A - Human Necessities – 01 – C
Patent
A - Human Necessities
01
C
111/35
A01C 7/04 (2006.01)
Patent
CA 1264254
SEED METER HAVING SEED DISK APERTURE CLEANING WIPER AND BRUSH ARRANGEMENT Abstract of the Disclosure In a seed meter in which individual seeds from a seed mass within a first chamber on a first side of a seed disk rotatably mounted within a housing are transported by at least one circumferential row of apertures within the seed disk to a separate seed discharge area within the first chamber by the reduced pressure of a vacuum source coupled to a second chamber within the housing and on the opposite side of the seed disk from the first chamber, a brush and wiper arrangement mounted within a third chamber within and sealed from the second chamber and located opposite the seed discharge area bears against the second side of the seed disk to aid in dislodging and expelling debris from the apertures in the seed disk. The brush and wiper arrangement includes at least one circular brush rotatably mounted within the third chamber and a spring arrangement for biasing the circular brush and an adjacent circular band against the second surface of the seed disk at the at least one row of apertures. The brush and wiper arrangement also includes a relatively thin, generally planar wiper blade having a straight edge disposed against the second side of the seed disk and a leaf spring having a first end mounted within the third chamber and an opposite second end mounting the wiper blade thereon, the leaf spring being operative to bias the wiper blade against the second side of the seed disk at the at least one row of apertures. The wiper is useful in dislodging debris within the seed disk apertures, particularly where the apertures are relatively large and are designed for use with large seeds. The circular brush is useful in expelling from the apertures debris which has been loosened by the wiper as well as dislodging and expelling debris from relatively small apertures in seed disks designed for use with small seeds.
476110
Ankum Robert H.
Olson Jay H.
Ankum Robert H.
Borden Ladner Gervais Llp
Deere & Company
Olson Jay H.
LandOfFree
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