Rhythmic aerator actuated float for indicating water level

Claim 1

AN AQUATIC DEVICE FOR CONTINUOUSLY RISING AND SUBMERGING IN RHYTHMIC FASHION WITHIN A BODY OF WATER COMPRISING (A) MEANS DEFINING A GUIDE LINE, (B) MEANS CONNECTED TO SAID GUIDE LINE FOR MAINTAINING IT TAUT IN SAID BODY OF WATER, (C) MEANS DEFINING A HOLLOW BODY PROVIDED WITH AN INLET FORMED ON THE UNDERSURFACE OF SAID BODY AND AN EXHAUST PORT SPACED THEREFROM TO EFFECT CONTROL FLOODING OF SAID HOLLOW BODY TO REGULATE THE BUOYANCY THEREOF, SAID BODY HAVING MEANS FOR GUIDING SAID BODY ALONG SAID GUIDE MEANS WHEN PLACED IN WATER, (D) AND MEANS LOCATED IN SAID BODY OF WATER IN ALIGNMENT WITH THE INLET OF SAID BODY IN THE SUBMERGED POSITION OF SAID BODY FOR INTRODUCING A LIGHTER THAN WATER GAS INTO SAID BODY THROUGH SAID INLET TO RENDER SAID BODY BUOYANT BY DISPLACING THE WATER THEREIN THROUGH SAID EXHAUST PORT SO THAT SAID BODY WILL FLOAT TOWARD THE SURFACE OF SAID WATER ALONG SAID GUIDE MEANS, AND SAID BODY THEREAFTER TAKING IN WATER THROUGH SAID GAS INLET WHEREBY SAID AIR IS EXHAUSTED THROUGH SAID EXHAUST PORT CAUSING THE SAME TO SUBMERGE IN POSITION TO AGAIN RECEIVE SAID GAS TO REPEAT THE CYCLE, AND SAID CYCLE CEASING WHEN SAID GUIDE LINE SLACKENS.