mimeograph machine
Nope. That was the next generation. First came the Ditto machine with it's gelatinous plate, purple ink and wonderful fumes.
Then came the mimeograph machine.
Then came the Multilith Machine (close to type-set quality).
True copy machines were gigantic Photostat machines, the size of a small trailer, loaded with wheels, gears, nasty teeth and liquid developers. (A women I worked with in the Bank's Duplicating Department was actually "captured" by the machine - her arm was grabbed by the nasty teeth and pulled inside - many, many stitches.)
I was a "professional" mimeograph operator (that included not only running the copies, but collating and binding when necessary. You should see the effort it takes to put together 25 copies of 150 legal paper size reports! SInce I didn't have a sorting table the size of a football field, I had to collate in sections, then collate the sections into bigger sections, then sometimes again. I started my "how to win friends and influence people" personality developmemnt by noticing typos in the delivered stencils and bringing them to the attention of the originator (some were thankful, other's annoyed.)
I am eagarly awaiting BK's next book:
The Randy Vicar and the Uppity Postmistress.
der Brucer