Apparatus for opening envelopes

Details Apparatus for opening envelopes Apparatus for opening envelopes

1991-11-01

1992-10-20

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

493465, 533817, B65B 4326, B65B 4339

Patent

active

051565854

ABSTRACT:
First and second drive rollers and a slideway feed in an envelope to be opened. A third drive roller drives the body of the envelope in a direction parallel to the fold connecting the flap to the body of the envelope, the drive roller rolling over the face opposite from the face against which the flap of the envelopes folded down, without rolling over the region close to the fold. A counter roller situated facing the drive roller, rolls over the face against which the flap is folded down, without rolling over the flap. An idler wheel situated facing the drive roller has a rim which rolls over the flap close to the fold connecting the flap to the body of the envelope, and which penetrates into the cylindrical volume defined by the straight generator lines of the third drive roller, so as to arch the body about an axis approximately parallel to the fold. A freely rotatable cone moves the flap and the body apart by being inserted into the space created by the arching. Guides remove an envelope while keeping it open.

REFERENCES:
patent: 3935800 (1976-02-01), Sette et al.
patent: 3974749 (1976-08-01), Luperti et al.

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