Device for automatically watering plant containers

Details Device for automatically watering plant containers Device for automatically watering plant containers

1978-09-15

1980-12-30

Bratlie, Steven A.

Plant husbandry

Receptacle for growing medium

Irrigator

119 81, 137408, 177117, 251 9, A01G 2700

Patent

active

042415381

ABSTRACT:
A pair of lever arms are hinged together at one end and disposed beneath a plant container, compression spring being disposed between the other ends of said lever arms and a flexible water supply hose being sandwiched between said lever arms intermediate their ends. Thus, when the soil in the container is dry and thus light, the spring opens the arms and allows water to flow through the hose to the soil; when the soil is moist, and thus heavy, its weight overcomes the force of the spring and compresses the hose to cut off the supply of water.

REFERENCES:
patent: 391816 (1888-10-01), Packard
patent: 1033308 (1912-07-01), Fish
patent: 1876988 (1932-09-01), Lormor
patent: 2828935 (1958-04-01), Ziegler et al.
patent: 3168797 (1965-02-01), Patassy

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