Agricultural tractor with draft load sensing springs for power l

Details Agricultural tractor with draft load sensing springs for power l Agricultural tractor with draft load sensing springs for power l

1975-09-22

1977-11-22

Stouffer, Richard T.

Earth working

Automatic power control

Draft responsive

33147K, A01B 63112

Patent

active

040591590

ABSTRACT:
A tractor has a power lift mechanism controllable automatically in known manner by implement draft load sensing apparatus. This apparatus comprises two leaf springs which are spaced apart in a lateral direction relative to the tractor, the springs being connected at their front ends to the tractor and being adapted to flex in the lateral direction but being stiff longitudinally of the tractor and vertically; two hitch links each connected to the rear end of one of the springs; and equipment for transmitting to the power lift mechanism a control signal derived from any variation in the distance between the flexible portions of the springs.

REFERENCES:
patent: 2832148 (1958-04-01), Rousse
patent: 3342274 (1967-09-01), Wridt, Jr.
patent: 3375876 (1968-04-01), Engelmann
patent: 3399733 (1968-09-01), North
patent: 3527305 (1970-09-01), Dollase

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