Abstract: An improved grain bin floor support system which utilizes a plurality of floor supports for supporting interlocking floor panels. The floor support is constructed of an upper rail for supporting floor panels, vertical members extending from the upper rail to the foundation of the bin, and a horizontal member which is attached to the vertical members and disposed between the upper rail and the base of the bin. The upper rail has a plurality of recesses and crowns between the recesses. The floor panels have a generally planar top portion and depending flanges which engage in nesting relation with the adjacent flange of the adjacent panel. The depth and spacing of the recesses along the upper rail are such that the floor panels are supported by engagement of the recesses of the upper rail against the depending flanges.

Abstract: A ridge tillage attachment includes springs associated with a linkage which guides a tool and wheel support beam for vertical movement, the springs being mounted within the linkage envelop to provide a compact arrangement and being operative to apply required forces to to a tool and wheels carried by the beam, while facilitating disassembly of the attachment when desired. The attachment also includes a structure which securely connects wheel axles to the support beam with a clamping action while being adjustable to provide a large range of relative positional values.

Abstract: Shield assemblies that are designed to be used with cultivators are disclosed. Shields are mounted to the assembly such that they are laterally rigid but vertically retractable. The shield assembly includes a paralleogram linkage system with a torque bar, to add stability, and slotted top links as well as a spring across the top and bottom link to facilitate pivotal movement of the shields. Each shield is mounted to at least two support portions; a first substantially vertical portion and a second portion which crosses the shield's main portion diagonally, thereby virtually eliminating rotation about either axis of the plane of the shield.