Holt tracked tractor
device · 1904 · Electric age
An agricultural tractor on tracks built by the Holt company.
What it is made of
- Continuous track — has part. Holt’s tractor ran on tracks, which let it work on soft ground.
Principles and materials it uses
- Steel — is made of. The tracks and frame are steel.
History: what it evolved from and what it influenced
- Tank — inspired. The British designers of the first tanks drew on the experience of Holt’s tracked tractors.
- Bulldozer — evolved into. A bulldozer is a tracked tractor with a blade.
What it is a kind of
- Tractor — is a kind of. A tracked tractor.