Stabilization means for storage tanks

Claim 1

IN THE STORAGE AND TRANSPORATION OF A MATERIAL HAVING A TEMPERATURE DIFFERING WIDELY FROM AMBIENT TEMPERATURE, A CONTAINER OF LARGE CAPACITY HAVING A RELATIVELY FLAT BOTTOM, MEANS FOR MOUNTING SAID CONTAINER WITHIN A SUPPORTING STRUCTURE IN A MANNER TO STABILIZE THE POSITION OF THE CONTAINER WITHIN THE SUPPORTING STRUCTURE WHILE PERMITTING FREE EXPANSION AND CONTRACTION DUE TO TEMPERATURE CHANGE, COMPRISING A FLOORING FORMING A PART OF THE SUPPORTING STRUCTURE HAVING A RELATIVELY FLAT TOP SURFACE UPON WHICH THE CONTAINER RESTS, AN ELONGATED KEY MEMBER EXTENDING UPWARDLY FROM THE SURFACE OF THE FLOOR TO EXTEND LENGTHWISE OF THE CONTAINER, A PAIR OF ELONGATED MEMBERS SECURED TO THE BOTTOM OF THE CONTAINER IN ALIGNMENT WITH THE KEY MEMBER AND SPACED ONE FROM THE OTHER LATERALLY BY AN AMOUNT CORRESPONDING TO THE WIDTH OF SAID KEY MEMBER TO FORM A KEYWAY DIMENSIONED SLIDABLY TO RECEIVE THE KEY MEMBER THEREBETWEEN WHEN THE CONTAINER IS PROPERLY POSITIONED WITHIN THE SUPPORTING STRUCTURE, AND A SPACER BETWEEN THE BOTTOM WALL OF THE CONTAINER AND THE SUPPORTING FLOOR DIMENSIONED TO HAVE A THICKNESS GREATER THAN THE MAXIMUM THICKNESS OF ANY ONE OF THE MEMBERS INCLUDING THE KEY AND KEYWAY BUT LESS THAN THE SUM OF THE THICKNESSES THEREOF WHEREBY THE KEY WILL BE RECEIVED WITHIN THE KEYWAY WITHOUT ENGAGEMENT WITH THE BOTTOM WALL OF THE CONTAINER AND WITHOUT THE KEYWAY ENGAGING THE SURFACE OF THE FLOOR WHEN IN THE ASSEMBLED RELATIONSHIP.