Earth-working implement

A combination earth-working and seed planting implement comprising:

• frame means adapted to be moved over the ground by a propelling means, such as a tractor,
• at least one subsoil plow means including a plate-like stock carried by said frame means and provided with a downwardly and forwardly curved forward cutting edge terminating in a substantially pointed tip at a given level below said frame means,
• a pair of cutting discs spaced one from the other and positioned to straddle the forward path of travel of said stock during earth-working by the implement, said discs being inwardly concave and forwardly diverging relative to each other and with respect to said path of travel and each disc being located rearwardly of said stock with the lower extremities of said discs being spaced above said given level of said tip so as to aid in leveling and smoothing the soil upset by said stock,
• means rotatably supporting each cutting disc to maintain the same in a predetermined position during operation of the implement and including
• elongate mounting post means positioned with a longitudinal axis thereof substantially vertical and having a non-circular cross-sectional configuration,
• said mounting post means being twisted intermediae its ends to form an upper shank portion and a lower disc-mountig portion thereof with said lower portion extending in substantially axial alignment with said shank portion and at a predetermined radial angle relative to said shank portion by virtue of the twist in said post means,
• shaft means extending radially outwardly from said lower portion of said post means and rotatably supporting the respective disc thereon, and
• means on said frame means having an opening therein for receiving said shank portion of said post means therein and wherein said opening is shaped and sized to restrain said shank portion from rotation therein and to thereby maintain the respective disc at the desired predetermined angle with respect to the path of travel of said stock over the ground, and
• seed planter means carried by said frame means and including furrow opening means spaced rearwardly of said discs and being positioned along the path of travel of said stock so as to form a planting furrow in the soil leveled and smoothed by said discs, and seed dispensing means for depositing seeds into the furrow rearwardly of said discs.