Breathing pack for converting liquid air or oxygen into breathable gas

Claim 1

IN A PORTABLE PACK FOR CONVERTING LIQUID AIR OR OXYGEN INTO GASEOUS FORM FOR BREATHING USE IN WORK WHERE THE PACK IS SUBJECT TO BEING HELD IN VARIOUS POSITIONS, THE COMBINATION COMPRISING A CONTAINER FOR A BODY OF SAID LIQUID AND FOR A HEAD OF GAS EVOLVED FROM SAID LIQUID AND HAVING A SIDE WALL SHELL ENCLOSED BY UPPER AND LOWER END HEADS, AN OPEN-ENDED LIQUID OUTLET TUBE MOVABLY MOUNTED IN THE BOTTOM OF SAID CONTAINER, AN OPEN-ENDED GAS PRESSURIZING TUBE MOVABLY MOUNTED IN THE TOP OF SAID CONTAINER, A LIQUID OUTLET CONDUIT COMMUNICATING WITH SAID LIQUID OUTLET TUBE, MEANS CONVERTING THE LIQUID IN SAID LIQUID OUTLET CONDUIT INTO GAS FOR BREATHING PURPOSES, A GAS PRESSURIZING CONDUIT COMMUNICATING WITH SAID GAS PRESSURIZING TUBE, MEANS CONVERTING A PART OF THE LIQUID IN SAID LIQUID OUTLET CONDUIT INTO GAS AN CONDUCTING SUCH GAS TO SAID GAS PRESSURIZING CONDUIT, AND MEANS ACTUATED BY GRAVITY TO MOVE THE OPEN END OF SAID LIQUID OUTLET TUBE TO ITS LOWEST POSITION AND THE OPEN END OF SAID GAS PRESSURIZING TUBE TO ITS HIGHEST POSITION WITHIN SAID CONTAINER, WHEREBY IN ANGULAR POSITIONS OF SAID CONTAINER WITH REFERENCE TO THE VERTICAL, THE GAS PRESSURIZING TUBE WILL DISCHARGE GAS INTO SAID GAS HEAD AND THEREBY AVOID RECONDENSING SAID GAS INTO SAID BODY OF LIQUID AND WHEREBY IN ALL SUCH ANGULAR POSITIONS OF SAID CONTAINER SAID LIQUID OUTLET TUBE WILL EXPEL A LARGE TOTAL QUANTITY OF SAID LIQUID.