Hi. I have never heard of this machine, but found someone else looking for info also. The link below is to a website called collector's weekly. If you scroll down to the comment section, someone said it was made by National and is the model IEB or Improved Eldredge B. The second link is to what may be the instruction manual for it. Hope this helps at least point you in the correct direction.
Shari
https://www.collectorsweekly.com/sto...arles-williams
https://ismacs.net/national/national...n-manuals.html