plates to receive printed envelopes, and define windows for receiving in vertically movable relationship, a second set of guide members to maintain the printed envelope stacks upright. Upright member supporting bases are adjustable so that the guide members can be fitted to bound the sides of different sized envelopes. Bulk envelope chargers have envelope receiving side plates and a back retaining plate. The plate is movable in response to a plunger to cause a stack of envelopes to engage a region beneath the feed station of the offset press and on the envelope stack supporting plates to bulk feed envelopes.
In operation, after loading envelopes by the charger, two envelope stacks move upward to the feed region where suction feet strip the top envelopes of the stacks simultaneously feeding in alignment two envelopes to the printing path of the offset press. The guide members retain the stacks in an upright position, the frame being allowed to pass upward without interference by the guide members.
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Jagosz Theodore T.
Tepe David J.
Eickholt E. H.
Supnik Paul D.
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