Liquid level switch having lanyard rotating means

Claim 1

A SWITCH FOR SIGNALING THE LEVEL OF A LIQUID, COMPRISING AN ANNULAR HOUSING FLOATING ON SAID LIQUID SO AS TO MOVE WITH THE LEVEL THEREOF, EYE MEANS SECURED TO THE EXTERIOR OF SAID HOUSING INTERMEDIATE THE TOP AND BOTTOM THEREOF, AN ELECTRICAL CABLE EXTENDING FROM THE INTERIOR OF SAID HOUSING TO THE EXTERIOR THEREOF THROUGH THE TOP OF SAID HOUSING, AN UPPER LANYARD HAVING ITS UPPER END SECURED TO SAID CABLE EXTERIORLY OF SAID HOUSING THERBY RESTRAINED INDEPENDENTLY OF SAID HOUSING AND ITS LOWER END SECURED TO SAID EYE MEANS TO EXERT A PULL THEREUPON AND A CORRESPONDING ROTATION OF SAID HOUSING IN THE UPPER DIRECTION UPON A PREDETERMINED FALL OF THE LEVEL OF SAID LIQUID, A WEIGHT SECURED TO THE PERIPHERY OF SAID HOUSING TO ROTATE SAID HOUSING IN THE OPPOSITE DIRECTION UPON A PREDETERMINED RISE IN THE LEVEL OF SAID LIQUID, AN ELONGATED CONTAINER POSITIONED WITHIN SAID HOUSING AND CONTAINING AN ELECTRICALLY CONDUCTING FLUID MEDIUM FOR ALTERNATELY PASSING FROM END-TO-END OF SAID CONTAINER UPON ROTATION OF SAID HOUSING IN SAID UPPER DIRECTION AND IN SAID OPPOSITE DIRECTION, AND ELECTRIC CIRCUIT MEANS INCLUDING A PAIR OF SPACED ELECTRODES CONNECTED TO SAID CABLE ON THE INTERIOR OF SAID HOUSING AND POSITIONED AT ONE END OF SAID CONTAINER FOR CIRCUIT COMPLETION BY SAID ELECTRICALLY CONDUCTING FLUID MEDIUM.