Electromagnetic core construction

Claim 1

AN ELECTROMAGNETIC CORE CONSTRUCTION OF THE SHELL TYPE COMPRISING AN INTEGRAL SUBSTANTIALLY RECTANGULAR OUTER SHELL HAVING ELONGATE SIDES AND CONTINUOUS BRIDGING END PARTS CONNECTING SAID SIDES, A CENTRAL WINDING LEG INSTALLED ON THE INTERIOR OF THE SHELL EXTENDING THE LENGTH OF SAID INTERIOR AND HAVING EACH END FACE THEREOF DISPOSED IN INTIMATE ENGAGEMENT WITH A SAID END PART, SAID ELONGATE SIDES AND WINDING LEG HAVING EXTENSIONS THEREOF ON OPPOSITE SIDES OF THE WINDING LEG AND ALIGNED TO PROVIDE AIR GAPS OF PREDETERMINED DIMENSION BETWEEN END FACES OF ALIGNED EXTENSIONS, SAID SHELL AND WINDING LEG EACH COMPRISING A STACKED ASSEMBLY OF INDIVIDUAL ELECTRICAL STEEL STAMPINGS OF WHICH EACH WINDING LEG STAMPING HAS BEEN STAMPED FROM A SAID SHELL STAMPING, AND MEANS FOR SIMULTANEOUSLY PREVENTING CHANGE IN THE PREDETERMINED DIMENSION OF THE AIR GAPS AND PREVENTING THE DISTORTION OF SAID ELONGATE SIDES NOTWITHSTANDING INHERENT DISCREPANCIES IN THE DIMENSIONS OF INDIVIDUAL WINDING LEG AND SHELL STAMPINGS CAPABLE OF CAUSING SUCH CHANGE AND DISTORTION WHEN THE STAMPINGS ARE STACKED AND ASSEMBLED TO FORM SAID CORE, SAID MEANS BEING PROVIDED ON ONE OF SAID ELONGATE LEG AND SHELL COMPONENTS ADVANTAGEOUSLY LOCATED TO ABSORB FORCES EXERTED DURING SAID ASSEMBLY CAPABLE OF CAUSING SUCH CHANGE AND DISTORTION.