(under subclass 484) Devices for cleaning surfaces upon which material has been stratified of material adhering thereto and which is not gravitally discharged.
(1) Note. This subclass does not include conveyors which move strata along the stratifying supports to points of discharge, but will include generally devices which remove
from belt or drum surfaces material adhering thereto after gravital discharge of the stratified material and devices for finally cleaning the surfaces of other types of stratifiers after gravital or other discharge of the heaviest constituents.
