B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
262/2, 180/58
B62D 1/02 (2006.01) A01B 45/04 (2006.01) A01B 69/04 (2006.01)
Patent
CA 1138781
ABSTRACT OF THE DISCLOSURE An automatic steering mechanism for a sod harvester, in which a shoe follows the cut edge of a strip of sod. The shoe has a working edge which slides along the cut sod edge and penetrates slightly into it, to resist the tendency of the shoe to ride up over the cut edge. A ramp on the front of the shoe is also spaced away from the working edge for the same reason. The shoe is mounted on an arm which in one embodiment actuates a pair of automobile points which transmit steering signals to a solenoid hydraulic steering valve. A mechanical connection between the steered wheels and the arm provides feedback. In another embodiment the arm on which the shoe is mounted is mechanically connected to and moves a valve shuttle bracket which operates the hydraulic steering valve. Feedback is provided by a mechanical con- nection from the steered wheels to a mounting block on which the steering valve is mounted, to move the steering valve bodily in a direction which counteracts the movement of the shuttle.
332285
Bereskin & Parr
Brouwer Turf Equipment Limited
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