A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/119
A01B 63/111 (2006.01)
Patent
CA 1066111
ABSTRACT OF THE DISCLOSURE An improved draft and position control system for a tractor. Independent manually operable draft and position controls are provided for establishing a desired draft and/or position of an implement drawn by a tractor. The position control establishes the maximum lowered position to which the implement may descend and will override any draft signals which would tend to lower the implement beyond this point. The draft control includes the draft responsive member interconnected with a feedback mechanism which will tend to maintain the desired draft on the implement. An additional position feedback is provided which can moderate the draft feedback to prevent undue response of the implement during changes of the draft load. In accordance with the principles of this invention the position feedback which moderates the draft feedback can be infinitely varied between a first setting wherein it fails to moderate to a second setting where it substan- tially moderates. Furthermore, the moderating position feedback is inoperative over a range of movement corres- ponding to that movement of the implement above the ground.
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