Diving machine with gas ballast tank

Claim 1

A DIVING MACHINE FOR PENETRATING TO A GIVEN DEPTH IN WATER HAVING A NATURAL TEMPERATURE, COMPRISING IN COMBINATION: (A) AS LIFT DEVICE, AT LEAST ONE CHAMBER CONTAINING A GAS IN VARIABLE VOLUME, SAID CHAMBER BEING ADAPTED TO MAINTAIN THE GAS IN PRESSURE EQUILIBRIUM WITH THE WATER; (B) STORAGE MEANS CONTAINING A SUBSTANTIAL QUANTITY OF GAS UNDER REDUCED VOLUME AND IN A PHYSICAL STATE SUCH THAT IT HAS A NATURAL TENDENCY TO INCREASE ITS VOLUME WHEN THE GAS UNDER REDUCED VOLUME IS SUBJECTED TO THE NATURAL TEMPERATURE OF THE WATER AND TO A PRESSURE WHICH MAY REACH THE PRESSURE OF THE WATER AT THE GIVEN DEPTH; (C) A DEVICE FOR CONTROLLING THE SUBMERSION BY CONTROLLING THE VOLUME OF GAS IN THE CHAMBER, COMPRISING MEANS FOR DRAWING GAS FROM THE CHAMBER, REDUCING ITS VOLUME AND DELIVERING IT TO THE STORAGE MEANS AND MEANS FOR WITHDRAWING GAS UNDER REDUCED VOLUME FROM THE STORAGE MEANS, INCREASING ITS VOLUME AND DELIVERING IT TO THE CHAMBER, AND (D) A SAFETY DEVICE FOR PLACING THE STORAGE MEANS IN COMMUNICATION WITH THE CHAMBER AT LEAST WHEN SAID SUBMERSION CONTROL DEVICE IS DAMAGED.