Metal working – Gem and jewel setting
Patent
1994-08-17
1995-07-18
Echols, P. W.
Metal working
Gem and jewel setting
291606, 63 26, 156252, A44C 1702, B21F 4300
Patent
active
054329884
ABSTRACT:
A method for setting a gem stone in a semi-precious stone, capable of achieving an easy setting and thereby greatly reducing the labor and the work time. The method includes the steps of preparing a gem stone having a girdle and upper and lower tapered surfaces disposed above and beneath the girdle, preparing a semi-precious stone including an upper semi-precious stone piece having a hole provided with an upwardly-tapered contact surface having the same taper angle as the upper tapered surface of the gem stone and a lower semi-precious stone piece having a hole provided with a downwardly-tapered contact surface having the same taper angle as the upper tapered surface of the gem stone, fitting the gem stone in the hole of the lower semi-precious stone piece such that the lower tapered surface thereof is in contact with the contact surface of the lower semi-precious stone piece, and bonding the upper semi-precious stone piece to the lower semi-precious stone piece such that the contact surface of the upper semi-precious stone piece is in contact with the upper tapered surface of the gem stone.
REFERENCES:
patent: 3261072 (1966-07-01), Stanley
patent: 4936115 (1990-06-01), Mesica
Echols P. W.
Kim Pyoung Su
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