Buckstay arrangement for vapor generators and the like

Claim 1

A VAPOR GENERATOR OR THE LIKE COMPRISING: A FIRST PAIR OF OPPOSITELY DISPOSED VERTICAL WALLS; A SECOND PAIR OF OPPOSITELY DISPOSED VERTICAL WALLS EXTENDING BETWEEN SAID FIRST PAIR OF WALLS AND JOINED THERETO TO DEFINE A CHAMBER FOR HOT GASES; BUCKSTAYS EXTENDING TRANSVERSELY ADJACENT EACH OF SAID WALLS, EACH OF SAID BUCKSTAYS HAVING END PORTIONS WHICH EXTEND BEYOND THE ENDS OF THE CORRESPONDING WALL; MEANS SUPPORTING SAID BUCKSTAYS IN A SPACED RELATIONSHIP TO SAID WALLS, SAID SUPPORTING MEANS INCLUDING MEANS TO PERMIT DIFFERENTIAL TRANSVERSE THERMAL EXPANSION BETWEEN SAID WALLS AND SAID BUCKSTAYS; A FIRST PAIR OF TENSION RODS HAVING A CIRCULAR CROSS SECTION AND EXTENDING ADJACENT SAID FIRST PAIR OF WALLS AND CONNECTED TO THE CORRESPONDING END PORTIONS OF THE BUCKSTAYS ADJACENT SAID SECOND PAIR OF WALLS; AND A SECOND PAIR OF TENSION RODS EXTENDING ADJACENT SAID SECOND PAIR OF WALLS AND CONNECTED TO THE CORRESPONDING END PORTIONS OF THE BUCKSTAYS ADJACENT SAID FIRST PAIR OF WALLS, SAID FIRST PAIR OF TENSION RODS AND SAID SECOND PAIR OF TENSION RODS LYING IN A COMMON PLANE; AND TURNBUCKLE MEANS ON SAID TENSION RODS TO PERMIT CROSSING OF SAID TENSION RODS IN SAID COMMON PLANE ADJACENT THE JUNCTION OF SAID FIRST AND SECOND VERTICAL WALLS.