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Tazmo61

The Genequand Escapement

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A short film showing the Genequand escapement in action , and how it actually works .(subtitled)

 

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Thanks Bernie :thumbsup:

Pretty confident we will see more brands embracing this 'Constant Force' (remontoir d'egalite') technology, along with greater use of silicon being used within a movements.

Hooke's Law...

https://en.wikipedia.org/wiki/Hooke's_law

 

Watchmakers for centuries have been working to eliminate torque variations in the power delivery of clock & watch mechanisms.  British horologist Charles Haley (1762-1823) was a pioneer in solving the problem of reducing power in mechanisms.  His patent for a constant force escapement was granted in 1796.

Breguet registered a similar patent in 1796. :whistle:

 

2008 Girard-Perregaux introduced their Constant Escapement...

 

Later came the Zenith Defy Lab...

 

 

George Daniels & Roger Pratt both produced some stunning timepieces with a Double Wheel Remontoir.

It's quite remarkable (too me) that, clearly, inspiration for these later developments have been taken from John Harrison's 'Grasshopper Escapement' (1722).

:thumbsup:

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Thank you , Alan , for your input , very interesting .

The main reason for posting the film was to show , that the constant force type of escapement has now achieved a greater power reserve (1month) . I should have mentioned this in my post . I am already familiar with the GP constant escapement and the Zenith Defy lab , both very interesting .

My understanding of the Remontoir , is that it is an additional spring (which I believe was invented by Harrison during his development on his marine chronometers) that delivers precise bursts of power further down the gear train (normally the fourth wheel)

I know Breguet experimented with the Remontoir , but didn't know he had a patent . I also believe Thomas Mudge used it as well . There is of course two types of Remontoir , gravity(weight) and spring . 

The constant force escapement works on a similar principle . The main difference being that they use a buckled blade attached directly to the escapement .

Same aims but slightly different . 

Thank you , Alan , for the additional information .

Edited by Tazmo61
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Thanks for posting the link Bernie...right up my street! :thumbsup:

 

P.s.

Correction to my original post...Breguet’s patent was lodged in 1798! :whistle:

:thumbsup:

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5 minutes ago, Karrusel said:

Correction to my original post...Breguet’s patent was lodged in 1798! :whistle:

Thank you , Alan . You are a constant source of information , fantastic :thumbsup:

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