Height adjustment device for load support

Abstract

A leveled load is carried by a support on one of the exterior surfaces of a pair of outer wedges maintained in parallel spaced relation to each other by an intermediate activating wedge to which selective horizontal displacement is imparted relative to the outer wedges for vertical adjustment. Such selective displacement is imparted by rotation of a screw bolt threaded through a centering pin held in non-rotatable relation to the intermediate wedge in vertical alignment with the load support.

What is claimed is:  
     
       1. In combination with a gravitational load maintained in a leveled condition on a support, a device on which said support is mounted for in-situ vertical height adjustment of the load, comprising: a pair of outer wedges having exterior surfaces, one of which mounts the support; intermediate wedge means vertically separating the outer wedges for maintenance of said exterior surfaces in parallel spaced relation; and screw actuating means operatively connected to the intermediate wedge means for selective displacement thereof horizontally relative to the outer wedges to effect said vertical height adjustment by vertical displacement of said one of the exterior surfaces. 
     
     
       2. The device as defined in  claim 1 , wherein said screw actuating means comprises: a screw bolt having a screw axis; a centering pin through which the screw bolt threadedly extends within the intermediate wedge means; retention means for preventing displacement of the centering pin along said screw axis to induce axial displacement of the screw bolt along the screw axis in response to rotation of the screw bolt, and means for transferring said axial displacement of the screw bolt to the intermediate wedge means to effect said vertical height adjustment. 
     
     
       3. The device as defined in  claim 1 , wherein said intermediate wedge means comprises: a tapered body having a horizontally extending slot formation through which the screw actuating means extends to accommodate rotation thereof relative to the intermediate wedge means to effect said selective displacement.