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Gear folder

  • US 4,190,242 A
  • Filed: 10/20/1977
  • Issued: 02/26/1980
  • Est. Priority Date: 11/16/1976
  • Status: Expired due to Term
First Claim
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1. A gear folder for collecting sheets of paper and for folding said sheets, said gear folder including a rotatable, hollow, collecting cylinder, and a folding blade carrier rotating eccentrically within said collecting cylinder, said rotating folding blade carrier carrying four selectively projectable rotating folding blades, said folding blades of said folding blade carrier tracing a three-point hypocycloid, said hollow collecting cylinder having five fields, each of said five fields being equipped with a retractable pin set;

  • control means for selectively retracting each of said pin sets, said control means including a fixed cam disk having a first camming recess and a rotatable cam disk having a second camming recess, each of said pin sets being retracted only when said first and second camming recesses coincide, one revolution of said folding blade carrier coinciding with one 4/5 revolution of said collecting cylinder.

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