Sheet transfer drum for printing presses

Details Sheet transfer drum for printing presses Sheet transfer drum for printing presses

1975-11-13

1977-01-25

Crowder, Clifford D.

Printing

Work supporting members

Grippers

270 60, B41F 130

Patent

active

040045129

ABSTRACT:
Sheet transfer drum for a printing press includes a shaft, a drum body fixed to the shaft, the drum body including a tube segment having two longitudinal edges, and respective guide rings fixed to both ends of the tube segment, the longitudinal edges of the tube segment defining a gap therebetween a gripper assembly is received in the gap and includes a gripper shaft, a row of grippers fixed to the gripper shaft and a vertically adjustable gripper bearing bar cooperating with the row of grippers for gripping a sheet to be transferred by the sheet transfer drum. A bearing is received in the gap for securing the gripper assembly to the shaft. The guide rings are formed with respective slots extending in peripheral direction of the drum body, and threaded fasteners respectively extend through the slots and releasably secure the guide rings to the shaft within the range of the slots.

REFERENCES:
patent: 3643598 (1972-02-01), Papa

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