Sheet transfer apparatus for printing machine

Details Sheet transfer apparatus for printing machine Sheet transfer apparatus for printing machine

1977-07-07

1979-01-02

Schacher, Richard A.

Sheet feeding or delivering

Feeding

By means to convey sheet

101246, 271 82, 271196, B65H 2906, B65H 512

Patent

active

041324030

ABSTRACT:
Sheets are displaced from a supply to a continuously rotating receiver drum in a printing machine by means of a transfer drum having at least two angularly spaced grippers. The drum carrying the gripper is rotated at a relatively slow speed, and each of the grippers can be angularly displaced on the transfer drum and relative to the other gripper. Thus each gripper is accelerated after it picks up a sheet at the pickup station so that when it reaches a transfer station where it passes the sheet off to the receiver drum it is moving at the same speed as the receiver drum. Thereafter each gripper is uniformly decelerated so that when it has returned to the pickup station it is moving at the same speed as the sheet thereat.

REFERENCES:
patent: 2794637 (1957-06-01), Rugg
patent: 3764128 (1973-10-01), Bolza-Schunemann
patent: 3871645 (1975-03-01), Buttner
patent: 4050574 (1977-09-01), Chenevard

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