Expandable irrigation signal

Details Expandable irrigation signal Expandable irrigation signal

1975-05-27

1976-06-01

Swisher, S. C.

Signals and indicators

Alarms

Fluid flow

116DIG7, G01F 2308

Patent

active

039601072

ABSTRACT:
An irrigation signal which has a cylindrical body to receive a cylindrical float, the body having an upper portion and a lower portion, the lower portion being adapted to extend below the bottom of the irrigation ditch in which it is installed in order to form a well in which irrigation water may enter in order to raise said float. A signal connected to said float by a rod is positioned in the top of the body, and upon the raising of said float is pushed from the top of said body and automatically extends to be plainly visible from a distance to signal that irrigation water is present in said ditch. When irrigation is stopped the water will drain from the lower end of the body so that the signalling float will lower and exert a downward pull on the signal. The signal will collapse and be pulled into the top end of the body into nonsignalling position.

REFERENCES:
patent: 1138285 (1915-05-01), Green
patent: 2082763 (1937-06-01), Garrison
patent: 2607835 (1952-08-01), Bonar

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