(under subclass 363) Devices wherein frames to which sifting elements are attached associated with means for adjusting said frames.
(1) Note. The frames of this subclass and the four following subclasses are not the general supporting frameworks of sifting devices, but those frames to which sifting elements, such as sifting fabric, sheets, or bars,
are attached and one or more of these frames may constitute the sifter proper.
SEE OR SEARCH THIS CLASS, SUBCLASS:
319, which includes adjusting means for one or more of a series of flat reciprocating sifters.
347, and other appropriate sifter subclasses, according to the type of adjustment.
