while the mixtures are supported by sieves, screens, or like mechanical elements

Full Title

Separating solids from solids by subjecting their mixture to gas currents > while the mixtures are supported by sieves, screens, or like mechanical elements

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

SEPARATING SOLIDS FROM SOLIDS; SORTING

Subclass:

SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL