Top hat ribs and springs. His patent was described as: Some sources have taken this to describe an early folding top hat, although it is not explicitly stated whether Dollman's design was specifically for male or female headgear. Dollman's patent expired in 1825. In France, around 1840, Antoine Gibus's design for a spring-loaded collapsible top-hat proved so popular that hats made to it became known as "gibus". They were also often called "opera hats" due to the common practice of storing them in their flattened state under one's seat at the opera, though the term can also refer to any tall formal
Femme au Chapeau (lower right). The work—executed in a style consistent with other works by Metzinger created between 1905 and 1907, such as "Two Nudes in an Exotic Landscape"—is a portrait of an elegant women gazing self-assuredly directly at the spectator, wearing a fashionable wide-brimmed hat with a large green-bleu bow tied in a simple knot. Metzinger's use of color in "Femme au Chapeau" is very closely related to the works of artist directly in his entourage known as the Fauves; quasi-pure greens, blues and violets, juxtaposed in groups far from randomly. However, the composition contains a variety of geometrized shapes, including the