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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 5158411 | Seed planting device An improved device for planting seed in the soil, a sowing machine and combined machine for preparing a seedbed and for sowing using the device. According to the invention, an outside part of active part of a tool is provided which includes a carrying ele... | 10/27/1992 |
| 5082063 | Mixing head for soil tillage The mixing head comprises a pair of opposed, spaced apart, generally vertical discs that are generally aligned with the direction of travel, although they are slightly angled so as to be wider apart at their front ends than at their rear ends. The discs a... | 01/21/1992 |
| 4821655 | Lawn seeding machine A machine for slicing and seeding a lawn includes a number of seed distributing discs which are arranged as a bank that is freely pivotable on a vertical axis, to automatically follow in grooves made by slicing blades mounted forwardly in the machine. Wei... | 04/18/1989 |
| 4409910 | Method and apparatus for planting seeds while conditioning soil Method and apparatus for planting seeds in a field. An anti-cohesion liquid chemical is injected at 30 to 50 p.s.i. into a narrow ribbon of soil, no more than two inches wide and two inches deep. Immediately thereafter, the soil ribbon is vigorously agita... | 10/18/1983 |
| 4324295 | Agricultural implement attachable to a tractor An agricultural implement is arranged to be connected to a tractor so that it can be pulled over a field covered with organic material, such as live or dead plants or harvesting residues. The implement includes a main support frame followed by an auxiliar... | 04/13/1982 |
| 4257340 | Tractor-drawn seeding apparatus Seeding apparatus for use in connection with tractor-drawn seeding equipment, particularly reforesting equipment, comprising an inclined tubular member having one end pivotally connected to a thatching device or similar soil-breaking device at an elevated... | 03/24/1981 |
| 4199030 | Method and apparatus for farming row crops A soil working implement for use in forming a raised soil bed is disclosed. The implement includes a carriage assembly and a plowing tool mounted for rotation on the carriage assembly. The plowing tool includes a cylindrical rim and an array of soil diggi... | 04/22/1980 |
| 4124079 | Driven implement connected to rockable motor of a vehicle A self-propelled tiller-planter including a motor providing hydraulic motive power for various operating mechanisms. A tiller pushed by said planter and hydraulic means is provided for lifting and lowering the tiller assembly into inoperative position abo... | 11/07/1978 |
| 3995570 | Cultivators A cultivator has soil working blade members mounted on a horizontal shaft which is driven to rotate the members forwardly through the soil in the normal direction of travel. A baffle comprised of screen segments are mounted on the cultivator frame to part... | 12/07/1976 |
| 3986463 | Agricultural implement A method and apparatus is provided to conserve moisture for growing crops. An over-the-field carrier is provided with harvesting means for severing a prior year's crop stubble from a field. The leaf and stalk material are separated and the leaf material i... | 10/19/1976 |
