Abstract: A vertically adjustable device for carrying a vise, an assembly platform or the like comprises a support tube which is vertically adjustably arranged within a guide tube arranged for attachment to a work bench or the like. In order to facilitate the vertical adjustment a gas spring is provided which acts between the support tube and the guide tube end exerts an upwardly directed force upon the support tube. The gas spring comprises a cylinder, a piston movable therein and a piston rod extending from the piston. The cylinder is arranged and held within the support tube so that upon removal of the support tube and the implement carried thereby by pulling the support tube out of the guide tube the gas spring is simultaneously removed leaving the work bench clear for other work.

Abstract: A vise with conventional fixed and moveable jaws, a cylindrical support secured to the lower side of the fixed jaw, a mounting for attaching the vise to a bench or the like, a tube accommodating the cylindrical support for sliding and rotational movement, and a clamping arrangement on the mounting for clamping the tube and cylindrical support in place, is also provided with a gas spring within the tube. One end of the gas spring abuts the cylindrical support at its axial center while the other end abuts the sidewall of the tube exerting an upwardly directed force at an inclined angle which counteracts and offsets the tilting moment caused by the cantilevered jaws. The tube is formed with a portion of decreased diameter engaging the cylindrical support in the clamping zone, minimizing contact and friction, and preventing sticking or canting.