Method of making storage battery electrodes

Claim 1

A METHOD FOR MAKING A POROUS, GLASS RETAINING TUBE FOR STORAGE BATTERY ELECTRODES WHICH COMPRISES IMPREGNATING A BRAIDED GLASS TUBE WITH A CONCENTRATED PHENOL FORMALDEHYDE RESIN SOLUTION CONTAINING AT LEAST ABOUT 40% BY WEIGHT OF RESIN SOLIDS, PASSING SAID IMPREGNATED GLASS TUBING THROUGH A PAIR OF PRESSURE ROLLERS HAVING A FORCE OF AT LEAST ABOUT 15 LBS. APPLIED THERTO TO SQUEEZE THE EXCESS RESIN SOLUTION FROM THE TUBING AND TO WORK THE PHENOLIC RESIN INTO THE FILAMENTS COMPRISING THE GLASS THREADS, PASSING SAID IMPREGNATED GLASS TUBING ONTO A FORMING MANDREL TO SHAPE IT TO THE CONTOUR OF THE MANDREL, PARTIALLY HEAT CURING THE PHENOLIC RESIN WHILE THE TUBING IS ONE THE MANDREL TO GIVE IT SUFFICIENT RIGIDITY TO RETAIN ITS SHAPE, REMOVING THE PARTIALLY CURED GLASS TUBING FROM THE MANDREL AND CUTTING THE DESIRED ELECTRODE RETAINING TUBE LENGTHS THEREFROM, IMMERSING THE GLASS TUBE IN A DILUTE PHENOLIC RESIN SOLUTION CONTANING FROM AOUT 10 TO ABOUT 15% BY WEIGHT OF RESIN SOLIDS FOR AT LEAST 5 SECONDS, ALLOWING THE EXCESS RESIN SOLUTION TO DRAIN FROM THE TUBE, PARTIALLY HEAT CURING THE RESIN COATED TUBE FOR ABOUT 1/3 TO 1/2 THE TOTAL TIME REQUIRED FOR A COMPLETE CURE, REMOVE THE PARTIALLY CURED GLASS TUBE FROM THE OVEN AND REIMMERSE THE TUBE IN A DILUTE PHENOLIC RESIN SOLUTION CONTAINING FROM ABOUT 10 TO ABOUT 15% BY WEIGHT OF RESIN SOLIDS FOR AT LEAST ABOUT 5 SECONDS, ALLOWING THE EXCESS RESIN SOLUTION TO DRAIN FROM THE TUBE AND FINALLY COMPLETELY HEAT CURE THE THRICE IMPREGNATED GLASS TUBE.

Claim 2

A METHOD FOR MAKING A POROUS, GLASS RETAINING TUBE FOR STORAGE BATTERY ELECTRODES WHICH COMPRISES IMPREGNATING A BRAIDED GLASS TUBE WITH A CONCENTRATED PHENOL FORMALDEHYDE RESIN SOLUTION CONTAINING AT LEAST ABOUT 40% BY WEIGHT OF RESIN SOLIDS, PASSING SAID IMPREGNATED GLASS TUBING THROUGH A PAIR OF PRESSURE ROLLERS HAVING A FORCE OF AT LEAST ABOUT 15 LBS. APPLIED THERTO TO SQUEEZE THE EXCESS RESIN SOLUTION FROM THE TUBING AND TO WORK THE PHENOLIC RESIN INTO THE FILAMENTS COMPRISING THE GLASS THREADS, PASSING SAID IMPREGNATED GLASS TUBING ONTO A FORMING MANDREL TO SHAPE IT TO THE CONTOUR OF THE MANDREL, PARTIALLY HEAT CURING THE PHENOLIC RESIN WHILE THE TUBING IS ONE THE MANDREL TO GIVE IT SUFFICIENT RIGIDITY TO RETAIN ITS SHAPE, REMOVING THE PARTIALLY CURED GLASS TUBING FROM THE MANDREL AND CUTTING THE DESIRED ELECTRODE RETAINING TUBE LENGTHS THEREFROM, IMMERSING THE GLASS TUBE IN A DILUTE PHENOLIC RESIN SOLUTION CONTANING FROM AOUT 10 TO ABOUT 15% BY WEIGHT OF RESIN SOLIDS FOR AT LEAST 5 SECONDS, ALLOWING THE EXCESS RESIN SOLUTION TO DRAIN FROM THE TUBE, PARTIALLY HEAT CURING THE RESIN COATED TUBE FOR ABOUT 1/3 TO 1/2 THE TOTAL TIME REQUIRED FOR A COMPLETE CURE, REMOVE THE PARTIALLY CURED GLASS TUBE FROM THE OVEN AND REIMMERSE THE TUBE IN A DILUTE PHENOLIC RESIN SOLUTION CONTAINING FROM ABOUT 10 TO ABOUT 15% BY WEIGHT OF RESIN SOLIDS FOR AT LEAST ABOUT 5 SECONDS, ALLOWING THE EXCESS RESIN SOLUTION TO DRAIN FROM THE TUBE AND FINALLY COMPLETELY HEAT CURE THE THRICE IMPREGNATED GLASS TUBE.