Accessory for drum drier

Claim 1

IN A FILM DRYING APPARATUS OF THE TYPE HAVING TWO CLOSELY SPACED ROTATABLE DRUMS NORMALLY ADAPTED TO HOLD A PUDDLE OF VISCOUS LIQUID IN THE NIP AREA BETWEEN THE UPPER ADJACENT SURFACES OF SAID DRUMS, THE IMPROVEMENT WHICH COMPRISES A CONTAINER FOR HOLDING SAID LIQUID, THE CONTAINER BEING DISPOSED IN SISD NIP AREA AND HAVING AN ADJUSTABLE OPENING ONITS UNDERSIDE PERMITTING DISCHARGE OF SAID LIQUID INTO SAID SPACE SUBSTANTIALLY UNIFORMLY OVER THE LENGTH OF THE DRUMS'' DRYING AREA, SAID CONTAINER COMPRISING AN ELONGATED TROUGH OF DOWNWARDLY DECREASING CROSS SECTION HAVING TWO END MEMBERS AND TWO ELONGATED SAID MEMBERS, THE SIDE MEMBES OF SAID TROUGH BEING CURVILINEAR WITH CURVES HVING AXES OF CURVATURE APPROXIMATELY COINCIDING WITHTHE RSPECTIVE AXES OF SAID DRUMS, AND A LEVEL CONTROLLER ASSOCIATED WITH SAID TROUGH FOR MAINTAINING THE HEIGHT OF LIQUID TO BE DRIED WITHIN THE TROUGH AT A PRESELECTED LEVEL.