Plant moisture indicator

Details Plant moisture indicator Plant moisture indicator

1976-05-19

1977-05-03

Queisser, Richard C.

Signals and indicators

Alarms

Fluid flow

73 73, G01N 2556, G01N 3324

Patent

active

040207854

ABSTRACT:
A plant moisture indicator is provided comprising a piece of wood cut across the grain with a moisture retardant substance applied to one side of the indicator, whereby the indicator will tend to bend in the presence of moisture and straighten up when dry. Preferably the device is constructed in the form of a U having two such opposed members, whereby the U will close in the presence of moisture and open in the absence of moisture.

REFERENCES:
patent: 1219390 (1917-03-01), Grigsby
patent: 1920502 (1933-08-01), Goss
patent: 3019638 (1962-02-01), Klein
patent: 3555216 (1971-01-01), Fenner
Publ. The Divining Rod by Arthur J. Ellis, 1917, U.S. Geological Survey (Dept. of Interior), pp. 7-10.
Publ. "New Wood-Element Hygrostat" by October Issue 1933, Scientific American p. 183.

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