Importance

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Abstract

Coil-core assembly for a transformer including a plurality of coils and cores supported in a U-frame. The frame includes a cross member from whose ends legs extend. The cross member and the legs are channels. Near the corners of the frame the flanges of the channels are separated so that the legs are, in effect, hinged about the material remaining at the corners. Before the coils and cores are inserted in the frame, the legs are set at an angle of between 91.degree. and 93.degree. to the cross member so that the coils and cores may be readily positioned in the frame. On each side of each gap, spanning the gap, axially coextensive lugs are welded to the flanges. The coils and cores are disposed on the cross member between the legs. Each pair of lugs spanning a gap is penetrated by a bolt on which a swage nut is threaded and torqued so that the lugs and the boundaries of the gap are drawn towards each other, the legs are positioned substantially perpendicular to the cross member and the coils and cores are held firmly between the legs.

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First Claim