Abstract: Loose materials capable of fluidic flow are transferrable from a container via a neck or spout assembly which includes coaxially telescoping tubular members with the inner member having specially designed sidewall ports in communication through the inner member into the interior of the container to which the neck assembly is attached. The outer tubular member is biased so as to normally overlie the ports in closing relation. The neck assembly is adapted for use in transferring the materials into another container in which the other container includes an access opening in a lid or endwall dimensioned to permit passage of the inner tubular member of the neck assembly while blocking passage of the outer tubular member thereby permitting opening of the ports. The second container assembly can also include a resiliently biased plug mounted interiorly thereof for normally closing the access opening.

Abstract: In xerographic reproducing apparatus using dry powdered toner, means is provided for applying a series of periodic mechanical tapping impulses to the toner dispenser to promote uniformity of toner dispensing and obtain clearer, sharper copies. The tapping means comprises a base affixed to the toner dispenser, a movable hammer for striking the base and electromagnetic means for periodically actuating the hammer to strike the base and thereby generate periodic mechanical tapping impulses which are conductively transmitted to the toner dispenser.

Abstract: A measuring dispenser wherein a generally cylindrical drum having a transverse wall is positioned at the bottom of a canister, and a longitudinally movable partition with a transverse wall is inserted within the drum so that variable volume measuring chambers are provided by longitudinally moving the partition within the cylindrical drum.