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Air drill apparatus

  • US 5,481,990 A
  • Filed: 03/10/1994
  • Issued: 01/09/1996
  • Est. Priority Date: 03/04/1994
  • Status: Expired due to Term
First Claim
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1. Air drill apparatus for towing behind a tractor and for placing particulate material in the ground, comprising:

  • wheeled implement means adapted to be towed behind the tractor, said implement means including at least one transversely extending implement mounting bar;

    at least one air drill assembly mounted to said implement mounting bar; and

    container means for the particulate material to be placed in the ground, said container means including means for creating a positive air pressure to drive particulate material therefrom to said air drill assembly;

    said air drill assembly comprising;

    an elongated arm pivotally connected to said mounting bar;

    a single thin, circumferentially sharp disc wheel rotatably mounted to said arm at a slight angle to the vertical and at a slight angle to the direction of travel for cutting a narrow furrow in the ground;

    seed boot means connected to said container means and mounted to said arm adjacent said disc wheel and the ground for depositing particulate material in said furrow;

    seed lock wheel means mounted to said arm adjacent and behind said disc wheel for pushing deposited seed or other particulate material deeper into said furrow; and

    a single adjustable depth control wheel for controlling the depth of furrow cut by said disc wheel, said depth control wheel means being rotatably mounted to one end of a journal member the other end of which is rotatably mounted to said arm, said journal member including, extending upwardly therefrom, an arcuate portion having a series of equally spaced apart notches therein, said arm carrying a housing with at least one reciprocable latch member therein, said latch member being engageable with a selected one of said notches to adjust the position of said depth control wheel relative to said disc wheel.

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