Patent
1979-07-05
1981-03-31
Hirsch, Paul J.
130 27S, A01F 1228
Patent
active
042587263
ABSTRACT:
In an axial flow rotary separator for a combine harvester, a series of parallel guide vanes are mounted inside the upper portion of the separator housing. The guide vanes are each helically disposed and parallel to each other and they cooperate with the separator rotor so that as the rotor is rotated crop material which has been fed to an upstream end of the separator is propelled downstream as a mat in the annular space between rotor and housing, the guide vanes engaging the mat of material and deflecting it downstream as it is propelled circumferentially by the rotor so that any given portion of the mat is propelled downstream in an approximately helical path. The guide vanes are characterized in that they have a first fixed or leading portion which first engages the crop material and a second trailing portion which is adjustable with respect to the first and with respect to the separator housing so that the effectiveness of the guide vane as a whole may be selectively varied with regard to its helically propelling or deflecting effect. Several embodiments are disclosed including a guide vane fixedly pivoted at its leading end and with its trailing end radially adjustable inwards and outwards; a version in which a trailing portion of the guide vane is adjustably pivotable about an approximately radially extending pivot axis; a version in which the length of the trailing portion is adjustable through a telescoping arrangement and another in which a rotatable or displaceable element effectively provides three interchangeable housing wall portions, each wall portion carrying a guide vane trailing portion of a different pitch.
REFERENCES:
patent: 33109 (1861-08-01), Standish
patent: 509490 (1893-11-01), Richter
patent: 689828 (1901-12-01), McIntire
patent: 885620 (1908-04-01), Huff
patent: 990007 (1911-04-01), Reason
patent: 2053148 (1936-09-01), James
patent: 3156245 (1964-11-01), Hobbs
patent: 3828793 (1974-08-01), Gochanour
patent: 3949761 (1976-04-01), Mortier et al.
"Handbook for Axial-Flow Combines", International Harvester Co., Chicago, Illinois, Apr. 1978, p. 68.
Buhler Kurt K.
Glaser Fritz
Gortz Christoph
Klimmer Josef W.
Laberheim Rene
Deere & Company
Hirsch Paul J.
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