...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7857072 | Row unit soil finishing apparatus The agricultural row units feature soil finishing assemblies. This configuration of the finishing assembly provides a simple adjustment of the height of the finishing assembly to enhance usability and flexibility of the row unit. The improved adjustment mechanism en... | 12/28/2010 |
| 7240627 | Crop debris clearing device A residue coulter apparatus that cleanly severs and clears crop debris from a planting row, causing minimal disturbance to the soil. The residue coulter apparatus comprises a pair of flat discs each having a plurality of back swept shark type teeth extending about t... | 07/10/2007 |
| 7156186 | Strip-till conditioning rotary reel These and other objects and objectives are attained by providing an soil conditioning rotary reel for a strip-till primary tillage system, the rotary reel having a particular cross-sectional profile that forms the soil into a uniform raised berm ideally suited for p... | 01/02/2007 |
| 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 |
| 7143836 | Soil conditioning rotary reel for primary tillage operations A soil conditioning rotary reel for primary agricultural tillage implements is disclosed. The reel incorporates formed bars slightly spiraled along the length thereof that increase the overall strength of the reel and, because of the shape of the formed bars, suppor... | 12/05/2006 |
| 7143837 | Soil conditioning rotary reel for secondary tillage operations A soil conditioning rotary reel for secondary agricultural tillage implements is disclosed. The reel incorporates formed bars slightly spiraled along the length thereof that increase the overall strength of the reel and, because of the shape of the formed bars, supp... | 12/05/2006 |
| 7104341 | Low disturbance deep tillage point Ripper point structure includes a nose with a tapered top that initiates lift and fracture of compacted soil layers. The tapered top with an included angle of about 100 degrees just forward of the parting wear shin creates a parting stress which increases until the ... | 09/12/2006 |
| 7100314 | Plow blade float attachment A plow blade float attachment for preventing damage to a side deflector on a plow blade. The plow blade float attachment includes an arm member pivotally attached to a deflector member of a plow blade, a contact member attached to the arm member, a guide member atta... | 09/05/2006 |
| 7063166 | Earth grooming device An earth grooming device for attachment to a vehicle includes a rectangular frame having a plurality of teeth secured to the front thereof to form a rake and a scraper blade secured to the rear of the frame. A side rail is attached to each side of the frame with eac... | 06/20/2006 |
| 7017675 | One-pass primary tillage machine A one-pass primary tillage machine provides a combination of shallow and deep tillage, residue cutting and mixing, and clod size reduction and leveling of the field to prepare the field for the next planting season. A front group of flat coulters slice through the r... | 03/28/2006 |
| 6997121 | Minimum tillage agricultural implement having furrow opening shank assemblies An agricultural implement for forming a furrow in a soil, is described and which includes a rotatable shank; a resilient, movement limiting member disposed in force transmitting relation relative to the rotatable shank; and a pair of wheels mounted for earth engagin... | 02/14/2006 |
| 6880644 | Deep tillage ripper with independent, spring-mounted closing wheels A tillage tool includes a relatively narrow shank that slices through the soil while a ripper point at its lower end fractures and lifts the subsoil. Minimum surface disturbance adjacent the opposite sides of the shank is assured through the provision of a pair of i... | 04/19/2005 |
| 6578642 | Rear mounted attachment with single acting cylinder A trailing attachment for a deep tillage implement is supported from the implement frame by transversely spaced four-bar linkages extending rearwardly from the frame. Single acting hydraulic cylinders are pressurized to lift and adjust the attachment. A b... | 06/17/2003 |
| 6557646 | Mulch-till ripper An agricultural tillage implement employing a series of apparatus to perform one-pass primary tillage is disclosed. A cutting disk is the first apparatus that works the field. These disks cut the residue laterally (across the machine) and mix the majority... | 05/06/2003 |
| 6502644 | Leveling wheel structure for a minimum tillage ripper A leveling wheel assembly for a deep tillage ripper tool includes a support bracket fixed to the upper end of the ripper shank and a wheel support arm pivotally connected to the aft end of the bracket. Wheel support structure rotatably mounts a pair of le... | 01/07/2003 |
| 6382115 | Plowshare particularly for seeding and eventual manuring in soil on continuous line Plowshare particularly for seeding and eventual manuring in soil in a continuous line of the type involving two equal and symmetrical opposite convergent wings with an apex having a substantial "V" shaped plan (31). Their ends are turned upwards (32) so t... | 05/07/2002 |
| 6360827 | Method and apparatus for a transportable box blade assembly An apparatus and method transporting an attachment, such as a box blade assembly, which is secured to a land based vehicle has a box blade and a transporting mechanism. The box blade is made up of two opposing side walls, an open top and bottom, and front... | 03/26/2002 |
| 6068061 | Soil zone-builder coulter closer/tiller with vertical response mechanism and shank head An apparatus and method for tilling a seedbed with a soil manipulation device comprising a tilling shank for forming a groove in the soil followed a pair of coulter blades for closing the groove and a rear finishing device such as a rolling basket for fur... | 05/30/2000 |
| 6012534 | Minimum soil displacement chisel plow and soil firming wheel arrangement An agricultural chisel plow row unit designed for minimum soil displacement has a pair of spring-biased firming wheels mounted to either side of and behind the plow shank to firm the surface of the berm formed by the breaking point without affecting the o... | 01/11/2000 |
| 6000476 | Combined rock puller and land leveller The present invention provides a combined rock puller and land leveler implement for alternatively pulling rocks from the ground or leveling the ground, and for pulling rocks from the ground and leveling the ground in one pass of the implement. The combin... | 12/14/1999 |
