Demountable and returnable bulk bin

Claim 1

A BULK BIN COMPRISING A BOTTOM AND DEMOUNTABLE SIDES, SAID SIDES BEING CONNECTED WITH BOTH THE BOTTOM AND WITH EACH OTHER WHEN MOUNTED ON THE BOTTOM AND BEING FREE OF CONNECTION WITH THE BOTTOM AND EACH OTHER WHEN DEMOUNTED THEREFROM, SAID SIDES HAVING CLEATS AT THEIR LOWER MARGINS WITH PORTIONS WHICH PROJECT LATERALLY THEREFROM AT THE CORNERS OF THE BIN, SAID BOTTOM BEING PROVIDED WITH FIXED CORNER BRACKETS HAVING FLANGE PORTIONS DISPOSED IN A SLIGHTLY SPACED OVERHANGING RELATION TO THE PROJECTING PORTIONS OF THE CLEATS AT THE BIN CORNERS TO INTERLOCK MECHANICALLY THEREWITH TO PRECLUDE VERTICAL SEPARATION OF THE SIDES FROM THE BOTTOM, SAID BRACKETS BEING RELIEVED AT CORRESPONDING SIDES THEREOF IN LATERAL ALIGNMENT WITH THE PROJECTING PORTIONS OF THE CLEATS, AND SEVERABLE BANDS WITH ENCIRCLE THE SIDES OF THE BIN TO PRECLUDE LATERAL SEPARATION OF THE SIDES AND MAINTAIN SAID INTERLOCK WHEN THE SIDES ARE MOUNTED ON THE BOTTOM, SAID SIDES BEING FREE TO MOVE LATERALLY WHEN THE BANDS ARE SEVERED TO MOVE THE SAID PROJECTING CLEAT PORTIONS LATERALLY THROUGH THE RELIEVED PORTIONS OF THE BRACKETS AND OUT OF INTERLOCKED RELATION TO THE BRACKET FLANGES FOR DEMOUNTING THE SIDES WITH RESPECT TO THE BOTTOM.