(under subclass 385) Devices wherein reciprocating wipers operate in contact with sifting elements to keep the sifting passages clear.
(1) Note. The preceding sifter with reciprocating agitator subclasses should be searched.
SEE OR SEARCH CLASS
55, Gas Separation,
296+, for devices such as wipers or brushes having relative traversing motion with respect to the separator to clear it of residue and see other related subjects in subclasses 282+.