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Precision sowing seed drill

  • US 4,387,656 A
  • Filed: 03/31/1981
  • Issued: 06/14/1983
  • Est. Priority Date: 03/31/1980
  • Status: Expired due to Term
First Claim
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1. A seed distributor of the type comprising for each furrow a ploughshare for opening the furrow, a pneumatic transport channel for seeds ending in the furrow, and a setting wheel sinking the seeds distributed in the furrow, the terminal part of the pneumatic transport channel being directed toward the apex of the dihedral formed by the lower forward peripheral surface of the setting wheel with the bottom of the furrow and terminating within the furrow adjacent the bottom of the furrow and directly beneath a portion of the periphery of the setting wheel that is within the furrow, whereby when seeds are released under the action of air pressure from the pneumatic transport channel they are immediately captured in the nip formed by the setting wheel periphery and the bottom of the furrow to be depressed into the bottom of the furrow in spaced relation.

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