Abstract: A pull clamp is provided for attaching to sheet metal flanges for transmission of pulling forces to the sheet metal, particularly in collision repair operations. The clamp comprises a pair of opposed clamping jaws adapted to be tightened against each other by bolts and have at one end opposite clamping surfaces for engagement with the sheet metal flange, the jaws furthermore enclosing a connecting member for coupling to a pulling means, said member including a conical wedge element for exerting a spreading-apart action of the inner surfaces of the jaws and hence through the bolts increase the clamping force between the clamping surfaces of the jaws in proportion to the pull of the pulling means.

Abstract: A method for the repair of damaged vehicle body structure by mounting the vehicle upon frame apparatus of the type adapted for applying forces to selected portions of the damaged vehicle body to restore the vehicle body and/or frame to its original configuration and for concurrently making measurements relative to selected datum points. A plurality of parallel, generally horizontal spaced rigid supporting beams are secured to the underside of the vehicle body, transverse to the longitudinal axis of the vehicle. The vehicle is raised with the transverse beams secured thereto a sufficient distance to permit the insertion underneath said transverse beams of a rigid substantially rectangular frame whose width is less than the length of the transverse beams and whose length exceeds that of the vehicle body.

Abstract: A scissors jack for raising motor vehicles and the like comprises two pairs of links forming an angle with each other in substantially a common plane and pivotally connected with each other at their free ends. The links in each pair are also pivotally connected with each other on a pivot axis, and an actuating fluid power cylinder is mounted between said pair of pivot axes of the pairs of links for varying the distance therebetween. The improvement consists therein that the two pairs of links are turned in the same direction and that the fluid power cylinder is located in its entirety between said pairs of links and adapted to spread apart said pivot axes when raising.

Abstract: Method and apparatus for the repair of damaged vehicle body structure of the type in which the apparatus is secured to the vehicle body or frame and supports force-applying apparatus and measuring apparatus to permit concurrently the repair of damaged parts and the making of measurements relative to selected datum points. The apparatus comprises a pair of beam members each of which movably supports thereon a pair of clamping means for clamping to the underside of the vehicle body so as to permit these two beam members to be clamped in horizontal parallel spaced relationship to each other transversely to the vehicle's longitudinal axis. A means such as a pair of supporting wheels affixed to each of the transverse beams holds the beams and the attached vehicle in an elevated position to permit the insertion under the transverse beams of a rigid rectangular frame whose length at least equals that of the vehicle body and whose width is less than the length of each transverse beam.