L\'ART DE L\'HORLOGERIE EN FRANCE DE ...
Geneva, Hotel Des Bergues, Nov 14, 1993
Jarossay & Compagnie à Paris, circa 1850. Very unusual and rare, fruit-wood centreseconds wall regulator with worm-screw gearing, constructed after the patents No. 215 and 216 from 16 October 1844.
C. Rectangular, moulded with glazed door. D. White enamel with Roman mimerais. Blued steel Breguet hands. M. Brass, with separate twin going barrels wound separately, but geared to drive around a fixed pinion and providing power by means of a large pulley with an endless rope transmitting the drive to the worm-screw Bear train, pin-wheel escapement, with secondsbeating wood-rod pendulum, with spring suspension. Signed on the dial and on the bridge linking the barrels. In very good condition. Dim. 134 x 32 x 17 cm.