Patent ID: 6824459
Filing Date: 2004-11-30
Classification: B24B

Abstract:
A gold jewelry lapping machine operable with a lap wheel for lapping gold jewelry and adapted to collect gold dust produced from said jewelry by said lapping machine, comprising:(a) a base, (b) an electric motor mounted to said base, said electric motor having a rotatable output shaft extending upward and adapted to be coupled to said lap wheel which is situated above said electric motor and rotates about the axis of said output shaft, with a gold dust debris space defined as the area surrounding said lap wheel and extending from below said lap wheel downward and surrounding at least part of said output shaft, (c) a shroud comprising rear and opposite side parts that surround the rear and opposite sides of said gold dust debris space respectively, thus leaving the front of said gold dust debris space open and accessible, said shroud comprising a continuous front wall and a continuous rear wall spaced radially outward of said front wall, with air flow passages defined between said front and rear walls of said rear and side parts, said front walls of said side and rear parts of said shroud having a plurality of apertures which comprise a majority of the surface area thereof, (d) a first air exhaust port in said rear wall of said rear part of said shroud at an elevation below the bottom of said lap wheel, said air flow passages in said side parts of said shroud communicating with said air flow passage in said rear part and with said first air exhaust port, and (e) exhaust air suction means communicating with said first air exhaust port for drawing air and gold dust from said gold dust debris area.