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5078214 |
A method of preparing land for tree planting includes the step of ameliorating small zones of the land required for planting. These zones may be between the rows of stumps after tree felling and are of the order of one meter square and 2...
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4944353 |
An agricultural machine comprises a self-propelled chassis (1) and an arrangement for displacement of the working member (9) over the field surface, comprising a hermetic chamber (3) with a port (4), a source (2) of a fluid agent pumped ...
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4944140 |
An automatic guidance system for a lawn mower comprises four tension cables (10 to 13) each anchorged at a point (15) adjacent one of the corners of a quadrilateral area and each wound round a winch drum (16 to 19) on the mower, a motor ...
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4936708 |
An apparatus for directing the forward movement of a rod as it is moved through a loose medium has the versatility either to direct or not direct such movement. The apparatus has a directing member that is disabled in a first position wh...
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4756260 |
The combination of a self-powered reel dolly and a traveling plow injector carriage joined together by a traveling hard hose supply line is disclosed. The plow injector carriage carries a multiple shank plow and a plurality of injector p...
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4389799 |
A dual winch for mounting on a tractor comprises a pair of winch drums separately connected via a clutch to a common drive shaft. Each winch drum typically incorporates a planetary gear unit. The cables on the winches are connected to a ...
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4339908 |
The invention relates to vegetation clearing devices and more particularly to a gravity roller means for use in vegetation clearing. The invention provides a vehicle for use in vegetation clearing which comprises a winch arrangement moun...
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4161143 |
An automatic steering mechanism is provided for causing a large farm tractor or other prime mover to selectively follow a predetermined path such as a furrow previously formed in a field. It is contemplated that the prime mover is provid...
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3692119 |
A novel ski slope grooming method, similar to an ironing procedure in which the iron is caused to glide smoothly over the surface to be smoothed and compressed, is carried out through the employment of a novel snow-riding vehicle, having...
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3680639 |
A miniature power operated, rotary mowing device having an earth and grass edger for sprinkler heads and employing a simple manual operable means manipulated by an operator for quickly being rendered capable of performing the rotary mowi...
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3613803 |
A ripper for disrupting hardpan, plowpan, compacted soil and the like, characterized by the utilization of a plurality of fluid-cooled, hardpan ripper chisels, mounted on a horizontally displaceable support, a prime mover, including a po...
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3601200 |
An automatic plowing apparatus having a self-propelled vehicle carrying facing plows guided by a cable extended across a field. Opposite ends of the cable are attached to movable anchoring units which index across the field as the plowin...
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3561538 |
This invention relates to the control of the height or cross slope or both of an earth working tool such as a scraper blade with height control achieved by use of an external elongated reference member disposed along the path to be trave...
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3540360 |
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3526980 |
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3500564 |
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3355214 |
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3242835 |
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3226858 |
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3062299 |
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3044196 |
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3006420 |
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2929457 |
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2910789 |
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2873541 |
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2842039 |
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2798315 |
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2723493 |
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2659447 |
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2655006 |
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2644251 |
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2594904 |
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2549260 |
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2379280 |
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2350880 |
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2348796 |
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2334323 |
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2062282 |
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1868770 |
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1788604 |
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1782690 |
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1755247 |
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1743961 |
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1729781 |
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1718939 |
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1703669 |
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1702018 |
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1694226 |
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1679754 |
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1601944 |
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