One-by-one pneumatic seeder

Details One-by-one pneumatic seeder One-by-one pneumatic seeder

1976-03-15

1977-06-14

Tollberg, Stanley H.

Article dispensing

With discharge assistant

Article adhering or gripping type

A01C 704

Patent

active

040292355

ABSTRACT:
A one-by-one pneumatic seeder with a seed dislodging member. A rotary seed dispenser disc defining a wall of a seed hopper has a perforate annular zone with an array of equidistant holes concentric with the axis of rotation of the dispenser disc. The annular zone rotates relative to the dislodging member which is disposed juxtaposed to the dispenser disc and gradually approaches, though never crossing the circle defined by the centers of the holes in the annular zone. A part circular suction chamber is disposed on the side of the dispenser disc opposite the dislodging member, the forward end of the suction chamber relative to the direction of rotation of the dispenser disc substantially coinciding with the portion of the dislodging member closest to the circle of hole centers. The seeds are thus gradually rocked by the dislodging member and loosened before arriving at the forward end of the suction chamber where they are released eventually by the cutting off of suction. The dislodging member may be curved, flat or even cylindrical, perpendicular or otherwise angled to the plane of the dispenser disc, and entirely radially inwardly or outwardly of the circle of hole centers.

REFERENCES:
patent: 2991909 (1961-07-01), Lamazou et al.
patent: 3209888 (1965-10-01), Sterling

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