Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7255049 | Subsurface soil injection method A method for the subsurface application of fertilizers, biologicals, fumigants, non-fumigant pesticides or other chemicals to soil with reduced application rates. Discrete amounts of the materials are injected into the soil at numerous sites along a path during a pa... | 08/14/2007 |
| 7144202 | Silt fence installation apparatus A machine to install the lower edge of silt fence fabric in a seam in the soil includes a frame with a plow member attached. The frame can be mounted to the three point hitch of a tractor so that the machine can be raised, lowered, and tilted while being supported b... | 12/05/2006 |
| 7044689 | Silt fence installation apparatus A machine to install the lower edge of silt fence fabric in a seam in the soil includes a frame with a plow member attached. The frame can be mounted to the three point hitch of a tractor so that the machine can be raised, lowered, and tilted while being supported b... | 05/16/2006 |
| 6356830 | System and method for automated measurement of soil pH An apparatus for automatically measuring soil pH at a relatively large number of places in a field, and automatically creating a soil pH map by simultaneously measuring the position of the apparatus and storing the pH data in association with the location... | 03/12/2002 |
| 6138771 | Tine for mounting on soil-working implement A tine for mounting on an agricultural soil-working implement includes a mounting portion at the upper end of the tine for mounting the tine in cantilever manner on a frame portion of the implement. A shank portion projects downwardly from the mounting po... | 10/31/2000 |
| 5730228 | Tool for a row cultivator, having a leading blade and cutting blades A row cultivator (10) includes a row following system (12) coupled to a toolbar (13) employing frame members (17) and (18) constrained to remain parallel by a cross member (21). Coulter wheels (30) and (31) secured to the frame members (17) and (18) are n... | 03/24/1998 |
| 5490340 | Root grubber A root grubber tool for brush which is attached to the boom of an excavator, such as, a track excavator or backhoe. The tool includes a framework which has a pair of side members which support, at the lower end thereof, a cutting blade with its leading ed... | 02/13/1996 |
| 5443126 | Grubber tine The invention relates to a grubber tine of a tubular cross-section which, as compared to known grubber tines, give reduced weight and larger flexure and vibrations when moved through the soil, which gives reduced tractive power. The grubber tine is adapte... | 08/22/1995 |
| 4932475 | Blade plow with resilient mounting This invention relates to a blade plough suitable for use on undulating ground. The blade plough has a floating blade which is able to pivot irrespective of the drawbar attachment to the tractor. A spring mechanism is provided to bias the blade in an oper... | 06/12/1990 |
| 4895211 | Land clearing root plow and soil aerator A plow having a forwardly facing V-notched digger blade, lifting wings, side arms, frame members, ears for attaching a hitch and breakable attachment of the hitch to the tow vehicle is provided. In use the plow cuts or digs out subterranean plant roots, a... | 01/23/1990 |
| 4879871 | Beach combing apparatus A beach combing apparatus is set forth wherein a plurality of spaced runners have secured therebetween an elongate blade member formed with a forwardly positioned beveled planar blade formed with a spaced parallel rear overfolded edge to provide strength ... | 11/14/1989 |
| 4852337 | Method and apparatus for removing aquatic plants A method of and rake for removal of aquatic plants; the method has the steps of pulling a rake over an underwater bottom, engaging aquatic plants with flexible, resilient teeth and a flexible, resilient filament strung between the teeth, pulling the plant... | 08/01/1989 |
| 4846284 | Bean cutting knife An improved bean cutting knife is described which includes a replaceable cutting blade. The knife support includes a recessed area along its working edge. The cutting blade fits into the recessed area and is detachably secured with threaded fasteners, for... | 07/11/1989 |
| 4825959 | Fertilizer system An improved fertilizer system for use in conjunction with a sweep blade comprises a pipe and a structural channel. The pipe carries liquid fertilizer along each blade and is protected along the blade by the channel. The channel is bolted or otherwise atta... | 05/02/1989 |
| 4823884 | Plow cleaning device The problem of having dirt and debris stick to the shank of a subsoil plow is solved by providing a non-stick cover body that attaches to a lower portion of the shank and is sized and configured and of a material to which dirt and debris will not adhere. ... | 04/25/1989 |
| 4781253 | Shield for soil ripping implement Agricultural tilling implements are described. In some embodiments the implements are adapted for deep tilling of soil between growing row crops, in which embodiments a horizontal shield member is detachably secured to a depending shank. The front edge of... | 11/01/1988 |
| 4409912 | Agronomic implement A cultivating implement include a soil working tool having an elongate substantially planar blade. The blade extends sidewardly and downwardly at an acute angle to the vertical so that its plane is substantially parallel to the direction of movement throu... | 10/18/1983 |
| 4293043 | Soil undercutter with trip release for pivotally mounted shank The present invention relates to a shank assembly for a soil undercutter, which is similar to an extremely wide cultivator shovel which travels underneath the ground and cuts the roots from weeds and plants without substantially disturbing the surface of ... | 10/06/1981 |
| 4174002 | Soil cultivating machines A cultivating machine has soil working members that are driven to rotate about corresponding upwardly extending shafts. Each member includes a generally horizontal support and a tine or tine-shaped portion at each outer end thereof. The lower straight par... | 11/13/1979 |
