Abstract: A rotatable cylinder, a threaded cylinder and a center threaded rod are sequentially inserted in their mutually threadingly engaged states in the inner side of a guiding inner cylinder part which is vertically disposed at the case body through an inner periphery thread and an outer periphery thread. A large bevel gear disposed at a lower end part of the rotatable cylinder is threadingly engaged with a small bevel gear which is borne by the case body, a thrust bearing having a large inside diameter is sandwiched between the large bevel gear and a bottom plate of the case body, and the center threaded rod is provided at its upper end face part with an engagement part for preventing the rotating motion of the center threaded rod when engaged with a jack attachment part of a body to be lifted up such as an automobile.

Abstract: A rotatable cylinder, a threaded cylinder and a center threaded rod are sequentially inserted in their mutually threadingly engaged states in the inner side of a guiding inner cylinder part which is vertically disposed at the case body through an inner periphery thread and an outer periphery thread. A large bevel gear disposed at a lower end part of the rotatable cylinder is threadingly engaged with a small bevel gear which is borne by the case body, a thrust bearing having a large inside diameter is sandwiched between the large bevel gear and a bottom plate of the case body, and the center threaded rod is provided at its upper end face part with an engagement part for preventing the rotating motion of the center threaded rod when engaged with a jack attachment part of a body to be lifted up such as an automobile.

Abstract: A method for refining a sugar liquor by cristobalite and an ion exchange resin, and a method for refining the sugar liquor by a novel ion exchange resin refining system, are disclosed. Cristobalite exhibits specific adsorbant properties for various colloidal or suspended substances, while the ion exchange resin exhibits superior decoloring and desalting properties with respect to colorants and salts. By combining refining by cristobalite and refining by the ion exchange resin, there is provided a sugar refining system whereby even non-washed sugar liquor may be refined. The ion exchange resin refining system of the present invention includes three series of adsorption towers.