Solar still

Claim 1

PURIFICATION APPARATUS COMPRISING CONTAINER MEANS AT A PREDETERMINED ELEVATION FOR CONTAINING A SUPPLY OF LIQUID TO BE PURIFIED, A FIRST CONDUIT SECTION, A SECOND CONDUIT SECTION POSITIONED ABOVE THE FIRST CONDUIT SECTION, A CONDUIT SECTION JOINING SAID SUPPLY CONTAINER TO THE INLET END OF THE FIRSTT CONDUITT SECTION, A CONDUIT SECTION JOINING THE OUTLET END OF THE FIRST CONDUIT SECTION WITH THE INLET END OF THE SECOND CONDUIT SECTION AN UPWARDLY EXTENDING EVAPORATION ENCLOSURE MEANS ABOUT SAID SECOND CONDUIT, AN OUTLET OPENING OF PREDETERMINED CROSS SECTIONAL AREA IN SAID SECOND CONDUIT SECTION WITHIN SAID ENCLOSURE MEANS, A SIPHON DEVICE HAVING AN INTAKE WITHIN SAID EVAPORATION ENCLOSURE BELOW THE LEVEL OF SAID OUTLET OPENING IN SAID CONDUIT THEREIN, THE SIPHON INTAKE HAVING A GREATER CROSS SECTIONAL AREA THAN SAID OUTLET OPENING, WHEREBY THE SIPHON DEVICE EXTRACTS ALTERNATE QUANTITIES OF LIQUID AND VAPOR FROM SAID EVAPORATION ENCLOSURE, A HOUSING INTO WHICH SAID SIPHON EMPTIES, A VAPOR OUTLET CONDUIT FROM SAID HOUSING, A DOWNWARDLY EXTENDING CONDENSATION ENCLOSURE ABOUT SAID FIRST CONDUIT, THE VAPOR OUTLET CONDUIT FROM SAID HOUSING COMMUNICATIONG WITH SAID CONDENSATION ENCLOSURE, AND A DISCHARGE OPENING FROM THE CONDENSATION ENCLOSURE AT A POINT BELOW THE ENTRY THEREINTO OF SAID VAPOR OUTLET CONDUITT, THE ARRANGEMENT BEING SUCH THAT SAID SIPHON MEANS WILL WITHDRAW LIQUID FROM SAID EVAPORATION ENCLOOSURE MORE RAPIDLY THAN LIQUID ENTERS SAME, THEREBY REDUCING THE VAPOR PRESSURE WITHIN SAID EVAPORATION ENCLOSURE AND ENHANCING EVAPORATION, AND THE VAPOR EXPELLED FROM SAID SPHON MEANS IS COOLED BY INCOMING LIQUID IN SAID FIRST CONDUIT WITHIN SAID CONDENSATION ENCLOSURE TO ENHANCE THE CONDENSATION OF SAID VAPOR TO PRODUCE PURIFIED LIQUID WITHIN THE LATTER ENCLOSURE.