Seed dispensing mechanisms

Details Seed dispensing mechanisms Seed dispensing mechanisms

1986-09-11

1987-08-25

Rolla, Joseph J.

Article dispensing

With discharge assistant

Article adhering or gripping type

111 34, 111 77, B65H 308

Patent

active

046886982

ABSTRACT:
A seed dispensing mechanism for a precision row crop planter employs a pressure differential to cause seeds to be held to a series of seed apertures in a rotary disc. The disc is of stainless steel of very thin gauge whereby the disc deforms under the pressure differential to provide a degree of self sealing. The apertures in the disc are formed by chemical etching. A singulator mechanism for removing excess seeds from the apertures comprises singulator members on opposite sides of the row of apertures and presenting a curved profile to the seeds and defining a throat of which the width can be adjusted by a single knob through a high ratio adjustment mechanism.

REFERENCES:
patent: 3796346 (1974-03-01), Ribouleau
patent: 4155801 (1979-05-01), Provancher
patent: 4285444 (1981-08-01), Tye
patent: 4449642 (1984-05-01), Dooley
patent: 4469244 (1984-09-01), Maury
patent: 4515291 (1985-05-01), Holmes

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