Sub-flush commutator

Claim 1

IN A COMMUTATOR HAVING AN AXIS, A PLURALITY OF SPACED COMMUTATOR SEGMENTS ARRANGED IN A CIRCULAR FORMATION ABOUT SAID AXIS AND SPACED RADIALLY OUTWARDLY FROM SAID AXIS, EACH OF SAID SEGMENTS BEING SHAPED SO THAT IT HAS AN INNER EDGE AND AN OUTER EDGE WHICH IS SUBSTANTIALLY PARALLEL TO SAID AXIS, A PROJECTION ON SAID INNER EDGE, A PLURALITY OF INSULATING MEMBERS DISPOSED BETWEEN SAID COMMUTATOR SEGMENTS, EACH OF SAID INSULATLING MEMBERS BEING SHAPED SO THAT IT HAS AN INNER EDGE AND AN OUTER EDGE WHICH OVER A MINOR PORTION OF ITS LENGTH ADJACENT ONE END OF THE MEMBER IS SUBSTANTIALLY FLUSH WITH THE OUTER EDGES OF THE SEGMENTS ON OPPOSITE SIDES THEREOF AND OVER THE REMAINDER AND MAJOR PORTION OF ITS LENGTH IS RECESSED RELATIVE TO SAID PORTION, A PROJECTION ON THE INNER EDGE OF EACH OF SAID INSULATING MEMBERS, AND A ONE-PIECE GENERALLY TUBULAR SHAPE CORE HAVING SAID PROJECTIONS EMBEDDED THEREIN FOR RETAINING SAID SEGMENTS AND MEMBERS IN PREDETERMINED FIXED POSITIONS RELATIVE TO SAID AXIS, SAID CORE BEING FORMED OF A MOLDABLE INSULATING MATERIAL.