Drying system for paper-making machinery and the like

Claim 1

A DRYING MACHINE COMPRISING: A FIRST SET OF ROLLS HAVING PARALLEL HORIZONTAL AXES LYING IN A HORIZONTAL PLANE, SAID ROLLS BEING CYLINDRICAL AND BEING IN HORIZONTALLY SPACED RELATION IN THE ROW; A SECOND ROW OF CYLINDRICAL ROLLS HAVING PARALLEL AXES LYING IN A HORIZONTAL PLANE ABOVE THE HORIZONTAL PLANE OF THE FIRST SET OF ROLLS, SAID SECOND SET BEING IN A ROW DISPOSED ABOVE SAID FIRST ROW WITH THE AXES OF THE ROLLS OF SAID SECOND ROW LYING IN VERTICAL PLANES DISPOSED BETWEEN THE AXES OF THE ROLLS OF THE FIRST ROW; A THIRD SET OF ROLLS HAVING PARALLEL AXES LYING IN A THIRD HORIZONTAL PLANE BETWEEN THE FIRST AND SECOND MENTIONED HORIZONTAL PLANE WITH THE ROLLS OF SAID THIRD SET BEING SUBSTANTIALLY SMALLER THAN THE ROLLS OF SAID FIRST SET AND DISPOSED BETWEEN PORTIONS OF SAID ROLLS OF SAID FIRST SET; A FOURTH SET OF ROLLS DISPOSED IN A ROW AND HAVING PARALLEL AXES LYING IN A FOURTH HORIZONTAL PLANE DISPOSED BETWEEN SAID SECOND MENTIONED AND SAID THIRD MENTIONED HORIZONTAL PLANES WITH THE ROLLS OF SAID FOURTH SET BEING DISPOSED BETWEEN PORTIONS OF THE ROLLS OF SAID SECOND SET AND ABOVE THE ROLLS OF SAID FIRST SET; A FIRST ENDLESS FELT BELT OPERATING ON THE ROLLS OF SAID FIRST AND THIRD SETS; AND A SECOND ENDLESS FLET BELT OPERATING ON THE ROLLS OF SAID SECOND AND FOURTH SETS; A WARM AIR SUPPLY SOURCE; A PLURALITY OF HORIZONTALLY DISPOSED DISTRIBUTION DUCTS EXTENDING TRANSVERSELY OF THE MACHINE AND COMMUNICATING WITH SAID SOURCE, SAID DUCTS BEING DIVIDED INTO A FIRST GROUP DISPOSED BELOW THE ROLLS IN SAID THIRD SET AND A SECOND GROUP DISPOSED ABOVE THE ROLLS IN SAID FOURTH SET, WITH SAID DUCTS OF THE FIRST GROUP HAVING DISCHARGE NOZZLES DISCHARGING AIR ON PORTIONS OF SAID FIRST FELT BELT SPANNING SPACES BETWEEN ROLLS OF SAID FIRST AND THIRD SETS AND SAID DUCTS OF THE SECOND GROUP HAVING DISCHARGE NOZZLES DISCHARGING AIR ON PORTIONS OF SAID SECOND FELT BELT SPANNING SPACES BETWEEN ROLLS OF SAID SECOND AND FOURTH SETS, TO DRY SAID SPANNING PORTIONS OF SAID BELTS, SAID DUCTS BEING ADJUSTABLE BY ROTATION ON AXES PARALLEL TO THE AXES OF SAID ROLLS, ONE OF SAID DUCTS OF SAID FIRST GROUP HAVING FIRST, SECOND AND THIRD DISCHARGE NOZZLES SPACED ALONG THE LENGTH THEREOF AND EACH OF SAID FIRST, SECOND AND THIRD NOZZLES HAVING A SET OF ADJUSTABLE LOUVERS THEREIN, ALL LOUVERS OF A SET BEING ADJUSTABLE EQUALLY AND SIMULTANEOUSLY AND BEING IN PARALLEL RELATIONSHIP TO EACH OTHER, AND THE SET IN EACH NOZZLE BEING ADJUSTABLE INDEPENDENTLY OF