(under the class definition) Methods and apparatus by which mixtures of materials having components of different mass, due to differences in size, specific gravity, or both, are assorted by being caused to stratify and at least one stratum collected separately from the rest of the material.
(1) Note. This subclass takes such methods and apparatus as are not definitely classifiable in the subclasses indented hereunder.
(2) Note. The distinction between the subclasses indented hereunder which involve fluid treatment and those preceding involving fluid suspension is that in the former the material is not all subjected to free suspension by the fluid in such wise as to be all transported substantial distances and separated by settling out from the fluid suspension at varying distances from the points of initial application of the fluid or all subjected to free suspension and the heavier permitted to drop out of the suspension in such wise as not to form a stratum. Where the heaviest components form a stratum and the others form one or more strata or are carried off by the fluid, the device is classified as a stratifier, while where there is no definite stratum of heaviest components it is classified as a fluid suspension device.
SEE OR SEARCH CLASS
241, Solid Material Comminution or Disintegration,
15+, and 38+ for comminutors combined with stratifiers.
