J. L. REUTTER PATENT ATMOS
TWO COLOR MARBLE
Atmos, "Pendule Perpetuelle", J.L. Reutter patent, No.
4144, Swiss. Made in the late 1920s.
Very fine and very rare, early, Art Deco, black and gray
marble "perpetual" clock wound by changes in barometric
pressure with early mercury in glass expansion device.
Rectangular, black marble case with gray veined
marble for the front and base, chrome-rimmed aperture
to view the revolving pendulum, chrome bezel.
Matte silvered with painted black baton indexes,
inner minute track. Black painted epee hands.
Chrome, vacuum chamber with rotating drum
driven by a mercury in glass expansion device winding
the going barrel by a blued steel spring and ratchet, lever
escapement driven by annular torsion pendulum, locking
lever in the base below the pendulum.