Method of producing chain links for fine jewelry rope chains
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United States of America Patent
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Aug 13, 1996
Issued Date -
N/A
app pub date -
Oct 24, 1995
filing date -
Jun 1, 1994
priority date (Note) -
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Abstract
A commercially viable process for producing chain links suitable for use in making fine jewelry rope chains, said chain links having gaps for intertwining one link within another, comprising the steps of providing a sheet of precious metal of an appropriate thickness determined by the thickness of the link to be produced; piercing said sheet with a single punch from a mating punch and die set having the predetermined shape of the link to produce a finished link with a gap in the range of 0.2-0.7 mm which link is separated from said sheet; and recovering the link.
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