Corner clamp assembly

A clamp assembly for joining adjacent parts, each part having lateral and transverse wall elements defining an interior space, comprising:

• a first plate having at least two opposite lateral edges extending therealong in a common plane, said plate having at least one recess formation therein with an entrance located on an axis lying between said edges and extending substantially normal to said plane;
• a separate second plate having at least two opposite lateral edges extending therealong in a common plane and disposed for substantial registry with said edges of said first plate when said second plate is superposed therewith, said second plate having at least one threaded aperture located on an axis lying between said edges of said second plate and extending substantially normal to said plane of said second plate;
• and
• at least one jacking screw threadably engaged in said aperture of said second plate, said screw having a tip formation at one end and means for turning at the other end, at least one of said tip and recess formations being defined by a bevelled camming surface;
• said recess formation and said aperture being disposed such in spatial relationships to said edges of said respective plates as to cause said axes to be mutually offset when said plates are in superposed relationship with said edges of said plate in such registry, and said spatial relationships also causing a surface element of said other formation to be so disposed as to engage said camming surface of said one formation in said superposed plate relationship, advancement of said screw against said camming surface effecting transverse separation as well as shifting of said plates relative to one another in said common planes to offset said edges of said first plate relative to said edges of said second plate whereby, when said assembly is contained within the interior spaces of adjacent parts having lateral and transverse wall elements defining those spaces, advancement of said screw will cause said plates to exert clamping forces upon both the transverse and also the lateral wall elements of the parts, to join them to one another.