Metal working – Gem and jewel setting
Patent
1992-11-27
1993-12-21
Echols, P. W.
Metal working
Gem and jewel setting
291606, B23P 500
Patent
active
052711323
ABSTRACT:
An automatic stone setting machine includes a vibratory parts feeder which orients the stones in the correct position for pick-up and a pick-up quill which is capable of sensing the position of the stone on the end of the quill. The vibratory parts feeder includes an escapement having a v-shaped track, an aperture at the end of the track and a cover plate mounted over the track. The track and cover plate cooperate to create a passageway which only allows correctly oriented stones to pass through to the pick-up point. The pick-up end of the pick-up quill has an inwardly tapered side portion, a flat seat at the inner end of the tapered side portion and four circumferentially spaced vacuum ports located in the tapered side portion. The flat seat receives the top of the stone and the tapered side portion receives the angled side faces of the stone which block the vacuum ports. A vacuum sensor is provided to sense the level of vacuum applied through the vacuum ports. When all the vacuum ports are blocked by the angled side faces of the stone, the sensor produces a signal indicating the stone is correctly positioned on the end of the quill for mounting in the setting.
REFERENCES:
patent: 562292 (1896-06-01), Field
patent: 1135576 (1915-04-01), Grabau
patent: 2070737 (1937-02-01), Kahan
patent: 2667686 (1954-02-01), Richardson
Braman David P.
Pepper James T.
Wardle James J.
Crafford Precision Products Co.
Echols P. W.
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