🛠️ Invention or technique

Steam locomotive

Locomotora de vapor

Date
1804 · confidence high
Place
Merthyr Tydfil (Penydarren), Wales, United Kingdom
Credited to
Richard Trevithick
People
👤 Richard Trevithick1771–1833
Field
Movement

⚠️ Disputed: the sources disagree.

What it is

The first steam engine on rails to haul a load (10 tons of iron and 70 men) at the Penydarren ironworks. It demonstrated that wheel-to-rail adhesion was sufficient for traction.

Trevithick gave the first demonstration (1804); Blenkinsop (1812) and Hedley ('Puffing Billy', 1813) built the first locomotives in regular use, and George Stephenson ('Blücher', 1814) made them reliable. It is often wrongly attributed to Stephenson.

What it led to

  • The railway as a system of mass land transport
  • Lower costs for transporting coal and goods
  • A new locomotive-building industry (Stephenson, Newcastle)
  • The expansion of national markets
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Sources✓ verified 2026-09-25