Pedrail wheel
Videos
The pedrail wheel is a type of all-terrain wheel developed in the late 19th and early 20th century by Londoner Bramah Joseph Diplock. It consists of a series of "feet" connected to pivots on a wheel.
An advanced design pedrail wheel climbing stairs.
1904 illustration of H. G. Wells' December 1903 The Land Ironclads, showing huge ironclad land vessels, equipped with pedrail wheels.