Anti-skid tire treads and rubber stock therefor

Claim 1

A RUBBER TIRE HAVING A HOMOGENEOUS VULCANIZED TIRE TREAD INCLUDING AS A BASE PORTON A MAJOR PROPORTON OF RUBBER AND A SUFFICIENT AMOUNT OF A REINFORCING AGENT TO PROVIDE A TREAD HAVING A HIGH ABRASIVE RSISTANCE, SAID TREAD ALSO INCLUDING IN ADDITION TO THE BASE PORTION A MIXTURE OF A NONADHESIVE PROTEINAND A CARBOHYDRATE, SAID MIXTURE OF PROTEIN AND CARBOHYDRATE BEING PRESENT IN AN AMOUNT RANGING FROM MORE THAN INCIDENTIAL IMPURITIES UP TO 20% BY WEIGHT OF THE BASE PORTION OF THE TREAD AND SAID MIXTURE OF CARBOHYDRATE AND PROTEIN BEING SUBSTANTIALLY INSOLUBLE IN COLD WATER AND BEING OF A PARTICLE SIZE WHICH IS APPROXIMATELY FINE ENOUGH TO PASS THROUGH A 300 MESH SCREEN AND BEING HOMOGENEOUSLY DISTRIBUTED THROUGHOUT THE BASE PORTION OF THE TIRE TREAD, AND AN INORGANIC SALT THAT IS CAPABLE OF HOLDING THE MIXTURE OF CARBOHYDRATE AND PROTEIN IN COLLOIDAL SUSPENSION IN WATER, SAID INORGANIC SALT BEING PRESENT IN A SUFFICIENTLY FINELY DIVIDED STATE TO FORM A HOMOGENEOUS MIXTURE WITH THE BASE PORTION OF THE TREAD AND BEING PRESENT IN AN EFFECTIVE AMOUNT RANGING FROM MORE THAN INCIDENTAL IMPURITIES UP TO 20% BY WEIGHT OF THE BASE PORTION OF THE TREAD AND IN AN AMOUNT SUFFICIENT TO HOLD THE MIXTURE OF CARBOHYDRATE AND PROTEIN IN COLLOIDAL SUSPENSION IN A FILM OF WATER WHICH FORMS AROUND THE TREAD WHEN THE TREAD ROTATABLY ENGAGES A WET OR ICY ROAD AND SMALL PARTICLES OF THE BASE PORTION OF THE TREAD AND SMALL PARTICLES OF THE CARBOHYDRATE, PROTEIN, AND INORGANIC SALT ARE WORN FROM THE TREAD.