Typically made of satin in black colour, its advantage is that it folds vertically through a push or a snap on the top of the hat, in order to be conveniently stored in a wardrobe or under the seat. Invertably, it opens in the same one moment fashion by an easy push from underneath.
Its French name "chapeau claque" is a composition of chapeau, which means hat, and claque, which means "tap" or "click". The "chapeau claque" is thus a hat that folds with a click, and unfolds likewise.
On May 5, 1812, a London hatter called Thomas Francis Dollman patented a design for "an elastic round hat" supported by ribs and springs. His patent was described as:
An elastic round hat, which "may be made of beaver, silk, or other materials." "The top of the crown and about half an inch from the top" as well as "the brim and about an inch, the crown from the bottom" are stiffened in the ordinary manner. The rest of the hat "is left entirely without stiffening," and is kept in shape by ribs of any suitable material "fastened horizontally to the inside of the crown," and by an elastic steel spring from three to four inches long and nearly half an inch wide "sewed on each side of the crown in the inside in an upright position." Then packed up for travelling, "the double ribbon fastened under the band is to be pulled over the top of the crown to keep it in a small compass."
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. Operating from Poissy, Paris, 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 men's hat. The characteristic snapping sound heard upon opening a gibus suggested a third name, the chapeau claque, "claque" being the French word for "slap".
- www.silktophats.eu: History of the top hat
- Quinion, Michael. Why is Q always followed by U? Penguin Books. 2009 ISBN 978-0-141-03924-4
- Patents for inventions. Abridgments of specifications. Patent Office. 1874.
- de Bono, Edward (1974). Eureka! An illustrated history of inventions from the wheel to the computer: a London Sunday times encyclopedia. London: Holt, Rinehart and Winston. p. 88.
- Sichel, Marion (1978). The Regency. London: Batsford. pp. 24–25. ISBN 9780713403428.
- Herbert, Luke (1827). The Register of Arts, and Journal of Patent Inventions, Volume 4. p. 64.
- ""Gibus" Opera Hat". McCord Museum. Retrieved 2013-07-06.
- "Hat Glossary (G)". Villagehatshop.com. Archived from the original on 2009-12-02. Retrieved 2009-10-25.
- "History of Hats". Lock Hatters. Retrieved 2013-07-06.
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