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Coaxial escapement - Wikipedia omega deville co-axial escapement

Coaxial escapement From Wikipedia, the free encyclopedia   (Redirected from Co-axial escapement ) Jump to: navigation , search

Coaxial escapement is a type of modern watch escapement mechanism invented by English watchmaker George Daniels .

Daniels' Co-axial Escapement

Contents 1 Overview 2 Critical virtue 3 Radial friction vs. sliding friction 4 Commercialization 5 References 6 External links

Overview [ edit ]

Invented around 1974 [1] and patented in 1980 [2] by English watchmaker George Daniels , the Co-axial escapement is a modification of the lever escapement with some features of the detent escapement . Considered by some [ who? ] to be one of the most significant horological advancements since the invention of the lever escapement, the co-axial escapement functions with a system of 3 pallets that separates the locking functi omega-deville-co-axial-escapement-rid-0.html. omega aqua terra co axialon from the impulse, avoiding the sliding friction of the lever escapement. This makes lubrication of the pallets unnecessary [3] [4] and thereby eliminates one of the shortcomings of the traditional lever escapement.

Critical virtue [ edit ]

The critical virtue of the Daniels Escapement is 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. [5]

Radial friction vs. sliding friction [ edit ]

By utilizing radial friction instead of sliding friction at the impulse surfaces the co-axial escapement significantly reduces friction, theoretically resulting in longer service intervals and greater accuracy over time.

Commercialization [ edit ]

The escapement was commercialized in 1999 by Omega SA when it introduced the first mass-produced watch incorporating the technology. When it first came to the market as the Caliber 2500, it had an oscillation rate of 28,800 bph (8 bt/s), considered a "hi-beat" movement. But the rate was reduced to 25,200 bph (7 bt/s) in the Caliber 2500C. "While Daniels has recognized the advantages of higher beat movements, he has also noted that they aggravate the problem of sliding friction in the escapement (at the escape teeth and pallets). Higher beat movements produce increased speed and pressure at these critical surfaces." [6]

References [ edit ] ^ Daniels, George. "About George Daniels" . Daniels London . Retrieved 2008-06-12 .   ^ Thompson, Curtis (2001). "Where George Daniels shopped the Co-Axial..." . Chuck Maddox home page . Retrieved 2008-06-12 .   External link in |publisher= ( help ) 17 June 2001 Addendum ^ Nicolet, J.C. (1999). "Could you explain the mechanism of the coaxial watch?" . Questions in Time . Europa star online . Retrieved 2008-06-12 .   ^ Odets, Walt (1999). "The Omega Coaxial: An impressive achievement" . The Horologium . Archived from the original on 2012-12-26 . Retrieved 2008-06-12 . Archived article pages 2 , 3 , and 4 .   ^ Woodward, P., Performance of the Daniels Coaxial Escapement, Horological Journal, August 2004, pages 283-285, at page 283 ^ Zbinden, H., Zbinden, H., Of Larger Balances, High Beat and Important Oils, TZ Classics No. 1591,Timezone, Dec. 26, 2000, quoting Odets, W. External links [ edit ] Description and animation of Omega's co-axial escapement The Omega Co-axial:An Impressive Achievement by Walt Odets Performance of the Daniels Coaxial Escapement by Phillip Woodward Questions in Time column about the history leading to the co-axial escapement by Professor J.C. Nicolet Clear images, and an animation, of the co-axial escapement by Siméon Lapinbleu line drawing animation of the daniels co-axial escapement Mark Headrick's Horology Page Retrieved from " https://en./w/index.php?title=Coaxial_escapement&oldid=738426500 " Categories : Escapements Hidden categories: CS1 errors: external links All articles with specifically marked weasel-worded phrases Articles with specifically marked weasel-worded phrases from November 2015
omega deville co-axial escapement

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Omega DeVille Co-axial escapement limited edition RED GOLD 35/999 over 3 years ago Details Price $999.00 Brand Omega Seller nneemmoo Available on WatchUSeek Location Washington Description

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