Advanced apparatus for gripping flexible, and in particular text

Details Advanced apparatus for gripping flexible, and in particular text Advanced apparatus for gripping flexible, and in particular text

1987-02-24

1989-04-18

Rolla, Joseph J.

Sheet feeding or delivering

Feeding

Separators

271 19, 294 61, B65H 322

Patent

active

048220205

ABSTRACT:
The present invention relates to an apparatus for gripping layers of flexible material, comprising a head (14) provided with a contact surface, a clearance (16) in the said surface, a needle (103) mobile with respect to the head, a thin groove (15) in the head and kinematic guide means for the needle in the plane of the groove (15). According to the present invention the contact surface is provided with a step (102) and has a recessed area (100) and a protruding area (101). Two contact pins (110, 111) are in a preferred embodiment located either side of the groove (15) level with the recessed area. These measures improve the superficial catching conditions of the upper layer of the flexible material to be seized and avoid the risk of seizing the layer below.

REFERENCES:
patent: 3902750 (1975-09-01), Roitel
patent: 4437655 (1984-03-01), Bijttebier et al.
patent: 4601463 (1986-07-01), Goto et al.
patent: 4635918 (1987-01-01), Rouleau et al.

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