Mechanical jack for automotive vehicles

摘要

A vehicle chassis has lateral sides with a groove for a respective jack in each side. A jack in a groove in the chassis of a vehicle includes nuts which receive a horizontal, rotatable shaft which move the nuts selectively together or apart. A runner is movable to the ground or up to close the groove. Cross pieces are pivoted between the nuts and the runner so that the cross pieces selectively move the runner up or down.