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Seed hopper construction with centrifugal blower-filler

  • US 4,758,119 A
  • Filed: 11/12/1986
  • Issued: 07/19/1988
  • Est. Priority Date: 11/12/1986
  • Status: Expired due to Term
First Claim
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1. In combination with a rotary drum seed planter, a seed hopper construction comprising:

  • a hopper container having a plurality of external walls;

    blower means associated with said hopper container and having a positive pressure outlet communicating with said drum and a negative pressure opening;

    internal duct means interconnecting the interior of said hopper container with the negative pressure opening of said blower means;

    pneumatically operated valve means for controlling flow through said internal duct means;

    tube means in said hopper container having an air inlet communicating with said positive pressure outlet of said blower means and a first outlet leading into said hopper and a second outlet connected to said internal duct means; and

    valve means on said tube means operable in (1) a first position whereby positive air pressure from said blower means is directed into said hopper container to equalize the internal pressure of said container and said drum, and (2) in a second position to direct positive air pressure from said blower means to said pneumatic valve means to operate said pneumatic valve means to connect said internal duct means with said negative pressure opening of said blower means and thereby creating through said duct means a negative pressure in said container for drawing in seeds from an outside source to refill said container.

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