Bulle clocks are the ingenious invention of Maurice Moulin and Phillipe Favre-Bulle. The pendulum bob is an electrical solenoid swinging coaxially along a unique permanent bar magnet having like poles at the center and ends. A tiny mechanism using two fingerlike pawl activated by the motion of the pendulum, advance a flat ratchet wheel. A train of gears linked to the ratchet wheel advance the hands.

The Bulle clocks first appeared just after WWI and as late as 1952. They are found in over 100 different styles of clock cases, and a few movements were cased in the United States.

A single 1.5 volt dray cell will operate the Bulle clock for more than a year owing to the unique electromagnetic dynamics of the invention.

Height: 21 inches
Diameter: 8 inches
(at base)