Earth working – Automatic power control – Motive power control
Patent
1983-05-23
1987-04-14
Stouffer, Richard T.
Earth working
Automatic power control
Motive power control
172 4, 172 26, 180131, 318587, 114144A, A01B 63114, A01B 6904
Patent
active
046570870
ABSTRACT:
In a particular species of the preferred embodiment, the invention contemplates a land traveller such as a farm tractor pulling a passive load such as a plough, disc or the like. A control device for directing or controlling the path of travel of the vehicle over a field, and also regulating or controlling the depth of penetration of the plough or disc into the surface of the ground according to a predetermined depth irrespective of the terrain profile. The path control system consists of locating in a predetermined way, a track whose position is sensed by an electromagnet, and the relative position of the magnet is sensed by appropriate devices such as resistence measuring devices (strain gauges or variable resistors or reostats), photoelectric devices whose values are decoded through a microprocessor whereby steering of the prime mover along the predetermined path is maintained.
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