Fixture for use in the formation of a discharge opening of a fodder silo

Claim 1

A fixture for use in the formation of a discharge opening of a fodder silo of reinforced concrete during the placing of said concrete, which comprises a form frame which consists of a plurlity of parts which are adapted to be taken apart, said form frame being adapted to define said discharge opening during the placing of said concrete, anchors detachably connected to said form frame and adapted to carry reinforcements for reinforcing said concrete, said form frame being adapted to be disconnected from said anchors when said concrete has been placed, said anchors being adapted, when said concrete has been placed and said frame has been disconnected from said anchors, to carry mounting means for mounting a door for closing said discharge opening, each of said anchors comprising a tapped bushing having first and second ends and tapped bore portions extending from said ends, said first end engaging said form frame and said second end being connected to said reinforcement, said form frame being divided along a plurality of oblique planar interfaces, plates which bridge said interfaces, and screws that pass through said plates and form frame and detachably screw-threadedly engage in said first ends of said anchors. said tapped bore portions are portions of a continuous bore through each of said anchors.