(under subclass 214) Apparatus having means in addition to the pressure surface actuating means for securing the pressure surface against motion relative to the opposed pressure surface either in a position where the press is empty or in a position in which the material compressed is held in compacted condition between the pressure surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
78, for presses which wind or fold a sheet, web or strand and have means to retain the material in the folded or wound shape.
204, for box or pot type stacked box plural presses having means to lock the compressing surfaces with the material compacted between them under compression.
220, for apparatus for restraining the compacted material within the press other than some means to hold the platen.
274, for intermittent actuators which move the platen step by step in the compressing direction and a means for arresting the restoring motion of the platen between steps.
