Knockdown distillation apparatus

Claim 1

IN A STILL, A COLUMNAR STILL ASSEMBLY INCLUDING ALIGNED UPPER AND LOWER COLUMN MEMBERS AND A PLURALITY OF SEPARATELY MOUNTED FLOW FITTINGS ONE INTERMEDIATE SAID COLUMN MEMBERS AND OTHERS AT THE UPPER END OF SAID UPPER COLUMN MEMBER AND AT THE LOWER END OF SAID LOWER COLUMN MEMBER, SAID LOWER COLUMN MEMBER FORMING AN EVAPORATING CHAMBER AND SAID UPPER COLUMN MEMBER FORMING A CONDENSING CHAMBER, SAID INTERMEDIATE FITTING FORMING A JOINT RING BETWEEN SAID COLUMN MEMBERS AND HAVING A FEED INLET FOR LIQUID MATERIAL TO BE DISTILLED AND FURTHER HAVING A VAPOR PASSAGE BETWEEN SAID CHAMBERS AND A LIQUID OUTLET FROM THE CONDENSING CHAMBER, SAID RING-FORMING INTERMEDIATE FITTING FURTHER HAVING AN ANNULAR PORTION PROJECTING DOWNWARDLY INTO SAID LOWER COLUMN MEMBER AND PROVIDED WITH AN OUTWARDLY FACING PERIPHERAL LIQUID-RECEIVING GROOVE COMMUNICATING WITH SAID FEED INLET AND DISPOSED ADJACENT TO THE INNER WALL OF SAID LOWER COLUMN MEMBER, AND SAID LOWER FITTING HAVING A LIQUID OUTLET FOR SAID EVAPORATING CHAMBER.