High-speed indexing feed screw conveyer

Details High-speed indexing feed screw conveyer High-speed indexing feed screw conveyer

1984-02-13

1985-07-02

Beck, Shrive P.

Coating apparatus

Projection or spray type

Plural projectors

118313, 118317, 118318, 118320, 118503, 118DIG3, 198625, B05B 706, B05C 500

Patent

active

045261288

ABSTRACT:
A vertical-feed conveyor for cylindrical objects and the like utilized twin counter-rotating helical feed screws. The thread of the feed screws is shaped so as to create conveyance troughs which are closely dimensioned to the object to be moved. The variable pitch of the screws creates zones of acceleration, deceleration and dwell so that the objects may be sequentially delivered to predetermined indexing stations where various processes may be performed upon the objects such as; internal spray coating, capping, electronic non-destructive testing, etc. The points of dwell along the feed screws are achieved by the shape of the radial sidewalls of the feed screws which at those points extend part way around the screw in radial planes of the screw.

REFERENCES:
patent: 2175255 (1939-10-01), Chapman
patent: 2259748 (1941-10-01), Hullhorst
patent: 2756864 (1956-07-01), Laxo
patent: 2961094 (1960-11-01), Bentley
patent: 3012650 (1961-12-01), Carter
patent: 3507382 (1970-04-01), Wells
patent: 3791508 (1974-02-01), Osbourne et al.
patent: 4068450 (1978-01-01), Easter
patent: 4263338 (1981-04-01), Rentmeester et al.

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