"Brian Reay" wrote in message
...
"Airy R. Bean" wrote in message
...

Your 5 minutes web search has not revealed the theory
behind the gravity escapement, a form of remontoire,
a means to decouple the pendulum from the going train


One of the fundamental problems in time pieces is the decoupling of the
escapement from the oscillating element- not from the going train. The
issue
is ensuring that the oscillation period is not changed by the two
functions
of the escapement a) to provide the impulse b) to allow the going train to
advance at a rate controlled by the oscillator (eg the pendulum). If you
think about it, there is an analogy to Q here. In (a) I include the added
complications of ensuring an impulse largely constant despite variations
in
the state of the spring (if used).


I should have added that the later is the problem addressed by the
"remontoire" (and more crudely by a fusee). Neither address the issue of
the interference with the free oscillation of the pendulum or balance.

If your clock is weight driven, why have a "remontoire"?