| 5881820 | Offset/tandom disc-type tillage implement An improved disc-type ground tillage implement for tilling ground. The implement has a frame connectable to a towing machine and having multiple pairs of gangs of blades connected to the frame. The frame is supported by a plurality of wheels which may be ... | 03/16/1999 |
| 5797460 | Straight bar tillage implement A tillage implement includes straight bar ripper structure with a main forward toolbar supporting subsoiler shanks from special brackets which can also support coulters ahead of the shanks independently of additional toolbar structure. An optional rear or... | 08/25/1998 |
| 5794714 | Finish dirt scraper This invention relates to a dirt leveling device adapted for towing by a tractor which is characterized by one or more chisels attached to a transverse shaft on the front of the dirt leveling device having a rotatable relationship thereto, and a dirt leve... | 08/18/1998 |
| 5782307 | Furrow closing apparatus A furrow closer for mounting to an anhydrous ammonia fertilizer applicator knife. The furrow closer has a base plate which can be selectively mounted to a mounting bracket fixed to the shank of the applicator knife. A pair of offset fluted disks lie in in... | 07/21/1998 |
| 5765649 | Implement for loosening soil in an environment including sugar cane mulch An implement includes a toolbar fixed to a three-point hitch of an agricultural tractor. At least two working assemblies are carried by the toolbar, each including a support having two C-shaped claws that are connected at their upper parts to the support,... | 06/16/1998 |
| 5649601 | Plow assembly with floating wing sweep A plow assembly is provided with a row of colters which cut the stalks when the plow is towed by a tractor over a prescribed area of ground. The plow has additional parallel tool bars which carry staggered plow times or shanks which carry plow shares, the... | 07/22/1997 |
| 5623997 | Soil zone-builder coulter closer/tiller A soil manipulation device is provided for closing a groove in soil formed by a soil tiller shank. The device includes a frame connected to a rear portion of the tiller shank and a pair of rotatable coulter blades mounted on the frame for engaging soil be... | 04/29/1997 |
| 5540288 | Primary tillage unit with reduced disturbance of surface soil and residue A conservation tillage unit for use in primary tillage includes a rolling coulter followed by a chisel plow having a narrow shank and a soil working unit mounted to the bottom of the shank. The working unit includes a point and a delta wing mounted behind... | 07/30/1996 |
| 5474135 | Minimum tillage implement A tillage implement for preparing seed beds for planting seeds for row crops. The implement includes deep tillage units for loosening soil behind the wheels of a tractor, additional deep tillage units for loosening soil in the areas where seed beds are lo... | 12/12/1995 |
| 5437337 | Tillage unit with reduced disturbance of surface residue and soil A conservation tillage unit includes a coulter and a plow having a shank, a point and a pair of wings mounted slightly forwardly of the shank. The unit fractures the soil at ground speeds up to seven miles per hour without throwing the surface soil and re... | 08/01/1995 |
| 5437336 | Method and apparatus for creating an advantageous growing zone in a soilbed having a topsoil stratum and a hardpan stratum A soilbed having a topsoil stratum and a subsurface hardpan stratum is fractured by a subsoiling tine to form a trench-like path which extends in depth at least partially into the hardpan stratum. One or more pairs of rotatable blades are operated thereaf... | 08/01/1995 |
| 5409068 | Dual penetration combination sweep with ripper An agricultural plow implement includes a number of upright supports, with each support supporting a shallow tillage V-shaped sweep blade. A mounting plate is attached to the rear of each upright support and a specially adapted ripper shank, with an attac... | 04/25/1995 |
| 5398770 | Cultivator A chisel cultivator for post-planting cultivation. The cultivator includes a main frame. A chisel member has one end portion coupled to the frame and a second end portion spaced from the first end portion along a longitudinal axis of the chisel member for... | 03/21/1995 |
| 5390745 | Cultivator with sweep and sifting assemblies A cultivator for post-planting cultivation. The cultivator includes a main frame. A chisel member has one end portion coupled to the frame and a second end portion spaced from the first end portion along a longitudinal axis of the chisel member for cultiv... | 02/21/1995 |
| 5333694 | Strip-till seed bed preparation apparatus Seed bed preparation apparatus for the no-till preparation of longitudinal strips of soil for the planting of seeds in longitudinal rows including plurality of laterally spaced apart gang assemblies which are individually mounted on a draft vehicle such a... | 08/02/1994 |
| 5249633 | Field breaking implement A field breaking or tilling implement. The implement is mounted or located at a lower end of a shank which is adapted to be drawn behind a tractor. At the lower forward end of the shank is located a chisel point adapted to be pulled through the soil at a ... | 10/05/1993 |
| 5082064 | Tillage implement having depth adjustable discs A tillage implement which has both deep tillage subsoil shanks at the rear of the machine and relatively shallow running, residue cutting and topsoil mixing discs at the front of the machine provides for expeditious depth adjustment of the discs through s... | 01/21/1992 |
| 5080178 | Agricultural tillage implement with improved soil leveler using staggered discs A primary tillage implement having a plurality of chisel plows mounted in lateral spacing on a forward bar, also has a plurality of disc levelers mounted on a rear bar. Each disc leveler assembly is laterally spaced from and centered between the paths of ... | 01/14/1992 |
| 5074061 | Land arranger An earth moving machine is adapted to be pulled behind a tractor or other powered vehicle. The earth moving machine comprises a hitch at a forward end thereof adapted to be connected to the tractor and an axle assembly at a rearward end thereof. A trough-... | 12/24/1991 |
| 5046346 | Agricultural machine The invention relates to an agricultural machine for soil-cultivation, comprising, in the direction (F) of travel of the machine, a first row of cutting wheels arranged at right-angles to the said direction of travel and having substantially horizontal ax... | 09/10/1991 |