F26B 17/1475

Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity {, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft} the materials moving through a counter-current of gas {the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being in movement the movement being a vibration or oscillation }