Pedrail wheel
![A pedrail wheel climbing stairs.[1]](/Images/godic/202502/01/Pedrail_wheel0015.jpg")
![The pedrail locomotive invented by Bramah Joseph Diplock of London.[1]](/Images/godic/202502/01/Bramah_Joseph_Diplock_pedrail_locomotive0015.jpg")
![1904 illustration of H.G. Wells' December 1903 The Land Ironclads, showing huge ironclad land vessels, equipped with pedrail wheels.](/Images/godic/202502/01/HG_Wells_Land_Ironclads_19040015.jpg")
![A prototype pedrail landship in 1915–16.](/Images/godic/202502/01/Pedrail0015.jpg")
The pedrail wheel is a type of wheel developed in the early 20th century for all-terrain locomotion. It was used in agricultural machinery. Pedrail wheels should not be confused with Dreadnaught Wheels which have articulated rails attached at the rim for the wheel to roll over (also known as endless railway wheels).