(under subclass 90) Device provided with means to urge a stack of sheets in a direction such that the foremost sheet of the stack is in a position appropriate for removal of a single sheet.
(1) Note. The device of this and indented subclasses is usually for feed from the top of a stack, or for feed from a stack of on edge or imbricated sheets. A device of this and indented subclasses is usually for feed from the bottom of the stack and would not be found herein (since a bottom-feet mechanism does not have a stack urging means) unless the patent thereto also claimed a weight for urging the stack toward the bottom of the hopper.
SEE OR SEARCH THIS CLASS, SUBCLASS:
22, 24+, 37+, 126+, and 128+, for a device including a pack advancer in combination with a separator of a type appropriate to the subclass under which the pack advancer is indented.
