Close up of part of belt and pulley system powered by antique steam tractor at steam show in Ohio, U.S.A. Steam tractors use belts to transfer power for threshing, milling, and pumping. Much of the work done by 19th century steam tractors was beltwork in addition to plowing and pulling. Steam tractors are powered by burning a combustible material to produce steam in a boiler that drives the wheels and pulleys. | |
Licence : | Droits gérés |
Crédit : | Science Photo Library / Matulavich, Peter |
Model Release : | Non requis |
Property release : | Non requis |
Durée : | 10 Secondes |
Aspect ratio : | 16/9 |
Restrictions : | - |