Origin of escape wheel
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But the pressure of the escape-wheel against the detent, and the consequent friction, prevent the pendulum from acting freely.Great Facts|Frederick C. Bakewell
This arc of one and one-half degrees of escape-wheel movement is a complete loss of six and one-fourth per cent.
The escape-wheel arbor and pallet staff can be made in the same way.
It is to be borne in mind that at the point f is located the extreme point of an escape-wheel tooth.
This last arc defines the addendum of the escape-wheel teeth.