Norman M. Saati "One-Wheeled" Chronometer and Components, Geneva, c. 1895, with 4 1/8 in. dia. silvered brass dial signed N. Saati & Co., Geneva, Roman numerals, Arabic numeral twelve hour dial, blued steel hands and center seconds, going barrel one wheel train with worm gear power transmission to a recessed center mounted escape wheel, split bi-metallic balance wheel with two weights and four timing screws and jeweled lever escapement all in a brass bowl with screw fit glazed bezel, max. dia. 4 3/4 in., other components include another similar silvered dial with maker's signature in script, two unfinished back plates, one with steel main plate and balance bridge, the other with only a brass balance bridge, a going barrel and arbor and a poising tool. Note: Excerpt from the June 23, 1897 issue of the Jeweler's Circular and Horological Review on the Pan-American Exposition in Providence states the "this timepiece will revolutionize the entire system of horology. By an entirely new mechanical device the inventor has constructed a watch and clock movement which he claims is strong, durable and accurate.....there is no gearing and no pinion in the movement nor under the dial and by this means all friction is avoided..."
Norman M. Saati "One-Wheeled" Chronometer and Components, Geneva, c. 1895, with 4 1/8 in. dia. silvered brass dial signed N. Saati & Co., Geneva, Roman numerals, Arabic numeral twelve hour dial, blued steel hands and center seconds, going barrel one wheel train with worm gear power transmission to a recessed center mounted escape wheel, split bi-metallic balance wheel with two weights and four timing screws and jeweled lever escapement all in a brass bowl with screw fit glazed bezel, max. dia. 4 3/4 in., other components include another similar silvered dial with maker's signature in script, two unfinished back plates, one with steel main plate and balance bridge, the other with only a brass balance bridge, a going barrel and arbor and a poising tool. Note: Excerpt from the June 23, 1897 issue of the Jeweler's Circular and Horological Review on the Pan-American Exposition in Providence states the "this timepiece will revolutionize the entire system of horology. By an entirely new mechanical device the inventor has constructed a watch and clock movement which he claims is strong, durable and accurate.....there is no gearing and no pinion in the movement nor under the dial and by this means all friction is avoided..."
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
