Patent ID: 6059265
Filing Date: 2000-05-09
Classification: B66C

Abstract:
A device for lifting and precision positioning of a test piece comprising:a vertical lifting means for exerting a vertical lifting force;a rigid lifting connector having a longitudinal slot formed therethrough, a centerline running the length of said connector, a topmost end away from said test piece and a bottom end for attaching to said test piece and having position adjusting means for adjusting the position of said lifting rod in said longitudinal slot, said position adjusting means further comprising:a bushing shaft having bushing shoulders displaced around the ends of said bushing shaft, said bushing shaft positioned in said longitudinal slot such that said lifting rod passes through said bushing shaft;an adjustment screw having a top end away from said rigid lifting connector and a bottom end within said rigid lifting connector, said adjustment screw being threaded within said rigid lifting connector and displaced along the centerline of said rigid lifting connector said bottom end contacting said bushing shaft upon lifting said lifting rod;a locking nut attached to said adjustment screw and locked against the topmost end of said rigid lifting connector;a bolt head rigidly attached to the topmost end of said adjustment screw; anda lifting rod displaced through said longitudinal slot and orthogonal to the centerline of said connector, said lifting rod being attached to said vertical lifting means.