Plant husbandry – Plant surface contact material applicator
Patent
1984-08-02
1986-07-01
Feyrer, James R.
Plant husbandry
Plant surface contact material applicator
A01M 2100
Patent
active
045972192
ABSTRACT:
A vacuum/gravity feed contact herbicide applicator includes a wicking head and an elevated container for gravity feeding herbicide liquid via an internal generally vertical conduit into the head. The container and conduit are sealed to maintain a partial vacuum. The wicking head is structured so that the liquid rises in a generally vertical internal passageway to a level limit by the partial vacuum such that the liquid does not overflow from an outlet opening of the passageway in an upper side of the wicking head. A first wicking material is disposed in the passageway for drawing the liquid upward through the outlet opening for transfer to a second wicking material surrounding the wicking head and covering the outlet opening. The wicking material is non-woven fibrous rayon fabric material impervious to air when saturated but pervious when unsaturated, to control passage of air into the wicking head and spillage of liquid from same. The conduit and passageway communicate through a single internal opening constricted so that the liquid and air interferingly counterflow therethrough to regulate the flow of air back into the container and thereby the flow of liquid into the wicking head passageway.
REFERENCES:
patent: 604562 (1898-05-01), Evetts
patent: 634109 (1899-10-01), Hitchcock
patent: 3076436 (1963-02-01), Newsome
patent: 4027986 (1977-06-01), Patrick
patent: 4291491 (1981-09-01), Maddock
patent: 4305224 (1981-12-01), Maddock
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patent: 4369596 (1983-01-01), Hartford
patent: 4403881 (1983-09-01), Keeton
patent: 4409755 (1983-10-01), Maddock
patent: 4426807 (1984-01-01), Maddock
Weed Wiper Super-7, catalogue of Century Engineering, Cedar Rapids, Iowa, p. 19.
Feyrer James R.
Smucker Lee A.
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