Frame straightening device

A structure for use in automotive collision repair comprising a support frame of peripheral support members, at least one work beam extending across and moveable transversely of opposing ones of said support members, work beam mounting means for mounting one end of said work beam to one of said support members with the other end of the work beam supported at the opposing support member such that said work beam is slideable relative to said support frame of said structure and adjustable to different working angles relative to said support members, a work beam adjustment for adjusting movement of said work beam transversely of the support members, and mounting means for mounting said work beam adjustment on said one of said support members in a manner such that said work beam adjustment is correspondingly slideable with said work beam along said structure, said work beam adjustment comprising a piston member for applying pressure on said work beam and said mounting means for said work beam adjustment comprising a saddle assembly slideable along said one of said support members and having a rotatable coupling for receiving said piston which is rotatable to different transverse angles with respect to said work beam.