Dehumidifying coin tube

Claim 1

A DESICCATING COIN HOLDER COMPRISING A CYLINDRICAL TUBE OF TRANSPARENT, PLASTIC MATERIAL, HAVING A CAVITY OF UNIFORM BORE, WITH A RADIALLY INWARDLY EXTENDING ANNULAR SHELF ADJACENT THE BOTTOM THEREOF, A DESICCANT IN SAID CAVITY, BELOW SAID SHELF, A CIRCULAR SCREEN SUPPORTED ON SAID SHELF, A WASHER OR RUBBERY MATERIAL ON SAID SCREEN, AND FRICTIONALLY ENGAGING THE WALL OF SAID CAVITY, SAID TUBE HAVING AN OUTER ANNULAR GROOVE NEAR ITS TOP, AN OUTER PERIPHERAL RABBET IN ITS TOP RIM WITH A RADIAL DEPTH EQUAL TO THAT OF THE GROOVE, AND DEFINING, WITH THE GROOVE, AN ANNULAR, OUTER RIB ON THE TUBE, SAID RIB BEING OF LESSER OUTER DIAMETER THAN SAID TUBE, SAID RIB HAVING A PAIR OF DIAMETRICALLY OPPOSITE SLOTS, EXTENDING TO THE DEPTH OF SAID GROOVE, AND A CYLINDRICAL CAP OF TRANSPARENT, PLASTIC MATERIAL, HAVING A CLOSED TOP, AND A SKIRT WITH AN OUTER DIAMETER EQUAL TO THAT OF SAID TUBE, AND AN INNER DIAMETER SLIDABLY FITTING OVER SAID RIB, A PAIR OF RADIALLY INWARDLY EXTENDING EARS ON SAID SKIRT PASSING THROUGH SAID SLOTS AND ENGAGING UNDER SAID RIB, AND A WASHER OF RUBBERY MATERIAL BETWEEN THE TOP RIM OF SAID TUBE, AND THE INNER FACE OF THE TOP OF SAID CAP, SAID LATTER WASHER BEING OF A THICKNESS WHEREBY IT IS UNDER COMPRESSION WHEN THE CAP IS LOCKED IN POSITION ON THE TUBE.