Unearthing plants or buried objects – Separation or orientation by fluid current or suspension
Patent
1979-07-16
1980-11-25
Hafer, Robert A.
Unearthing plants or buried objects
Separation or orientation by fluid current or suspension
56 128, 56 165, 406100, A01D 3302
Patent
active
042352932
ABSTRACT:
A fan housing comprising two side plates and a scroll, angle elongated scraper members secured transversely between the side plates, the scroll resting on the scraper members and being slideably mounted on the side plates, and a reciprocating actuator secured to the scroll such that upon operation of the actuator, the scroll is oscillated across the scraper members so dislodging deposit from the inside of the scroll.
REFERENCES:
patent: 2373426 (1945-04-01), Spafford
patent: 2829925 (1958-04-01), Monteil
patent: 3227776 (1966-01-01), Leighton et al.
patent: 3316025 (1967-04-01), Sullivan et al.
patent: 4174001 (1979-11-01), Ellis
Field Lawrence I.
Hafer Robert A.
Thomas Equipment Ltd.
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