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Method and apparatus for filling and closing envelopes

  • US 5,899,050 A
  • Filed: 08/13/1997
  • Issued: 05/04/1999
  • Est. Priority Date: 08/13/1996
  • Status: Expired due to Term
First Claim
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1. An enveloping apparatus, comprising:

  • an envelope filling position for each time holding an envelope with an envelope body, a flap and a hinge line between said envelope body and said flap, in each case with said hinge line in a predetermined position and with said flap in a position opened relative to said envelope body,a document inserting structure comprising a document feed track with a downstream end connecting to the envelope filling position, an insertion guide for inserting documents in an envelope in the envelope filling position,a pair of pressure rollers with an interlocated closing nip at a distance from the envelope filling position and beside the envelope transfer track,upsetting means for at least delaying a leading portion of an envelope in the envelope transfer track relative to a trailing portion, comprising a pair of surfaces located opposite each other on both sides of the envelope transfer track, with an interlocated nip and means coupled to at least one of said surfaces for at least delaying, in activated condition, movement in the direction of transport of said surfaces in the region of the nip, anda control structure for controlling the document inserting structure and the envelope transfer track, adapted to determine the distance over which an envelope is moved from the envelope filling position along the envelope transfer track, and to activate the upsetting means in response to a movement of said envelope from the envelope filling position along the envelope transfer track over a fixed determined distance, independently of the sizes in the direction of transport of said envelope.

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