It is a cylindrical valve with either a ball or flapper closing mechanism. The boyish look and the short skirts of the 1920s flapper seemed to disappear overnight. Minnie was designed in the fashion of a flapper girl. This culminated in the 1920s flapper look, which has informed modern fashion ever since. The beam pivots about an input axis, which moves a flapper closer to the nozzle. She combined the voice of an ingenue with the spirit of a flapper. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank drains and the flapper falls due to gravity. By 1911, a newspaper review indicates the mischievous and flirtatious "flapper" was an established stage-type. Bobbing her hair, she assumes the modern look of a "flapper" ("Thoroughly Modern Millie"). The Gibson Girl was one of the origins of the flapper. Flip-Top caps like Flapper closures provide controlled dispensing of dry products. During 1924, Bow's "horrid" flapper raced against Moore's "whimsical". Arthur was remodeled as such a personality, a flapper. There were examples of new youth subcultures emerging throughout that period, such as the flapper.