Cooler for sinter and the like

Claim 1

A SINTER COOLER COMPRISING A STRUCTURE HAVING INNER AND OUTER SPACED CIRCULAR WALLS OF TRUNCATED CONCIAL SHAPE CONCENTRIC ABOUT A VERTICAL AXIS, SAID WALLS BEING OF LOUVRELIKE CONSTRUCTION FOR THE PASSAGE OF AIR THERETHROUGH, THE ANNULAR SPACE BETWEEN THE TWO WALLS BEING A SINTER COOLING SPACE, A CONCIAL IMPERFORATE COVER OVER THE INNER WALL, THE SPACE WITHIN THE INNER WALL AND UNDERSAID COVER CONSTITUTING AN AIR PLENUM, MEANS FOR SUPPLYING AIR UNDER PRESSURE TO THE AIR PLENUM, A SHELL AROUND THE OUTER WALL AND EXTENDING OVER THE INNER WALL, AND AIR ESCAPE AND THE CONICAL COVER OVER THE INNER WALL, AND AIR ESCAPE PASSAGE LEADING FROM THE SHELL, A MATERIAL RECEIVING HOPPER IN THE SHELL CENTERED OVER THE SAID CONICAL COVER FOR DISCHARGING MATERIAL VERTICALLY ONTO THE CONCIAL COVER, MEANS AT THE BOTTOM OF SAID SPACE FORMING A CIRCULAR SERIES OF CONTIGUOUS HOPPERS HAVING DOWNWARDLY-CONVERGING SIDE WALLS, SAID HOPPER BEING LOCATED BELOW THE LOUVERED CIRCULAR WALLS, A VIBRATORY CONVEYOR EXTENDING RADIALLY IN-