Here is a Photo of the name plate on my Friends engine.
I think we had figured out that is a educational supply house that sold mechanisms to schools?
(Attachment Link)
Jim in Minnesota
Thank you - I am agree - for physics lessons in high school
it was never a toy. So it's probably not that old - more in the range of
1950. I think I'll have a manufacturer's plate engraved on me.
Thank you for your kind help, Arnold