(under subclass 213) Devices including rotating cylinders or drums having other than vertical axes constituting magnetic elements which attract responsive components of material to or toward their exterior surfaces.
(1) Note. This subclass will include structures in which the cylinders or drums are themselves magnetic or composed of assembled magnetic elements or are composed of magnetizable material or assembled elements of magnetizable material with movable or stationary inducing magnets. It does not include rotating cylinders or drums surrounding stationary magnets where the cylinders or drums themselves are not magnetic and serve merely as shields or conveyors.
