This is another wonderful restoration performed by my good friend and wonderful
woodworker, Casimiro Sousa.
Before
Based on the bench mounting method of this vise, we can tell that it is
an early version. This one has a single bolt hole with a large wing nut.
Unfortunately the wing nut has been broken and only part of it remains.
Later types had the more common swivel base with 3 bolt holes to attach
to the bench.
After
What a beautiful restoration project!
This vise was cleaned using Electrolysis.
To see more on this process, do a Google search for electrolysis and
rust. There are many sites available that discuss this excellent process
of rust removal.
Anatomy and Additional Photos of the Emmert No. 4a