An oak wall regulator No.115 with electric remontoir, Karl Satori, Vienna, early 20th century

11-inch engraved silvered dial signed Ing.Karl Satori Wien XIX No.115 with outer minutes ring enclosing subsidiary seconds and hours dials, the substantial rectangular movement with inverted train, the crutchless deadbeat escapement with separately mounted pallets providing impulse to the pendulum through the spring suspension, a small remontoir spring barrel attached to the centre wheel rewound at frequent intervals by a weighted armature controlled by a mercury switch, the cannon pinion with counter weight for the minute hand, the escape wheel arbor with second wheel for tripping a lever to send an impulse to a slave dial (lacking impulse lever),  the compensated pendulum signed Patent Satori, Wien 129, finely calibrated regulation nut and oscillating against a beat plaque, the rod fitted with a tray for fine regulation weights and a contact operating a switch on the backboard, the whole mounted on a substantial cast iron backplate fixed to the backboard of the rectangular case, the front section of the case with two glazed doors and detachable from the backboard, the two sections secured by six brass thumb nuts

Karl Satori, a celebrated clockmaker and technical engineer, was born in Hungary on 22^nd June 1871 and went to Vienna to study and then to work as an electrical engineer. In 1912 he set up a precision workshop for building clocks and for many years he was clock maker to the Viennese university observatory. He died in March 1954.