Sheet infeed mechanism for a printing machine

Details Sheet infeed mechanism for a printing machine Sheet infeed mechanism for a printing machine

1987-09-08

1988-08-09

Pearson, Charles

Printing

Work supporting members

Grippers

101246, B41F 2104

Patent

active

047620650

ABSTRACT:
This invention is an infeed mechanism for a sheet fed printing machine comprising a chute for guiding a sheet from a staging position into an array of moving grippers. To improve the reliability and accuracy of placement of the sheet leading edge into the gripper throat, a plurality of flexible strips, each longer than the one above, is attached to the chute bottom edge facing the grippers, the strips coming into sequential resilient contact with the open gripper fingers. The strips therefore become a flexible extension of the lower edge of the chute and serve to constrain the sheet lead edge movement into the moving gripper fingers regardless of instantaneous mechanical misalignments and sheet imperfections.

REFERENCES:
patent: 1026606 (1912-05-01), Robb
patent: 1095125 (1914-04-01), Rogers et al.
patent: 1895124 (1933-11-01), Crafts et al.
patent: 2095498 (1937-10-01), Hanouer
patent: 2378478 (1945-06-01), Harless
patent: 2378523 (1945-06-01), Worthington
patent: 2406205 (1946-08-01), Davidson et al.
patent: 3196767 (1965-07-01), Eichorn

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