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The Encyclopedia of Horology

Component record · Power

Rotor Bridge

Partially verified

Support plate

What it does

Secures the automatic winding mechanism

How it works

Evolution

Often decorated

Known variations

    Identification for collectors

      Common failure modes

      • Loose screws

      Diagram

      crownsliding clutchsetting wheelswinding pinion and ratchet
      Schematic: keyless winding and hand setting. An outline schematic drawn to show the arrangement of the parts discussed here. It is not a dimensioned working drawing and does not depict a particular maker's calibre.

      Sources & references

      1. de Carle, D., Practical Watch Repairing
      2. de Carle, D., Watch and Clock Encyclopedia
      3. Daniels, G., Watchmaking

      Where sources disagree, the disagreement is stated rather than resolved silently.