Abstract: The present invention concerns a caser for quickly organizing variously sized containers into a plurality of predetermined patterns and then simultaneously filling an equal plurality of individual cases with that predetermined number of products. The caser of the present invention includes two parallel in-feed conveyors each delivering a single file continuous stream of containers to a loading area. Clamp and sensor means provide for regulating a predetermined number of containers into a pattern forming area from each conveyor. After a pattern is formed by an alternating pusher means that provides for pushing the group of containers either right or left to a position over one of two loading areas. Each loading area includes trap door means and a gripper head assembly. Each gripper head assembly includes a plurality of gripper heads each for gripping one of the plurality of patterns of containers. The gripper heads provide for gripping the containers and lowering them into cases after the trap door means open.