Web moisture profile control for paper machine

Claim 1

IN A DRIER PARTICULARLY ADAPTED TO DRY A FIBROUS WEB OF MATERIAL AND IN COMBINATION WITH A ROTATABLE DRYING DRUM HAVING A WEB TRAVELING THEREABOUT, A HOOD EXTENDING ABOUT A PORTION OF THE CIRCUMFERENCE OF THE DRYING DRUM, AT LEAST ONE DRYING HEAD IN SAID HOOD HAVING A BOTTOM WALL GENERALLY CONFORMING TO SAID DRYING DRUM AND THE WEB TRAVELING THEREABOUT AND HAVING A PLURALITY OF AIR IMPINGEMENT NOZZLES LEADING THERETHROUGH, A PLURALITY OF PARALLEL SPACED BAFFLES WITHIN SAID DRYING HEAD AND CONFORMING TO AND EXTENDING ALONG SAID BOTTOM WALL IN THE DIRECTION OF ROTATION OF SAID DRYING DRUM AND DIVIDING SAID DRYING HEAD INTO A PLURALITY OF ADJACENT PLENUM CHAMBERS, AN AIR SUPPLY DUCT, INDIVIDUAL CONDUITS LEADING FROM SAID AIR SUPPLY DUCT TO SAID PLENUN CHAMBERS, MEANS FOR SUPPLYING HEATED AIR TO SAID AIR SUPPLY DUCT AND WITHDRAWING SPENT AIR FROM SAID HOOD, VALVE MEANS IN SAID CONDUITS OPERABLE TO CONTROL THE DISTRIBUTION OF AIR ACROSS THE WIDTH OF THE WEB, AND MEANS OPERABLE TO VARY THE SPACING OF SAID BAFFLES ALONG SAID BOTTOM WALL AT THE SELECTION OF THE OPERATOR OF THE DRYER.