METER MAGNET WITH STRIP-WOUND CURRENT COIL

The coils for a meter current magnet are each formed from a strip of copper, with insulative coating, wound upon itself. A lead-in from its inner end is formed by the strip itself which is extended out around the coil. Flat bends (within the plane of the portion of bent strip) are made possible by forming the blank for the coil with parallel slots in the area to be thus bent. A tie for the outer layer comprises a tongue on the next layer extending through a slot in the outer layer, insulated from it by a plastic sleeve. The wound coils are insulatively coated and insulated from the magnet core and protected from its edges by molded nylon isolators of split-sleeve nature which, in final positioning, are interlocked with the coils for mutual positioning. The coil is outstandingly economical of copper without overheating.