The remontoire of the Dennison/Grimethorpe gravity
escapement deals with this.

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