There was an explosion of mechanical desk designs in the second part of the 18th century. This came at the same time as a renewed interest in smaller domestic furniture in the homes of the rich, and the general introduction in their homes of all kinds of new mechanical devices such as small clocks and wood turning tools. These devices are described in the Encyclopédie of 1772. The devices and the interest in them were a result of the technological ferment which arose in the United Kingdom during its Industrial revolution, and gradually spread to Europe.
The mechanical desk fad gradually passed away at the beginning of the 19th century. By the middle of the 19th century desk mecanisms were mostly simple affairs meant to extract or retract sliders or supports from a secretary desk, to give but one example.
The windows that can pop up all over a virtual desk in a graphical user interface or GUI are in a sense direct descendants of the more complicated of the 18th century mechanical desks. On the whole however, these virtual windows seem to be more efficient in getting useful work done.
See also the List of desk forms and types.