Delivery apparatus for sheet-fed printing press

A delivery apparatus for a sheet-fed printing press, comprising:

• a holding member for holding a printed paper sheet;
• conveying means for causing said holding member to travel to convey the held paper sheet;
• at least two sheet stacking units respectively arranged at upstream and downstream portions along a sheet convey direction of said conveying means;
• an engaging member, arranged above said sheet stacking unit at the upstream portion, for releasing the held paper sheet by abutting against said traveling holding member;
• and
• switching means for selectively switching said engaging member between a sheet release position where said engaging member abuts against said holding member and a retreat position where said engaging member does not abut against said holding member, said switching means including driving means having a movable actuating rod, a first lever, having two ends pivotally mounted on said actuating rod and said engaging member, respectively, for coupling said actuating member and said engaging member, and a second lever having one end swingably supported and the other end swingably and pivotally mounted on a coupling portion between said actuating rod and said first lever, so that said first and second levers are located substantially on a straight line when said engaging member is at the sheet release position.