Abstract: The present invention provides a container stopper in which a structure is simplified to reduce a cost, a troublesome operation is unnecessary, and liquid can be poured in and out by an easy operation which does not require time and effort. The present invention is a container stopper comprises a pour-out passage through which liquid in a container is poured outside in a stopper main body, an operating valve for opening and closing the pour-out passage, a stopper cover with which an upper portion of the stopper main body is covered, and a valve body operating portion for sliding the operating valve up and down as a lever outside the stopper cover is operated, wherein a pour-in passage through which the liquid is poured into the container from outside and which does not cross the pour-out passage is provided in the stopper main body and a pour-in valve for normally closing the pour-in passage and for opening the pour-in passage only in pouring-in of the liquid is provided.

Abstract: The lever operating mechanism for air-pressure utilizing hot pots referred to in the present invention that have a simple construction of lever operating mechanism, is able to raise and collapse the lever and maintain the lever raised and collapsed condition extremely easily and smoothly, and achieves superb operability and satisfactory discharge because all the operations can be carried out simply by moving the free end of the operating lever up and down with only one finger.