Frey (Belleville)

Frey fils of Belleville, France
Double vertical drilling machine for the Chemin de Fer du Nord [1]. See illustration. The machine had an unusual type of powered/manual feed, visible in the bottom LH corner of the drawing. A similar arrangement was favoured by J. Whitworth and Co at one time.
See Also
Sources of Information
- ↑ Imperial Journal of Art, Science, Mechanics, and Engineering, Vol III, c.1853, pp.111-2