Moisture control apparatus

Details Moisture control apparatus Moisture control apparatus

1982-01-22

1984-02-14

Feyrer, James R.

Plant husbandry

Receptacle for growing medium

Irrigator

A01G 902

Patent

active

044308299

ABSTRACT:
Apparatus for controlling moisture content in soil having a first fabric to be immersed in a water reservoir and to move into and out of contact with a second fabric to transfer moisture to the second fabric and then to an absorbent fabric underlying the soil. Movement of the first fabric into and out of contact with the second fabric to control moisture content in the soil is controlled by a lever which hangs downwardly from a pivot and holds the first fabric at its lower end. The lever is urged in one direction to break contact between the first and second fabrics, by a biassing means. It is urged in the other direction to renew the contact by the pulling action of a moisture-responsive stretchable and shrinkable material which shrinks during drying of the upper regions of soil and so creates the pulling force.

REFERENCES:
patent: 2445717 (1948-07-01), Richards
patent: 2651884 (1953-09-01), Werner
patent: 3117442 (1964-01-01), Brooks
patent: 3261125 (1966-07-01), Arkebauer
patent: 3512712 (1970-05-01), Benesch

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