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Sowing share

  • US 9,585,299 B2
  • Filed: 09/23/2013
  • Issued: 03/07/2017
  • Est. Priority Date: 12/18/2012
  • Status: Active Grant
First Claim
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1. A coulter attachable to a coulter frame, said coulter comprising:

  • a coulter disc for delivering agricultural materials into soil along a direction of travel;

    a coulter holder for adjusting the height of the coulter disc relative to the coulter frame, said coulter holder including;

    a parallelogram arm member,a lifting cylinder, wherein actuation of the lifting cylinder adjusts the height of the coulter disc, anda coulter element for coupling the coulter disc to the coulter holder, said coulter element pivotally coupled to the parallelogram arm member to pivot about a swivelling axis of the coulter holder; and

    a height measuring apparatus located in a region of the coulter disc for use in determining a measured penetration depth Tm indicative of a penetration depth T of the coulter disc into the soil, said height measuring apparatus including a measurement arm for mechanically contacting the soil, wherein the measurement arm is pivotally coupled to the coulter holder to pivot about said swivelling axis of the coulter holder,wherein the penetration depth T of the coulter disc into the soil is adjustable in accordance with the measured penetration depth Tm.

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