Josef Hoffmann, a leading figure of the Viennese art reform movement in the early twentieth century, conceived the Sitzmaschine, or “sitting machine,” for the Purkersdorf sanatorium dedicated to the well-being of wealthy patients through mineral baths and other spa services. The reclining armchair features a deep seat, and was originally equipped with cushions. Produced in economical bentwood and designed for comfort, it displays Hoffmann’s signature use of the rectangle, square and sphere.