LOCKDOWN STRUCTURE FOR AGRICULTURAL PARTICULATE TANK

A method and apparatus for use with a planting assembly including a first mounting member having first and second horizontally separated ends, the apparatus comprising first and second rigid support members that extend in the same direction from and substantially perpendicular to the first and second ends of the mounting member and that form first and second support surfaces, respectively, a hopper including first and second lower wall members that together define an upwardly facing cavity and form first and second downward and oppositely facing external surfaces, respectively, the external surfaces sloping downward toward a hopper opening along first and second trajectories, respectively, the hopper positioned on the support members such that the first and second external surfaces are received on the first and second support surfaces, respectively, the first external surface forming a first hopper coupler having an engaging length dimension along the first trajectory and a first locking member having a first locking coupler formed to be received by the first hopper coupler at various juxtapositions along the engaging length, the first locking member further including a first engager integrally formed with the first locking coupler and operable to lock the first locking coupler to the first support member.