Lee,

This is what I found during a search for the answer to your question.

FROM:Belleville Springs Ltd
     Arthur Street, Lakeside
     REDDITCH Worcs B98 8JY
     United Kingdom


Conical shaped disc springs were first conceived in the mid-1800's and the
invention was subsequently called a Belleville Washer after its inventor
Julian Belleville, who received a patent for the product in 1867.

Drew Meyer

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