Method of producing fire retardant particleboard

Claim 1

THE METHOD OF PRODUCING FIRE RETARDANT PARTICLE-BOARD WITH A MINIMUM OF FIRE RETARDANT MATERIAL, WHICH COMPRISES BLOWING PARTICLEBOARD FURNISH AND DRY FIRE RETARDANT CHEMICAL PARTICLES SUBSTANTIALLY PARALLEL TO A MOVING CAUL PLATE IN A DIRECTION OPPOSITE TO THE MOVEMENT THEREOF, THE DENSITY AND PARTICLE SIZE OF SAID PARTICLES BEING SUCH THAT THE FINEST FURNI-SH PARTICLES TRAVELS OUTWARDLY THE FARTHEST TO FORM A LOWER OUTER COURSE WHILE COARSER FURNISH AND CHEMICAL PARTICLES PROGRESSIVELY, ACCORDING TO PARTICLE SIZE AND DENSITY, DEPOSIT ON SAID OUTER COURSE TO FORM AN INNER COURSE, BLOWING ADDITIONAL PARTICLEBOARD FURNISH AND DRY FIRE RETARDANT CHEMICAL PARTICLES SUBSTANTIALLY PARALLEL TO THE CAUL PLATE IN THE DIRECTION OF MOVEMENT THEREOF, THE DENSITY AND PARTICLE SIZE OF SAID ADDITIONAL PARTICLES BEING SUCH TAHT THE COARSER FURNISH AND CHEMICAL PARTICLES TRAVEL OUTWARDLY PROGRESSIVELY, ACCORDING TO PARTICLE SIZE AND DENSITY, TO DEPOSIT ON THE INNER COURSE OF THE PREVIOUSLY-BLOWN PARTICLES AND THE FINER FURNISH PARTICLES TRAVEL OUTWARDLY THE FARTHEST TO FORM AN UPPER OUTER COURSE, SUBJECTING THE MATERIAL TO HEAT AND PRESSURE TO CONSOLIDATE ALL OF SAID PARTICLES INTO A BOARD, AND SANDING OFF PARTICLES OF THE OUTER COURSES TO EXPOSE THE PARTICLES OF SAID INNER COURSES AT FACES OF THE BOARD.

Claim 2

THE METHOD OF PRODUCING FIRE RETARDANT PARTICLE-BOARD WITH A MINIMUM OF FIRE RETARDANT MATERIAL, WHICH COMPRISES BLOWING PARTICLEBOARD FURNISH AND DRY FIRE RETARDANT CHEMICAL PARTICLES SUBSTANTIALLY PARALLEL TO A MOVING CAUL PLATE IN A DIRECTION OPPOSITE TO THE MOVEMENT THEREOF, THE DENSITY AND PARTICLE SIZE OF SAID PARTICLES BEING SUCH THAT THE FINEST FURNI-SH PARTICLES TRAVELS OUTWARDLY THE FARTHEST TO FORM A LOWER OUTER COURSE WHILE COARSER FURNISH AND CHEMICAL PARTICLES PROGRESSIVELY, ACCORDING TO PARTICLE SIZE AND DENSITY, DEPOSIT ON SAID OUTER COURSE TO FORM AN INNER COURSE, BLOWING ADDITIONAL PARTICLEBOARD FURNISH AND DRY FIRE RETARDANT CHEMICAL PARTICLES SUBSTANTIALLY PARALLEL TO THE CAUL PLATE IN THE DIRECTION OF MOVEMENT THEREOF, THE DENSITY AND PARTICLE SIZE OF SAID ADDITIONAL PARTICLES BEING SUCH TAHT THE COARSER FURNISH AND CHEMICAL PARTICLES TRAVEL OUTWARDLY PROGRESSIVELY, ACCORDING TO PARTICLE SIZE AND DENSITY, TO DEPOSIT ON THE INNER COURSE OF THE PREVIOUSLY-BLOWN PARTICLES AND THE FINER FURNISH PARTICLES TRAVEL OUTWARDLY THE FARTHEST TO FORM AN UPPER OUTER COURSE, SUBJECTING THE MATERIAL TO HEAT AND PRESSURE TO CONSOLIDATE ALL OF SAID PARTICLES INTO A BOARD, AND SANDING OFF PARTICLES OF THE OUTER COURSES TO EXPOSE THE PARTICLES OF SAID INNER COURSES AT FACES OF THE BOARD.