Buhler Ezee-on Inc.

Sean Lewis

Sylvio Tessier

Gary Bergen

Larry Beever

Grant Howard Adolph

Leo V Turko

James Eichele

Tim Strydhorst

Ryan Pinfold

Sylvio J Tessier

Grant H Adolph

Larry T Beever

A seeder includes a frame on ground wheels defining tool bars for seeding elements spaced across the frame. Each element includes a pair of parallel arms connected to the tool bar bracket forming a parallel linkage for up and down movement of a support arm connected at a rear end and carrying the packer wheel. A spring applies a downward spring force on the parallel linkage to apply a downward force on the packer wheel so that the spring force increases as the parallel arms pivot upwardly and decreases as the parallel arms pivot downwardly. A control device is arranged to raise and lower the tool bar in response to a detected value of a sensor so as to change the angle of the parallel linkage and change the spring force. A cam controlled double rack adjustment of the height of the opener allows the user to change seeding depth.

Tool control system for agricultural seeders

Growing community of inventors

St. Albert, Canada

Sean Lewis