Device for applying a thin coating on an article

Claim 1

IN A DEVICE OF THE CHARACTER DESCRIBED COMPRISING A COMBINATION OF A CONTAINER HAVING VERTICALLY DISPOSED SIDE WALLS ADAPTED TO RECEIVE A LIQUID COMPOSITION THEREIN AND A DISH-LIKE FLOAT ADAPTED TO BE POSITIONED ON SAID LIQUID COMPOSITION WITHIN SAID CONTAINER, SAID DISK-LIKE FLOAT BEING SO DIMENSIONED VERTICALLY AND THE AMOUNT OF LIQUIDS COMPOSITION, WHEN PLACED IN SAID CONTAINER, BEING SO CONTROLLED AS TO LOCATE THE UPPER EDGE OF SAID FLOAT A GIVEN DISTANCE BELOW THE UPPER EDGE OF THE SIDE WALLS OF THE CONTAINER, SAID DISH-LIKE FLOAT HAVING A VERTICALLY DISPOSED HOLLOW CENTRAL PORTION FORMED WITH A CIRCULAR UPPER EDGE LYING IN A PLANE AT A GIVEN DISTANCE BELOW THE UPPER EDGE OF SAID FLOAT, SAID HOLLOW CENTRAL PORTION HAVING A WALL PORTION EXTENDING TRANSVERSELY THEREOF AT A LOCATION A WALL THE UPPER CIRCULAR EDGE OF SAID HOLLOW PORTION AND SAID WALL PORTION HAVING A RESTRICTED PERFORATION THEREIN NORNALLY AT A LOCATION ABOVE THE LEVEL OF THE LIQUID COMPOSITION AND THROUGH WHICH SAID LIQUID COMPOSITION MAY BE FORCED TO FORMED THE DISH-LIKE FLOAT IS MOVED IN A DOWNWARD DIRECTION WITHIN SAID CONTAINER.