Filter presses for separating solids from liquids

Claim 1

A FILTER PRESS COMPRISING A PLURALITY OF FILTER PLATES, FILTER CLOTHS ON BOTH SIDES OF SAID FILTER PLATES, FILTER FRAMES DISPOSED IN ALTERNATION BETWEEN SAID FILTER PLATES, MEANS TO SUPPORT SAID FILTER PLATES AND FILTER FRAMES IN CONTIGUOUS RELATION, MEANS DEFINING EXPANSIBLE CHAMBERS CARRIED BY THE FILTER FRAMES, EACH EXPANSIBLE CHAMBER HAVING A PAIR OF ELASTIC SIDE WALLS EACH OF WHICH CONFRONTS THE FILTER CLOTH ON AN IMMEDIATELY ADJACENT FILTER PLATE AND DEFINES WITH THAT FILTER CLOTH A FILTER CHAMBER, MEANS SPACING SAID SIDE WALLS APART SO AS TO ENABLE THEM TO STRETCH TOWARDS EACH OTHER UNDER THE ACTION OF EXTERIOR PRESSURE, MEANS FOR ADMITTING A SLURRY INTO SAID FILTER CHAMBERS THROUGH SAID FILTER FRAMES, MEANS FOR ABDUCTING A FILTRATE FROM BENEATH SAID FILTER CLOTHS THROUGH SAID FILTER PLATES, AND MEANS FOR ADMITTING AND WITHDRAWING A FLUID PRESSURE MEDIUM INTO AND FROM SAID EXPANSIBLE CHAMBERS.