High speed envelope feeding apparatus

Details High speed envelope feeding apparatus High speed envelope feeding apparatus

1988-04-08

1989-07-11

Butler, Douglas C.

Sheet feeding or delivering

Special articles

Envelope

271 4, 271 10, 271129, 271184, 271225, B65H 500

Patent

active

048464554

ABSTRACT:
A high speed envelope feeder is provided with a pair of pinch rolls for extracting an envelope from a stack of closed envelopes in a magazine. The flap of a closed envelope is opened by raising a cam surface under the flap to position the flap between a fixed pinch roll and a movable pinch roll. The movable pinch roll is articulated to grasp the flap between the pinch rolls. The flap is pulled to extract the envelope from the magazine and is subsequently pushed by the pinch rolls into the transport device.

REFERENCES:
patent: 2038645 (1936-04-01), Cherry et al.
patent: 2554577 (1951-05-01), Lauffer
patent: 2572509 (1951-10-01), Norick
patent: 3962848 (1976-06-01), Hankins
patent: 4227687 (1980-10-01), Schoonmade
patent: 4690392 (1987-09-01), Coons, Jr.
patent: 4756521 (1988-07-01), Martin

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