Perforated web feeding apparatus

Details Perforated web feeding apparatus Perforated web feeding apparatus

1986-09-30

1987-11-17

Levy, Stuart S.

Advancing material of indeterminate length

Means to engage longitudinally spaced modifications in material

Pins on flexible belt or chain

G03B 130

Patent

active

047068612

ABSTRACT:
Web feeding apparatus which may be in the form of a tractor which feeds perforated webs, such as perforated paper in a computer printer, typewriter or the like has a frame which locates a belt having pins projecting from the belt which enter the perforations in the paper and drive the paper when the belt is driven, as by a sprocket which is journalled in the frame. In the closed position, the lid overlies the belt and presents a surface adjacent the belt which is separated by a gap through which the paper passes when it is engaged with the pins. The paper also overlies the surface of the inside side plate. The gap spacing (the distance which separates the surface of the belt on which the paper is disposed) is set automatically by a gap setting member which projects from the lid and is biased with the lid into engagement with the paper when the lid is in closed position and the belt is in driving relationship with the paper. The gap setting member may be a rib or runner projecting downwardly from the lid and extending along the surface of the inside side plate.

REFERENCES:
patent: 4129239 (1978-12-01), Hubbard
patent: 4611737 (1986-09-01), Hubbard et al.
patent: 4643603 (1987-02-01), Hauslaib

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