FERTILIZER APPLICATOR

• US 3,863,842 A
• Filed: 04/11/1974
• Issued: 02/04/1975
• Est. Priority Date: 04/11/1974
• Status: Expired due to Term

• Current Assignee: David L. Mcfarland, Raymond J. Mcfarland
• Original Assignee: David L. Mcfarland, Raymond J. Mcfarland
• Inventors: McFarland, David L., McFarland, Raymond J.
• Primary Examiner(s): Wood, Jr., M. Henson
• Assistant Examiner(s): Love, John J.
• Application Number:
  US05/460,117
• Time in Patent Office: 299 Days
• Field of Search: 239/283,598,601 47/1.7 111/6,7,7.4
• US Class Current: 239/283
• CPC Class Codes: A01B 25/00 Harrows with special additional arrangements, e.g. means for distributing fertilisers; Harrows for special purposes A01B39/00 takes precedence ; fertiliser distributors A01C15/00
• CPC Class Codes: A01C 23/025 Continuous injection tools

Abstract

A fertilizer applicator for mounting on a cultivator or similar earthworking tool. The applicator is particularly suited for dispensing gaseous fertilizers, most typically, anhydrous ammonia, and has features that eliminate plugging and increase durability.

Claims

1. A fertilizer applicator comprising:

a tubular elongated stem having a longitudinal passage;

a tubular manifold extending transversely to the elongated stem, having a longitudinal passage therein in communication with the longitudinal passage of the elongated stem, and a countersunk aperture extending transversely through the tubular wall of the manifold from the passage therein to the exterior thereof;

a mounting plate secured to the elongated stem and the tubular manifold.

2. The fertilizer applicator of claim 1 wherein the inside diameter of the countersunk aperture is in the range of one-eighth to one-fourth inch.

3. The fertilizer applicator of claim 1 wherein the wall thickness of the tubular manifold is in the range of one-sixteenth to three-sixteenths inch.

4. The fertilizer applicator of claim 1 wherein the included angle of the countersunk aperture is in the range of 60*-90*.

5. The fertilizer applicator of claim 1 wherein the countersunk aperture extends in a direction transverse to the axis of the elongated stem and the axis of the tubular manifold.