Skip to content
The Encyclopedia of Horology

Component record · Train

Train Bridge

Partially verified

Bridge for the wheel train

What it does

Secures the pivots of the center, third, and fourth wheels

How it works

Evolution

Sometimes split into multiple bridges

Known variations

    Identification for collectors

      Common failure modes

      • Pivot hole wear

      Diagram

      barrelcentre wheelthird wheelfourth wheelescape wheel
      Schematic: the going train. 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.