Method for producing hollow jewelry ring

Details Method for producing hollow jewelry ring Method for producing hollow jewelry ring

1998-08-26

2000-03-07

Pyon, Harold

Metal founding

Process

Shaping a forming surface

164 45, B22C 904, B22C 702

Patent

active

060327197

ABSTRACT:
A process for fabricating a hollow or partially hollow article, such as a jewelry ring, comprises producing a first mold having an inner cavity shaped in accordance with the external shape of the article to be produced. A second mold is produced for forming a wax core insert which is inserted in the first mold cavity for forming the hollow region of the article. The second mold has an inner cavity formed in the shape of, but slightly smaller than, the external shape of the article. The cavity of the second mold has holes which form spacer pins on the wax core insert. The wax core insert is then placed in the cavity of the first mold and is maintained in a precise, predetermined position by the spacer pins. During waxing of the article, a plastiwax is introduced into and fills the cavity of the first mold, completely surrounding the wax core insert. The plastiwax hardens and is removed from the first mold cavity with the wax core insert. The wax core insert is then removed from the plastiwax article by suitable water soluble or chemical means to form a hollow plastiwax article which is a replica of the desired metal article. The plastiwax replica is then used to form a mold cavity in an investment material, which is used to cast the hollow metal article.

REFERENCES:
patent: 404956 (1889-06-01), Burdon
patent: 703170 (1902-06-01), Baldt
patent: 840946 (1907-01-01), Levy
patent: 1050370 (1913-01-01), McGlashan et al.
patent: 1285882 (1918-11-01), Zielinski
patent: 1365672 (1921-01-01), Fawcett
patent: 1365702 (1921-01-01), Knadler
patent: 1398706 (1921-11-01), Rust
patent: 2078562 (1937-04-01), Cohen et al.
patent: 2103413 (1937-12-01), Gaertner
patent: 3401738 (1968-09-01), Parille
patent: 3511466 (1970-05-01), Kaplan
patent: 3554875 (1971-01-01), MacKinney et al.
patent: 3561521 (1971-02-01), Reneer
patent: 3562900 (1971-02-01), Buehler
patent: 3838728 (1974-10-01), Voegele
patent: 3991809 (1976-11-01), Voegele
patent: 4392289 (1983-07-01), Michaud
patent: 4530740 (1985-07-01), Wolf et al.
patent: 4630346 (1986-12-01), Singer
patent: 4681664 (1987-07-01), Eberle et al.
patent: 4710276 (1987-12-01), Kull
patent: 4722770 (1988-02-01), Blottiere et al.
patent: 4761206 (1988-08-01), Forrest
patent: 4811778 (1989-03-01), Allen et al.
patent: 5172568 (1992-12-01), Senanayake
patent: 5393405 (1995-02-01), Iacono et al.
patent: 5606873 (1997-03-01), Zeller et al.
patent: 5690477 (1997-11-01), Haimoff
patent: 5718278 (1998-02-01), Baum

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