Plural discharge lamp circuit and laminated core transformer therefor and method of making said transformer

Claim 1

A METHOD FOR PRODUCING A SHELL TYPE TRANSFORMER CORE WHICH IS COMPRISED OF INDIVIDUAL LAMINATIONS OF ELECTRICAL STEEL STACKED AND ARRANGED TOGETHER IN A UNITARY CORE STRUCTURE AND IN WHICH THE INDIVIDUAL LAMINATIONS CONSIST ONLY OF ELONGATE T-SHAPED MEMBERS AND ELONGATE SIDE MEMBERS HAVING LATERAL PROJECTIONS PERPENDICULAR THERETO ALONG ONE EDGE THEREOF INCLUDING ONE OF SAID PROJECTIONS AT LEAST AT ONE END OF EACH SIDE MEMBER, SAID T-SHAPED MEMBERS ARE STACKED TO FORM THE CENTRAL WINDING LEG OF THE CORE AND SAID SIDE MEMBERS ARE STACKED AND ARRANGED WITH RESPECT TO THE STACK OF T-SHAPED MEMBERS TO FORM THE SIDE PARTS OF THE CORE, THE LENGTH OF THE SIDE PARTS ARE EQUAL, AND THE SUM OF THE WIDTH OF THE LONG LEG OF THE T-SHAPED LAMINATION AT THE END OPPOSITE THE CROSS-HEAD OF THE T PLUS TWICE THE MAXIMUM LENGTH OF THE SAID END PROJECTION OF THE SIDE LAMINATION IS EQUAL TO THE MAXIMUM LENGTH OF THE CROSS-HEAD OF THE T-SHAPED LAMINATION PLUS TWICE THE WIDTH OF THE SIDE LAMINATION AT THE SECOND END OF EACH SIDE PART, AND THERE ARE TWO OF SAID LATERAL PROJECTIONS INTEGRAL WITH EACH SAID SIDE PART BETWEEN THE ENDS THEREOF, AND SAID T-SHAPED MEMBER HAS ITS ELONGATE PORTION ADJACENT THE CROSS-HEAD SUBSTANTIALLY WIDER THAN THE REMAINDER THEREOF; SAID METHOD COMPRISING STAMPING SAID T-SHAPED AND SIDE PART LAMINATIONS IN A CONTINUOUS PROCESS FROM A STRIP OF ELECTRICAL STEEL MOVING THROUGH A STAMPING MACHINE, ALBEIT IN A PREDETERMINED GEOMETRICAL ARRANGEMENT OF SAID INDIVIDUAL LAMINATIONS ALONG THE DIRECTION OF MOVEMENT OF SAID SHEET WHICH DEFINES GROUPS OF SAID LAMINATIONS, EACH GROUP INCLUDING A PAIR OF SIDE LAMINATIONS AND ONE OF SAID T-SHAPED LAMINATIONS ALL NESTED TOGETHER WITH THE SAID LATERAL PROJECTIONS BETWEEN THE ENDS ENGAGED IN NOTCHES IN THE ELONGATE PORTION OF THE T-SHAPED LAMINATION AND THE LATERAL END PROJECTIONS OF SAID SIDE LAMINATIONS FACING ONE ANOTHER WITH THEIR SHORT DIMENSIONS COMMON WITH THE NARROW END OF THE SAID T-SHAPED LAMINATION, WHEREBY SAID STAMPING RESULTS IN A SUBSTANTIAL REDUCTION IN WASTE, FORMING SAID PROJECTION AT THE SAME TIME OF STAMPING, AND THEREAFTER STACKING AND ASSEMBLING THE SAID LAMINATIONS TO FORM SAID CORE.

Claim 2

A METHOD FOR PRODUCING A SHELL TYPE TRANSFORMER CORE WHICH IS COMPRISED OF INDIVIDUAL LAMINATIONS OF ELECTRICAL STEEL STACKED AND ARRANGED TOGETHER IN A UNITARY CORE STRUCTURE AND IN WHICH THE INDIVIDUAL LAMINATIONS CONSIST ONLY OF ELONGATE T-SHAPED MEMBERS AND ELONGATE SIDE MEMBERS HAVING LATERAL PROJECTIONS PERPENDICULAR THERETO ALONG ONE EDGE THEREOF INCLUDING ONE OF SAID PROJECTIONS AT LEAST AT ONE END OF EACH SIDE MEMBER, SAID T-SHAPED MEMBERS ARE STACKED TO FORM THE CENTRAL WINDING LEG OF THE CORE AND SAID SIDE MEMBERS ARE STACKED AND ARRANGED WITH RESPECT TO THE STACK OF T-SHAPED MEMBERS TO FORM THE SIDE PARTS OF THE CORE, THE LENGTH OF THE SIDE PARTS ARE EQUAL, AND THE SUM OF THE WIDTH OF THE LONG LEG OF THE T-SHAPED LAMINATION AT THE END OPPOSITE THE CROSS-HEAD OF THE T PLUS TWICE THE MAXIMUM LENGTH OF THE SAID END PROJECTION OF THE SIDE LAMINATION IS EQUAL TO THE MAXIMUM LENGTH OF THE CROSS-HEAD OF THE T-SHAPED LAMINATION PLUS TWICE THE WIDTH OF THE SIDE LAMINATION AT THE SECOND END OF EACH SIDE PART, AND THERE ARE TWO OF SAID LATERAL PROJECTIONS INTEGRAL WITH EACH SAID SIDE PART BETWEEN THE ENDS THEREOF, AND SAID T-SHAPED MEMBER HAS ITS ELONGATE PORTION ADJACENT THE CROSS-HEAD SUBSTANTIALLY WIDER THAN THE REMAINDER THEREOF; SAID METHOD COMPRISING STAMPING SAID T-SHAPED AND SIDE PART LAMINATIONS IN A CONTINUOUS PROCESS FROM A STRIP OF ELECTRICAL STEEL MOVING THROUGH A STAMPING MACHINE, ALBEIT IN A PREDETERMINED GEOMETRICAL ARRANGEMENT OF SAID INDIVIDUAL LAMINATIONS ALONG THE DIRECTION OF MOVEMENT OF SAID SHEET WHICH DEFINES GROUPS OF SAID LAMINATIONS, EACH GROUP INCLUDING A PAIR OF SIDE LAMINATIONS AND ONE OF SAID T-SHAPED LAMINATIONS ALL NESTED TOGETHER WITH THE SAID LATERAL PROJECTIONS BETWEEN THE ENDS ENGAGED IN NOTCHES IN THE ELONGATE PORTION OF THE T-SHAPED LAMINATION AND THE LATERAL END PROJECTIONS OF SAID SIDE LAMINATIONS FACING ONE ANOTHER WITH THEIR SHORT DIMENSIONS COMMON WITH THE NARROW END OF THE SAID T-SHAPED LAMINATION, WHEREBY SAID STAMPING RESULTS IN A SUBSTANTIAL REDUCTION IN WASTE, FORMING SAID PROJECTION AT THE SAME TIME OF STAMPING, AND THEREAFTER STACKING AND ASSEMBLING THE SAID LAMINATIONS TO FORM SAID CORE.