Classifying – separating – and assorting solids – Plural – diverse separating operations – Gaseous suspension and sifting
Patent
1979-06-29
1981-02-10
Hill, Ralph J.
Classifying, separating, and assorting solids
Plural, diverse separating operations
Gaseous suspension and sifting
209 3, 209237, 209250, 209144, 73432PS, 73 28, 73159, 55270, B07B 706, B07B 902
Patent
active
042496551
ABSTRACT:
An apparatus for removing dust from a fiber sample for subsequent analysis is disclosed. A first upper cylindrical chamber containing a fiber sample has a tangential air jet and a radial air jet installed to swirl and tumble the fiber sample in a cyclonic fashion, thus liberating the dust from the sample when either a positive or a negative pressure is applied through the air jets. The liberated dust particles are then screened out through a 100 mesh screen filter and exhausted through a funnel. The device can be equipped with a second stage chamber containing a plurality of step-stage filters and a third stage plurality of microfilters to selectively screen the dust particles. A blow bottle containing an aqueous medium to absorb even the finest dust particles or gas can also be added as a fourth stage.
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patent: 3543931 (1970-12-01), Rastatter
patent: 3620370 (1971-11-01), Swayze
patent: 3756400 (1973-09-01), Kammori et al.
patent: 3918585 (1975-11-01), Hagelstam
patent: 4046593 (1977-09-01), Au et al.
patent: 4154111 (1979-05-01), Anderson et al.
patent: 4155247 (1979-05-01), Kaczmarek et al.
Murray Michael F.
Patureau Myles A.
Hill Ralph J.
McConnell David G.
Silverstein M. Howard
The United States of America as represented by the Secretary of
Von Bodungen Raymond C.
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