(under subclass 268) Reciprocating sifters adapted to sift material suspended in liquid or associated with liquid-supply means adapted to promote the sifting operation.
(1) Note. Cases in which the liquid is employed for stratifying or liquid suspension separation and sifting is merely incidental are not included.
SEE OR SEARCH THIS CLASS, SUBCLASS:
12.1, 13, 14, 17, 42, and 44, for combinations of sifting and fluid suspension or stratifying type separations.
423, through 427, for stratifiers employing a movable permeable bed.
SEE OR SEARCH CLASS
162, Paper Making and Fiber Liberation, 355+, and 365 for vibrating screen molds employed in felting a fibrous product.
