Dunbar and Woodford

James Dunbar patented a mechanical shovel, the patents were later purchased by the Ruston company which formed the basis of their Steam Navvy.
1885 At the Lincoln Meeting of the Institution of Mechanical Engineers, Joseph Ruston contributed a paper on Dunbar and Ruston's steam navvy [1].
See Also
Sources of Information
- ↑ I Mech E Proceedings 1885, page 349