A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
138/80.1
A01B 63/112 (2006.01)
Patent
CA 1157742
ABSTRACT OF THE DISCLOSURE A tractor draft load monitoring system responsive to tractor and associated implement load changes. The system is particularly adapted for a tractor having an engine/transmission power unit coupled to its drive shaft. The power unit is mounted on the frame by resilient mounts that permit measurable angular displacement of the power unit relative to the frame about the drive shaft axis in reaction to changes in the drive shaft torquè. The working depth of the implement, which may be tractor mounted, semi-mounted or a pull type implement, is raised or lowered by a hydraulic lift system that is controlled by a control valve assembly connected to a source of fluid under pressure. Interposed between the power unit and the control valve assembly is a transmission cable (Bowden wire type) and lever system that is operative to transmit angular displacement of the power unit to an actuating member of the control valve assembly to cause hydraulic actuation of the hydraulic lift device to change the working depth of the implement to compensate for changes in its draft load. The lever system is coupled to a manual operating means which may be moved to an extreme implement raising or lowering position causing fluid flow to bypass the control valve, thereby nullifying its effect.
417113
Ford Motor Company Of Canada Limited
Sim & Mcburney
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