Apparatus for making a transformer core comprising amorphous metal strips surrounding the core window

Apparatus for making a transformer core from strips of amorphous metal comprising:

• (a) means providing a first plurality of amorphous metal strips disposed in superposed and in near-aligned relationship to form a first group of amorphous metal strips, said first group having first and second spaced-apart transversely-extending edges,
• (b) means providing a second plurality of amorphous metal strips disposed in superposed and in near-aligned relationship to form a second group of amorphous metal strips, said second group having first and second spaced-apart transversely-extending edges,
• (c) means for disposing said second group upon said first group to form a first packet of amorphous metal strips wherein the transversely-extending edges of said second group are longitudinally offset from the transversely-extending edges of said first groups,
• (d) an arbor having a longitudinal axis and an external surface surrounding said axis, and
• (e) means for wrapping said first packet into a wrapped position about said external surface of said arbor, and in which:
• (f) the means of paragraphs (a) (b) and (c) is effective to provide additional packets and to pre-form each additional packet in essentially the same manner as such first packet, each additional packet comprising longitudinally-offset groups of amorphous metal strips, the strips in each group being stacked in near-alignment, and
• (g) the wrapping means of paragraph (e) is effective to wrap sequentially said additional pre-formed packets about said first packet and said arbor.

Apparatus for making a transformer core from strips of amorphous metal comprising:

• (a) means providing a first plurality of amorphous metal strips disposed in superposed and in near-aligned relationship to form a first group of amorphous metal strips, said first group having first and second spaced-apart transversely-extending edges,
• (b) means providing a second plurality of amorphous metal strips disposed in superposed and in near-aligned relationship to form a second group of amorphous metal strips, said second group having first and second spaced-apart transversely-extending edges,
• (c) means for disposing said second group upon said first group to form a first packet of amorphous metal strips wherein the transversely-extending edges of said second group are longitudinally offset from the transversely-extending edges of said first group,
• (d) an arbor having a longitudinal axis and an external surface surrounding said axis, and
• (e) means for wrapping said first packet into a wrapped position about said external surface of said arbor,
• (f) means providing a third plurality of amorphous metal strips disposed in superposed and in near-aligned relationship to form a third group of amorphous metal strips, said third group having first and second spaced-apart transversely-extending edges,
• (g) means providing a fourth plurality of amorphous metal strips disposed in superposed and in near-aligned relationship to form a fourth group of amorphous metal strips, said fourth group having first and second spaced-apart, transversely-extending edges,
• (h) means disposing said fourth group upon said third group to form a second packet wherein the transversely-extending edges of the said fourth group are longitudinally offset from the transversely-extending edges of said third group, and
• (i) means wrapping said second packet about said first packet and said external surface of said arbor.

Apparatus for making a transformer core from strips of amorphous metal prior to assembly of the core with coil structure;

• comprising:
• (a) an arbor having a longitudinal axis and an external surface surrounding the axis,
• (b) means for providing a plurality of packets each comprising a plurality of longitudinally-staggered groups of amorphous metal strips, each group comprising a plurality of elongated amorphous metal strips having substantially-aligned, longitudinally-extending edges and nearly-aligned transversely-extending edges at opposite ends of the group, and (c) means for sequentially wrapping said packets in superposed relationship about said arbor, and
• (d) means for holding said arbor against rotation during said wrapping step.