(under the class definition) Apparatus including mechanism acting to elevate or lower material by gripping the material or supporting removable material carriers, such as trays, so that the carriers may be elevated or lowered during treatment or the mechanism may be used to load or unload the apparatus, plus positive means to treat the material. The trays or supports usually move vertically and in superimposed relation.
(1) Note. See this class, subclass 612 for elevator apparatus restricted to handling or treating sheet material. If sheets are carried on trays adapted to carry other material and the apparatus is not otherwise peculiar to sheet handling, the patents are classified here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
94, and notes thereunder, for apparatus which may raise or lower stacks of sheets.
147, for devices moving material spirally.
165+, where the material moves at least partially by gravity, i.e., falls freely through space.
194, and notes, for means for loading containers on fixed floors, shelves or guides. 203+, for devices feeding material from one conveyor to another at different levels.
SEE OR SEARCH CLASS
198, Conveyors: Power Driven,
346.1, and appropriate indented subclasses, 465.1, 604+, 625, 626+, 663, and 793+.
