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Paper folding apparatus

  • US 4,089,514 A
  • Filed: 09/07/1976
  • Issued: 05/16/1978
  • Est. Priority Date: 09/07/1976
  • Status: Expired due to Term
First Claim
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1. Apparatus for longitudinally folding a paper web moving longitudinally comprising;

  • a folding device having entrance and exit ends and an elongated flat central portion lying along the path of the moving web, said device having transversely spaced-apart elongated channels, said channels having entrance channel portions disposed on opposite sides of the central portion and opening toward one another at said entrance end, said channels being longitudinally twisted approximately 180°

    along their length and folded over toward one another to overlie said central portion so that said channels open in opposite directions away from one another at said exit end and overlie said central portion to form exit channel portions which open toward one another at said exit end, said exit channel portions communicating with open portions of the twisted channels at the exit end so that the cross-sectional shape of the folding device at said exit end is generally like that of two U'"'"'s positioned with their openings facing one another.

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