Retractable pin sprocket wheel assembly

Details Retractable pin sprocket wheel assembly Retractable pin sprocket wheel assembly

1984-05-31

1986-02-18

Coughenour, Clyde I.

Typewriting machines

Sheet or web

For feeding web record-medium

226 76, B41J 1127

Patent

active

045711046

ABSTRACT:
A platen assembly, including a cylindrical platen, for advancing a web of record material through a printing device, the record material having perforations along its borders for receiving pins disposed in pin sprocket wheel assemblies mounted on opposite ends of the platen.

REFERENCES:
patent: 2000649 (1935-05-01), Sherman
patent: 2112833 (1938-04-01), Dybvig
patent: 2414478 (1947-01-01), Metzner
patent: 2683519 (1954-07-01), Davidson
patent: 2815672 (1957-12-01), Storer
patent: 4033493 (1977-07-01), Levinson
patent: 4133613 (1979-06-01), Webster
patent: 4469263 (1984-09-01), Seitz

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