Air cutoff pad for an air planter

Details Air cutoff pad for an air planter Air cutoff pad for an air planter

1976-11-18

1978-05-30

Tollberg, Stanley H.

Article dispensing

With discharge assistant

Having movable segregating chamber

221278, A01C 704

Patent

active

040919641

ABSTRACT:
A vertical rotating disc has perforated seed pockets which pick up individual kernels of seed from an air pressurized cavity of a planter housing. Air flowing through the perforated pockets creates a pressure differential which moves a kernel into each pocket as the pocket moves on an arcuate path upwardly through the cavity. The pocket then moves into axially confronting relation with a flat sealing surface of a resilient air cutoff pad which sealingly engages the seed disc to prevent escape of air and holds the seed in the pocket as the disc rotates further to bring the pocket to the lower part of the housing where the seed falls by gravity into the soil. The air cutoff pad is arcuate in shape and is held in place by a pair of screws. Thin sheets of plastic material are bonded to the front and back sides of the pad and stiffening material, such as plastic cement, is added to the radially outer edge of the pad. The added material stiffens the pad so that it substantially retains its shape during planting whereby the lodging of the seed in the seam between the radially outer edge of the pad and the housing is minimized or eliminated.

REFERENCES:
patent: 2808181 (1957-10-01), Oehler et al.
patent: 3251511 (1966-05-01), Lloyd
patent: 3888387 (1975-06-01), Deckler
patent: 4047638 (1977-09-01), Harrer et al.

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