Perfected device for the elevation of basis of sustainability (Machine-translation by Google Translate, not legally binding)

摘要

Improved device for the lifting of support bases, essentially characterized by comprising displaceable strips applied on the lower plane of the base itself and together with its four angles, being operable two by two, these strips having at one end, a sector toothed as a rack where a bushing engages with a toothed sector in the form of a pinion, whose axially orifice bushing is traversed by a transverse axle that is aligned with groups of two adjoining corners, the driving shaft having a shaped end projection and elbow, a crank control to allow it to perform a quarter of a turn, horizontally moving the strip on an axis or vertical bolt mounted to the base of the platform, this bolt being mounted on a vertically movable leg with enough clearance for its displacement, carrying around the bolt and inside the hole of the leg that and it houses an antagonistic wharf that will support at one end on the bottom of the leg hole and on the other on a protruding flange of the bolt itself, forcing it to press on the terminal strip continuously, so that the displacement of the same, causes the vertical displacement of the leg, since the surface of the strip on which the leg rests, has a wedge shape in elevation at the end of its travel. (Machine-translation by Google Translate, not legally binding)