Support in ships of tanks designed to carry low temperature liquids

Claim 1

THE COMBINATION IN A SHIP OF A CARGO TANK TO CONTAIN BULK LOW TEMPERATURE LIQUID AND A TANK MOUNTING TO CONSTRAIN SAID TANK FROM LATERAL BODILY MOVEMENT WITH RESPECT TO THE SHIP WHILE LEAVING THE TANK FREE TO EXPAND AND CONTRACT THERMALLY, COMPRISING TWO SERIES OF STOOLS ANCHORED ON THE SHIP''S INNER BOTTOM IN ROWS EXTENDING IN TWO HORIZONTAL DIRECTIONS AT AN ANGLE TO EACH OTHER AND DIAMETRICALLY OF THE BOTTOM OF THE TANK THEREBY TO CONSTITUTE TWO DISCONTINUOUS KEYS, EACH STOOL HAVING SIDE FACES THAT ARE EACH INCLINED TO THE VERTICAL AT AN ANGLE OF ABOUT 35 TO 40* WHEREBY SAID DISCONTINUOUS KEYS CONSTITUTED BY SAID STOOLS EACH HAVE SIDES THAT CONVERGE UPWARDLY TOWARD A KEY APEX, TWO SERIES OF TUNNEL-FORM BRACKETS SECURED TO THE UNDERSIDE OF SAID TANK IN TWO HORIZONTAL ROWS PARALLEL TO AND IN SUBSTANTIAL ALIGNMENT VERTICALLY WITH SAID KEYS AND HAVING DOWNWARDLY-OPENING RECESSES WITH SIDES THAT DIVERGE DOWNWARDLY, SAID RECESSES BEING IN ALIGNMENT ALONG THE ROWS TO DEFINE TWO KEYWAYS HAVING DOWNWARD DIVERGENCE CORRESPONDING TO THE UPWARD CONVERGENCE OF SAID KEYS, EACH ROW OF SAID TUNNEL-FORM BRACKETS BEING DIRECTLY OVER A RESPECTIVE ONE OF SAID KEYS WITH AN UPPER PORTION OF THE KEY INCLUDING THE APEX THEREOF ENTERING THE KEYWAY DEFINED GY SAID ROW, ANTIFRICTION BALL MEANS MOUNTED ON SAID INCLINED SIDE FACES OF SAID STOOLS JUST BELOW THE APICES THEREOF, AND HARD PLATES SECURED TO SAID DIVERGING SIDES OF THE RECESSES OF SAID TUNNEL-FORM BRACKETS WHICH PLATES BEAR ON SAID ANTIFRICTION BALL MEANS AND TRANSMIT LATERAL AND VERTICAL FORCES BETWEEN THE TANK AND SAID STOOLS.