Lathes with a Simplex badge were either a native American product from a machine tool company established in the late 1800s (who later absorbed the Kern Machine Tool Company of East Hamilton) or Mondial Lathes from Belgium whose range of the 1950s included machines with a Simplex logo their headstock or stand.
The only available pictures of the original American lathes are shown below, but it known that several examples have survived until recent times and if photographs of these (or catalog illustrations) can be supplied by readers, they will be added to this section. Please contact the author if you are able to help.