Ingot

Claim 1

A STACK OF INGOTS COMPRISED OF LAYERS OF INGOTS WITH EACH OF SAID LAYERS HAVING A PLURALITY OF ALTERNATELY INVERTED SIMILAR INGOTS DISPOSED IN SIDE-BY-SIDE RELATIONSHIP WITH ADJACENT INGOTS IN INTERLOCKED ENGAGEMENT WITH ONE ANOTHER, EACH OF SAID INGOTS COMPRISING AN ELONGATED CAST BAR OF QUADRILATERAL CROSS-SECTION HAVING A PAIR OF SUBSTANTIALLY FLAT PARALLEL UPPER AND LOWER SURFACES, A LATERAL BERM PROJECTING FROM EACH OF THE SIDE WALLS OF SAID BAR AND COEXTENDING WITH EACH OTHER LONGITUDINALLY ALONG A PAIR OF ADJACENT LATERAL EDGES OF SAID BAR DEFINING THE LOWER SURFACE THEREOF, ONE OF SAID BERMS HAVING AN UPPER SURFACE SYMMETRICALLY BOWED UPWARDLY TOWARD SAID UPPER BAR SURFACE AT THE MID-POINT OF SAID BERM WITH SAID UPPER BERM SURFACE FURTHER DEFINING AN ACUTE ANGLE WITH ITS ADJACENT CORRESPONDING SIDE WALL OF SAID BAR WHEREBY SAID UPPER BERM SURFACE FORMS A COMPOUND ANGLE WITH SAID SIDE WALL, AND THE OTHER OF SAID BERMS HAVING AN UPPER BERM SURFACE SYMMETRICALLY BOWED DOWNWARDLY TOWARD SAID LOWER BAR SURFACE TO A LOW POINT RELATIVE TO SAID UPPER BAR SURFACE AT THE MID-POINT OF SAID OTHER BERM WITH THE LAST SAID UPPER BERM SURFACE DEFINING SAID ACUTE ANGLE WITH ITS ADJACENT CORRESPONDING SIDE WALL OF SAID BAR WITH THE LAST SAID BERM BEING DISPOSED IN INTERLOCKED RELATIONSHIP WITH A BERM CORRESPONDING TO THE FIRST BERM ON AN ADJACENT INVERTED SIMILAR BAR DISPOSED IN SIDE-BY-SIDE RELATIONSHIP IN SAID LAYER OF SAID STACK.