Installation for assembling a number of body models of a single type of motor vehicle

An installation for assembling a number of body models for a single type of motor vehicle, the installation comprising the combination of a fixed rigid frame having means at its top for moving a number of assemblies, each assembly comprising elements for positioning and holding components of the top part of a given motor-vehicle body model, a lift at the bottom of said frame for receiving centering means co-operating with the components of a bottom part of a type of vehicle body common to a number of models, the lift being movable between two positions comprising a bottom position wherein the lift is disposed between a supply track for supplying bodies for welding and discharge track for discharging bodies after welding, the tracks being used for moving slides carrying a body for a motor vehicle and a top position wherein the body of one vehicle model engages one of the assemblies of means for positioning and holding the corresponding model of the vehicle on the lift means at the top of said fixed rigid frame for vertically moving said assemblies and hold the components of the top part of a given motor vehicle body model during welding to a body.