Magnetic barrel tumbler

Details Magnetic barrel tumbler Magnetic barrel tumbler

1995-09-27

1997-09-02

Smith, James G.

Abrading

Machine

Immersion

451 32, 451 35, 451104, 451326, B24B 1900

Patent

active

056625162

ABSTRACT:
A magnetic barrel tumbler for polishing precious metal articles, including a motor case adapted to firmly support a motor therein, an outer housing mounted to an upper portion of the motor case, a magnetic disc placed in a space defined by both the outer housing and the motor case, the magnetic disc including a disc plate coupled to a shaft of the motor, and a plurality of magnets attached to an upper surface of the disc plate, the magnets being arranged in a fashion that those having opposite polarities face each other diametrically so that variations in magnetic field are induced during a rotation of the disc plate, a fixed plate spaced from an upper surface of the magnetic disc and fixedly mounted at an outer edge thereof to an inner surface of the outer housing, the fixed plate being made of a nonmetallic material, a polishing barrel laid on the fixed plate, the polishing barrel being provided with a protrusion at the central portion of an inner bottom surface thereof and with a chamber for containing articles to be polished and abrasives, and a lid mounted to an upper end of the polishing barrel and adapted to prevent the content of the polishing barrel from being outwardly discharged and to facilitate a replacement of the content and a washing of the polishing barrel.

REFERENCES:
patent: 2787854 (1957-04-01), Simjian
patent: 2880554 (1959-04-01), Simjian
patent: 3848363 (1974-11-01), Lovness et al.
patent: 4175930 (1979-11-01), Sakulevich et al.
patent: 4211041 (1980-07-01), Sakulevich et al.
patent: 4235051 (1980-11-01), Spekman et al.
patent: 4549370 (1985-10-01), Makedonski et al.
patent: 4599826 (1986-07-01), Podoprigora
patent: 5044128 (1991-09-01), Nakano
patent: 5419735 (1995-05-01), Imahashi et al.
patent: 5449313 (1995-09-01), Kordonsky et al.

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