Battery boxes

Claim 1

A PROCESS FOR INCREASING THE RESISTANCE TO ACID ATTACK AND PENETRATION OF A MOLDED ARTICLE OF COMPOSITION INCLUDING ASPHALT AS A BINDER, FILLER MATERIAL INCLUDING ACID-RESISTANT MINERAL MATTER AND SUBSTANTIALLY 10% TO 15% BY WEIGHT OF THE COMPOSITION OF ORGANIC FIBER OF ACID ATTACKABLE NATURE, WHICH COMPRISES FIRST SPRAYING THE ORGANIC FIBER WITH A MIXTURE OF WATER AND OF FROM SUBSTANTIALLY 15% TO 40% BY WEIGHT OF THE ORGANIC FIBER PRESENT OF RESIN-FORMING MATERIAL SELECTED FROM THE CLASS CONSISTING OF POLYMERIZED FURFURYL ALCOHOL, PHENOL FURFURAL AND PHENOL FORMALDEHYDE, AND A SECOND CLASS CONSISTING OF CRESOLFORMALDEHYDE AND XYLENOL-FORMALDEHYDE, THE SECOND CLASS PROVIDING APPROXIMATELY 50% TO 75% OF THE TOTAL RESIN-FORMING MATERIAL, SAID RESIN FORMING MATERIAL BEING PRE-POLYMERIZED TO A VISCOSITY OF APPROXIMATELY 80 TO 200 CENTIPOISES AT 77* F. AND INCLUDING A CATALYST FOR POLYMERIZATION OF SAID MATERIAL INTO A RESIN WHICH IS HIGHLY RESISTANT TO STORAGE BATTERY ACID AT NORMAL TEMPERATURE OF STORAGE BATTERY USE WHEREBY ACID PENETRATION IN SAID ARTICLE WILL BE RESISTED BY REASON OF THE FORMATION OF SITU IN THE ORGANIC FIBER OF AN ACID BARRIER THEREIN DUE TO THE CATALYZING ACTION OF THE CATALYST ON THE RESIN-FORMING MATERIAL, MIXING THE SPRAYED FIBER TO WET THE SAME UNIFORMLY, ADDING THE BINDER AND THE MINERAL FILLER TO THE IMPREGNATED ORGANIC FIBER TO COMPLETE THE COMPOSITION, THEN HEATING THE SO-FORMED COMPOSITION TO A TEMPERATURE AND FOR A TIME SUFFICIENT TO COMPLETE SUBSTANTIALLY POLYMERIZATION OF THE RESINFORMING MATERIAL INTO A RESIN WHICH IS SUBSTANTIALLY IMPREVIOUS TO ATTACK BY STORAGE BATTERY ACID AT A TEMPERATURE OF NORMAL USE OF A STORAGE BATTERY, AND THEN MOLDING AN ARTICLE FROM THE COMPOSITION.