Skeleton Clock with chronometer escapement - HERSCHEL

[carinhall1]

Tolle,interessante mechanische Uhr.

[Ichvyenichalster]

oh wow i see, there is no pallet fork. direct balance to escapement wheel contact. cool

[Ichvyenichalster]

holy crap i have never seen a tourbillon and balance wheel that huge.

[TTompion]

@Ichvyenichalster

This is a large version of a marine chronometer escapement.

Ray

[Ichvyenichalster]

@TTompion why is that not as common in more modern terms as far as pocket watches? I can understand some lack of reliability, but it seems a lot more simple. Pardon my naivety, I'm only 15.

[TTompion]

@Ichvyenichalster

It is used in some rare pocket watches because of its timekeeping qualities.

Ray

[Ichvyenichalster]

@TTompion Wait, timekeeping qualities? Doesn't the lack of pallet fork lower the alternations per second, or accuracy?

[bakkendorff]

@Ichvyenichalster: The pallet fork is replaced by a detent. It only gives a impulse to the balance at one point in a full cycle. So it's more detached from the "pallet fork". This, combined with the cylindrical hairspring, makes the balance more isochron. Think of a frictional rest escapement, like the cylinder escapement, and compare it to the "more detached" modern swiss lever. A huge improvement in timekeeping, right? So a chronometer escapement is a bit "more detached" than the lever.

[JAYGEEonYT]

Interesting escapement I love skeleton clocks!

[ethorii]

How old and what is the value of this probably unique clock?