"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).

Over the years many approaches have been tried - verge, deadbeat, cylinder,
duplex, and (of course) the lever are the ones that spring to mind from my
watch repairing days. I suggest you get hold of deCarl(e)s book on the
escapement- I forget the title as it must be 25 years since I read it.

Incidently, for a 'joke' you seem to be putting in a lot of effort.

The impulse to the pendulum is dependent upon two
locally invariant properties, the acceleration due to
gravity, and the mass of the Impulse Arms
(Dennison/Grimethorpe version) and pendulum.


The pendulum is not impulsed by the (weight driven
not spring driven) Going Train.

Regardless of where the energy comes from, and this is about energy, the
fundamental issues are the same:

1. Getting energy 'into' the pendulum to maintain the oscillation.

2. Minimising the interference of the escapement on the pendulum (or other
timing element) - also an energy matter.
(This could be helped by increasing the 'swing' but that then brings into
play other errors due to pendulum length variation with temperature.)

The above is true regardless of where the energy for the impulse comes from.