Steam generator organization

Claim 1

A VAPOR GENERATOR OF THE ONCE-THROUGH TYPE HAVING A FURNACE; MEANS FOR BURNING FUEL WITHIN SAID FURNACE; MEANS FOR CONVEYING COMBUSTION GASES FROM SAID FURNANCE; A THROUGH-FLOW CIRCUIT COMPRISING A FIRST PORTION INCLUDING TUBULAR SURFACE LINING THE WALLS OF SAID FURNANCE; A SECOND PORTION INCLUDING A PLURALITY OF PLATENS LOCATED AT THE OUTLET OF SAID FURNANCE AND BEING POSITIONED PARALLEL TO EACH OTHER, A THIRD PORTION INCLUDING STEAM HEATING SURFACE LOCATED IN SAID GAS CONVEYING MEANS; SAID FIRST, SECOND, AND THIRD PORTIONS ARRANGED TO CONVEY FLUID SERIALLY THERETHROUGH; LOW PRESSURE STEAM HEATING SURFACES LOCATED IN SAID GAS CONVEYING MEANS; EACH OF SAID PLATENS COMPRISING A PLURALITY OF HORIZONTAL INTERMESHED TUBES AND LOCATED INTERMEDIATE SAID FURNANCE AND SAID LOW PRESSURE STEAM HEATING SURFACE SO AS TO EFFECTIVELY SHIELD SAID LOW STEAM HEATING SURFACE FROM A LARGE PORTION OF THE RADIANT HEAT EMANATING FROM SAID FURNANCE; MEANS FOR PASSING A SUBSTANTIALLY GREATER QUANTITY OF FLUID THROUGH SAID FIRST AND SECOND PORTIONS THAN THROUGH SAID THIRD PORTION; SAID LOW PRESSURE STEAM HEATING SURFACE INCLUDING A PLURALITY OF ASSEMBLIES, EACH COMPRISED OF A PLURALITY OF TUBES INTERMESHED WITH EACH OTHER AND IN THE SAME PLANE AS CORRESPONDING PANELS, AND LOCATED AT A HIGHER ELEVATION; A PLURALITY OF SUPPORT TUBES FOR THE PLATENS AND ASSEMBLIES COMPRISING PAIRS OF TUBES PASSING PARALLEL TO THE PLATENS ADJACENT THE LOWER EDGE THEREFOR, SAID TUBES DIVIDING AND PASSING UPWARDLY WITH ONE TUBE ON EACH SIDE OF THE CORRESPONDING PLATEN AND ASSEMBLY; MEANS FOR SUPPORTING