Method of making field plates for synchronous motors

Claim 2

IN A METHOD OF PRODUCING INNER AND SURROUNDING OUTER FIELD PLATES WITH COMPLEMENTAL OUTER AND INNER POLES, THE STEPS OF SHAPING THE INNER PLATES AND THE POLES OF THE OUTER PLATE BY BLANKING FROM THE OUTER PLATE THE INNER PLATE WITH ITS ANGULARLY SPACED OUTWARD POLE PROJECTIONS AND GAPS THEREBETWEEN AND, BY PUNCHING WASTE MATERIAL FROM THE OUTER PLATE, TRIMMING THE BLANK-CONFORMING APERTURE THEREIN TO THE SHAPE OF THE ANGULARLY SPACED INWARD POLE PROJECTIONS AND GAPS THEREBETWEEN, WITH AT LEAST THE POLE PROJECTIONS OF ONE PLATE BEING LENGTHWISE DIMENSIONED FOR PRESSFIT WITH THEIR END EDGES IN THE GAPS BETWEEN THE POLE PROJECTIONS OF THE OTHER PLATES; AND PRESSING SAID ONE PLATE INTO SAID OTHER PLATE FOR SAID PRESSFIT THEREIN.

Claim 3

IN A METHOD OF PRODUCING INNER AND SURROUNDING OUTER FIELD PLATES HAVING ABOUT A REFERENCE AXIS OF THE INNER PLATE COMPLEMENTAL OUTER AND INNER POLES, RESPECTIVELY, AND A HOLE IN THE INNER PLATE CONCENTRIC WITH SAID AXIS, THE STEPS OF SHAPING THE POLES AND HOLES OF THE INNER PLATE AND THE POLES OF THE OUTER PLATE IN A DIE ON CLOSING THE SAME, BY BLANKING FROM THE OUTER PLATE THE INNER PLATE WITH ITS ANGULARLY SPACED OUTWARD POLE PROJECTIONS AND GAPS THEREBETWEEN AND PUNCHING THE HOLE THEREINTO AND, BY PUNCHING WASTE MATERIAL FROM TH OUTER PLATE, TRIMMING THE BLANK-CONFORMING APERATURE THEREIN TO THE SHAPE OF THE ANGULARLY SPACED INWARD POLE PROJECTIONS AND GAPS THEREBETWEEN, WITHAT LEAST THE POLE PROJECTIONS OF ONE PLATE BEING LENGTHWISE DIMENSIONED FOR PRESSFIT WITH THEIR END EDGES IN THE GAPS BETWEEN THE POLE PROJECTIONS OF THE OTHER PLATE; WHILE STILL IN THE CLOSED DIE REENTERING THE INNER PLATE IN THE TRIMMED APERTURE OF THE OUTER PLATE FOR SAID PRESSFIT OF THE END EDGES OF THE POLE PROJECTIONS OF SAID ONE PLATE IN THE GAPS BETWEEN THE POLE PROJECTIONS IN SAID OTHER PLATE: OPENING THE DIE AND REMOVING THEREFROM THE OUTER PLATE AND REENTERED INNER PLATE; AND TRANSFERRING THE OUTER PLATE AND REENTERED INNER PLATE TO ANOTHER DIE AND ON CLOSING THE LATTER FINISH-FORMING THE POLE PROJECTIONS BY BENDING AT LEAST THE POLE PROJECTIONS OF THE INNER PLATE INTO PARALLELISM WITH SAID REFERENCE AXIS.

Claim 4

IN A METHOD OF PRODUCING INNER AND SURROUNDING OUTER FIELD PLATES HAVING ABOUT A REFERENCE AXIS OF THE INNER PLATE COMPLEMENTAL OUTER AND INNER POLES, RESPECTIVELY, AND A HOLE IN THE INNER PLATE CONCENTRIC WITH SAID AXIS, THE STEPS OF SHAPING THE POLES AND HOLES OF THE INNER PLATE AND THE POLES OF THE OUTER PLATE IN A DIE ON CLOSING THE SAME, BY BLANKING FROM THE OUTER PLATE THE INNER PLATE WITH ITS ANGULARLY SPACED OUTWARD POLE PROJECTIONS AND GAPS THEREBETWEEN AND PUNCHING THE HOLE THEREINTO AND, BY PUNCHING WASTE MATERIAL FROM TH OUTER PLATE, TRIMMING THE BLANK-CONFORMING APERATURE THEREIN TO THE SHAPE OF THE ANGULARLY SPACED INWARD POLE PROJECTIONS AND GAPS THEREBETWEEN, WITHAT LEAST THE POLE PROJECTIONS OF ONE PLATE BEING LENGTHWISE DIMENSIONED FOR PRESSFIT WITH THEIR END EDGES IN THE GAPS BETWEEN THE POLE PROJECTIONS OF THE OTHER PLATE; WHILE STILL IN THE CLOSED DIE REENTERING THE INNER PLATE IN THE TRIMMED APERTURE OF THE OUTER PLATE FOR SAID PRESSFIT OF THE END EDGES OF THE POLE PROJECTIONS OF SAID ONE PLATE IN THE GAPS BETWEEN THE POLE PROJECTIONS IN SAID OTHER PLATE: OPENING THE DIE AND REMOVING THEREFROM THE OUTER PLATE AND REENTERED INNER PLATE; AND TRANSFERRING THE OUTER PLATE AND REENTERED INNER PLATE TO ANOTHER DIE AND ON CLOSING THE LATTER FINISH-FORMING THE POLE PROJECTIONS BY BENDING AT LEAST THE POLE PROJECTIONS OF THE INNER PLATE INTO PARALLELISM WITH SAID REFERENCE AXIS.