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Bulle Four-Glass Electromagnetic Clock
c. 1930 France
Offered by Carlton Clocks Ltd.
The case consists of ebonised wood base and top, glazed on the sides with beveled glasses, and with glazed doors to the front and back. The battery is mounted under the base, out of sight.
The 5Â¼ inch silvered dial has a skeletonised centre, with clear black tapered hands.
The pendulum consists of a coil which passes over the curved bar magnet with three poles (North at either end and South in the centre, or vice cersa). As an electrical current is briefly imparted to the coil, it is attracted towards one end of the bar. It then naturally falls back to (and over-runs) the centre, when the impulse is again imparted to attract it to the other end. This design was patented in 1920, and during the period 1920 to 1952 it is estimated that production was in the region of 300,000 clocks.
|Height||13.00 inch||(33.02 cm)|
|Width||9.00 inch||(22.86 cm)|
|Depth||7.00 inch||(17.78 cm)|
Carlton Clocks Ltd.
Chalfont Station Road