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Cold flow liquid vapor shoe

  • US 4,116,139 A
  • Filed: 05/19/1977
  • Issued: 09/26/1978
  • Est. Priority Date: 05/19/1977
  • Status: Expired due to Term
First Claim
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1. A shoe for use with an earth plow having at least one chisel blade mounted upon a chisel shank and adapted to move through field earth so as to create a trench, the shoe comprising means for applying and at least temporarily holding ammonia in the soil, the means including, a vapor tube for receiving ammonia vapor, a vapor tube orifice defined in the vapor tube for dispensing the received ammonia vapor, a liquid tube for receiving ammonia liquid, and a liquid tube orifice defined in the liquid tube and located above and to the rear of the vapor tube orifice for dispensing liquid ammonia in a path that intersects from above the path of discharge of the previously dispensed ammonia vapor as the plow chisel moves through the ground and forms the trench, so as to encourage the liquid ammonia to act as a fluid blanket to the ammonia vapor and to discourage vapor escape from the trench before the liquid and vaporous ammonia are covered by field earth.

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