Jean-Joseph Chapuis (Belgian, 1765-1864) - Architect's mahogany table or table à la Tronchin, early 19th Century, with double-hinged ratcheted gilt-tooled skiver-inset rectangular top, over fitted lockable frieze drawer enclosing a central small brass button enabling height and angle adjustment, the external sides with writing or candle slides, raised on square tapered supports, 99cm x 70cm x 77cm high

For a similar table, see Christies Amsterdam, European Noble and Private Collections, 14th December 2011, lot 160, where referenced literary source Ledoux-Lebard, D., 'Le Mobilier Français du XIXe Siecle 1795-1889', Paris, 1989, pp. 118-121.
See also: Kjellberg, Pierre: 'Les Meubles Francais du 18ie Siecle, Paris 2008, p. 189

This type of architect’s table is also known as a ‘table à la Tronchin’ after Théodore Tronchin (Genf 1709- Paris 1781), an unconventional but influential 18th-century Swiss physician who advised a sluggish aristocrat “to write at a raised desk, while resting against a tall stool”.