Historedia
Person

Claude Chappe

Events
3
Episodes
7
Years
1790–1854

Every event in Historedia whose sources name Claude Chappe, with the role they cite and all of that event’s episodes. This is not a biography, and mentions are grouped by name, so two people with the same name can share this page.

Events and episodes

  1. Demonstration of the Mechanical Telegraph by Claude Chappe

    1790–1792

    Role: Inventor and demonstrator of the semaphore system

    1. 1790 · FranceDevising a Rapid Communication System

      At the height of the Revolution, the Chappe brothers began designing a system for swift government intelligence and orders.

    2. 2 March 1791 · Brûlon–Parcé linePublic Demonstration between Brûlon and Parcé

      Chappe's first public demonstration of the optical system took place on 2 March 1791 across a 16-kilometre line.

    3. 1792 · Paris–Lille line and national networkPractical Semaphore System Demonstrated, 1792

      In 1792 Chappe demonstrated a practical semaphore system that eventually spanned all of France.

  2. Claude Chappe's Semaphore Line Demonstration

    1792–1794

    Role: Inventor

    1. 1792 · Demonstration siteSemaphore Demonstration

      Claude Chappe demonstrated a practical semaphore system in 1792, using pivoted indicator arms to convey information visually over distance.

    2. 1794 · Paris-Lille lineFirst Messages Between Paris and Lille

      In 1794, the first messages were successfully sent between Paris and Lille using the semaphore line.

  3. French semaphore line superseded by the telegraph

    1846–1854

    Role: Inventor of the semaphore system

    1. 1846 · trial on the Rouen lineDecision to Replace Optical Telegraph

      In 1846, French authorities decided to replace the optical telegraph with the Foy–Breguet electrical telegraph after a successful trial on the Rouen line.

    2. 1854 · FranceLast Signal Sent

      The final signal from a Chappe telegraph was transmitted in 1854. No passage supports a specific 1852 supersession date or place; the legacy 1 January 1852 Paris date is unverified.

Sources

  1. Claude Chappe Wikipedia, revision of 2026-05-16
  2. Optical telegraph Wikipedia, revision of 2026-06-11
  3. Semaphore Wikipedia, revision of 2026-09-15
  4. Chappe telegraph Wikipedia, revision of 2026-09-27