caption: The image shows a black and white drawing of a machine with a clock on it, which is believed to be an airship from the 19th century. The machine is composed of a cylindrical shape with a handle on the side and a bell at the top. The clock is connected to the machine by a series of wires and has a pendulum at the bottom. The text accompanying the drawing provides further details about the machine, such as its purpose and how it works.