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US 4,190,242 AGranted
Gear folder
AssigneeKoenig & Bauer Aktiengesellschaft
InventorHans B. Bolza-Schunemann
Life of this patent
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AssigneeKoenig & Bauer Aktiengesellschaft
InventorHans B. Bolza-Schunemann
Estimating the term…
A gear folder for folding paper webs or sheets is provided with a cutting knife cylinder, a counter-cut groove cylinder, and a collecting and folding blade cylinder. The collecting cylinder has an odd number of fields for receipt of sheets and further includes an internal folding blade carrier having an even number of folding blades which selectively project through the periphery of the collecting cylinder to transfer a web to suitable folding rollers. Each of the fields of the collecting cylinder is provided with a pin set to retain the web on the periphery of the cylinder. The pin sets are controlled to selectively retract in conjunction with the projection of the folding blades to allow transfer of a selected sheet or stack of sheets to the folding rollers. The frequency of retraction of the pin sets and projection of the folding blades can be varied to transfer the sheets to the folding rollers after each revolution or only after several revolutions of the collecting drum.
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;
Dependencies are inferred from the claim text.