Plant husbandry – Plant irrigators and/or fertilizers – apparatus or method
Patent
1983-07-28
1986-04-01
Hafer, Robert A.
Plant husbandry
Plant irrigators and/or fertilizers, apparatus or method
239 63, A01G 2900
Patent
active
045788979
ABSTRACT:
A plant watering and/or feeding unit automatically and periodically dispenses water as needed. As assembled, an air tube extends essentially throughout the central length of a selected plastic bottle and beyond the other wise sealed cap entry of this plastic bottle for insertion of the extending, first heat sealed then partially cut opened, air tube end, down through the soil without being blocked by any entering soil, to contact the bottom of the earth filled plant container. A liquid orifice is located in the plastic bottle in its shoulder about midway between the entry and the side of the bottle.
During plant watering and/or feeding cycles, liquid drips from the liquid orifice in the shoulder, until the water table in the soil, i.e. the liquid level in the soil, rises above the end of the partially opened air tube to seal off the entry of air. Then the dripping of liquid stops, until this liquid level goes below the end of the partially opened air tube. With the liquid seal broken once again the vacuum volume above the liquid level in the bottle becomes a pressure air volume, and liquid drips out the orifice and into the soil. This cycle continues until the prefilled volume of watering and/or feeding liquid is depleted.
REFERENCES:
patent: 1842687 (1932-01-01), Reynolds
patent: 2519166 (1950-08-01), White
patent: 2595782 (1952-05-01), Epstein
patent: 2837869 (1958-06-01), Chatten
patent: 3125255 (1964-03-01), Kaiser
patent: 3438575 (1969-04-01), Rohling
patent: 3754352 (1973-08-01), Bates
patent: 3856205 (1974-12-01), Rohling
patent: 4148155 (1979-04-01), Allen
patent: 4223837 (1980-09-01), Gubbiotti
Pazar Robert A.
Petrich David B.
DeMille Danton
Hafer Robert A.
Mattern Jr. Roy E.
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