Drill for applying seed and fertilizer

Claim 1

In a drill for direct seeding which is movable in a given direction of travel for applying seed and fertilizer into soil, the drill having a frame, sowing shares with at least two separate inlets and outlets for seed and fertilizer and a pressure roller mounted behind each share, means for conveying the seed and fertilizer in controlled amounts through separate conduits inside the shares for application into the soil, wherein the outlets are at an interval from each other along the direction of travel, wherein the shares are connected to the frame with parallelogram mounts to mount each share and allow vertical adjustment of the depth to which the share penetrates into the soil, each sowing share has chisel at the front thereof in the direction of travel; roller means limiting the depth ofthe shares the improvement wherein: each sowing share has continuous substantially parallel plates extending rearwardly of the sides of the chisel in the direction of travel to the rearmost outlet and said parallelogram mounts maintaining the front of each chisel with respect to the direction of travel substantially vertical straight down direction, the sides of the lowest part of the chisel penetrating into the soil are no wider than the sides at the top of the chisel and the chisel has at least approximately the same width as the width between the sides of the share plates and wherein the forwardmost outlet is defined by the rear face of the chisel and direclty aimed immediately behind the chisel and the rearmost outlet terminates rearwardly of the forwardmost outlet defined at the rear of the plates and substantially above the lowest part of the chisel and thereby the bottom ofthe furrow formed by the chisel; the bottom edges of the parallel plates sloping upwardly, rearwardly from the forwardmost outlet to the rearmost outlet, whereby a layer of soil can be formed between the outlets as each share is advanced.