Production of groundwood pulp from hardwood

Claim 1

THE METHOD OF PRODUCING GROUNDWOOD PULP FROM HARDWOOD, WHICH COMPRISES CONFINING IN A DIGESTER HARDWOOD BLOCKS NOT SUBSTANTIALLY SHORTER THAN TWO FEET NOR LONGER THAN A SMALL MULTIPLE OF THE LENGTH, EVACUATING AIR THEREFROM, FILLING THE DIGESTER WITHOUT BREAKING THE VACUUM WITH A CHEMICAL DIGESTING LIQUOR ADAPTED TO SOFTEN THE BINDING MATERIAL BETWEEN THE WOOD FIBERS WIHTOUT SUBSTANTIAL REMOVAL OF SAID BINDING MATERIAL HEATING THE LIQUID AND BLOCKS TO A DIGESTION TEMPERATURE SUBSTANTIALLY ABOVE THE BOILING POINT OF THE LIQUIR AT A PRESSURE OF ONE ATMOSPHERE, SUNJECTING THE LIQUID AND BLOCKS IN THE DIGESTER TO AN HYDRAULIC PRESSURE SUCH THAT THE TOTAL PRESSURE IS GREATLY IN EXCESS OF THE STEAM PRESSURE CORRESPONGING TO SAID DIGESTION TEMPERATURE WHILE MAINTAINING SAID DIGETION TEMPERATURE, RELATIVING THE PRESSURE IN THE DIGESTER, REMOVING THE BLOCK THEREFROM, AND SUBJECTING THE BLOCKS TO A GRINING OPERATION.

Claim 2

THE METHOD OF PRODUCING GROUNDWOOD PULP FROM HARDWOOD, WHICH COMPRISES CONFINING IN A DIGESTER HARDWOOD BLOCKS NOT SUBSTANTIALLY SHORTER THAN TWO FEET NOR LONGER THAN A SMALL MULTIPLE OF THE LENGTH, EVACUATING AIR THEREFROM, FILLING THE DIGESTER WITHOUT BREAKING THE VACUUM WITH A CHEMICAL DIGESTING LIQUOR ADAPTED TO SOFTEN THE BINDING MATERIAL BETWEEN THE WOOD FIBERS WIHTOUT SUBSTANTIAL REMOVAL OF SAID BINDING MATERIAL HEATING THE LIQUID AND BLOCKS TO A DIGESTION TEMPERATURE SUBSTANTIALLY ABOVE THE BOILING POINT OF THE LIQUIR AT A PRESSURE OF ONE ATMOSPHERE, SUNJECTING THE LIQUID AND BLOCKS IN THE DIGESTER TO AN HYDRAULIC PRESSURE SUCH THAT THE TOTAL PRESSURE IS GREATLY IN EXCESS OF THE STEAM PRESSURE CORRESPONGING TO SAID DIGESTION TEMPERATURE WHILE MAINTAINING SAID DIGETION TEMPERATURE, RELATIVING THE PRESSURE IN THE DIGESTER, REMOVING THE BLOCK THEREFROM, AND SUBJECTING THE BLOCKS TO A GRINING OPERATION.