Safety Lift A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks. A safety lift mechanism was redesigned to incorporate screw jacks.