Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 6920939 | Walk-behind electric cultivating machine A walk-behind electric cultivating machine has a body frame, an electric motor mounted on the body frame and having a motor shaft, and batteries mounted on the machine body frame for supplying electric power to the electric motor. Each of the batteries has a longitu... | 07/26/2005 |
| 5924495 | Apparatus and method for removal of surface debris from crop rows An apparatus for cleaning debris from the surface of crop rows without substantially damaging the growing crop having a wheeled frame attachable to a pulling vehicle, the wheels positioned to avoid a growing crop, at least one journalled rotatable shaft a... | 07/20/1999 |
| 4987959 | Farm machine for working the soil The farm machine 1 for working the soil comprises tools 21 each of which consists of a concave disk 47 provided with a plurality of spades 48 at its periphery. The concavity of the concave disk 47 is directed toward the forward end 12 of the rotor 16, con... | 01/29/1991 |
| 4967849 | Guard assembly for earth tillers The invention provides an apparatus which is adapted to be attached to conventional ground tillers such as the "Roto-Tiller" to prevent the build-up of grass and weeds around the drive shaft of the tines. The invention comprises a plurality of stationary ... | 11/06/1990 |
| 4716971 | Tillage implement A tillage implement comprising a plurality of coulters or discs is provided with disc cleaning means to prevent the accumulation of dirt and debris between adjacent coulters or discs. The disc cleaning means can comprise a rotatable belt mounted between a... | 01/05/1988 |
| 4506610 | Subsoil rotary cultivator Disclosed is a subsoil rotary cultivator. The cultivator can advantageously include a tool bar which is mounted to the tractor in the usual fashion. Group frames are advantageously mounted upon the tool bar and have spring-loaded pivoting arms upon which ... | 03/26/1985 |
| 4412587 | Soil working machine A soil working machine has a working member with element blades and a scraping member that releases clods cut out by the working member so that the clods drop to the ground. Both of the members can be positively driven in the same direction about horizont... | 11/01/1983 |
| 4402365 | Garden tiller with vegetation sloughing means A walk-behind garden tiller having power driven ground wheels and a single shaft of tines which are driven at relatively high speed in a direction counter to that of the drive wheels such that during tilling the tines cut upwardly through the untilled soi... | 09/06/1983 |
| 4294181 | Subsoil agricultural implement with rotatable disc A subsoil implement is disclosed that utilizes a horizontally rotatable disc that is moved beneath the surface of the ground for the purpose of cultivating or for producing a sub-surface bed for placing flowable material such as seed or soil treating gas ... | 10/13/1981 |
| 4293041 | Power cultivator with debris excluding barrier and scraper A hand-held power driven cultivator incorporating a pair of ground working implements or tillers mounted on a pair of laterally spaced vertical shafts depending from a motor and drive train enclosing housing. The tillers are counter-rotated and include in... | 10/06/1981 |
| 4240510 | Combined scarifier and branch slashing and crushing implement A combined scarifier and branch slashing and crushing implement is disclosed. The implement comprises a rectangular frame, a cylindrical roller rotatably mounted in the frame and extending longitudinally of the frame, plural rows of longitudinally spaced ... | 12/23/1980 |
| 3960219 | Soil cultivating implements A soil cultivator has at least one rotor mounted for rotation about a horizontal axis and rows of rigid soil working tines are secured on the rotor to be driven through the soil in a direction opposite to the travel direction of the cultivator. The tines ... | 06/01/1976 |
| 3954143 | Rotary ploughs A rotary plough has a rotor that rotates about a horizontal axis defined by a central support. The rotor comprises three spaced apart groups of soil working tines and each group includes a row of tines mounted on arms that extend radially with respect to ... | 05/04/1976 |
