DEVICE FOR ADJUSTING THE BEAT OF PENDULUM CLOCKSdoi:US638745 ANewell, John HUS
pende barrel haen with adjusting movement for pendulum clocks possible during the gear speedWASCHINGER ANTON
- The crutch h being friction-tight on the arbor of the anchor i, the latter may be correctly set when the pendulum is hanging vertical, by means of an engaging small crank f on an arbor c, which has an external pointer a that should oscillate to equal arcs each side of a centre ...