Importance

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Abstract

A pancake-type transformer particularly suited for connection to an inductor for inductively heating crankshafts is comprised of a single turn secondary defined by a plurality of generally U-shaped tubular conductors interleaved between the turns of a tubular, multiturn primary conductor having opposite ends connectable across a source of power. The conductors of the secondary have opposite ends each interconnected with a corresponding one of a pair of terminal blocks connected to a tubular inductor. The terminal blocks are outwardly adjacent the primary and secondary conductor portions at one end of the transformer and include corresponding current collectors which extend inwardly across the opposite sides of the conductor portions at the one end of the transformer. Coolant for flow through the secondary conductors is communicated with the opposite ends thereof through coolant passageways in the current collectors. Coolant for circulation through the tubular inductor is communicated with the latter through flow passageways in the terminals and one of the current collectors. A tap changing arrangement at the opposite end of the transformer comprises contact buttons on the primary conductor and a pivotal and linearly displaceable link mounted on one of a pair of busses by which the transformer is energized.

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First Claim