Seed disk for planting canola with a vacuum meter planter

摘要

A unique seed disk for use in a vacuum type agricultural planter is particularly suited for planting of canola seed. Seed apertures extend through the disk in the thickness direction from the vacuum-side face thereof to the opposing seed-side face thereof, and are each circular in cross-sectional shape. Each apertures features a cylindrical end portion opening through the vacuum-side face of the disk body, a first frustoconical portion whose wider end communicates with the cylindrical end portion, an intermediate cylindrical portion communicating with the narrower end of the first frustoconical portion, and a second frustoconical portion having a narrower end that communicates with the intermediate cylindrical portion and an opposing wider end that opens through the seed-side face of the disk body. A preferred embodiment features ninety seed apertures in the disk, and an accompanying twelve prong knockout wheel for dislodging debris individually from the seed apertures.

主权项

1. A seed disk for use in a vacuum seed meter of an agricultural planter to plant canola seed, the seed disk comprising:
a disk body for rotatable support within a housing of the vacuum seed meter for rotation of said disk body about a central axis thereof, the disk body having a vacuum-side face and an opposing seed-side face that are disposed in respective planes lying normal to the central axis and spaced apart from one another along a thickness direction of the disk measured along the central axis thereof; a plurality of apertures extending through the disk in the thickness direction from the vacuum-side face thereof to the opposing seed-side face thereof, the apertures being circumferentially arranged around the central axis of the disk at equally spaced apart positions from one another near an outer periphery thereof; wherein each aperture is of circular cross-sectional shape in cross-sectional planes lying normal to the central axis, and comprises a cylindrical end portion opening through the vacuum-side face of the disk body, a first frustoconical portion communicating with the cylindrical end portion through a wider end of said first frustoconical portion, and a second frustoconical portion communicating with the first frustoconical portion through a narrower end of said second frustoconical portion and opening through the seed-side face of the disk body at a wider end of said second frustoconical portion.