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Agricultural apparatus with an automatic positioning mechanism and method

  • US 4,607,716 A
  • Filed: 10/14/1983
  • Issued: 08/26/1986
  • Est. Priority Date: 10/14/1983
  • Status: Expired due to Fees
First Claim
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1. In an agricultural apparatus having an automatic positioning mechanism, a framework supported in a position above the ground for movement over the ground, an arm connected to the framework at a predetermined angle, a ground-engaging member carried by the arm for following a predetermined path as the apparatus is moved over the ground, said arm being mounted to permit limited movement of the arm angularly relative to said framework in a direction lateral to said path to change said angle, actuator means for causing movement of the framework responsive to said limited movement, electrical circuit means responsive to the movement of said arm from said predetermined angle and connected to said actuator means for causing operation of the actuator means to automatically position the framework so that the framework travels along a path which is parallel to said predetermined path, the ground-engaging member being mounted to trail the mounting for the arm so as to minimize the load produced by said ground-engaging member;

  • said apparatus including a self-propelled vehicle, and the framework being mounted on the vehicle extending forwardly from the front of the vehicle, the mounting for said arm being near the forward portion of the framework with the ground-engaging member extending rearwardly towards the forward end of the vehicle;

    the electrical circuit means including a tracking unit which is responsive to the angular movement of said arm, and including means for transmitting electrical signals to cause the actuator to move the framework in a manner to return the arm to its predetermined angle.

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