USRE21638E - Fertilizer and method of making - Google Patents

Description

Reissued Nov. 26, 1940 I OFFICE FERTILIZER. AND METHOD OF MAKING SAME Lewis Treeland, Kansas City, Kans. No Drawing. Original No. 2,165,592, dated July 11, 1939, Serial No; plication for reissue 353,317

8 Claims.

This invention relates to a fertilizer and the method of making the same, and consists in a fertilizer made by impregnating an absorbent granular material with certain of the more vola- .tile fertilizing ingredients, then coating said granules with a material to. seal said certain ingredients in said granules, and then intermixing this granular material in a mixture of super phosphate and black loam soil.

use of commercial fertilizers due to the fact that certain of the elements, such as nitrogen and potash, have a tendency to cause a wilting or killing of the plants. This is due principally to the l fact that too large a quantity of these ingredients are present and in direct contact with the plant. Furthermore, these ingredients. when in a free state, are quickly dissipated and lost. Other ingredients of the fertilizer are less active .0 and need not be specially treated to prevent detrimental effects and loss.

It is the purpose of this invention to overcome the above difficulties and to produce a convenient fertilizer that retains its constituent parts for a long period of time and one that will not wilt or kill the plants.

It is the principal object of the present invention to produce a fertilizer comprising a plurality of ingredients, some of which are sealed within a granular material, and others being freelyintermixed with the granules of said ma terial.

In the preparation of this fertilizer, an absorbent granular material, such as wood pulp,

saw dust, etc., is thoroughly impregnated with a substantially saturated solution of sulphate of ammonia, muriate of potash and water. After t e granules are thoroughlyimpregnated, any excess liquid is drained oil and then the granules are intermixed with a composition consisting of about 90% of mineral black, a powdered graphite, or graphite shale, and 10% of carbon'black to form a coating on the granules suitable for closing the pores of the granules to prevent rapid 5 escape ules. This coating is not entirely impervious to water, but is sufllcient to retain the chemicals and. prevent any rapid dissipation thereof, and so long as the fertilizer is in storage and not 5 subjected to the earth moisture, it will retain the granules in a substantially sealed condition for a long period of time.

This sealed and impregnated granular material is then intimately mixed with a composi- 55 t f s p r p o p ate and. black loam soil.

149,438,-June 21, 1937.

August 19, 1940, Serial No.

Much difficulty has been experienced in the,

of the chemicals retained within the gran- This composition consists of finely divided particles and serves as an absorbent for any of the moisture that might escape from the granules, and also has considerable fertilizing value.

It will be noted that within the coated gran- 5 ules the nitrogen and potash materials are encased. These ingredients, if present in too large quantities, are detrimental and cause a wilting of the plants. The phosphoric acid ingredient is freely mixed in the fertilizer and is adapted to 10 be taken up by the plants in proper quantities as needed, without any detrimental effect to the. plant when in excessive quantities.

The mineral black and carbon black not only serve as a coating for the granules, but also provide essential elements for plant life.

After long tests, the following has been found to produce a very satisfactory fertilizer for lawns. etc.: twenty-five (25) pounds of sulphate of ammonia and eight (8) pounds of murlate of go potash dissolved in water and incorporated into twenty-five (25) pounds of saw dust or wood pulp. To this impregnated saw dust is added two and one-half (2 pounds' of a composition consisting of 90% mineral black and 10% 25 carbon black. After suflicient intermixing of this composition with saw dust, a thin coating of the composition covers the granules and serves as a partial coating to retain thechemicals within the granules of saw dust. Eighteen (18) pounds 30 of superphosphate, which contains about 20% of phosphate, is thoroughly intermixed with twenty (20) pounds of any dry black loam soil. These ingredients are preferably finely ground, and are incorporated with the saw dust so as to $5 obtain a uniform composition. The carbon and mineral black, when applied to the saw dust,

' present a smooth surfaced'granule of relatively slight cohesive or adhesive property, thereby insuring a free mechanical mix of the fertilizer 40 which will remain in a free and separable state suitable for spreading over the surface of the lawn.

, For-the various uses,, fertilizers of different relative quantities of the ingredients may be used without departing from the spirit of this invention.

It will be noted that this fertilizer, among other ingredients, provides for an ample supply a of nitrogen, potash and phosphoric acid which are often found depleted in many of our soils.

An analysis of any particular soil may be made to determine which elements are most needed and the fertilizer will be made to bring it up to a given standard for proper plant nourishment.

impregnated with However. for general use, the composition set forth above is very satisfactory.

What I claim and desire to secure by Letters Patent is: v

1. A fertilizer comprising absorbent granules sulphate of ammonia and muriate of potashand coated with amixtureof substantially 90% of .mineral black and 10% of carbon black, used in an amount approximately 4% of the weightof the material being coated.

2. A fertilizer comprising substantially 25 pounds of sulphate of ammonia and 8 pounds of muriate of potash, incorporated within the granules of 25 pounds absorbent granular material;

and a surface covering on said granules consist-,

ing of a mixture of 54 pound of carbon black and 2% pounds of mineral black.

3.- The method of making a fertilizer comprising impregnating an absorbent granular material with a solution of sulphate of ammonia and muriate of potash, and intermixing and coating said impreflnated granules with a mixture of substantially'90% of mineral black and 10% of carbon black used in an amount approximately 4% of the weight of the material being coated.

. 4. The method of making ing impregnating the granules of a mass of granular material with a solution saturated with salts containing nitrogen and potassium in combined form, and intermixir-z and coating said impregnated granules with a mixture of substantially 90% of mineral black and 10% of carbon black used in an amoimt ap 4% of the weight of the material being coated.

sisting of a mixture 5. A fertilizer comprising absorbent granular material impregnated with fertilizer salts and coated with a mixture of approximately 90% mineral 'black and 10% carbon black in the proportion of approximately 4% mixture by weight of material being coated.

.6. The method 01' making a fertilizer consisting of impregnating absorbent granular material with fertilizer salts, and applying a coating on the granules of said impregnated material conof approximately 90% mineral black and 10% carbon black in the proportion of approximately 4% mixture by weight of v the impregnated material.

7. The method of making a fertilizer comprising impregnating the granules of a mass of absorbent granular material with a solution made from fertilizer salts, and applying a coating on said impregnated granules consisting of a mixture of approximately 90% mineral black and approximately 10% carbon black in the proportion of approximately 4% mixture by weight of the impregnated material.

8. A fertilizer comprising a mass of absorbent granular material in which the granules of said material are impregnated with a solution made from fertilizer salts, said imp egnated granules having coated thereon a mixture of approximately 90% mineral black and approximately 10% carbon black in the proportion of a 4% mixture by weight of the imp nated material.