Electric cells with spiral wound electrodes

Claim 1

A PROCESS OF MANUFACTURING ELECTRIC CELLS OF THE TYPE UTILIZING THIN SINTERED ELECTRODES WOUND INTO SPIRAL FORM WITH AN INTERPOSED SEPARATOR BETWEEN ADJACENT ELECTRODES TO PREVENT DAMAGE TO THE SEPARATOR AND SHORT CIRCUITS BETWEEN ELECTORDES BY LOOSENED AND PIERCING PARTICLES OF THE SINTERED MATERIAL OF THE ELECTRODES LOCATED AT ENDS AND AT DEFORMATIONS IN THE ELECTRODES, COMPRISING THE STEPS OF PROVIDING A WINDING MANDREL, APPLYING A PROTECTIVE ADHESIVE COVERING SHEET AROUND AN END OF ONE OF THE ELECTRODE SO THAT IT EXTENDS ALONG AT LEAST ONE FACE OF THE LATTER FOR A LIMITED PART OF ITS LENGTH ADJACENT SAID LAST-NAMED END, INSERTING SAID LAST-NAMED END INTO SAID WINDING MANDREL SO THAT THE PROTECTIVE ADHESIVE COVERING SHEET EXTENDS OUTWARDLY OF THE MANDREL AND OVERLIES A PORTION OF SAID LAST-NAMED ELECTRODE THAT BECOMES DEFORMED IN THE REGION ADJACENT SAID MANDREL WHEN SAID LAST-NAMED ELECTRODE IS WOUND UP ON SAID MANDREL AND TENDS TO PREVENT CRACKING OFF OF PARTICLES OF THE SINTERED MATERIAL AT SAID REGION WHICH IS LIKELY TO CAUSE DAMAGE TO THE SEPARATOR, THEN PARTIALLY WINDING UP THE LAST-NAMED ELECTRODE ON THE MANDREL, THEN APPLYING A SEPARATOR AND A SECOND ELECTRODE TO SAID FIRSTNAMED ELECTRODE AND COMPLETING THE WINDING UP OF THE ELECTRODES AND SEPARATOR INTO SPIRAL FORM ON SAID MANDREL, AND THEREAFTER REMOVING THEM THEREFROM, THE SEPARATOR THEN BEING PROTECTED FROM DAMAGE BY SAID PARTICLES BY SAID PROTECTIVE COVERING SHEET IN SAID REGION.