Opera hat 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. In English the hat model is usually referred to as a "collapsible top-hat", "gibus" or more often "opera hat"- The construction may originally have been inspired by an historical hat model called "chapeau bras" ("arm hat"), made as bicorne or tricorne to be carried folded under the arm 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
Top hat players to mark their position as they progress around the board. In Freemasonry, as practiced in North American lodges, top hats are often associated with the position of Worshipful Master as he is the only member allowed the privilege of wearing a head covering to signify his leadership within the lodge. However, the Master is not obliged to wear a top hat, and can wear whatever type of hat he deems appropriate for the occasion. This is because there are varying degrees of formality in different Lodges, from formal wear to everyday dress. It is also common for a Worshipful