Heating – Work chamber having heating means – Having means by which work is progressed or moved mechanically
Patent
1976-12-30
1979-04-17
Makay, Albert J.
Heating
Work chamber having heating means
Having means by which work is progressed or moved mechanically
202103, 414305, F27B 916
Patent
active
041498453
ABSTRACT:
The rabbles of this invention have a concave active face. They are used in a system for processing material including, for example, a substantially circular and horizontal floor, and a rabble system disposed above, but adjacent to, said floor. The rabble system urges material on the floor to desired locations, such as discharge openings, in response to relative motion between the floor and the rabble system. The rabble system includes a plurality of rabbles. Substantially each rabble has a body portion which carries a curved or angled surface. This curved or angled surface defines a concave active face. Each rabble also has a leading edge substantially perpendicular to the floor. The concave active face extends from the leading edge and is both substantially parallel to the leading edge and substantially perpendicular to the floor. Said rabbles are preferably oriented in a system with their body portion adjacent their leading edges at an angle in the range of about 0.degree. to about .+-.13.degree. to the flow of material and with a portion of their concave active faces oriented to intercept and move material in the desired direction. During relative rotary motion between the floor and the rabbles, this orientation and configuration of the rabbles reduces the build-up and bridging of material in front of and between the leading edges of the rabbles while the concave active faces cause substantial amounts of material to flow across the floor. These rabbles and systems are especially useful in the operation of rotary hearths.
REFERENCES:
patent: 637864 (1899-11-01), Godfrey et al.
patent: 741300 (1903-10-01), Braniff
patent: 822547 (1906-06-01), Nicolson
patent: 1878581 (1932-09-01), Halden
patent: 3222141 (1965-12-01), Donaldson
patent: 3612497 (1971-10-01), Allred
patent: 3763013 (1973-10-01), Allred
Herring Joseph C.
Hummel Jack L.
Makay Albert J.
Marathon Oil Company
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