perfected for lifting its base-temptation device

摘要

perfected for lifting support bases device essentially characterized by comprising a movable strips applied on the lower plane of the support base itself and by its four corners, being operable in pairs, presenting these strips at one end, a sector toothing as a rack which engages a cap with a toothed sector shaped gear, the axially with orifices cap is traversed by a transverse axis in alignment driven groups on two adjacent corners, for which purpose the drive shaft by a shaped end outgoing and layering, a control crank to allow make a quarter turn, horizontally displacing the strip about an axis or vertical pin mounted to the base platform, leaving it bolt mounted to a movable leg vertically with sufficient clearance for movement, carrying circling the pin and into the hole in the leg qu and houses it antagonistic unmuelle that support at one end on the bottom of the hole of the leg and the other on a protrusion reblado bolt itself, forcing the latter to press on the strip in a continuous, so that the displacement thereof , causes the vertical displacement of the leg, since the surface of the strip on the supporting leg, has a wedge shape in elevation at the end of its travel.