Important Collectors Watches, Pocket ...
Geneva, Mar 29, 2009
LOT 206
Demonstration Escapements Omega. Made by Ruegg, La Chaux-de- Fonds, circa 2000. Fine, electric working escapement model ?Swiss Lever Escapement? and Co-Axial Escapement.
CHF 3,000 - 5,000
USD 2,600 - 4,300 / EUR 2,000 - 3,400
Sold: CHF 3,960
C. Rectangular, inclined red-painted wood with Perspex cover, brushed slate-colored plate secured by four screws and inscribed ?Co-Axial Escapement? and ?Swiss Lever Escapement?. M. The models electrically driven, steel and brass, red painted ?jewels?. Signed. Dim. 16 x 30 x 25 cm. In working condition
Notes
Co-axial escapement
A modern watch escapement invented by English watchmaker George Daniels. Often considered to be one of the most significant horological advancements since the lever escapement, the co-axial escapement requires virtually no lubrication, thus eliminating one of the shortcomings of the traditional lever escapement. The critical virtue of the Daniels escapement was the virtual elimination of the sliding friction component, i.e. the sliding of the pallet stones over the teeth of the escape wheel. What little sliding friction remains is due to the impossibility of maintaining an exact tangential geometry throughout the duration of an impulse. By utilizing radial friction instead of sliding friction at the impulse surfaces, the co-axial escapement significantly reduces friction.
A modern watch escapement invented by English watchmaker George Daniels. Often considered to be one of the most significant horological advancements since the lever escapement, the co-axial escapement requires virtually no lubrication, thus eliminating one of the shortcomings of the traditional lever escapement. The critical virtue of the Daniels escapement was the virtual elimination of the sliding friction component, i.e. the sliding of the pallet stones over the teeth of the escape wheel. What little sliding friction remains is due to the impossibility of maintaining an exact tangential geometry throughout the duration of an impulse. By utilizing radial friction instead of sliding friction at the impulse surfaces, the co-axial escapement significantly reduces friction.