Bourgault Industries, Inc.

Gerard F J Bourgault

Robert Butterfield

Disk coulters are used on numerous soil engaging farm implements to cut furrows into which seed or fertilizer can be deposited. Disk coulters may also be used to cover furrows or simply cut trenches in the land. Typically, an implement or tool bar frame may have several disk coulter assemblies attached to the frame. Some are dedicated to inserting seed into the soil and other fertilizer. In an alternate configuration, the implement or tool bar may have a combination of shanks and coulters. In any given application it may not be necessary to use some of the coulter disks assemblies. Because of the wear on coulters as they move through the soil and encounter rock and other debris, it is advantageous to be able to quickly lift some of the coulter disks out of the soil while operating with other disks. The present invention provides an eccentric rotating element attached to a spring which generally in operation exerts force upwardly on the coulter arm and therefore maintains the coulter in a downward position. By rotating this eccentric rotating element the spring may be released and the coulter disk raised, by hand, off the ground and thereafter locked in place with a spacer element. With the present invention the operator can easily lift or lower coulters in the midst of a seeding operation.

Quick release and storage system based on an eccentric rotating element

A coulter closing wheel assembly, a method of planting, and a mid row banding pneumatic coulter drill assembly support vehicle. One fertilizer coulter is positioned between two seeding coulters. The seeding coulters are followed by a furrow closing disc which scrubs the ground and pushes soil back into the furrow. The seeding coulters are also followed directly by a packer wheel. The fertilizer coulters may or may not employ a furrow closing disc, depending on the type of fertilizer and the type of soil. In the event of granular or liquid nitrogen fertilizers the closing disc is generally not necessary. However, when a gaseous fertilizer such as anhydrous ammonia is applied to the soil, the furrow closing disc is necessary in order to prevent the escape of the anhydrous ammonia into the atmosphere. The coulters are firmly attached to horizontal frame members of the drill and placed at an angle of a few degrees off the direction of travel. The injection of fertilizer directly between a pair of seed rows ensures a steady supply of nitrogen or other fertilizers throughout the growing period. In addition, since the fertilizer is placed a fair distance from each of the seed rows, it will not scorch or burn the roots of the growing crop.

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St. Brieux, Canada

Gerard F J Bourgault