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| Number | Title | Issue Date |
| 4273197 | Reversible ploughs A reversible plough has a double acting hydraulic ram connected between the headstock and the reversing spindle to reverse the plough frame from a left handed to a right handed ploughing position, and vice versa. Hydraulically operating mechanism is provi... | 06/16/1981 |
| 4260028 | Earth working attachment for tractors An earth working attachment which can be easily manufactured, assembled and installed on a tractor of any size but is primarily suitable for garden type tractors as have low horsepower and includes tractor mounting brackets, a main beam supporting the ear... | 04/07/1981 |
| 4236582 | Powered ground aerator A powered machine for moving along the ground surface and producing a succession of holes therein to aerate the soil. The present aerator includes a pair of ground-penetrating members that are moved alternately to engage, penetrate, and disengage the grou... | 12/02/1980 |
| 4210210 | Quick mounting mechanism for agricultural implement A mechanism for quickly and independently mounting detachable soil engaging tools on mobile agriculture equipment includes a vertically extending frame member and a pivotal tool support member. The frame member and tool support member have a tool mounted ... | 07/01/1980 |
| 4193456 | Biased agricultural implement Apparatus for connecting soil engaging tools to mobile agricultural equipment includes a vertically extending frame adapted for connection to the agricultural equipment and a trailing arm pivotally attached to the frame and having soil engaging tools atta... | 03/18/1980 |
| 4067396 | Roll-over mechanism for two-way plow Mechanism operating through a mechanical advantage for rolling over a two-way gang plow comprises a pair of hydraulic cylinders acting through respective short links connected pivotally at one of their ends to their associated cylinders and at their oppos... | 01/10/1978 |
