Seed metering device

A - Human Necessities – 01 – C

Patent

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A01C 7/08 (2006.01) A01C 7/12 (2006.01)

Patent

CA 2379078

A seed metering device includes a roller nip for mounting beneath a seed reservoir. The nip is formed by first and second opposed facing nip forming surfaces mounted beneath, and aligned with, the reservoir wherein the first nip forming surface is a radially-outer surface of a soft resilient roller. The roller is rotatable by a roller drive in a first rotational direction so as to draw down through the nip, by frictional engagement of the seeds in the nip with the surface of the resilient roller, seeds falling into the nip. The nip is an elongate, curved, thin wedge-shaped nip providing an increased dwell time for seeds being compressed in the nip.

Un doseur de semences comprend un élément d'écartement entre rouleaux à installer sous un réservoir à semences. Cet élément est formé par la première et la seconde surface qui constituent l'écartement face à face installé au-dessous et aligné avec le réservoir. La première surface qui constitue l'écartement est une surface disposée radialement à l'extérieur d'un rouleau mou et flexible. Ce rouleau peut être mis en rotation par un entraînement de rouleau, dans un premier sens de rotation, de façon à tirer vers le bas au travers de l'écartement, par engagement à frottement des semences dans l'écartement avec la surface du rouleau souple, les semences tombant dans l'écartement. L'écartement, de forme allongée, incurvée, à coins minces, assure un temps de passage accru aux semences comprimées dans l'écartement.

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